Standardize linting file and fix or ignore lots of linting errors

.golangci.yml

@@ -1,74 +0,0 @@
-linters-settings:
-  govet:
-    check-shadowing: true
-    settings:
-      printf:
-        funcs:
-          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Infof
-          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Errorf
-          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Warnf
-          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Fatalf
-  revive:
-    min-confidence: 0
-  gocyclo:
-    min-complexity: 10
-  maligned:
-    suggest-new: true
-  dupl:
-    threshold: 100
-  goconst:
-    min-len: 2
-    min-occurrences: 2
-  depguard:
-    list-type: blacklist
-    packages:
-      # logging is allowed only by logutils.Log, logrus
-      # is allowed to use only in logutils package
-      - github.com/sirupsen/logrus
-  misspell:
-    locale: US
-  lll:
-    line-length: 140
-  goimports:
-    local-prefixes: github.com/golangci/golangci-lint
-  gocritic:
-    enabled-tags:
-      - performance
-      - style
-      - experimental
-      - diagnostic
-    disabled-checks:
-      - commentFormatting
-      - commentedOutCode
-      - evalOrder
-      - hugeParam
-      - octalLiteral
-      - rangeValCopy
-      - tooManyResultsChecker
-      - unnamedResult
-
-linters:
-  disable-all: true
-  enable:
-    - gocritic
-    - gofmt
-    - gosimple
-    - govet
-    - ineffassign
-    - misspell
-    - revive
-    - staticcheck
-    - unused
-
-run:
-  skip-dirs:
-    - pkg
-
-issues:
-  exclude:
-    - can't lint
-    - declaration of "err" shadows declaration at line
-    - should have a package comment, unless it's in another file for this package
-    - error strings should not be capitalized or end with punctuation or a newline
-    - Wrapf call needs 1 arg but has 2 args
-    - cs.NegotiatedProtocolIsMutual is deprecated

Makefile

@@ -29,7 +29,7 @@ ci: testcgo build
 
 bootstra%:
 	# Using a released version of golangci-lint to take into account custom replacements in their go.mod
-	$Q curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(shell go env GOPATH)/bin v1.42.0
+	$Q curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(shell go env GOPATH)/bin v1.48.0
 
 .PHONY: bootstra%
 
@@ -151,7 +151,7 @@ integration: bin/$(BINNAME)
 #########################################
 
 fmt:
-	$Q gofmt -l -s -w $(SRC)
+	$Q goimports -local github.com/golangci/golangci-lint -l -w $(SRC)
 
 lint:
 	$Q golangci-lint run --timeout=30m

acme/account.go

@@ -33,7 +33,7 @@ func (a *Account) ToLog() (interface{}, error) {
 
 // IsValid returns true if the Account is valid.
 func (a *Account) IsValid() bool {
-	return Status(a.Status) == StatusValid
+	return a.Status == StatusValid
 }
 
 // KeyToID converts a JWK to a thumbprint.

acme/account_test.go

@@ -46,14 +46,14 @@ func TestKeyToID(t *testing.T) {
 			tc := run(t)
 			if id, err := KeyToID(tc.jwk); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}
@@ -131,12 +131,13 @@ func TestExternalAccountKey_BindTo(t *testing.T) {
 			}
 			if wantErr {
 				assert.NotNil(t, err)
-				assert.Type(t, &Error{}, err)
+				var ae *Error
-				ae, _ := err.(*Error)
+				if assert.True(t, errors.As(err, &ae)) {
 					assert.Equals(t, ae.Type, tt.err.Type)
 					assert.Equals(t, ae.Detail, tt.err.Detail)
 					assert.Equals(t, ae.Identifier, tt.err.Identifier)
 					assert.Equals(t, ae.Subproblems, tt.err.Subproblems)
+				}
 			} else {
 				assert.Equals(t, eak.AccountID, acct.ID)
 				assert.Equals(t, eak.HmacKey, []byte{})

acme/api/account.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"encoding/json"
+	"errors"
 	"net/http"
 
 	"github.com/go-chi/chi"
@@ -97,8 +98,8 @@ func NewAccount(w http.ResponseWriter, r *http.Request) {
 	httpStatus := http.StatusCreated
 	acc, err := accountFromContext(ctx)
 	if err != nil {
-		acmeErr, ok := err.(*acme.Error)
+		var acmeErr *acme.Error
-		if !ok || acmeErr.Status != http.StatusBadRequest {
+		if !errors.As(err, &acmeErr) || acmeErr.Status != http.StatusBadRequest {
 			// Something went wrong ...
 			render.Error(w, err)
 			return

acme/api/account_test.go

@@ -197,12 +197,13 @@ func TestNewAccountRequest_Validate(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			if err := tc.nar.Validate(); err != nil {
 				if assert.NotNil(t, err) {
-					ae, ok := err.(*acme.Error)
+					var ae *acme.Error
-					assert.True(t, ok)
+					if assert.True(t, errors.As(err, &ae)) {
 						assert.HasPrefix(t, ae.Error(), tc.err.Error())
 						assert.Equals(t, ae.StatusCode(), tc.err.StatusCode())
 						assert.Equals(t, ae.Type, tc.err.Type)
 					}
+				}
 			} else {
 				assert.Nil(t, tc.err)
 			}
@@ -268,12 +269,13 @@ func TestUpdateAccountRequest_Validate(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			if err := tc.uar.Validate(); err != nil {
 				if assert.NotNil(t, err) {
-					ae, ok := err.(*acme.Error)
+					var ae *acme.Error
-					assert.True(t, ok)
+					if assert.True(t, errors.As(err, &ae)) {
 						assert.HasPrefix(t, ae.Error(), tc.err.Error())
 						assert.Equals(t, ae.StatusCode(), tc.err.StatusCode())
 						assert.Equals(t, ae.Type, tc.err.Type)
 					}
+				}
 			} else {
 				assert.Nil(t, tc.err)
 			}

acme/api/eab.go

@@ -3,6 +3,7 @@ package api
 import (
 	"context"
 	"encoding/json"
+	"errors"
 
 	"go.step.sm/crypto/jose"
 
@@ -24,6 +25,7 @@ func validateExternalAccountBinding(ctx context.Context, nar *NewAccountRequest)
 	}
 
 	if !acmeProv.RequireEAB {
+		//nolint:nilnil // legacy
 		return nil, nil
 	}
 
@@ -51,7 +53,8 @@ func validateExternalAccountBinding(ctx context.Context, nar *NewAccountRequest)
 	db := acme.MustDatabaseFromContext(ctx)
 	externalAccountKey, err := db.GetExternalAccountKey(ctx, acmeProv.ID, keyID)
 	if err != nil {
-		if _, ok := err.(*acme.Error); ok {
+		var ae *acme.Error
+		if errors.As(err, &ae) {
 			return nil, acme.WrapError(acme.ErrorUnauthorizedType, err, "the field 'kid' references an unknown key")
 		}
 		return nil, acme.WrapErrorISE(err, "error retrieving external account key")

acme/api/eab_test.go

@@ -860,13 +860,15 @@ func TestHandler_validateExternalAccountBinding(t *testing.T) {
 			if wantErr {
 				assert.NotNil(t, err)
 				assert.Type(t, &acme.Error{}, err)
-				ae, _ := err.(*acme.Error)
+				var ae *acme.Error
+				if assert.True(t, errors.As(err, &ae)) {
 					assert.Equals(t, ae.Type, tc.err.Type)
 					assert.Equals(t, ae.Status, tc.err.Status)
 					assert.HasPrefix(t, ae.Err.Error(), tc.err.Err.Error())
 					assert.Equals(t, ae.Detail, tc.err.Detail)
 					assert.Equals(t, ae.Identifier, tc.err.Identifier)
 					assert.Equals(t, ae.Subproblems, tc.err.Subproblems)
+				}
 			} else {
 				if got == nil {
 					assert.Nil(t, tc.eak)

acme/api/middleware_test.go

@@ -518,9 +518,6 @@ func TestHandler_verifyAndExtractJWSPayload(t *testing.T) {
 			}
 		},
 		"ok/empty-algorithm-in-jwk": func(t *testing.T) test {
-			_pub := *pub
-			clone := &_pub
-			clone.Algorithm = ""
 			ctx := context.WithValue(context.Background(), jwsContextKey, parsedJWS)
 			ctx = context.WithValue(ctx, jwkContextKey, pub)
 			return test{

acme/api/order_test.go

@@ -179,12 +179,13 @@ func TestNewOrderRequest_Validate(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			if err := tc.nor.Validate(); err != nil {
 				if assert.NotNil(t, err) {
-					ae, ok := err.(*acme.Error)
+					var ae *acme.Error
-					assert.True(t, ok)
+					if assert.True(t, errors.As(err, &ae)) {
 						assert.HasPrefix(t, ae.Error(), tc.err.Error())
 						assert.Equals(t, ae.StatusCode(), tc.err.StatusCode())
 						assert.Equals(t, ae.Type, tc.err.Type)
 					}
+				}
 			} else {
 				if assert.Nil(t, tc.err) {
 					if tc.nbf.IsZero() {
@@ -253,12 +254,13 @@ func TestFinalizeRequestValidate(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			if err := tc.fr.Validate(); err != nil {
 				if assert.NotNil(t, err) {
-					ae, ok := err.(*acme.Error)
+					var ae *acme.Error
-					assert.True(t, ok)
+					if assert.True(t, errors.As(err, &ae)) {
 						assert.HasPrefix(t, ae.Error(), tc.err.Error())
 						assert.Equals(t, ae.StatusCode(), tc.err.StatusCode())
 						assert.Equals(t, ae.Type, tc.err.Type)
 					}
+				}
 			} else {
 				if assert.Nil(t, tc.err) {
 					assert.Equals(t, tc.fr.csr.Raw, csr.Raw)
@@ -761,14 +763,14 @@ func TestHandler_newAuthorization(t *testing.T) {
 			ctx = acme.NewProvisionerContext(ctx, tc.prov)
 			if err := newAuthorization(ctx, tc.az); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *acme.Error
-					case *acme.Error:
+					if assert.True(t, errors.As(err, &k)) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}

acme/authorization_test.go

@@ -130,14 +130,14 @@ func TestAuthorization_UpdateStatus(t *testing.T) {
 			tc := run(t)
 			if err := tc.az.UpdateStatus(context.Background(), tc.db); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}

acme/challenge_test.go

@@ -188,14 +188,14 @@ func Test_storeError(t *testing.T) {
 			tc := run(t)
 			if err := storeError(context.Background(), tc.db, tc.ch, tc.markInvalid, err); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}
@@ -243,14 +243,14 @@ func TestKeyAuthorization(t *testing.T) {
 			tc := run(t)
 			if ka, err := KeyAuthorization(tc.token, tc.jwk); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}
@@ -533,14 +533,14 @@ func TestChallenge_Validate(t *testing.T) {
 			ctx := NewClientContext(context.Background(), tc.vc)
 			if err := tc.ch.Validate(ctx, tc.db, tc.jwk, nil); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}
@@ -928,14 +928,14 @@ func TestHTTP01Validate(t *testing.T) {
 			ctx := NewClientContext(context.Background(), tc.vc)
 			if err := http01Validate(ctx, tc.ch, tc.db, tc.jwk); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}
@@ -1228,14 +1228,14 @@ func TestDNS01Validate(t *testing.T) {
 			ctx := NewClientContext(context.Background(), tc.vc)
 			if err := dns01Validate(ctx, tc.ch, tc.db, tc.jwk); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}
@@ -2298,14 +2298,14 @@ func TestTLSALPN01Validate(t *testing.T) {
 			ctx := NewClientContext(context.Background(), tc.vc)
 			if err := tlsalpn01Validate(ctx, tc.ch, tc.db, tc.jwk); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}

acme/db/nosql/account_test.go

@@ -95,16 +95,16 @@ func TestDB_getDBAccount(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if dbacc, err := d.getDBAccount(context.Background(), accID); err != nil {
-				switch k := err.(type) {
+				var acmeErr *acme.Error
-				case *acme.Error:
+				if errors.As(err, &acmeErr) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, acmeErr.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, acmeErr.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, acmeErr.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -174,16 +174,16 @@ func TestDB_getAccountIDByKeyID(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if retAccID, err := d.getAccountIDByKeyID(context.Background(), kid); err != nil {
-				switch k := err.(type) {
+				var acmeErr *acme.Error
-				case *acme.Error:
+				if errors.As(err, &acmeErr) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, acmeErr.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, acmeErr.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, acmeErr.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -248,16 +248,16 @@ func TestDB_GetAccount(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if acc, err := d.GetAccount(context.Background(), accID); err != nil {
-				switch k := err.(type) {
+				var acmeErr *acme.Error
-				case *acme.Error:
+				if errors.As(err, &acmeErr) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, acmeErr.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, acmeErr.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, acmeErr.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -354,16 +354,16 @@ func TestDB_GetAccountByKeyID(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if acc, err := d.GetAccountByKeyID(context.Background(), kid); err != nil {
-				switch k := err.(type) {
+				var acmeErr *acme.Error
-				case *acme.Error:
+				if errors.As(err, &acmeErr) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, acmeErr.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, acmeErr.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, acmeErr.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}

acme/db/nosql/authz_test.go

@@ -101,16 +101,16 @@ func TestDB_getDBAuthz(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if dbaz, err := d.getDBAuthz(context.Background(), azID); err != nil {
-				switch k := err.(type) {
+				var acmeErr *acme.Error
-				case *acme.Error:
+				if errors.As(err, &acmeErr) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, acmeErr.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, acmeErr.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, acmeErr.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -295,16 +295,16 @@ func TestDB_GetAuthorization(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if az, err := d.GetAuthorization(context.Background(), azID); err != nil {
-				switch k := err.(type) {
+				var acmeErr *acme.Error
-				case *acme.Error:
+				if errors.As(err, &acmeErr) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, acmeErr.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, acmeErr.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, acmeErr.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -745,16 +745,16 @@ func TestDB_GetAuthorizationsByAccountID(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if azs, err := d.GetAuthorizationsByAccountID(context.Background(), accountID); err != nil {
-				switch k := err.(type) {
+				var acmeErr *acme.Error
-				case *acme.Error:
+				if errors.As(err, &acmeErr) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, acmeErr.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, acmeErr.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, acmeErr.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}

acme/db/nosql/certificate.go

@@ -138,5 +138,4 @@ func parseBundle(b []byte) ([]*x509.Certificate, error) {
 		return nil, errors.New("error decoding PEM: unexpected data")
 	}
 	return bundle, nil
-
 }

acme/db/nosql/certificate_test.go

@@ -250,16 +250,16 @@ func TestDB_GetCertificate(t *testing.T) {
 			d := DB{db: tc.db}
 			cert, err := d.GetCertificate(context.Background(), certID)
 			if err != nil {
-				switch k := err.(type) {
+				var acmeErr *acme.Error
-				case *acme.Error:
+				if errors.As(err, &acmeErr) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, acmeErr.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, acmeErr.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, acmeErr.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, acmeErr.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -444,16 +444,16 @@ func TestDB_GetCertificateBySerial(t *testing.T) {
 			d := DB{db: tc.db}
 			cert, err := d.GetCertificateBySerial(context.Background(), serial)
 			if err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}

acme/db/nosql/challenge_test.go

@@ -94,16 +94,16 @@ func TestDB_getDBChallenge(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if ch, err := d.getDBChallenge(context.Background(), chID); err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -286,16 +286,16 @@ func TestDB_GetChallenge(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if ch, err := d.GetChallenge(context.Background(), chID, azID); err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}

acme/db/nosql/eab.go

@@ -54,7 +54,6 @@ func (db *DB) getDBExternalAccountKey(ctx context.Context, id string) (*dbExtern
 
 // CreateExternalAccountKey creates a new External Account Binding key with a name
 func (db *DB) CreateExternalAccountKey(ctx context.Context, provisionerID, reference string) (*acme.ExternalAccountKey, error) {
-
 	externalAccountKeyMutex.Lock()
 	defer externalAccountKeyMutex.Unlock()
 
@@ -210,6 +209,7 @@ func (db *DB) GetExternalAccountKeyByReference(ctx context.Context, provisionerI
 	defer externalAccountKeyMutex.RUnlock()
 
 	if reference == "" {
+		//nolint:nilnil // legacy
 		return nil, nil
 	}
 
@@ -228,6 +228,7 @@ func (db *DB) GetExternalAccountKeyByReference(ctx context.Context, provisionerI
 }
 
 func (db *DB) GetExternalAccountKeyByAccountID(ctx context.Context, provisionerID, accountID string) (*acme.ExternalAccountKey, error) {
+	//nolint:nilnil // legacy
 	return nil, nil
 }
 
@@ -371,7 +372,6 @@ func sliceIndex(slice []string, item string) int {
 // removeElement deletes the item if it exists in the
 // slice. It returns a new slice, keeping the old one intact.
 func removeElement(slice []string, item string) []string {
-
 	newSlice := make([]string, 0)
 	index := sliceIndex(slice, item)
 	if index < 0 {

acme/db/nosql/eab_test.go

@@ -93,16 +93,16 @@ func TestDB_getDBExternalAccountKey(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if dbeak, err := d.getDBExternalAccountKey(context.Background(), keyID); err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -210,16 +210,16 @@ func TestDB_GetExternalAccountKey(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if eak, err := d.GetExternalAccountKey(context.Background(), provID, keyID); err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -374,16 +374,16 @@ func TestDB_GetExternalAccountKeyByReference(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if eak, err := d.GetExternalAccountKeyByReference(context.Background(), provID, tc.ref); err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -580,16 +580,16 @@ func TestDB_GetExternalAccountKeys(t *testing.T) {
 			cursor, limit := "", 0
 			if eaks, nextCursor, err := d.GetExternalAccountKeys(context.Background(), provID, cursor, limit); err != nil {
 				assert.Equals(t, "", nextCursor)
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.Equals(t, tc.err.Error(), err.Error())
 					}
@@ -672,7 +672,7 @@ func TestDB_DeleteExternalAccountKey(t *testing.T) {
 							return errors.New("force default")
 						}
 					},
-					MCmpAndSwap: func(bucket, key, old, new []byte) ([]byte, bool, error) {
+					MCmpAndSwap: func(bucket, key, old, nu []byte) ([]byte, bool, error) {
 						fmt.Println(string(bucket))
 						switch string(bucket) {
 						case string(externalAccountKeyIDsByReferenceTable):
@@ -882,16 +882,16 @@ func TestDB_DeleteExternalAccountKey(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if err := d.DeleteExternalAccountKey(context.Background(), provID, keyID); err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.Equals(t, err.Error(), tc.err.Error())
 					}

acme/db/nosql/nonce_test.go

@@ -146,16 +146,16 @@ func TestDB_DeleteNonce(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if err := d.DeleteNonce(context.Background(), acme.Nonce(nonceID)); err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}

acme/db/nosql/order_test.go

@@ -102,16 +102,16 @@ func TestDB_getDBOrder(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if dbo, err := d.getDBOrder(context.Background(), orderID); err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -206,16 +206,16 @@ func TestDB_GetOrder(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if o, err := d.GetOrder(context.Background(), orderID); err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -1003,16 +1003,16 @@ func TestDB_updateAddOrderIDs(t *testing.T) {
 			}
 
 			if err != nil {
-				switch k := err.(type) {
+				var ae *acme.Error
-				case *acme.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.acmeErr) {
-						assert.Equals(t, k.Type, tc.acmeErr.Type)
+						assert.Equals(t, ae.Type, tc.acmeErr.Type)
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
-						assert.Equals(t, k.Status, tc.acmeErr.Status)
+						assert.Equals(t, ae.Status, tc.acmeErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.acmeErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.acmeErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.acmeErr.Detail)
+						assert.Equals(t, ae.Detail, tc.acmeErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}

acme/errors.go

@@ -310,10 +310,11 @@ func NewErrorISE(msg string, args ...interface{}) *Error {
 
 // WrapError attempts to wrap the internal error.
 func WrapError(typ ProblemType, err error, msg string, args ...interface{}) *Error {
-	switch e := err.(type) {
+	var e *Error
-	case nil:
+	switch {
+	case err == nil:
 		return nil
-	case *Error:
+	case errors.As(err, &e):
 		if e.Err == nil {
 			e.Err = errors.Errorf(msg+"; "+e.Detail, args...)
 		} else {

acme/order.go

@@ -324,7 +324,6 @@ func numberOfIdentifierType(typ IdentifierType, ids []Identifier) int {
 // addresses or DNS names slice, depending on whether it can be parsed as an IP
 // or not. This might result in an additional SAN in the final certificate.
 func canonicalize(csr *x509.CertificateRequest) (canonicalized *x509.CertificateRequest) {
-
 	// for clarity only; we're operating on the same object by pointer
 	canonicalized = csr
 

acme/order_test.go

@@ -247,14 +247,14 @@ func TestOrder_UpdateStatus(t *testing.T) {
 			tc := run(t)
 			if err := tc.o.UpdateStatus(context.Background(), tc.db); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}
@@ -812,14 +812,14 @@ func TestOrder_Finalize(t *testing.T) {
 			tc := run(t)
 			if err := tc.o.Finalize(context.Background(), tc.db, tc.csr, tc.ca, tc.prov); err != nil {
 				if assert.NotNil(t, tc.err) {
-					switch k := err.(type) {
+					var k *Error
-					case *Error:
+					if errors.As(err, &k) {
 						assert.Equals(t, k.Type, tc.err.Type)
 						assert.Equals(t, k.Detail, tc.err.Detail)
 						assert.Equals(t, k.Status, tc.err.Status)
 						assert.Equals(t, k.Err.Error(), tc.err.Err.Error())
 						assert.Equals(t, k.Detail, tc.err.Detail)
-					default:
+					} else {
 						assert.FatalError(t, errors.New("unexpected error type"))
 					}
 				}
@@ -1474,14 +1474,14 @@ func TestOrder_sans(t *testing.T) {
 					t.Errorf("Order.sans() = %v, want error; got none", got)
 					return
 				}
-				switch k := err.(type) {
+				var k *Error
-				case *Error:
+				if errors.As(err, &k) {
 					assert.Equals(t, k.Type, tt.err.Type)
 					assert.Equals(t, k.Detail, tt.err.Detail)
 					assert.Equals(t, k.Status, tt.err.Status)
 					assert.Equals(t, k.Err.Error(), tt.err.Err.Error())
 					assert.Equals(t, k.Detail, tt.err.Detail)
-				default:
+				} else {
 					assert.FatalError(t, errors.New("unexpected error type"))
 				}
 				return

api/api.go

@@ -3,7 +3,7 @@ package api
 import (
 	"context"
 	"crypto"
-	"crypto/dsa" //nolint
+	"crypto/dsa" //nolint:staticcheck // support legacy algorithms
 	"crypto/ecdsa"
 	"crypto/ed25519"
 	"crypto/rsa"

api/log/log.go

@@ -21,6 +21,16 @@ type StackTracedError interface {
 	StackTrace() errors.StackTrace
 }
 
+// AsStackTracedError attempts to return the input error cast to a
+// StackTracedError interface.
+func AsStackTracedError(err error) (StackTracedError, bool) {
+	//nolint:errorlint // ignore type assertion warning. casting to interface is hard.
+	if st, ok := err.(StackTracedError); ok {
+		return st, ok
+	}
+	return nil, false
+}
+
 // Error adds to the response writer the given error if it implements
 // logging.ResponseLogger. If it does not implement it, then writes the error
 // using the log package.
@@ -38,8 +48,9 @@ func Error(rw http.ResponseWriter, err error) {
 		return
 	}
 
-	e, ok := err.(StackTracedError)
+	e, ok := AsStackTracedError(err)
 	if !ok {
+		//nolint:errorlint // ignore type assertion warning. casting to interface is hard.
 		e, ok = errors.Cause(err).(StackTracedError)
 	}
 

api/read/read_test.go

@@ -41,8 +41,8 @@ func TestJSON(t *testing.T) {
 			}
 
 			if tt.wantErr {
-				e, ok := err.(*errs.Error)
+				var e *errs.Error
-				if ok {
+				if errors.As(err, &e) {
 					if code := e.StatusCode(); code != 400 {
 						t.Errorf("error.StatusCode() = %v, wants 400", code)
 					}
@@ -102,15 +102,16 @@ func TestProtoJSON(t *testing.T) {
 			}
 
 			if tt.wantErr {
-				switch err.(type) {
+				var (
-				case badProtoJSONError:
+					ee  *errs.Error
+					bpe badProtoJSONError
+				)
+				switch {
+				case errors.As(err, &bpe):
 					assert.Contains(t, err.Error(), "syntax error")
-				case *errs.Error:
+				case errors.As(err, &ee):
-					var ee *errs.Error
-					if errors.As(err, &ee) {
 					assert.Equal(t, http.StatusBadRequest, ee.Status)
 				}
-				}
 				return
 			}
 

api/render/render.go

@@ -72,12 +72,22 @@ type RenderableError interface {
 	Render(http.ResponseWriter)
 }
 
+// AsRenderableError attempts to return an error type that implements the
+// RenderableError interface.
+func AsRenderableError(err error) (RenderableError, bool) {
+	//nolint:errorlint // ignore type assertion warning. casting to interface is hard.
+	if r, ok := err.(RenderableError); ok {
+		return r, true
+	}
+	return nil, false
+}
+
 // Error marshals the JSON representation of err to w. In case err implements
 // RenderableError its own Render method will be called instead.
 func Error(w http.ResponseWriter, err error) {
 	log.Error(w, err)
 
-	if e, ok := err.(RenderableError); ok {
+	if e, ok := AsRenderableError(err); ok {
 		e.Render(w)
 
 		return
@@ -97,6 +107,16 @@ type StatusCodedError interface {
 	StatusCode() int
 }
 
+// AsStatusCodedError attempts to return an error type that implements the
+// StatusCodedError interface.
+func AsStatusCodedError(err error) (StatusCodedError, bool) {
+	//nolint:errorlint // ignore type assertion warning. casting to interface is hard.
+	if sc, ok := err.(StatusCodedError); ok {
+		return sc, true
+	}
+	return nil, false
+}
+
 func statusCodeFromError(err error) (code int) {
 	code = http.StatusInternalServerError
 
@@ -105,12 +125,13 @@ func statusCodeFromError(err error) (code int) {
 	}
 
 	for err != nil {
-		if sc, ok := err.(StatusCodedError); ok {
+		if sc, ok := AsStatusCodedError(err); ok {
 			code = sc.StatusCode()
 
 			break
 		}
 
+		//nolint:errorlint // ignore type assertion warning. casting to interface is hard.
 		cause, ok := err.(causer)
 		if !ok {
 			break

api/revoke_test.go

@@ -62,12 +62,12 @@ func TestRevokeRequestValidate(t *testing.T) {
 	for name, tc := range tests {
 		t.Run(name, func(t *testing.T) {
 			if err := tc.rr.Validate(); err != nil {
-				switch v := err.(type) {
+				var ee *errs.Error
-				case *errs.Error:
+				if errors.As(err, &ee) {
-					assert.HasPrefix(t, v.Error(), tc.err.Error())
+					assert.HasPrefix(t, ee.Error(), tc.err.Error())
-					assert.Equals(t, v.StatusCode(), tc.err.Status)
+					assert.Equals(t, ee.StatusCode(), tc.err.Status)
-				default:
+				} else {
-					t.Errorf("unexpected error type: %T", v)
+					t.Errorf("unexpected error type: %T", err)
 				}
 			} else {
 				assert.Nil(t, tc.err)

authority/admin/api/acme.go

@@ -84,7 +84,6 @@ func (h *acmeAdminResponder) DeleteExternalAccountKey(w http.ResponseWriter, r *
 }
 
 func eakToLinked(k *acme.ExternalAccountKey) *linkedca.EABKey {
-
 	if k == nil {
 		return nil
 	}

authority/admin/api/admin_test.go

@@ -229,12 +229,14 @@ func TestCreateAdminRequest_Validate(t *testing.T) {
 
 			if err != nil {
 				assert.Type(t, &admin.Error{}, err)
-				adminErr, _ := err.(*admin.Error)
+				var adminErr *admin.Error
+				if assert.True(t, errors.As(err, &adminErr)) {
 					assert.Equals(t, tt.err.Type, adminErr.Type)
 					assert.Equals(t, tt.err.Detail, adminErr.Detail)
 					assert.Equals(t, tt.err.Status, adminErr.Status)
 					assert.Equals(t, tt.err.Message, adminErr.Message)
 				}
+			}
 		})
 	}
 }
@@ -278,11 +280,13 @@ func TestUpdateAdminRequest_Validate(t *testing.T) {
 
 			if err != nil {
 				assert.Type(t, &admin.Error{}, err)
-				adminErr, _ := err.(*admin.Error)
+				var ae *admin.Error
-				assert.Equals(t, tt.err.Type, adminErr.Type)
+				if assert.True(t, errors.As(err, &ae)) {
-				assert.Equals(t, tt.err.Detail, adminErr.Detail)
+					assert.Equals(t, tt.err.Type, ae.Type)
-				assert.Equals(t, tt.err.Status, adminErr.Status)
+					assert.Equals(t, tt.err.Detail, ae.Detail)
-				assert.Equals(t, tt.err.Message, adminErr.Message)
+					assert.Equals(t, tt.err.Status, ae.Status)
+					assert.Equals(t, tt.err.Message, ae.Message)
+				}
 			}
 		})
 	}

authority/admin/api/middleware.go

@@ -30,7 +30,6 @@ func requireAPIEnabled(next http.HandlerFunc) http.HandlerFunc {
 // extractAuthorizeTokenAdmin is a middleware that extracts and caches the bearer token.
 func extractAuthorizeTokenAdmin(next http.HandlerFunc) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-
 		tok := r.Header.Get("Authorization")
 		if tok == "" {
 			render.Error(w, admin.NewError(admin.ErrorUnauthorizedType,

authority/admin/api/policy.go

@@ -50,7 +50,8 @@ func (par *policyAdminResponder) GetAuthorityPolicy(w http.ResponseWriter, r *ht
 
 	auth := mustAuthority(ctx)
 	authorityPolicy, err := auth.GetAuthorityPolicy(r.Context())
-	if ae, ok := err.(*admin.Error); ok && !ae.IsType(admin.ErrorNotFoundType) {
+	var ae *admin.Error
+	if errors.As(err, &ae) && !ae.IsType(admin.ErrorNotFoundType) {
 		render.Error(w, admin.WrapErrorISE(ae, "error retrieving authority policy"))
 		return
 	}
@@ -74,7 +75,8 @@ func (par *policyAdminResponder) CreateAuthorityPolicy(w http.ResponseWriter, r
 	auth := mustAuthority(ctx)
 	authorityPolicy, err := auth.GetAuthorityPolicy(ctx)
 
-	if ae, ok := err.(*admin.Error); ok && !ae.IsType(admin.ErrorNotFoundType) {
+	var ae *admin.Error
+	if errors.As(err, &ae) && !ae.IsType(admin.ErrorNotFoundType) {
 		render.Error(w, admin.WrapErrorISE(err, "error retrieving authority policy"))
 		return
 	}
@@ -125,7 +127,8 @@ func (par *policyAdminResponder) UpdateAuthorityPolicy(w http.ResponseWriter, r
 	auth := mustAuthority(ctx)
 	authorityPolicy, err := auth.GetAuthorityPolicy(ctx)
 
-	if ae, ok := err.(*admin.Error); ok && !ae.IsType(admin.ErrorNotFoundType) {
+	var ae *admin.Error
+	if errors.As(err, &ae) && !ae.IsType(admin.ErrorNotFoundType) {
 		render.Error(w, admin.WrapErrorISE(err, "error retrieving authority policy"))
 		return
 	}
@@ -175,7 +178,8 @@ func (par *policyAdminResponder) DeleteAuthorityPolicy(w http.ResponseWriter, r
 	auth := mustAuthority(ctx)
 	authorityPolicy, err := auth.GetAuthorityPolicy(ctx)
 
-	if ae, ok := err.(*admin.Error); ok && !ae.IsType(admin.ErrorNotFoundType) {
+	var ae *admin.Error
+	if errors.As(err, &ae) && !ae.IsType(admin.ErrorNotFoundType) {
 		render.Error(w, admin.WrapErrorISE(ae, "error retrieving authority policy"))
 		return
 	}
@@ -468,7 +472,6 @@ func isBadRequest(err error) bool {
 }
 
 func validatePolicy(p *linkedca.Policy) error {
-
 	// convert the policy; return early if nil
 	options := policy.LinkedToCertificates(p)
 	if options == nil {

authority/admin/db/nosql/admin.go

@@ -111,14 +111,14 @@ func (db *DB) GetAdmins(ctx context.Context) ([]*linkedca.Admin, error) {
 	for _, entry := range dbEntries {
 		adm, err := db.unmarshalAdmin(entry.Value, string(entry.Key))
 		if err != nil {
-			switch k := err.(type) {
+			var ae *admin.Error
-			case *admin.Error:
+			if errors.As(err, &ae) {
-				if k.IsType(admin.ErrorDeletedType) || k.IsType(admin.ErrorAuthorityMismatchType) {
+				if ae.IsType(admin.ErrorDeletedType) || ae.IsType(admin.ErrorAuthorityMismatchType) {
 					continue
 				} else {
 					return nil, err
 				}
-			default:
+			} else {
 				return nil, err
 			}
 		}

authority/admin/db/nosql/admin_test.go

@@ -68,16 +68,16 @@ func TestDB_getDBAdminBytes(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if b, err := d.getDBAdminBytes(context.Background(), adminID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -192,16 +192,16 @@ func TestDB_getDBAdmin(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if dba, err := d.getDBAdmin(context.Background(), adminID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -280,16 +280,16 @@ func TestDB_unmarshalDBAdmin(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{authorityID: admin.DefaultAuthorityID}
 			if dba, err := d.unmarshalDBAdmin(tc.in, adminID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -355,16 +355,16 @@ func TestDB_unmarshalAdmin(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{authorityID: admin.DefaultAuthorityID}
 			if adm, err := d.unmarshalAdmin(tc.in, adminID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -509,16 +509,16 @@ func TestDB_GetAdmin(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if adm, err := d.GetAdmin(context.Background(), adminID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -661,16 +661,16 @@ func TestDB_DeleteAdmin(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if err := d.DeleteAdmin(context.Background(), adminID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -812,16 +812,16 @@ func TestDB_UpdateAdmin(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if err := d.UpdateAdmin(context.Background(), tc.adm); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -910,16 +910,16 @@ func TestDB_CreateAdmin(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if err := d.CreateAdmin(context.Background(), tc.adm); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -1086,16 +1086,16 @@ func TestDB_GetAdmins(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if admins, err := d.GetAdmins(context.Background()); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}

authority/admin/db/nosql/policy.go

@@ -83,6 +83,7 @@ func (db *DB) getDBAuthorityPolicyBytes(ctx context.Context, authorityID string)
 
 func (db *DB) unmarshalDBAuthorityPolicy(data []byte) (*dbAuthorityPolicy, error) {
 	if len(data) == 0 {
+		//nolint:nilnil // legacy
 		return nil, nil
 	}
 	var dba = new(dbAuthorityPolicy)
@@ -102,6 +103,7 @@ func (db *DB) getDBAuthorityPolicy(ctx context.Context, authorityID string) (*db
 		return nil, err
 	}
 	if dbap == nil {
+		//nolint:nilnil // legacy
 		return nil, nil
 	}
 	if dbap.AuthorityID != authorityID {
@@ -112,7 +114,6 @@ func (db *DB) getDBAuthorityPolicy(ctx context.Context, authorityID string) (*db
 }
 
 func (db *DB) CreateAuthorityPolicy(ctx context.Context, policy *linkedca.Policy) error {
-
 	dbap := &dbAuthorityPolicy{
 		ID:          db.authorityID,
 		AuthorityID: db.authorityID,
@@ -228,7 +229,6 @@ func dbToLinked(p *dbPolicy) *linkedca.Policy {
 }
 
 func linkedToDB(p *linkedca.Policy) *dbPolicy {
-
 	if p == nil {
 		return nil
 	}

authority/admin/db/nosql/policy_test.go

@@ -72,16 +72,16 @@ func TestDB_getDBAuthorityPolicyBytes(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if b, err := d.getDBAuthorityPolicyBytes(tc.ctx, tc.authorityID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -208,16 +208,16 @@ func TestDB_getDBAuthorityPolicy(t *testing.T) {
 			dbp, err := d.getDBAuthorityPolicy(tc.ctx, tc.authorityID)
 			switch {
 			case err != nil:
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -309,16 +309,16 @@ func TestDB_CreateAuthorityPolicy(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: tc.authorityID}
 			if err := d.CreateAuthorityPolicy(tc.ctx, tc.policy); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -406,16 +406,16 @@ func TestDB_GetAuthorityPolicy(t *testing.T) {
 			d := DB{db: tc.db, authorityID: tc.authorityID}
 			got, err := d.GetAuthorityPolicy(tc.ctx)
 			if err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -578,16 +578,16 @@ func TestDB_UpdateAuthorityPolicy(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: tc.authorityID}
 			if err := d.UpdateAuthorityPolicy(tc.ctx, tc.policy); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -718,16 +718,16 @@ func TestDB_DeleteAuthorityPolicy(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: tc.authorityID}
 			if err := d.DeleteAuthorityPolicy(tc.ctx); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}

authority/admin/db/nosql/provisioner.go

@@ -122,14 +122,14 @@ func (db *DB) GetProvisioners(ctx context.Context) ([]*linkedca.Provisioner, err
 	for _, entry := range dbEntries {
 		prov, err := db.unmarshalProvisioner(entry.Value, string(entry.Key))
 		if err != nil {
-			switch k := err.(type) {
+			var ae *admin.Error
-			case *admin.Error:
+			if errors.As(err, &ae) {
-				if k.IsType(admin.ErrorDeletedType) || k.IsType(admin.ErrorAuthorityMismatchType) {
+				if ae.IsType(admin.ErrorDeletedType) || ae.IsType(admin.ErrorAuthorityMismatchType) {
 					continue
 				} else {
 					return nil, err
 				}
-			default:
+			} else {
 				return nil, err
 			}
 		}

authority/admin/db/nosql/provisioner_test.go

@@ -67,16 +67,16 @@ func TestDB_getDBProvisionerBytes(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db}
 			if b, err := d.getDBProvisionerBytes(context.Background(), provID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -189,16 +189,16 @@ func TestDB_getDBProvisioner(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if dbp, err := d.getDBProvisioner(context.Background(), provID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -275,16 +275,16 @@ func TestDB_unmarshalDBProvisioner(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{authorityID: admin.DefaultAuthorityID}
 			if dbp, err := d.unmarshalDBProvisioner(tc.in, provID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -397,16 +397,16 @@ func TestDB_unmarshalProvisioner(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{authorityID: admin.DefaultAuthorityID}
 			if prov, err := d.unmarshalProvisioner(tc.in, provID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -535,16 +535,16 @@ func TestDB_GetProvisioner(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if prov, err := d.GetProvisioner(context.Background(), provID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -683,16 +683,16 @@ func TestDB_DeleteProvisioner(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if err := d.DeleteProvisioner(context.Background(), provID); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -844,16 +844,16 @@ func TestDB_GetProvisioners(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if provs, err := d.GetProvisioners(context.Background()); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -952,16 +952,16 @@ func TestDB_CreateProvisioner(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if err := d.CreateProvisioner(context.Background(), tc.prov); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}
@@ -1188,16 +1188,16 @@ func TestDB_UpdateProvisioner(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			d := DB{db: tc.db, authorityID: admin.DefaultAuthorityID}
 			if err := d.UpdateProvisioner(context.Background(), tc.prov); err != nil {
-				switch k := err.(type) {
+				var ae *admin.Error
-				case *admin.Error:
+				if errors.As(err, &ae) {
 					if assert.NotNil(t, tc.adminErr) {
-						assert.Equals(t, k.Type, tc.adminErr.Type)
+						assert.Equals(t, ae.Type, tc.adminErr.Type)
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
-						assert.Equals(t, k.Status, tc.adminErr.Status)
+						assert.Equals(t, ae.Status, tc.adminErr.Status)
-						assert.Equals(t, k.Err.Error(), tc.adminErr.Err.Error())
+						assert.Equals(t, ae.Err.Error(), tc.adminErr.Err.Error())
-						assert.Equals(t, k.Detail, tc.adminErr.Detail)
+						assert.Equals(t, ae.Detail, tc.adminErr.Detail)
 					}
-				default:
+				} else {
 					if assert.NotNil(t, tc.err) {
 						assert.HasPrefix(t, err.Error(), tc.err.Error())
 					}

authority/admin/errors.go

@@ -156,16 +156,17 @@ func NewErrorISE(msg string, args ...interface{}) *Error {
 
 // WrapError attempts to wrap the internal error.
 func WrapError(typ ProblemType, err error, msg string, args ...interface{}) *Error {
-	switch e := err.(type) {
+	var ee *Error
-	case nil:
+	switch {
+	case err == nil:
 		return nil
-	case *Error:
+	case errors.As(err, &ee):
-		if e.Err == nil {
+		if ee.Err == nil {
-			e.Err = errors.Errorf(msg+"; "+e.Detail, args...)
+			ee.Err = errors.Errorf(msg+"; "+ee.Detail, args...)
 		} else {
-			e.Err = errors.Wrapf(e.Err, msg, args...)
+			ee.Err = errors.Wrapf(ee.Err, msg, args...)
 		}
-		return e
+		return ee
 	default:
 		return newError(typ, errors.Wrapf(err, msg, args...))
 	}

authority/authority.go

@@ -368,7 +368,7 @@ func (a *Authority) init() error {
 			}
 			options.Signer, err = a.keyManager.CreateSigner(&kmsapi.CreateSignerRequest{
 				SigningKey: a.config.IntermediateKey,
-				Password:   []byte(a.password),
+				Password:   a.password,
 			})
 			if err != nil {
 				return err
@@ -434,7 +434,7 @@ func (a *Authority) init() error {
 		if a.config.SSH.HostKey != "" {
 			signer, err := a.keyManager.CreateSigner(&kmsapi.CreateSignerRequest{
 				SigningKey: a.config.SSH.HostKey,
-				Password:   []byte(a.sshHostPassword),
+				Password:   a.sshHostPassword,
 			})
 			if err != nil {
 				return err
@@ -460,7 +460,7 @@ func (a *Authority) init() error {
 		if a.config.SSH.UserKey != "" {
 			signer, err := a.keyManager.CreateSigner(&kmsapi.CreateSignerRequest{
 				SigningKey: a.config.SSH.UserKey,
-				Password:   []byte(a.sshUserPassword),
+				Password:   a.sshUserPassword,
 			})
 			if err != nil {
 				return err
@@ -545,7 +545,7 @@ func (a *Authority) init() error {
 		options.CertificateChain = append(options.CertificateChain, a.rootX509Certs...)
 		options.Signer, err = a.keyManager.CreateSigner(&kmsapi.CreateSignerRequest{
 			SigningKey: a.config.IntermediateKey,
-			Password:   []byte(a.password),
+			Password:   a.password,
 		})
 		if err != nil {
 			return err
@@ -554,7 +554,7 @@ func (a *Authority) init() error {
 		if km, ok := a.keyManager.(kmsapi.Decrypter); ok {
 			options.Decrypter, err = km.CreateDecrypter(&kmsapi.CreateDecrypterRequest{
 				DecryptionKey: a.config.IntermediateKey,
-				Password:      []byte(a.password),
+				Password:      a.password,
 			})
 			if err != nil {
 				return err

authority/authorize.go

@@ -12,6 +12,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/pkg/errors"
 	"github.com/smallstep/certificates/authority/admin"
 	"github.com/smallstep/certificates/authority/provisioner"
 	"github.com/smallstep/certificates/errs"
@@ -416,16 +417,16 @@ func (a *Authority) AuthorizeRenewToken(ctx context.Context, ott string) (*x509.
 		Subject: leaf.Subject.CommonName,
 		Time:    time.Now().UTC(),
 	}, time.Minute); err != nil {
-		switch err {
+		switch {
-		case jose.ErrInvalidIssuer:
+		case errors.Is(err, jose.ErrInvalidIssuer):
 			return nil, errs.UnauthorizedErr(err, errs.WithMessage("error validating renew token: invalid issuer claim (iss)"))
-		case jose.ErrInvalidSubject:
+		case errors.Is(err, jose.ErrInvalidSubject):
 			return nil, errs.UnauthorizedErr(err, errs.WithMessage("error validating renew token: invalid subject claim (sub)"))
-		case jose.ErrNotValidYet:
+		case errors.Is(err, jose.ErrNotValidYet):
 			return nil, errs.UnauthorizedErr(err, errs.WithMessage("error validating renew token: token not valid yet (nbf)"))
-		case jose.ErrExpired:
+		case errors.Is(err, jose.ErrExpired):
 			return nil, errs.UnauthorizedErr(err, errs.WithMessage("error validating renew token: token is expired (exp)"))
-		case jose.ErrIssuedInTheFuture:
+		case errors.Is(err, jose.ErrIssuedInTheFuture):
 			return nil, errs.UnauthorizedErr(err, errs.WithMessage("error validating renew token: token issued in the future (iat)"))
 		default:
 			return nil, errs.UnauthorizedErr(err, errs.WithMessage("error validating renew token"))

authority/authorize_test.go

@@ -313,7 +313,7 @@ func TestAuthority_authorizeToken(t *testing.T) {
 			p, err := tc.auth.authorizeToken(context.Background(), tc.token)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -399,7 +399,7 @@ func TestAuthority_authorizeRevoke(t *testing.T) {
 
 			if err := tc.auth.authorizeRevoke(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -484,7 +484,7 @@ func TestAuthority_authorizeSign(t *testing.T) {
 			got, err := tc.auth.authorizeSign(context.Background(), tc.token)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -743,13 +743,13 @@ func TestAuthority_Authorize(t *testing.T) {
 			if err != nil {
 				if assert.NotNil(t, tc.err, fmt.Sprintf("unexpected error: %s", err)) {
 					assert.Nil(t, got)
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
 
-					ctxErr, ok := err.(*errs.Error)
+					var ctxErr *errs.Error
-					assert.Fatal(t, ok, "error is not of type *errs.Error")
+					assert.Fatal(t, errors.As(err, &ctxErr), "error is not of type *errs.Error")
 					assert.Equals(t, ctxErr.Details["token"], tc.token)
 				}
 			} else {
@@ -879,13 +879,13 @@ func TestAuthority_authorizeRenew(t *testing.T) {
 			err := tc.auth.authorizeRenew(tc.cert)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCoder interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
 
-					ctxErr, ok := err.(*errs.Error)
+					var ctxErr *errs.Error
-					assert.Fatal(t, ok, "error is not of type *errs.Error")
+					assert.Fatal(t, errors.As(err, &ctxErr), "error is not of type *errs.Error")
 					assert.Equals(t, ctxErr.Details["serialNumber"], tc.cert.SerialNumber.String())
 				}
 			} else {
@@ -1027,7 +1027,7 @@ func TestAuthority_authorizeSSHSign(t *testing.T) {
 			got, err := tc.auth.authorizeSSHSign(context.Background(), tc.token)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -1144,7 +1144,7 @@ func TestAuthority_authorizeSSHRenew(t *testing.T) {
 			got, err := tc.auth.authorizeSSHRenew(context.Background(), tc.token)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -1244,7 +1244,7 @@ func TestAuthority_authorizeSSHRevoke(t *testing.T) {
 
 			if err := tc.auth.authorizeSSHRevoke(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -1337,7 +1337,7 @@ func TestAuthority_authorizeSSHRekey(t *testing.T) {
 			cert, signOpts, err := tc.auth.authorizeSSHRekey(context.Background(), tc.token)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())

authority/policy.go

@@ -119,7 +119,6 @@ func (a *Authority) RemoveAuthorityPolicy(ctx context.Context) error {
 }
 
 func (a *Authority) checkAuthorityPolicy(ctx context.Context, currentAdmin *linkedca.Admin, p *linkedca.Policy) error {
-
 	// no policy and thus nothing to evaluate; return early
 	if p == nil {
 		return nil
@@ -138,7 +137,6 @@ func (a *Authority) checkAuthorityPolicy(ctx context.Context, currentAdmin *link
 }
 
 func (a *Authority) checkProvisionerPolicy(ctx context.Context, provName string, p *linkedca.Policy) error {
-
 	// no policy and thus nothing to evaluate; return early
 	if p == nil {
 		return nil
@@ -157,7 +155,6 @@ func (a *Authority) checkProvisionerPolicy(ctx context.Context, provName string,
 // checkPolicy checks if a new or updated policy configuration results in the user
 // locking themselves or other admins out of the CA.
 func (a *Authority) checkPolicy(ctx context.Context, currentAdmin *linkedca.Admin, otherAdmins []*linkedca.Admin, p *linkedca.Policy) error {
-
 	// convert the policy; return early if nil
 	policyOptions := authPolicy.LinkedToCertificates(p)
 	if policyOptions == nil {
@@ -216,7 +213,6 @@ func (a *Authority) reloadPolicyEngines(ctx context.Context) error {
 	)
 
 	if a.config.AuthorityConfig.EnableAdmin {
-
 		// temporarily disable policy loading when LinkedCA is in use
 		if _, ok := a.adminDB.(*linkedCaClient); ok {
 			return nil

authority/policy/engine.go

@@ -17,9 +17,9 @@ type Engine struct {
 
 // New returns a new Engine using Options.
 func New(options *Options) (*Engine, error) {
-
 	// if no options provided, return early
 	if options == nil {
+		//nolint:nilnil // legacy
 		return nil, nil
 	}
 
@@ -56,7 +56,6 @@ func New(options *Options) (*Engine, error) {
 // the X.509 policy (if available) and returns an error if one of the
 // names in the certificate is not allowed.
 func (e *Engine) IsX509CertificateAllowed(cert *x509.Certificate) error {
-
 	// return early if there's no policy to evaluate
 	if e == nil || e.x509Policy == nil {
 		return nil
@@ -69,7 +68,6 @@ func (e *Engine) IsX509CertificateAllowed(cert *x509.Certificate) error {
 // AreSANsAllowed evaluates the slice of SANs against the X.509 policy
 // (if available) and returns an error if one of the SANs is not allowed.
 func (e *Engine) AreSANsAllowed(sans []string) error {
-
 	// return early if there's no policy to evaluate
 	if e == nil || e.x509Policy == nil {
 		return nil
@@ -83,7 +81,6 @@ func (e *Engine) AreSANsAllowed(sans []string) error {
 // user or host policy (if configured) and returns an error if one of the
 // principals in the certificate is not allowed.
 func (e *Engine) IsSSHCertificateAllowed(cert *ssh.Certificate) error {
-
 	// return early if there's no policy to evaluate
 	if e == nil || (e.sshHostPolicy == nil && e.sshUserPolicy == nil) {
 		return nil

authority/policy/policy.go

@@ -19,7 +19,6 @@ type HostPolicy policy.SSHNamePolicyEngine
 
 // NewX509PolicyEngine creates a new x509 name policy engine
 func NewX509PolicyEngine(policyOptions X509PolicyOptionsInterface) (X509Policy, error) {
-
 	// return early if no policy engine options to configure
 	if policyOptions == nil {
 		return nil, nil
@@ -92,7 +91,6 @@ func NewSSHHostPolicyEngine(policyOptions SSHPolicyOptionsInterface) (HostPolicy
 
 // newSSHPolicyEngine creates a new SSH name policy engine
 func newSSHPolicyEngine(policyOptions SSHPolicyOptionsInterface, typ sshPolicyEngineType) (policy.SSHNamePolicyEngine, error) {
-
 	// return early if no policy engine options to configure
 	if policyOptions == nil {
 		return nil, nil
@@ -143,7 +141,6 @@ func newSSHPolicyEngine(policyOptions SSHPolicyOptionsInterface, typ sshPolicyEn
 }
 
 func LinkedToCertificates(p *linkedca.Policy) *Options {
-
 	// return early
 	if p == nil {
 		return nil

authority/policy_test.go

@@ -185,12 +185,12 @@ func TestAuthority_checkPolicy(t *testing.T) {
 			} else {
 				assert.IsType(t, &PolicyError{}, err)
 
-				pe, ok := err.(*PolicyError)
+				var pe *PolicyError
-				assert.True(t, ok)
+				if assert.True(t, errors.As(err, &pe)) {
-
 					assert.Equal(t, tc.err.Typ, pe.Typ)
 					assert.Equal(t, tc.err.Error(), pe.Error())
 				}
+			}
 		})
 	}
 }
@@ -1179,10 +1179,11 @@ func TestAuthority_RemoveAuthorityPolicy(t *testing.T) {
 			}
 			err := a.RemoveAuthorityPolicy(tt.args.ctx)
 			if err != nil {
-				pe, ok := err.(*PolicyError)
+				var pe *PolicyError
-				assert.True(t, ok)
+				if assert.True(t, errors.As(err, &pe)) {
 					assert.Equal(t, tt.wantErr.Typ, pe.Typ)
 					assert.Equal(t, tt.wantErr.Err.Error(), pe.Err.Error())
+				}
 				return
 			}
 		})
@@ -1250,10 +1251,11 @@ func TestAuthority_GetAuthorityPolicy(t *testing.T) {
 			}
 			got, err := a.GetAuthorityPolicy(tt.args.ctx)
 			if err != nil {
-				pe, ok := err.(*PolicyError)
+				var pe *PolicyError
-				assert.True(t, ok)
+				if assert.True(t, errors.As(err, &pe)) {
 					assert.Equal(t, tt.wantErr.Typ, pe.Typ)
 					assert.Equal(t, tt.wantErr.Err.Error(), pe.Err.Error())
+				}
 				return
 			}
 			if !reflect.DeepEqual(got, tt.want) {
@@ -1429,10 +1431,11 @@ func TestAuthority_CreateAuthorityPolicy(t *testing.T) {
 			}
 			got, err := a.CreateAuthorityPolicy(tt.args.ctx, tt.args.adm, tt.args.p)
 			if err != nil {
-				pe, ok := err.(*PolicyError)
+				var pe *PolicyError
-				assert.True(t, ok)
+				if assert.True(t, errors.As(err, &pe)) {
 					assert.Equal(t, tt.wantErr.Typ, pe.Typ)
 					assert.Equal(t, tt.wantErr.Err.Error(), pe.Err.Error())
+				}
 				return
 			}
 			if !reflect.DeepEqual(got, tt.want) {
@@ -1611,10 +1614,11 @@ func TestAuthority_UpdateAuthorityPolicy(t *testing.T) {
 			}
 			got, err := a.UpdateAuthorityPolicy(tt.args.ctx, tt.args.adm, tt.args.p)
 			if err != nil {
-				pe, ok := err.(*PolicyError)
+				var pe *PolicyError
-				assert.True(t, ok)
+				if assert.True(t, errors.As(err, &pe)) {
 					assert.Equal(t, tt.wantErr.Typ, pe.Typ)
 					assert.Equal(t, tt.wantErr.Err.Error(), pe.Err.Error())
+				}
 				return
 			}
 			if !reflect.DeepEqual(got, tt.want) {

authority/provisioner/acme.go

@@ -217,7 +217,6 @@ type ACMEIdentifier struct {
 // AuthorizeOrderIdentifier verifies the provisioner is allowed to issue a
 // certificate for an ACME Order Identifier.
 func (p *ACME) AuthorizeOrderIdentifier(ctx context.Context, identifier ACMEIdentifier) error {
-
 	x509Policy := p.ctl.getPolicy().getX509()
 
 	// identifier is allowed if no policy is configured

authority/provisioner/acme_test.go

@@ -224,7 +224,7 @@ func TestACME_AuthorizeRenew(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			tc := tt(t)
 			if err := tc.p.AuthorizeRenew(context.Background(), tc.cert); err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tc.code)
 				if assert.NotNil(t, tc.err) {
@@ -259,7 +259,7 @@ func TestACME_AuthorizeSign(t *testing.T) {
 			tc := tt(t)
 			if opts, err := tc.p.AuthorizeSign(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())

authority/provisioner/aws.go

@@ -35,7 +35,7 @@ const awsIdentityURL = "http://169.254.169.254/latest/dynamic/instance-identity/
 const awsSignatureURL = "http://169.254.169.254/latest/dynamic/instance-identity/signature"
 
 // awsAPITokenURL is the url used to get the IMDSv2 API token
-// nolint:gosec // no credentials here
+//nolint:gosec,goimports // no credentials here
 const awsAPITokenURL = "http://169.254.169.254/latest/api/token"
 
 // awsAPITokenTTL is the default TTL to use when requesting IMDSv2 API tokens
@@ -43,11 +43,11 @@ const awsAPITokenURL = "http://169.254.169.254/latest/api/token"
 const awsAPITokenTTL = "30"
 
 // awsMetadataTokenHeader is the header that must be passed with every IMDSv2 request
-// nolint:gosec // no credentials here
+//nolint:gosec,goimports // no credentials here
 const awsMetadataTokenHeader = "X-aws-ec2-metadata-token"
 
 // awsMetadataTokenTTLHeader is the header used to indicate the token TTL requested
-// nolint:gosec // no credentials here
+//nolint:gosec,goimports // no credentials here
 const awsMetadataTokenTTLHeader = "X-aws-ec2-metadata-token-ttl-seconds"
 
 // awsCertificate is the certificate used to validate the instance identity

authority/provisioner/aws_test.go

@@ -522,7 +522,7 @@ func TestAWS_authorizeToken(t *testing.T) {
 			tc := tt(t)
 			if claims, err := tc.p.authorizeToken(tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -669,7 +669,7 @@ func TestAWS_AuthorizeSign(t *testing.T) {
 				t.Errorf("AWS.AuthorizeSign() error = %v, wantErr %v", err, tt.wantErr)
 				return
 			case err != nil:
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			default:
@@ -807,7 +807,7 @@ func TestAWS_AuthorizeSSHSign(t *testing.T) {
 				return
 			}
 			if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 				assert.Nil(t, got)
@@ -864,7 +864,7 @@ func TestAWS_AuthorizeRenew(t *testing.T) {
 			if err := tt.aws.AuthorizeRenew(context.Background(), tt.args.cert); (err != nil) != tt.wantErr {
 				t.Errorf("AWS.AuthorizeRenew() error = %v, wantErr %v", err, tt.wantErr)
 			} else if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			}

authority/provisioner/azure.go

@@ -24,8 +24,7 @@ import (
 // azureOIDCBaseURL is the base discovery url for Microsoft Azure tokens.
 const azureOIDCBaseURL = "https://login.microsoftonline.com"
 
-// azureIdentityTokenURL is the URL to get the identity token for an instance.
+//nolint:gosec // azureIdentityTokenURL is the URL to get the identity token for an instance.
-// nolint:gosec // no credentials here
 const azureIdentityTokenURL = "http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=https%3A%2F%2Fmanagement.azure.com%2F"
 
 // azureDefaultAudience is the default audience used.

authority/provisioner/azure_test.go

@@ -336,7 +336,7 @@ func TestAzure_authorizeToken(t *testing.T) {
 			tc := tt(t)
 			if claims, name, group, subscriptionID, objectID, err := tc.p.authorizeToken(tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -498,7 +498,7 @@ func TestAzure_AuthorizeSign(t *testing.T) {
 				t.Errorf("Azure.AuthorizeSign() error = %v, wantErr %v", err, tt.wantErr)
 				return
 			case err != nil:
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			default:
@@ -576,7 +576,7 @@ func TestAzure_AuthorizeRenew(t *testing.T) {
 			if err := tt.azure.AuthorizeRenew(context.Background(), tt.args.cert); (err != nil) != tt.wantErr {
 				t.Errorf("Azure.AuthorizeRenew() error = %v, wantErr %v", err, tt.wantErr)
 			} else if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			}
@@ -673,7 +673,7 @@ func TestAzure_AuthorizeSSHSign(t *testing.T) {
 				return
 			}
 			if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 				assert.Nil(t, got)

authority/provisioner/claims.go

@@ -38,7 +38,8 @@ type Claimer struct {
 // NewClaimer initializes a new claimer with the given claims.
 func NewClaimer(claims *Claims, global Claims) (*Claimer, error) {
 	c := &Claimer{global: global, claims: claims}
-	return c, c.Validate()
+	err := c.Validate()
+	return c, err
 }
 
 // Claims returns the merge of the inner and global claims.

authority/provisioner/gcp.go

@@ -102,7 +102,6 @@ func (p *GCP) GetID() string {
 		return p.ID
 	}
 	return p.GetIDForToken()
-
 }
 
 // GetIDForToken returns an identifier that will be used to load the provisioner

authority/provisioner/gcp_test.go

@@ -391,7 +391,7 @@ func TestGCP_authorizeToken(t *testing.T) {
 			tc := tt(t)
 			if claims, err := tc.p.authorizeToken(tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -541,7 +541,7 @@ func TestGCP_AuthorizeSign(t *testing.T) {
 				t.Errorf("GCP.AuthorizeSign() error = %v, wantErr %v", err, tt.wantErr)
 				return
 			case err != nil:
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			default:
@@ -682,7 +682,7 @@ func TestGCP_AuthorizeSSHSign(t *testing.T) {
 				return
 			}
 			if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 				assert.Nil(t, got)
@@ -739,7 +739,7 @@ func TestGCP_AuthorizeRenew(t *testing.T) {
 			if err := tt.prov.AuthorizeRenew(context.Background(), tt.args.cert); (err != nil) != tt.wantErr {
 				t.Errorf("GCP.AuthorizeRenew() error = %v, wantErr %v", err, tt.wantErr)
 			} else if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCoder interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			}

authority/provisioner/jwk_test.go

@@ -185,7 +185,7 @@ func TestJWK_authorizeToken(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			if got, err := tt.prov.authorizeToken(tt.args.token, testAudiences.Sign); err != nil {
 				if assert.NotNil(t, tt.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tt.code)
 					assert.HasPrefix(t, err.Error(), tt.err.Error())
@@ -225,7 +225,7 @@ func TestJWK_AuthorizeRevoke(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			if err := tt.prov.AuthorizeRevoke(context.Background(), tt.args.token); err != nil {
 				if assert.NotNil(t, tt.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tt.code)
 					assert.HasPrefix(t, err.Error(), tt.err.Error())
@@ -290,7 +290,7 @@ func TestJWK_AuthorizeSign(t *testing.T) {
 			ctx := NewContextWithMethod(context.Background(), SignMethod)
 			if got, err := tt.prov.AuthorizeSign(ctx, tt.args.token); err != nil {
 				if assert.NotNil(t, tt.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tt.code)
 					assert.HasPrefix(t, err.Error(), tt.err.Error())
@@ -366,7 +366,7 @@ func TestJWK_AuthorizeRenew(t *testing.T) {
 			if err := tt.prov.AuthorizeRenew(context.Background(), tt.args.cert); (err != nil) != tt.wantErr {
 				t.Errorf("JWK.AuthorizeRenew() error = %v, wantErr %v", err, tt.wantErr)
 			} else if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			}
@@ -461,7 +461,7 @@ func TestJWK_AuthorizeSSHSign(t *testing.T) {
 				return
 			}
 			if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 				assert.Nil(t, got)
@@ -626,7 +626,7 @@ func TestJWK_AuthorizeSSHRevoke(t *testing.T) {
 			tc := tt(t)
 			if err := tc.p.AuthorizeSSHRevoke(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())

authority/provisioner/k8sSA.go

@@ -93,7 +93,6 @@ func (p *K8sSA) GetEncryptedKey() (string, string, bool) {
 
 // Init initializes and validates the fields of a K8sSA type.
 func (p *K8sSA) Init(config Config) (err error) {
-
 	switch {
 	case p.Type == "":
 		return errors.New("provisioner type cannot be empty")

authority/provisioner/k8sSA_test.go

@@ -118,7 +118,7 @@ func TestK8sSA_authorizeToken(t *testing.T) {
 			tc := tt(t)
 			if claims, err := tc.p.authorizeToken(tc.token, testAudiences.Sign); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -167,7 +167,7 @@ func TestK8sSA_AuthorizeRevoke(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			tc := tt(t)
 			if err := tc.p.AuthorizeRevoke(context.Background(), tc.token); err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tc.code)
 				if assert.NotNil(t, tc.err) {
@@ -223,7 +223,7 @@ func TestK8sSA_AuthorizeRenew(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			tc := tt(t)
 			if err := tc.p.AuthorizeRenew(context.Background(), tc.cert); err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tc.code)
 				if assert.NotNil(t, tc.err) {
@@ -272,7 +272,7 @@ func TestK8sSA_AuthorizeSign(t *testing.T) {
 			tc := tt(t)
 			if opts, err := tc.p.AuthorizeSign(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -360,7 +360,7 @@ func TestK8sSA_AuthorizeSSHSign(t *testing.T) {
 			tc := tt(t)
 			if opts, err := tc.p.AuthorizeSSHSign(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())

authority/provisioner/noop.go

@@ -54,6 +54,7 @@ func (p *noop) AuthorizeSSHSign(ctx context.Context, token string) ([]SignOption
 }
 
 func (p *noop) AuthorizeSSHRenew(ctx context.Context, token string) (*ssh.Certificate, error) {
+	//nolint:nilnil // fine for noop
 	return nil, nil
 }
 

authority/provisioner/oidc_test.go

@@ -247,7 +247,7 @@ func TestOIDC_authorizeToken(t *testing.T) {
 				return
 			}
 			if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 				assert.Nil(t, got)
@@ -318,7 +318,7 @@ func TestOIDC_AuthorizeSign(t *testing.T) {
 				return
 			}
 			if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 				assert.Nil(t, got)
@@ -406,7 +406,7 @@ func TestOIDC_AuthorizeRevoke(t *testing.T) {
 				t.Errorf("OIDC.Authorize() error = %v, wantErr %v", err, tt.wantErr)
 				return
 			} else if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			}
@@ -452,7 +452,7 @@ func TestOIDC_AuthorizeRenew(t *testing.T) {
 			if (err != nil) != tt.wantErr {
 				t.Errorf("OIDC.AuthorizeRenew() error = %v, wantErr %v", err, tt.wantErr)
 			} else if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			}
@@ -614,7 +614,7 @@ func TestOIDC_AuthorizeSSHSign(t *testing.T) {
 				return
 			}
 			if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 				assert.Nil(t, got)
@@ -682,7 +682,7 @@ func TestOIDC_AuthorizeSSHRevoke(t *testing.T) {
 			if (err != nil) != tt.wantErr {
 				t.Errorf("OIDC.AuthorizeSSHRevoke() error = %v, wantErr %v", err, tt.wantErr)
 			} else if err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.code)
 			}

authority/provisioner/policy.go

@@ -9,8 +9,8 @@ type policyEngine struct {
 }
 
 func newPolicyEngine(options *Options) (*policyEngine, error) {
-
 	if options == nil {
+		//nolint:nilnil // legacy
 		return nil, nil
 	}
 

authority/provisioner/provisioner_test.go

@@ -241,7 +241,7 @@ func TestUnimplementedMethods(t *testing.T) {
 			default:
 				t.Errorf("unexpected method %s", tt.method)
 			}
-			sc, ok := err.(render.StatusCodedError)
+			sc, ok := render.AsStatusCodedError(err)
 			assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 			assert.Equals(t, sc.StatusCode(), http.StatusUnauthorized)
 			assert.Equals(t, err.Error(), msg)

authority/provisioner/sign_options.go

@@ -310,7 +310,6 @@ func (v profileDefaultDuration) Modify(cert *x509.Certificate, so SignOptions) e
 	if notBefore.IsZero() {
 		notBefore = now()
 		backdate = -1 * so.Backdate
-
 	}
 	notAfter := so.NotAfter.RelativeTime(notBefore)
 	if notAfter.IsZero() {

authority/provisioner/sign_ssh_options_test.go

@@ -287,7 +287,7 @@ func Test_sshCertTypeModifier_Modify(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			tc := run()
 			if assert.Nil(t, tc.modifier.Modify(tc.cert, SignSSHOptions{})) {
-				assert.Equals(t, tc.cert.CertType, uint32(tc.expected))
+				assert.Equals(t, tc.cert.CertType, tc.expected)
 			}
 		})
 	}

authority/provisioner/ssh_test.go

@@ -2,6 +2,7 @@ package provisioner
 
 import (
 	"crypto"
+	"errors"
 	"fmt"
 	"net/http"
 	"reflect"
@@ -84,9 +85,10 @@ func signSSHCertificate(key crypto.PublicKey, opts SignSSHOptions, signOpts []Si
 	// Create certificate from template.
 	certificate, err := sshutil.NewCertificate(cr, certOptions...)
 	if err != nil {
-		if _, ok := err.(*sshutil.TemplateError); ok {
+		var templErr *sshutil.TemplateError
-			return nil, errs.NewErr(http.StatusBadRequest, err,
+		if errors.As(err, &templErr) {
-				errs.WithMessage(err.Error()),
+			return nil, errs.NewErr(http.StatusBadRequest, templErr,
+				errs.WithMessage(templErr.Error()),
 				errs.WithKeyVal("signOptions", signOpts),
 			)
 		}

authority/provisioner/sshpop_test.go

@@ -218,7 +218,7 @@ func TestSSHPOP_authorizeToken(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			tc := tt(t)
 			if claims, err := tc.p.authorizeToken(tc.token, testAudiences.Sign, true); err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tc.code)
 				if assert.NotNil(t, tc.err) {
@@ -289,7 +289,7 @@ func TestSSHPOP_AuthorizeSSHRevoke(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			tc := tt(t)
 			if err := tc.p.AuthorizeSSHRevoke(context.Background(), tc.token); err != nil {
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tc.code)
 				if assert.NotNil(t, tc.err) {
@@ -370,7 +370,7 @@ func TestSSHPOP_AuthorizeSSHRenew(t *testing.T) {
 			tc := tt(t)
 			if cert, err := tc.p.AuthorizeSSHRenew(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -452,7 +452,7 @@ func TestSSHPOP_AuthorizeSSHRekey(t *testing.T) {
 			tc := tt(t)
 			if cert, opts, err := tc.p.AuthorizeSSHRekey(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())

authority/provisioner/utils_test.go

@@ -100,7 +100,7 @@ func generateJSONWebKey() (*jose.JSONWebKey, error) {
 	if err != nil {
 		return nil, err
 	}
-	jwk.KeyID = string(hex.EncodeToString(fp))
+	jwk.KeyID = hex.EncodeToString(fp)
 	return jwk, nil
 }
 

authority/provisioner/x5c_test.go

@@ -389,7 +389,7 @@ lgsqsR63is+0YQ==
 			tc := tt(t)
 			if claims, err := tc.p.authorizeToken(tc.token, testAudiences.Sign); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -460,7 +460,7 @@ func TestX5C_AuthorizeSign(t *testing.T) {
 			tc := tt(t)
 			if opts, err := tc.p.AuthorizeSign(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCoder interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -545,7 +545,7 @@ func TestX5C_AuthorizeRevoke(t *testing.T) {
 			tc := tt(t)
 			if err := tc.p.AuthorizeRevoke(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -595,7 +595,7 @@ func TestX5C_AuthorizeRenew(t *testing.T) {
 				NotAfter:  now.Add(time.Hour),
 			}); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -756,7 +756,7 @@ func TestX5C_AuthorizeSSHSign(t *testing.T) {
 			tc := tt(t)
 			if opts, err := tc.p.AuthorizeSSHSign(context.Background(), tc.token); err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCoder interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())

authority/provisioners.go

@@ -145,7 +145,6 @@ func (a *Authority) generateProvisionerConfig(ctx context.Context) (provisioner.
 		AuthorizeRenewFunc:    a.authorizeRenewFunc,
 		AuthorizeSSHRenewFunc: a.authorizeSSHRenewFunc,
 	}, nil
-
 }
 
 // StoreProvisioner stores a provisioner to the authority.
@@ -530,6 +529,7 @@ func durationsToLinkedca(d *provisioner.Duration) string {
 // certifictes claims type.
 func claimsToCertificates(c *linkedca.Claims) (*provisioner.Claims, error) {
 	if c == nil {
+		//nolint:nilnil // legacy
 		return nil, nil
 	}
 

authority/provisioners_test.go

@@ -57,7 +57,7 @@ func TestGetEncryptedKey(t *testing.T) {
 			ek, err := tc.a.GetEncryptedKey(tc.kid)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -107,7 +107,7 @@ func TestGetProvisioners(t *testing.T) {
 			ps, next, err := tc.a.GetProvisioners("", 0)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())

authority/root_test.go

@@ -32,7 +32,7 @@ func TestRoot(t *testing.T) {
 			crt, err := a.Root(tc.sum)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCoder interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())

authority/ssh.go

@@ -140,6 +140,7 @@ func (a *Authority) GetSSHBastion(ctx context.Context, user, hostname string) (*
 				return a.config.SSH.Bastion, nil
 			}
 		}
+		//nolint:nilnil // legacy
 		return nil, nil
 	}
 	return nil, errs.NotFound("authority.GetSSHBastion; ssh is not configured")
@@ -202,9 +203,10 @@ func (a *Authority) SignSSH(ctx context.Context, key ssh.PublicKey, opts provisi
 	// Create certificate from template.
 	certificate, err := sshutil.NewCertificate(cr, certOptions...)
 	if err != nil {
-		if _, ok := err.(*sshutil.TemplateError); ok {
+		var templErr *sshutil.TemplateError
+		if errors.As(err, &templErr) {
 			return nil, errs.ApplyOptions(
-				errs.BadRequestErr(err, err.Error()),
+				errs.BadRequestErr(templErr, templErr.Error()),
 				errs.WithKeyVal("signOptions", signOpts),
 			)
 		}
@@ -281,7 +283,7 @@ func (a *Authority) SignSSH(ctx context.Context, key ssh.PublicKey, opts provisi
 		}
 	}
 
-	if err = a.storeSSHCertificate(prov, cert); err != nil && err != db.ErrNotImplemented {
+	if err = a.storeSSHCertificate(prov, cert); err != nil && !errors.Is(err, db.ErrNotImplemented) {
 		return nil, errs.Wrap(http.StatusInternalServerError, err, "authority.SignSSH: error storing certificate in db")
 	}
 
@@ -351,7 +353,7 @@ func (a *Authority) RenewSSH(ctx context.Context, oldCert *ssh.Certificate) (*ss
 		return nil, errs.Wrap(http.StatusInternalServerError, err, "signSSH: error signing certificate")
 	}
 
-	if err = a.storeRenewedSSHCertificate(prov, oldCert, cert); err != nil && err != db.ErrNotImplemented {
+	if err = a.storeRenewedSSHCertificate(prov, oldCert, cert); err != nil && !errors.Is(err, db.ErrNotImplemented) {
 		return nil, errs.Wrap(http.StatusInternalServerError, err, "renewSSH: error storing certificate in db")
 	}
 
@@ -434,7 +436,7 @@ func (a *Authority) RekeySSH(ctx context.Context, oldCert *ssh.Certificate, pub
 		}
 	}
 
-	if err = a.storeRenewedSSHCertificate(prov, oldCert, cert); err != nil && err != db.ErrNotImplemented {
+	if err = a.storeRenewedSSHCertificate(prov, oldCert, cert); err != nil && !errors.Is(err, db.ErrNotImplemented) {
 		return nil, errs.Wrap(http.StatusInternalServerError, err, "rekeySSH; error storing certificate in db")
 	}
 
@@ -570,7 +572,7 @@ func (a *Authority) SignSSHAddUser(ctx context.Context, key ssh.PublicKey, subje
 	}
 	cert.Signature = sig
 
-	if err = a.storeRenewedSSHCertificate(prov, subject, cert); err != nil && err != db.ErrNotImplemented {
+	if err = a.storeRenewedSSHCertificate(prov, subject, cert); err != nil && !errors.Is(err, db.ErrNotImplemented) {
 		return nil, errs.Wrap(http.StatusInternalServerError, err, "signSSHAddUser: error storing certificate in db")
 	}
 
@@ -589,7 +591,7 @@ func (a *Authority) CheckSSHHost(ctx context.Context, principal, token string) (
 	}
 	exists, err := a.db.IsSSHHost(principal)
 	if err != nil {
-		if err == db.ErrNotImplemented {
+		if errors.Is(err, db.ErrNotImplemented) {
 			return false, errs.Wrap(http.StatusNotImplemented, err,
 				"checkSSHHost: isSSHHost is not implemented")
 		}

authority/ssh_test.go

@@ -760,7 +760,7 @@ func TestAuthority_GetSSHBastion(t *testing.T) {
 				t.Errorf("Authority.GetSSHBastion() error = %v, wantErr %v", err, tt.wantErr)
 				return
 			} else if err != nil {
-				_, ok := err.(render.StatusCodedError)
+				_, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 			}
 			if !reflect.DeepEqual(got, tt.want) {
@@ -850,7 +850,7 @@ func TestAuthority_GetSSHHosts(t *testing.T) {
 			hosts, err := auth.GetSSHHosts(context.Background(), tc.cert)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
@@ -1077,7 +1077,7 @@ func TestAuthority_RekeySSH(t *testing.T) {
 			cert, err := auth.RekeySSH(context.Background(), tc.cert, tc.key, tc.signOpts...)
 			if err != nil {
 				if assert.NotNil(t, tc.err) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())

authority/tls.go

@@ -142,7 +142,8 @@ func (a *Authority) Sign(csr *x509.CertificateRequest, signOpts provisioner.Sign
 
 	cert, err := x509util.NewCertificate(csr, certOptions...)
 	if err != nil {
-		if _, ok := err.(*x509util.TemplateError); ok {
+		var te *x509util.TemplateError
+		if errors.As(err, &te) {
 			return nil, errs.ApplyOptions(
 				errs.BadRequestErr(err, err.Error()),
 				errs.WithKeyVal("csr", csr),
@@ -244,7 +245,7 @@ func (a *Authority) Sign(csr *x509.CertificateRequest, signOpts provisioner.Sign
 
 	fullchain := append([]*x509.Certificate{resp.Certificate}, resp.CertificateChain...)
 	if err = a.storeCertificate(prov, fullchain); err != nil {
-		if err != db.ErrNotImplemented {
+		if !errors.Is(err, db.ErrNotImplemented) {
 			return nil, errs.Wrap(http.StatusInternalServerError, err,
 				"authority.Sign; error storing certificate in db", opts...)
 		}
@@ -362,7 +363,7 @@ func (a *Authority) Rekey(oldCert *x509.Certificate, pk crypto.PublicKey) ([]*x5
 
 	fullchain := append([]*x509.Certificate{resp.Certificate}, resp.CertificateChain...)
 	if err = a.storeRenewedCertificate(oldCert, fullchain); err != nil {
-		if err != db.ErrNotImplemented {
+		if !errors.Is(err, db.ErrNotImplemented) {
 			return nil, errs.Wrap(http.StatusInternalServerError, err, "authority.Rekey; error storing certificate in db", opts...)
 		}
 	}
@@ -542,12 +543,12 @@ func (a *Authority) Revoke(ctx context.Context, revokeOpts *RevokeOptions) error
 		// Save as revoked in the Db.
 		err = a.revoke(revokedCert, rci)
 	}
-	switch err {
+	switch {
-	case nil:
+	case err == nil:
 		return nil
-	case db.ErrNotImplemented:
+	case errors.Is(err, db.ErrNotImplemented):
 		return errs.NotImplemented("authority.Revoke; no persistence layer configured", opts...)
-	case db.ErrAlreadyExists:
+	case errors.Is(err, db.ErrAlreadyExists):
 		return errs.ApplyOptions(
 			errs.BadRequest("certificate with serial number '%s' is already revoked", rci.Serial),
 			opts...,
@@ -667,7 +668,7 @@ func templatingError(err error) error {
 	)
 	if errors.As(err, &syntaxError) {
 		// offset is arguably not super clear to the user, but it's the best we can do here
-		cause = fmt.Errorf("%s at offset %d", cause.Error(), syntaxError.Offset)
+		cause = fmt.Errorf("%w at offset %d", cause, syntaxError.Offset)
 	} else if errors.As(err, &typeError) {
 		// slightly rewriting the default error message to include the offset
 		cause = fmt.Errorf("cannot unmarshal %s at offset %d into Go value of type %s", typeError.Value, typeError.Offset, typeError.Type)

authority/tls_test.go

@@ -730,13 +730,13 @@ ZYtQ9Ot36qc=
 			if err != nil {
 				if assert.NotNil(t, tc.err, fmt.Sprintf("unexpected error: %s", err)) {
 					assert.Nil(t, certChain)
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
 
-					ctxErr, ok := err.(*errs.Error)
+					var ctxErr *errs.Error
-					assert.Fatal(t, ok, "error is not of type *errs.Error")
+					assert.Fatal(t, errors.As(err, &ctxErr), "error is not of type *errs.Error")
 					assert.Equals(t, ctxErr.Details["csr"], tc.csr)
 					assert.Equals(t, ctxErr.Details["signOptions"], tc.signOpts)
 				}
@@ -929,13 +929,13 @@ func TestAuthority_Renew(t *testing.T) {
 			if err != nil {
 				if assert.NotNil(t, tc.err, fmt.Sprintf("unexpected error: %s", err)) {
 					assert.Nil(t, certChain)
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
 
-					ctxErr, ok := err.(*errs.Error)
+					var ctxErr *errs.Error
-					assert.Fatal(t, ok, "error is not of type *errs.Error")
+					assert.Fatal(t, errors.As(err, &ctxErr), "error is not of type *errs.Error")
 					assert.Equals(t, ctxErr.Details["serialNumber"], tc.cert.SerialNumber.String())
 				}
 			} else {
@@ -1136,13 +1136,13 @@ func TestAuthority_Rekey(t *testing.T) {
 			if err != nil {
 				if assert.NotNil(t, tc.err, fmt.Sprintf("unexpected error: %s", err)) {
 					assert.Nil(t, certChain)
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
 
-					ctxErr, ok := err.(*errs.Error)
+					var ctxErr *errs.Error
-					assert.Fatal(t, ok, "error is not of type *errs.Error")
+					assert.Fatal(t, errors.As(err, &ctxErr), "error is not of type *errs.Error")
 					assert.Equals(t, ctxErr.Details["serialNumber"], tc.cert.SerialNumber.String())
 				}
 			} else {
@@ -1566,13 +1566,13 @@ func TestAuthority_Revoke(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			if err := tc.auth.Revoke(tc.ctx, tc.opts); err != nil {
 				if assert.NotNil(t, tc.err, fmt.Sprintf("unexpected error: %s", err)) {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tc.code)
 					assert.HasPrefix(t, err.Error(), tc.err.Error())
 
-					ctxErr, ok := err.(*errs.Error)
+					var ctxErr *errs.Error
-					assert.Fatal(t, ok, "error is not of type *errs.Error")
+					assert.Fatal(t, errors.As(err, &ctxErr), "error is not of type *errs.Error")
 					assert.Equals(t, ctxErr.Details["serialNumber"], tc.opts.Serial)
 					assert.Equals(t, ctxErr.Details["reasonCode"], tc.opts.ReasonCode)
 					assert.Equals(t, ctxErr.Details["reason"], tc.opts.Reason)

ca/acmeClient.go

@@ -52,6 +52,7 @@ func NewACMEClient(endpoint string, contact []string, opts ...ClientOption) (*AC
 	if err != nil {
 		return nil, errors.Wrapf(err, "client GET %s failed", endpoint)
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return nil, readACMEError(resp.Body)
 	}
@@ -80,6 +81,7 @@ func NewACMEClient(endpoint string, contact []string, opts ...ClientOption) (*AC
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return nil, readACMEError(resp.Body)
 	}
@@ -111,6 +113,7 @@ func (c *ACMEClient) GetNonce() (string, error) {
 	if err != nil {
 		return "", errors.Wrapf(err, "client GET %s failed", c.dir.NewNonce)
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return "", readACMEError(resp.Body)
 	}
@@ -198,6 +201,7 @@ func (c *ACMEClient) NewOrder(payload []byte) (*acme.Order, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return nil, readACMEError(resp.Body)
 	}
@@ -218,6 +222,7 @@ func (c *ACMEClient) GetChallenge(url string) (*acme.Challenge, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return nil, readACMEError(resp.Body)
 	}
@@ -237,6 +242,7 @@ func (c *ACMEClient) ValidateChallenge(url string) error {
 	if err != nil {
 		return err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return readACMEError(resp.Body)
 	}
@@ -262,6 +268,7 @@ func (c *ACMEClient) GetAuthz(url string) (*acme.Authorization, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return nil, readACMEError(resp.Body)
 	}
@@ -279,6 +286,7 @@ func (c *ACMEClient) GetOrder(url string) (*acme.Order, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return nil, readACMEError(resp.Body)
 	}
@@ -302,6 +310,7 @@ func (c *ACMEClient) FinalizeOrder(url string, csr *x509.CertificateRequest) err
 	if err != nil {
 		return err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return readACMEError(resp.Body)
 	}
@@ -314,6 +323,7 @@ func (c *ACMEClient) GetCertificate(url string) (*x509.Certificate, []*x509.Cert
 	if err != nil {
 		return nil, nil, err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return nil, nil, readACMEError(resp.Body)
 	}
@@ -350,6 +360,7 @@ func (c *ACMEClient) GetAccountOrders() ([]string, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 	if resp.StatusCode >= 400 {
 		return nil, readACMEError(resp.Body)
 	}

ca/adminClient.go

@@ -116,7 +116,6 @@ func (c *AdminClient) generateAdminToken(aud *url.URL) (string, error) {
 	}
 
 	return tok.SignedString(c.x5cJWK.Algorithm, c.x5cJWK.Key)
-
 }
 
 func (c *AdminClient) retryOnError(r *http.Response) bool {

ca/bootstrap_test.go

@@ -246,6 +246,7 @@ func TestBootstrapServerWithoutMTLS(t *testing.T) {
 				expected := &http.Server{
 					TLSConfig: got.TLSConfig,
 				}
+				//nolint:govet // not comparing errors
 				if !reflect.DeepEqual(got, expected) {
 					t.Errorf("BootstrapServer() = %v, want %v", got, expected)
 				}
@@ -303,6 +304,7 @@ func TestBootstrapServerWithMTLS(t *testing.T) {
 				expected := &http.Server{
 					TLSConfig: got.TLSConfig,
 				}
+				//nolint:govet // not comparing errors
 				if !reflect.DeepEqual(got, expected) {
 					t.Errorf("BootstrapServer() = %v, want %v", got, expected)
 				}

ca/ca.go

@@ -529,9 +529,9 @@ func (ca *CA) shouldServeSCEPEndpoints() bool {
 	return ca.auth.GetSCEPService() != nil
 }
 
-// nolint // ignore linters to allow keeping this function around for debugging
+//nolint:unused,deadcode // useful for debugging
 func dumpRoutes(mux chi.Routes) {
-	// helpful routine for logging all routes //
+	// helpful routine for logging all routes
 	walkFunc := func(method string, route string, handler http.Handler, middlewares ...func(http.Handler) http.Handler) error {
 		fmt.Printf("%s %s\n", method, route)
 		return nil

ca/client.go

@@ -120,9 +120,7 @@ type clientOptions struct {
 }
 
 func (o *clientOptions) apply(opts []ClientOption) (err error) {
-	if err = o.applyDefaultIdentity(); err != nil {
+	o.applyDefaultIdentity()
-		return
-	}
 	for _, fn := range opts {
 		if err = fn(o); err != nil {
 			return
@@ -133,26 +131,25 @@ func (o *clientOptions) apply(opts []ClientOption) (err error) {
 
 // applyDefaultIdentity sets the options for the default identity if the
 // identity file is present. The identity is enabled by default.
-func (o *clientOptions) applyDefaultIdentity() error {
+func (o *clientOptions) applyDefaultIdentity() {
 	if DisableIdentity {
-		return nil
+		return
 	}
 
 	// Do not load an identity if something fails
 	i, err := identity.LoadDefaultIdentity()
 	if err != nil {
-		return nil
+		return
 	}
 	if err := i.Validate(); err != nil {
-		return nil
+		return
 	}
 	crt, err := i.TLSCertificate()
 	if err != nil {
-		return nil
+		return
 	}
 	o.certificate = crt
 	o.getClientCertificate = i.GetClientCertificateFunc()
-	return nil
 }
 
 // checkTransport checks if other ways to set up a transport have been provided.
@@ -241,13 +238,13 @@ func WithTransport(tr http.RoundTripper) ClientOption {
 }
 
 // WithInsecure adds a insecure transport that bypasses TLS verification.
-// nolint:gosec // insecure option
 func WithInsecure() ClientOption {
 	return func(o *clientOptions) error {
 		o.transport = &http.Transport{
 			Proxy: http.ProxyFromEnvironment,
 			TLSClientConfig: &tls.Config{
 				MinVersion: tls.VersionTLS12,
+				//nolint:gosec // insecure option
 				InsecureSkipVerify: true,
 			},
 		}
@@ -1138,8 +1135,7 @@ retry:
 	}
 	var check api.SSHCheckPrincipalResponse
 	if err := readJSON(resp.Body, &check); err != nil {
-		return nil, errs.Wrapf(http.StatusInternalServerError, err, "error reading %s response",
+		return nil, errs.Wrapf(http.StatusInternalServerError, err, "error reading %s response", u)
-			[]interface{}{u, errs.WithMessage("Failed to parse response from /ssh/check-host endpoint")})
 	}
 	return &check, nil
 }
@@ -1203,6 +1199,7 @@ func (c *Client) RootFingerprint() (string, error) {
 	if err != nil {
 		return "", errors.Wrapf(err, "client GET %s failed", u)
 	}
+	defer resp.Body.Close()
 	if resp.TLS == nil || len(resp.TLS.VerifiedChains) == 0 {
 		return "", errors.New("missing verified chains")
 	}

ca/client_test.go

@@ -519,7 +519,7 @@ func TestClient_Renew(t *testing.T) {
 					t.Errorf("Client.Renew() = %v, want nil", got)
 				}
 
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.responseCode)
 				assert.HasPrefix(t, err.Error(), tt.err.Error())
@@ -587,7 +587,7 @@ func TestClient_RenewWithToken(t *testing.T) {
 					t.Errorf("Client.RenewWithToken() = %v, want nil", got)
 				}
 
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.responseCode)
 				assert.HasPrefix(t, err.Error(), tt.err.Error())
@@ -656,7 +656,7 @@ func TestClient_Rekey(t *testing.T) {
 					t.Errorf("Client.Renew() = %v, want nil", got)
 				}
 
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.responseCode)
 				assert.HasPrefix(t, err.Error(), tt.err.Error())
@@ -777,7 +777,7 @@ func TestClient_ProvisionerKey(t *testing.T) {
 					t.Errorf("Client.ProvisionerKey() = %v, want nil", got)
 				}
 
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.responseCode)
 				assert.HasPrefix(t, tt.err.Error(), err.Error())
@@ -836,7 +836,7 @@ func TestClient_Roots(t *testing.T) {
 				if got != nil {
 					t.Errorf("Client.Roots() = %v, want nil", got)
 				}
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.responseCode)
 				assert.HasPrefix(t, err.Error(), tt.err.Error())
@@ -894,7 +894,7 @@ func TestClient_Federation(t *testing.T) {
 				if got != nil {
 					t.Errorf("Client.Federation() = %v, want nil", got)
 				}
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.responseCode)
 				assert.HasPrefix(t, tt.err.Error(), err.Error())
@@ -956,7 +956,7 @@ func TestClient_SSHRoots(t *testing.T) {
 				if got != nil {
 					t.Errorf("Client.SSHKeys() = %v, want nil", got)
 				}
-				sc, ok := err.(render.StatusCodedError)
+				sc, ok := render.AsStatusCodedError(err)
 				assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 				assert.Equals(t, sc.StatusCode(), tt.responseCode)
 				assert.HasPrefix(t, tt.err.Error(), err.Error())
@@ -1118,7 +1118,7 @@ func TestClient_SSHBastion(t *testing.T) {
 					t.Errorf("Client.SSHBastion() = %v, want nil", got)
 				}
 				if tt.responseCode != 200 {
-					sc, ok := err.(render.StatusCodedError)
+					sc, ok := render.AsStatusCodedError(err)
 					assert.Fatal(t, ok, "error does not implement StatusCodedError interface")
 					assert.Equals(t, sc.StatusCode(), tt.responseCode)
 					assert.HasPrefix(t, err.Error(), tt.err.Error())

ca/identity/client.go

@@ -82,7 +82,6 @@ func LoadClient() (*Client, error) {
 			Transport: tr,
 		},
 	}, nil
-
 }
 
 type defaultsConfig struct {

ca/identity/identity.go

@@ -261,6 +261,7 @@ func (i *Identity) GetClientCertificateFunc() func(*tls.CertificateRequestInfo)
 // GetCertPool returns a x509.CertPool if the identity defines a custom root.
 func (i *Identity) GetCertPool() (*x509.CertPool, error) {
 	if i.Root == "" {
+		//nolint:nilnil // legacy
 		return nil, nil
 	}
 	b, err := os.ReadFile(i.Root)

ca/provisioner.go

@@ -182,19 +182,17 @@ func loadProvisionerJWKByKid(client *Client, kid string, password []byte) (*jose
 // loadProvisionerJWKByName retrieves the list of provisioners and encrypted key then
 // returns the key of the first provisioner with a matching name that can be successfully
 // decrypted with the specified password.
-func loadProvisionerJWKByName(client *Client, name string, password []byte) (key *jose.JSONWebKey, err error) {
+func loadProvisionerJWKByName(client *Client, name string, password []byte) (*jose.JSONWebKey, error) {
 	provisioners, err := getProvisioners(client)
 	if err != nil {
-		err = errors.Wrap(err, "error getting the provisioners")
+		return nil, errors.Wrap(err, "error getting the provisioners")
-		return
 	}
 
 	for _, provisioner := range provisioners {
 		if provisioner.GetName() == name {
 			if _, encryptedKey, ok := provisioner.GetEncryptedKey(); ok {
-				key, err = decryptProvisionerJWK(encryptedKey, password)
+				if key, err := decryptProvisionerJWK(encryptedKey, password); err == nil {
-				if err == nil {
+					return key, nil
-					return
 				}
 			}
 		}

ca/tls.go

@@ -105,8 +105,8 @@ func (c *Client) getClientTLSConfig(ctx context.Context, sign *api.SignResponse,
 	}
 
 	tr := getDefaultTransport(tlsConfig)
-	// Use mutable tls.Config on renew
+	//nolint:staticcheck // Use mutable tls.Config on renew
-	tr.DialTLS = c.buildDialTLS(tlsCtx) // nolint:staticcheck,gocritic
+	tr.DialTLS = c.buildDialTLS(tlsCtx)
 	// tr.DialTLSContext = c.buildDialTLSContext(tlsCtx)
 	renewer.RenewCertificate = getRenewFunc(tlsCtx, c, tr, pk)
 
@@ -153,8 +153,8 @@ func (c *Client) GetServerTLSConfig(ctx context.Context, sign *api.SignResponse,
 
 	// Update renew function with transport
 	tr := getDefaultTransport(tlsConfig)
-	// Use mutable tls.Config on renew
+	//nolint:staticcheck // Use mutable tls.Config on renew
-	tr.DialTLS = c.buildDialTLS(tlsCtx) // nolint:staticcheck,gocritic
+	tr.DialTLS = c.buildDialTLS(tlsCtx)
 	// tr.DialTLSContext = c.buildDialTLSContext(tlsCtx)
 	renewer.RenewCertificate = getRenewFunc(tlsCtx, c, tr, pk)
 
@@ -194,8 +194,7 @@ func (c *Client) buildDialTLS(ctx *TLSOptionCtx) func(network, addr string) (net
 	}
 }
 
-// buildDialTLSContext returns an implementation of DialTLSContext callback in http.Transport.
+//nolint:unused // buildDialTLSContext returns an implementation of DialTLSContext callback in http.Transport.
-// nolint:unused,gocritic
 func (c *Client) buildDialTLSContext(tlsCtx *TLSOptionCtx) func(ctx context.Context, network, addr string) (net.Conn, error) {
 	return func(ctx context.Context, network, addr string) (net.Conn, error) {
 		d := getDefaultDialer()
@@ -253,8 +252,7 @@ func TLSCertificate(sign *api.SignResponse, pk crypto.PrivateKey) (*tls.Certific
 		return nil, err
 	}
 
-	// nolint:gocritic
+	//nolint:gocritic // using a new variable for clarity
-	// using a new variable for clarity
 	chain := append(certPEM, caPEM...)
 	cert, err := tls.X509KeyPair(chain, keyPEM)
 	if err != nil {

cas/apiv1/services.go

@@ -59,9 +59,9 @@ func (t Type) String() string {
 	return strings.ToLower(string(t))
 }
 
-// ErrNotImplemented is the type of error returned if an operation is not
+// ErrNotImplemented is the type of error returned if an operation is not implemented.
-// implemented.
+type ErrNotImplemented struct { //nolint:errname // ignore error name warning
-type ErrNotImplemented struct {
+
 	Message string
 }
 

cas/cloudcas/cloudcas_test.go

@@ -104,7 +104,7 @@ MHcCAQEEIN51Rgg6YcQVLeCRzumdw4pjM3VWqFIdCbnsV3Up1e/goAoGCCqGSM49
 AwEHoUQDQgAEjJIcDhvvxi7gu4aFkiW/8+E3BfPhmhXU5RlDQusre+MHXc7XYMtk
 Lm6PXPeTF1DNdS21Ju1G/j1yUykGJOmxkg==
 -----END EC PRIVATE KEY-----`
-	// nolint:unused,deadcode,gocritic
+	//nolint:unused,deadcode,gocritic,varcheck
 	testIntermediateKey = `-----BEGIN EC PRIVATE KEY-----
 MHcCAQEEIMMX/XkXGnRDD4fYu7Z4rHACdJn/iyOy2UTwsv+oZ0C+oAoGCCqGSM49
 AwEHoUQDQgAE8u6rGAFj5CZpdzzMogLwUyCMnp0X9wtv4OKDRcpzkYf9PU5GuGA6
@@ -399,7 +399,7 @@ func TestNew_real(t *testing.T) {
 	if v, ok := os.LookupEnv("GOOGLE_APPLICATION_CREDENTIALS"); ok {
 		os.Unsetenv("GOOGLE_APPLICATION_CREDENTIALS")
 		t.Cleanup(func() {
-			os.Setenv("GOOGLE_APPLICATION_CREDENTIALS", v)
+			t.Setenv("GOOGLE_APPLICATION_CREDENTIALS", v)
 		})
 	}
 
@@ -881,12 +881,12 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 	fake.LROClient = client
 
 	// Configure mocks
-	any := gomock.Any()
+	anee := gomock.Any()
 
 	// ok root
-	m.EXPECT().GetCaPool(any, any).Return(nil, status.Error(codes.NotFound, "not found"))
+	m.EXPECT().GetCaPool(anee, anee).Return(nil, status.Error(codes.NotFound, "not found"))
-	m.EXPECT().CreateCaPool(any, any).Return(fake.CreateCaPoolOperation("CreateCaPool"), nil)
+	m.EXPECT().CreateCaPool(anee, anee).Return(fake.CreateCaPoolOperation("CreateCaPool"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCaPool",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -895,8 +895,8 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -906,8 +906,8 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().EnableCertificateAuthority(any, any).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
+	m.EXPECT().EnableCertificateAuthority(anee, anee).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "EnableCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -919,9 +919,9 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 	}, nil)
 
 	// ok intermediate
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -930,15 +930,15 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(&pb.FetchCertificateAuthorityCsrResponse{
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(&pb.FetchCertificateAuthorityCsrResponse{
 		PemCsr: testIntermediateCsr,
 	}, nil)
-	m.EXPECT().CreateCertificate(any, any).Return(&pb.Certificate{
+	m.EXPECT().CreateCertificate(anee, anee).Return(&pb.Certificate{
 		PemCertificate:      testIntermediateCertificate,
 		PemCertificateChain: []string{testRootCertificate},
 	}, nil)
-	m.EXPECT().ActivateCertificateAuthority(any, any).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
+	m.EXPECT().ActivateCertificateAuthority(anee, anee).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "ActivateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -948,8 +948,8 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().EnableCertificateAuthority(any, any).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
+	m.EXPECT().EnableCertificateAuthority(anee, anee).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "EnableCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -961,9 +961,9 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 	}, nil)
 
 	// ok intermediate local signer
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -972,11 +972,11 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(&pb.FetchCertificateAuthorityCsrResponse{
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(&pb.FetchCertificateAuthorityCsrResponse{
 		PemCsr: testIntermediateCsr,
 	}, nil)
-	m.EXPECT().ActivateCertificateAuthority(any, any).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
+	m.EXPECT().ActivateCertificateAuthority(anee, anee).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "ActivateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -986,8 +986,8 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().EnableCertificateAuthority(any, any).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
+	m.EXPECT().EnableCertificateAuthority(anee, anee).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "EnableCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -999,9 +999,9 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 	}, nil)
 
 	// ok create key
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1011,8 +1011,8 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().EnableCertificateAuthority(any, any).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
+	m.EXPECT().EnableCertificateAuthority(anee, anee).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "EnableCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1024,30 +1024,30 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 	}, nil)
 
 	// fail GetCaPool
-	m.EXPECT().GetCaPool(any, any).Return(nil, errTest)
+	m.EXPECT().GetCaPool(anee, anee).Return(nil, errTest)
 
 	// fail CreateCaPool
-	m.EXPECT().GetCaPool(any, any).Return(nil, status.Error(codes.NotFound, "not found"))
+	m.EXPECT().GetCaPool(anee, anee).Return(nil, status.Error(codes.NotFound, "not found"))
-	m.EXPECT().CreateCaPool(any, any).Return(nil, errTest)
+	m.EXPECT().CreateCaPool(anee, anee).Return(nil, errTest)
 
 	// fail CreateCaPool.Wait
-	m.EXPECT().GetCaPool(any, any).Return(nil, status.Error(codes.NotFound, "not found"))
+	m.EXPECT().GetCaPool(anee, anee).Return(nil, status.Error(codes.NotFound, "not found"))
-	m.EXPECT().CreateCaPool(any, any).Return(fake.CreateCaPoolOperation("CreateCaPool"), nil)
+	m.EXPECT().CreateCaPool(anee, anee).Return(fake.CreateCaPoolOperation("CreateCaPool"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(nil, errTest)
+	mos.EXPECT().GetOperation(anee, anee).Return(nil, errTest)
 
 	// fail CreateCertificateAuthority
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(nil, errTest)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(nil, errTest)
 
 	// fail CreateCertificateAuthority.Wait
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(nil, errTest)
+	mos.EXPECT().GetOperation(anee, anee).Return(nil, errTest)
 
 	// fail EnableCertificateAuthority
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1057,12 +1057,12 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().EnableCertificateAuthority(any, any).Return(nil, errTest)
+	m.EXPECT().EnableCertificateAuthority(anee, anee).Return(nil, errTest)
 
 	// fail EnableCertificateAuthority.Wait
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1072,13 +1072,13 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().EnableCertificateAuthority(any, any).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
+	m.EXPECT().EnableCertificateAuthority(anee, anee).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(nil, errTest)
+	mos.EXPECT().GetOperation(anee, anee).Return(nil, errTest)
 
 	// fail EnableCertificateAuthority intermediate
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1087,15 +1087,15 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(&pb.FetchCertificateAuthorityCsrResponse{
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(&pb.FetchCertificateAuthorityCsrResponse{
 		PemCsr: testIntermediateCsr,
 	}, nil)
-	m.EXPECT().CreateCertificate(any, any).Return(&pb.Certificate{
+	m.EXPECT().CreateCertificate(anee, anee).Return(&pb.Certificate{
 		PemCertificate:      testIntermediateCertificate,
 		PemCertificateChain: []string{testRootCertificate},
 	}, nil)
-	m.EXPECT().ActivateCertificateAuthority(any, any).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
+	m.EXPECT().ActivateCertificateAuthority(anee, anee).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "ActivateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1105,12 +1105,12 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().EnableCertificateAuthority(any, any).Return(nil, errTest)
+	m.EXPECT().EnableCertificateAuthority(anee, anee).Return(nil, errTest)
 
 	// fail EnableCertificateAuthority.Wait intermediate
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1119,15 +1119,15 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(&pb.FetchCertificateAuthorityCsrResponse{
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(&pb.FetchCertificateAuthorityCsrResponse{
 		PemCsr: testIntermediateCsr,
 	}, nil)
-	m.EXPECT().CreateCertificate(any, any).Return(&pb.Certificate{
+	m.EXPECT().CreateCertificate(anee, anee).Return(&pb.Certificate{
 		PemCertificate:      testIntermediateCertificate,
 		PemCertificateChain: []string{testRootCertificate},
 	}, nil)
-	m.EXPECT().ActivateCertificateAuthority(any, any).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
+	m.EXPECT().ActivateCertificateAuthority(anee, anee).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "ActivateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1137,13 +1137,13 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().EnableCertificateAuthority(any, any).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
+	m.EXPECT().EnableCertificateAuthority(anee, anee).Return(fake.EnableCertificateAuthorityOperation("EnableCertificateAuthorityOperation"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(nil, errTest)
+	mos.EXPECT().GetOperation(anee, anee).Return(nil, errTest)
 
 	// fail FetchCertificateAuthorityCsr
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1152,12 +1152,12 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(nil, errTest)
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(nil, errTest)
 
 	// fail CreateCertificate
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1166,15 +1166,15 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(&pb.FetchCertificateAuthorityCsrResponse{
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(&pb.FetchCertificateAuthorityCsrResponse{
 		PemCsr: testIntermediateCsr,
 	}, nil)
-	m.EXPECT().CreateCertificate(any, any).Return(nil, errTest)
+	m.EXPECT().CreateCertificate(anee, anee).Return(nil, errTest)
 
 	// fail ActivateCertificateAuthority
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1183,19 +1183,19 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(&pb.FetchCertificateAuthorityCsrResponse{
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(&pb.FetchCertificateAuthorityCsrResponse{
 		PemCsr: testIntermediateCsr,
 	}, nil)
-	m.EXPECT().CreateCertificate(any, any).Return(&pb.Certificate{
+	m.EXPECT().CreateCertificate(anee, anee).Return(&pb.Certificate{
 		PemCertificate:      testIntermediateCertificate,
 		PemCertificateChain: []string{testRootCertificate},
 	}, nil)
-	m.EXPECT().ActivateCertificateAuthority(any, any).Return(nil, errTest)
+	m.EXPECT().ActivateCertificateAuthority(anee, anee).Return(nil, errTest)
 
 	// fail ActivateCertificateAuthority.Wait
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1204,20 +1204,20 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(&pb.FetchCertificateAuthorityCsrResponse{
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(&pb.FetchCertificateAuthorityCsrResponse{
 		PemCsr: testIntermediateCsr,
 	}, nil)
-	m.EXPECT().CreateCertificate(any, any).Return(&pb.Certificate{
+	m.EXPECT().CreateCertificate(anee, anee).Return(&pb.Certificate{
 		PemCertificate:      testIntermediateCertificate,
 		PemCertificateChain: []string{testRootCertificate},
 	}, nil)
-	m.EXPECT().ActivateCertificateAuthority(any, any).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
+	m.EXPECT().ActivateCertificateAuthority(anee, anee).Return(fake.ActivateCertificateAuthorityOperation("ActivateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(nil, errTest)
+	mos.EXPECT().GetOperation(anee, anee).Return(nil, errTest)
 
 	// fail x509util.CreateCertificate
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1226,14 +1226,14 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(&pb.FetchCertificateAuthorityCsrResponse{
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(&pb.FetchCertificateAuthorityCsrResponse{
 		PemCsr: testIntermediateCsr,
 	}, nil)
 
 	// fail parseCertificateRequest
-	m.EXPECT().GetCaPool(any, any).Return(&pb.CaPool{Name: testCaPoolName}, nil)
+	m.EXPECT().GetCaPool(anee, anee).Return(&pb.CaPool{Name: testCaPoolName}, nil)
-	m.EXPECT().CreateCertificateAuthority(any, any).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
+	m.EXPECT().CreateCertificateAuthority(anee, anee).Return(fake.CreateCertificateAuthorityOperation("CreateCertificateAuthority"), nil)
-	mos.EXPECT().GetOperation(any, any).Return(&longrunningpb.Operation{
+	mos.EXPECT().GetOperation(anee, anee).Return(&longrunningpb.Operation{
 		Name: "CreateCertificateAuthority",
 		Done: true,
 		Result: &longrunningpb.Operation_Response{
@@ -1242,7 +1242,7 @@ func TestCloudCAS_CreateCertificateAuthority(t *testing.T) {
 			})).(*anypb.Any),
 		},
 	}, nil)
-	m.EXPECT().FetchCertificateAuthorityCsr(any, any).Return(&pb.FetchCertificateAuthorityCsrResponse{
+	m.EXPECT().FetchCertificateAuthorityCsr(anee, anee).Return(&pb.FetchCertificateAuthorityCsrResponse{
 		PemCsr: "Not a CSR",
 	}, nil)
 

cas/softcas/softcas.go

@@ -215,7 +215,6 @@ func (c *SoftCAS) getCertSigner() ([]*x509.Certificate, crypto.Signer, error) {
 		return c.CertificateSigner()
 	}
 	return c.CertificateChain, c.Signer, nil
-
 }
 
 // createKey uses the configured kms to create a key.

cas/softcas/softcas_test.go

@@ -261,9 +261,6 @@ func TestSoftCAS_CreateCertificate(t *testing.T) {
 	tmplNotBefore := *testTemplate
 	tmplNotBefore.NotBefore = testNow
 
-	tmplNotAfter := *testTemplate
-	tmplNotAfter.NotAfter = testNow.Add(24 * time.Hour)
-
 	tmplWithLifetime := *testTemplate
 	tmplWithLifetime.NotBefore = testNow
 	tmplWithLifetime.NotAfter = testNow.Add(24 * time.Hour)

commands/app.go

@@ -196,7 +196,7 @@ To get a linked authority token:
 	}
 
 	go ca.StopReloaderHandler(srv)
-	if err = srv.Run(); err != nil && err != http.ErrServerClosed {
+	if err = srv.Run(); err != nil && !errors.Is(err, http.ErrServerClosed) {
 		fatal(err)
 	}
 	return nil

commands/onboard.go

@@ -97,6 +97,7 @@ func onboardAction(ctx *cli.Context) error {
 	if err != nil {
 		return errors.Wrap(err, "error connecting onboarding guide")
 	}
+	defer res.Body.Close()
 	if res.StatusCode >= 400 {
 		var msg onboardingError
 		if err := readJSON(res.Body, &msg); err != nil {
@@ -158,7 +159,7 @@ func onboardAction(ctx *cli.Context) error {
 	}
 
 	go ca.StopReloaderHandler(srv)
-	if err := srv.Run(); err != nil && err != http.ErrServerClosed {
+	if err := srv.Run(); err != nil && !errors.Is(err, http.ErrServerClosed) {
 		fatal(err)
 	}
 

errs/error.go

@@ -92,7 +92,8 @@ func Wrap(status int, e error, m string, args ...interface{}) error {
 		return nil
 	}
 	_, opts := splitOptionArgs(args)
-	if err, ok := e.(*Error); ok {
+	var err *Error
+	if ok := errors.As(e, &err); ok {
 		err.Err = errors.Wrap(err.Err, m)
 		e = err
 	} else {
@@ -108,7 +109,8 @@ func Wrapf(status int, e error, format string, args ...interface{}) error {
 		return nil
 	}
 	as, opts := splitOptionArgs(args)
-	if err, ok := e.(*Error); ok {
+	var err *Error
+	if ok := errors.As(e, &err); ok {
 		err.Err = errors.Wrapf(err.Err, format, args...)
 		e = err
 	} else {
@@ -141,6 +143,7 @@ func (e *Error) UnmarshalJSON(data []byte) error {
 
 // Format implements the fmt.Formatter interface.
 func (e *Error) Format(f fmt.State, c rune) {
+	//nolint:errorlint // ignore type assertion warning. casting to interface is hard.
 	if err, ok := e.Err.(fmt.Formatter); ok {
 		err.Format(f, c)
 		return
@@ -246,11 +249,12 @@ func New(status int, format string, args ...interface{}) error {
 
 // NewError creates a new http error with the given error and message.
 func NewError(status int, err error, format string, args ...interface{}) error {
-	if _, ok := err.(*Error); ok {
+	var e *Error
+	if errors.As(err, &e) {
 		return err
 	}
 	msg := fmt.Sprintf(format, args...)
-	if _, ok := err.(log.StackTracedError); !ok {
+	if _, ok := log.AsStackTracedError(err); !ok {
 		err = errors.Wrap(err, msg)
 	}
 	return &Error{
@@ -263,16 +267,13 @@ func NewError(status int, err error, format string, args ...interface{}) error {
 // NewErr returns a new Error. If the given error implements the StatusCoder
 // interface we will ignore the given status.
 func NewErr(status int, err error, opts ...Option) error {
-	var (
+	var e *Error
-		e  *Error
+	if !errors.As(err, &e) {
-		ok bool
+		if sc, ok := render.AsStatusCodedError(err); ok {
-	)
-	if e, ok = err.(*Error); !ok {
-		if sc, ok := err.(render.StatusCodedError); ok {
 			e = &Error{Status: sc.StatusCode(), Err: err}
 		} else {
 			cause := errors.Cause(err)
-			if sc, ok := cause.(render.StatusCodedError); ok {
+			if sc, ok := render.AsStatusCodedError(cause); ok {
 				e = &Error{Status: sc.StatusCode(), Err: err}
 			} else {
 				e = &Error{Status: status, Err: err}
@@ -299,7 +300,8 @@ func Errorf(code int, format string, args ...interface{}) error {
 // ApplyOptions applies the given options to the error if is the type *Error.
 // TODO(mariano): try to get rid of this.
 func ApplyOptions(err error, opts ...interface{}) error {
-	if e, ok := err.(*Error); ok {
+	var e *Error
+	if ok := errors.As(err, &e); ok {
 		_, o := splitOptionArgs(opts)
 		for _, fn := range o {
 			fn(e)

errs/errors_test.go

@@ -57,6 +57,7 @@ func TestError_UnmarshalJSON(t *testing.T) {
 			if err := e.UnmarshalJSON(tt.args.data); (err != nil) != tt.wantErr {
 				t.Errorf("Error.UnmarshalJSON() error = %v, wantErr %v", err, tt.wantErr)
 			}
+			//nolint:govet // best option
 			if !reflect.DeepEqual(tt.expected, e) {
 				t.Errorf("Error.UnmarshalJSON() wants = %+v, got %+v", tt.expected, e)
 			}

pki/pki.go

@@ -389,7 +389,7 @@ func New(o apiv1.Options, opts ...Option) (*PKI, error) {
 		if port == "443" || p.options.isHelm {
 			p.Defaults.CaUrl = fmt.Sprintf("https://%s", p.Defaults.CaUrl)
 		} else {
-			p.Defaults.CaUrl = fmt.Sprintf("https://%s:%s", p.Defaults.CaUrl, port)
+			p.Defaults.CaUrl = fmt.Sprintf("https://%s", net.JoinHostPort(p.Defaults.CaUrl, port))
 		}
 	}
 

policy/engine.go

@@ -73,7 +73,6 @@ func (e *NamePolicyError) Detail() string {
 // TODO(hs): implement matching URI schemes, paths, etc; not just the domain part of URI domains
 
 type NamePolicyEngine struct {
-
 	// verifySubjectCommonName is set when Subject Common Name must be verified
 	verifySubjectCommonName bool
 	// allowLiteralWildcardNames allows literal wildcard DNS domains
@@ -107,7 +106,6 @@ type NamePolicyEngine struct {
 
 // NewNamePolicyEngine creates a new NamePolicyEngine with NamePolicyOptions
 func New(opts ...NamePolicyOption) (*NamePolicyEngine, error) {
-
 	e := &NamePolicyEngine{}
 	for _, option := range opts {
 		if err := option(e); err != nil {
@@ -153,7 +151,6 @@ func New(opts ...NamePolicyOption) (*NamePolicyEngine, error) {
 // duplicate values removed. It retains the order of elements
 // in the source slice.
 func removeDuplicates(items []string) (ret []string) {
-
 	// no need to remove dupes; return original
 	if len(items) <= 1 {
 		return items
@@ -179,7 +176,6 @@ func removeDuplicates(items []string) (ret []string) {
 // the source slice. An IPNet is considered duplicate if its CIDR
 // notation exists multiple times in the slice.
 func removeDuplicateIPNets(items []*net.IPNet) (ret []*net.IPNet) {
-
 	// no need to remove dupes; return original
 	if len(items) <= 1 {
 		return items

policy/validate.go

@@ -8,6 +8,7 @@ package policy
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"net"
 	"net/url"
@@ -21,7 +22,6 @@ import (
 
 // validateNames verifies that all names are allowed.
 func (e *NamePolicyEngine) validateNames(dnsNames []string, ips []net.IP, emailAddresses []string, uris []*url.URL, principals []string) error {
-
 	// nothing to compare against; return early
 	if e.totalNumberOfConstraints == 0 {
 		return nil
@@ -182,7 +182,6 @@ func (e *NamePolicyEngine) validateNames(dnsNames []string, ips []net.IP, emailA
 
 // validateCommonName verifies that the Subject Common Name is allowed
 func (e *NamePolicyEngine) validateCommonName(commonName string) error {
-
 	// nothing to compare against; return early
 	if e.totalNumberOfConstraints == 0 {
 		return nil
@@ -212,7 +211,8 @@ func (e *NamePolicyEngine) validateCommonName(commonName string) error {
 
 	err := e.validateNames(dnsNames, ips, emails, uris, []string{})
 
-	if pe, ok := err.(*NamePolicyError); ok {
+	var pe *NamePolicyError
+	if errors.As(err, &pe) {
 		// override the name type with CN
 		pe.NameType = CNNameType
 	}
@@ -229,7 +229,6 @@ func checkNameConstraints(
 	parsedName interface{},
 	match func(parsedName, constraint interface{}) (match bool, err error),
 	permitted, excluded interface{}) error {
-
 	excludedValue := reflect.ValueOf(excluded)
 
 	for i := 0; i < excludedValue.Len(); i++ {
@@ -552,7 +551,6 @@ func (e *NamePolicyEngine) matchDomainConstraint(domain, constraint string) (boo
 
 // SOURCE: https://cs.opensource.google/go/go/+/refs/tags/go1.17.5:src/crypto/x509/verify.go
 func matchIPConstraint(ip net.IP, constraint *net.IPNet) (bool, error) {
-
 	// TODO(hs): this is code from Go library, but I got some unexpected result:
 	// with permitted net 127.0.0.0/24, 127.0.0.1 is NOT allowed. When parsing 127.0.0.1 as net.IP
 	// which is in the IPAddresses slice, the underlying length is 16. The contraint.IP has a length

scep/api/api.go

@@ -350,7 +350,6 @@ func formatCapabilities(caps []string) []byte {
 
 // writeResponse writes a SCEP response back to the SCEP client.
 func writeResponse(w http.ResponseWriter, res Response) {
-
 	if res.Error != nil {
 		log.Error(w, res.Error)
 	}

scep/authority.go

@@ -71,7 +71,6 @@ type SignAuthority interface {
 
 // New returns a new Authority that implements the SCEP interface.
 func New(signAuth SignAuthority, ops AuthorityOptions) (*Authority, error) {
-
 	authority := &Authority{
 		prefix:   ops.Prefix,
 		dns:      ops.DNS,
@@ -145,7 +144,6 @@ func (a *Authority) getLinkExplicit(provisionerName string, abs bool, baseURL *u
 
 // GetCACertificates returns the certificate (chain) for the CA
 func (a *Authority) GetCACertificates(ctx context.Context) ([]*x509.Certificate, error) {
-
 	// TODO: this should return: the "SCEP Server (RA)" certificate, the issuing CA up to and excl. the root
 	// Some clients do need the root certificate however; also see: https://github.com/openxpki/openxpki/issues/73
 	//
@@ -385,7 +383,6 @@ func (a *Authority) SignCSR(ctx context.Context, csr *x509.CertificateRequest, m
 
 // CreateFailureResponse creates an appropriately signed reply for PKI operations
 func (a *Authority) CreateFailureResponse(ctx context.Context, csr *x509.CertificateRequest, msg *PKIMessage, info FailInfoName, infoText string) (*PKIMessage, error) {
-
 	config := pkcs7.SignerInfoConfig{
 		ExtraSignedAttributes: []pkcs7.Attribute{
 			{
@@ -471,7 +468,6 @@ func (a *Authority) MatchChallengePassword(ctx context.Context, password string)
 
 // GetCACaps returns the CA capabilities
 func (a *Authority) GetCACaps(ctx context.Context) []string {
-
 	p, err := provisionerFromContext(ctx)
 	if err != nil {
 		return defaultCapabilities

scep/options.go

@@ -20,7 +20,6 @@ type Options struct {
 
 // Validate checks the fields in Options.
 func (o *Options) Validate() error {
-
 	if o.CertificateChain == nil {
 		return errors.New("certificate chain not configured correctly")
 	}