certificates/authority/provisioner/utils_test.go

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package provisioner
import (
"crypto"
"crypto/rand"
"crypto/sha256"
"crypto/x509"
"encoding/base64"
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"encoding/hex"
"encoding/json"
"encoding/pem"
"fmt"
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"net/http"
"net/http/httptest"
"os"
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"strings"
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"time"
"github.com/pkg/errors"
"go.step.sm/crypto/jose"
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"go.step.sm/crypto/pemutil"
"go.step.sm/crypto/randutil"
"golang.org/x/crypto/ssh"
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)
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var (
defaultDisableRenewal = false
defaultEnableSSHCA = true
globalProvisionerClaims = Claims{
MinTLSDur: &Duration{5 * time.Minute},
MaxTLSDur: &Duration{24 * time.Hour},
DefaultTLSDur: &Duration{24 * time.Hour},
DisableRenewal: &defaultDisableRenewal,
MinUserSSHDur: &Duration{Duration: 5 * time.Minute}, // User SSH certs
MaxUserSSHDur: &Duration{Duration: 24 * time.Hour},
DefaultUserSSHDur: &Duration{Duration: 16 * time.Hour},
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MinHostSSHDur: &Duration{Duration: 5 * time.Minute}, // Host SSH certs
MaxHostSSHDur: &Duration{Duration: 30 * 24 * time.Hour},
DefaultHostSSHDur: &Duration{Duration: 30 * 24 * time.Hour},
EnableSSHCA: &defaultEnableSSHCA,
}
testAudiences = Audiences{
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Sign: []string{"https://ca.smallstep.com/1.0/sign", "https://ca.smallstep.com/sign"},
Revoke: []string{"https://ca.smallstep.com/1.0/revoke", "https://ca.smallstep.com/revoke"},
SSHSign: []string{"https://ca.smallstep.com/1.0/ssh/sign"},
SSHRevoke: []string{"https://ca.smallstep.com/1.0/ssh/revoke"},
SSHRenew: []string{"https://ca.smallstep.com/1.0/ssh/renew"},
SSHRekey: []string{"https://ca.smallstep.com/1.0/ssh/rekey"},
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}
)
const awsTestCertificate = `-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`
const awsTestKey = `-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----`
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func must(args ...interface{}) []interface{} {
if l := len(args); l > 0 && args[l-1] != nil {
if err, ok := args[l-1].(error); ok {
panic(err)
}
}
return args
}
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func generateJSONWebKey() (*jose.JSONWebKey, error) {
jwk, err := jose.GenerateJWK("EC", "P-256", "ES256", "sig", "", 0)
if err != nil {
return nil, err
}
fp, err := jwk.Thumbprint(crypto.SHA256)
if err != nil {
return nil, err
}
jwk.KeyID = string(hex.EncodeToString(fp))
return jwk, nil
}
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func generateJSONWebKeySet(n int) (jose.JSONWebKeySet, error) {
var keySet jose.JSONWebKeySet
for i := 0; i < n; i++ {
key, err := generateJSONWebKey()
if err != nil {
return jose.JSONWebKeySet{}, err
}
keySet.Keys = append(keySet.Keys, *key)
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}
return keySet, nil
}
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func encryptJSONWebKey(jwk *jose.JSONWebKey) (*jose.JSONWebEncryption, error) {
b, err := json.Marshal(jwk)
if err != nil {
return nil, err
}
salt, err := randutil.Salt(jose.PBKDF2SaltSize)
if err != nil {
return nil, err
}
opts := new(jose.EncrypterOptions)
opts.WithContentType(jose.ContentType("jwk+json"))
recipient := jose.Recipient{
Algorithm: jose.PBES2_HS256_A128KW,
Key: []byte("password"),
PBES2Count: jose.PBKDF2Iterations,
PBES2Salt: salt,
}
encrypter, err := jose.NewEncrypter(jose.DefaultEncAlgorithm, recipient, opts)
if err != nil {
return nil, err
}
return encrypter.Encrypt(b)
}
func decryptJSONWebKey(key string) (*jose.JSONWebKey, error) {
enc, err := jose.ParseEncrypted(key)
if err != nil {
return nil, err
}
b, err := enc.Decrypt([]byte("password"))
if err != nil {
return nil, err
}
jwk := new(jose.JSONWebKey)
if err := json.Unmarshal(b, jwk); err != nil {
return nil, err
}
return jwk, nil
}
func generateJWK() (*JWK, error) {
name, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
jwk, err := generateJSONWebKey()
if err != nil {
return nil, err
}
jwe, err := encryptJSONWebKey(jwk)
if err != nil {
return nil, err
}
public := jwk.Public()
encrypted, err := jwe.CompactSerialize()
if err != nil {
return nil, err
}
claimer, err := NewClaimer(nil, globalProvisionerClaims)
if err != nil {
return nil, err
}
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return &JWK{
base: &base{},
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Name: name,
Type: "JWK",
Key: &public,
EncryptedKey: encrypted,
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Claims: &globalProvisionerClaims,
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audiences: testAudiences,
claimer: claimer,
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}, nil
}
func generateK8sSA(inputPubKey interface{}) (*K8sSA, error) {
fooPubB, err := os.ReadFile("./testdata/certs/foo.pub")
if err != nil {
return nil, err
}
fooPub, err := pemutil.ParseKey(fooPubB)
if err != nil {
return nil, err
}
barPubB, err := os.ReadFile("./testdata/certs/bar.pub")
if err != nil {
return nil, err
}
barPub, err := pemutil.ParseKey(barPubB)
if err != nil {
return nil, err
}
claimer, err := NewClaimer(nil, globalProvisionerClaims)
if err != nil {
return nil, err
}
pubKeys := []interface{}{fooPub, barPub}
if inputPubKey != nil {
pubKeys = append(pubKeys, inputPubKey)
}
return &K8sSA{
base: &base{},
Name: K8sSAName,
Type: "K8sSA",
Claims: &globalProvisionerClaims,
audiences: testAudiences,
claimer: claimer,
pubKeys: pubKeys,
}, nil
}
func generateSSHPOP() (*SSHPOP, error) {
name, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
claimer, err := NewClaimer(nil, globalProvisionerClaims)
if err != nil {
return nil, err
}
userB, err := os.ReadFile("./testdata/certs/ssh_user_ca_key.pub")
if err != nil {
return nil, err
}
userKey, _, _, _, err := ssh.ParseAuthorizedKey(userB)
if err != nil {
return nil, err
}
hostB, err := os.ReadFile("./testdata/certs/ssh_host_ca_key.pub")
if err != nil {
return nil, err
}
hostKey, _, _, _, err := ssh.ParseAuthorizedKey(hostB)
if err != nil {
return nil, err
}
return &SSHPOP{
base: &base{},
Name: name,
Type: "SSHPOP",
Claims: &globalProvisionerClaims,
audiences: testAudiences,
claimer: claimer,
sshPubKeys: &SSHKeys{
UserKeys: []ssh.PublicKey{userKey},
HostKeys: []ssh.PublicKey{hostKey},
},
}, nil
}
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func generateX5C(root []byte) (*X5C, error) {
if root == nil {
root = []byte(`-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----`)
}
name, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
claimer, err := NewClaimer(nil, globalProvisionerClaims)
if err != nil {
return nil, err
}
rootPool := x509.NewCertPool()
var (
block *pem.Block
rest = root
)
for rest != nil {
block, rest = pem.Decode(rest)
if block == nil {
break
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, errors.Wrap(err, "error parsing x509 certificate from PEM block")
}
rootPool.AddCert(cert)
}
return &X5C{
base: &base{},
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Name: name,
Type: "X5C",
Roots: root,
Claims: &globalProvisionerClaims,
audiences: testAudiences,
claimer: claimer,
rootPool: rootPool,
}, nil
}
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func generateOIDC() (*OIDC, error) {
name, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
clientID, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
issuer, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
jwk, err := generateJSONWebKey()
if err != nil {
return nil, err
}
claimer, err := NewClaimer(nil, globalProvisionerClaims)
if err != nil {
return nil, err
}
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return &OIDC{
base: &base{},
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Name: name,
Type: "OIDC",
ClientID: clientID,
ConfigurationEndpoint: "https://example.com/.well-known/openid-configuration",
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Claims: &globalProvisionerClaims,
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configuration: openIDConfiguration{
Issuer: issuer,
JWKSetURI: "https://example.com/.well-known/jwks",
},
keyStore: &keyStore{
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keySet: jose.JSONWebKeySet{Keys: []jose.JSONWebKey{*jwk}},
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expiry: time.Now().Add(24 * time.Hour),
},
claimer: claimer,
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}, nil
}
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func generateGCP() (*GCP, error) {
name, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
serviceAccount, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
jwk, err := generateJSONWebKey()
if err != nil {
return nil, err
}
claimer, err := NewClaimer(nil, globalProvisionerClaims)
if err != nil {
return nil, err
}
return &GCP{
base: &base{},
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Type: "GCP",
Name: name,
ServiceAccounts: []string{serviceAccount},
Claims: &globalProvisionerClaims,
claimer: claimer,
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config: newGCPConfig(),
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keyStore: &keyStore{
keySet: jose.JSONWebKeySet{Keys: []jose.JSONWebKey{*jwk}},
expiry: time.Now().Add(24 * time.Hour),
},
audiences: testAudiences.WithFragment("gcp/" + name),
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}, nil
}
func generateAWS() (*AWS, error) {
name, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
accountID, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
claimer, err := NewClaimer(nil, globalProvisionerClaims)
if err != nil {
return nil, err
}
block, _ := pem.Decode([]byte(awsTestCertificate))
if block == nil || block.Type != "CERTIFICATE" {
return nil, errors.New("error decoding AWS certificate")
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, errors.Wrap(err, "error parsing AWS certificate")
}
return &AWS{
base: &base{},
Type: "AWS",
Name: name,
Accounts: []string{accountID},
Claims: &globalProvisionerClaims,
IMDSVersions: []string{"v2", "v1"},
claimer: claimer,
config: &awsConfig{
identityURL: awsIdentityURL,
signatureURL: awsSignatureURL,
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tokenURL: awsAPITokenURL,
tokenTTL: awsAPITokenTTL,
certificates: []*x509.Certificate{cert},
signatureAlgorithm: awsSignatureAlgorithm,
},
audiences: testAudiences.WithFragment("aws/" + name),
}, nil
}
func generateAWSWithServer() (*AWS, *httptest.Server, error) {
aws, err := generateAWS()
if err != nil {
return nil, nil, err
}
block, _ := pem.Decode([]byte(awsTestKey))
if block == nil || block.Type != "RSA PRIVATE KEY" {
return nil, nil, errors.New("error decoding AWS key")
}
key, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
return nil, nil, errors.Wrap(err, "error parsing AWS private key")
}
doc, err := json.MarshalIndent(awsInstanceIdentityDocument{
AccountID: aws.Accounts[0],
Architecture: "x86_64",
AvailabilityZone: "us-west-2b",
ImageID: "image-id",
InstanceID: "instance-id",
InstanceType: "t2.micro",
PendingTime: time.Now(),
PrivateIP: "127.0.0.1",
Region: "us-west-1",
Version: "2017-09-30",
}, "", " ")
if err != nil {
return nil, nil, err
}
sum := sha256.Sum256(doc)
signature, err := key.Sign(rand.Reader, sum[:], crypto.SHA256)
if err != nil {
return nil, nil, errors.Wrap(err, "error signing document")
}
token := "AQAEAEEO9-7Z88ewKFpboZuDlFYWz9A3AN-wMOVzjEhfAyXW31BvVw=="
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.URL.Path {
case "/latest/dynamic/instance-identity/document":
// check for API token
if r.Header.Get("X-aws-ec2-metadata-token") != token {
w.WriteHeader(http.StatusUnauthorized)
w.Write([]byte("401 Unauthorized"))
}
w.Write(doc)
case "/latest/dynamic/instance-identity/signature":
// check for API token
if r.Header.Get("X-aws-ec2-metadata-token") != token {
w.WriteHeader(http.StatusUnauthorized)
w.Write([]byte("401 Unauthorized"))
}
w.Write([]byte(base64.StdEncoding.EncodeToString(signature)))
case "/latest/api/token":
w.Write([]byte(token))
case "/bad-document":
w.Write([]byte("{}"))
case "/bad-signature":
w.Write([]byte("YmFkLXNpZ25hdHVyZQo="))
case "/bad-json":
w.Write([]byte("{"))
default:
http.NotFound(w, r)
}
}))
aws.config.identityURL = srv.URL + "/latest/dynamic/instance-identity/document"
aws.config.signatureURL = srv.URL + "/latest/dynamic/instance-identity/signature"
aws.config.tokenURL = srv.URL + "/latest/api/token"
return aws, srv, nil
}
func generateAWSV1Only() (*AWS, error) {
name, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
accountID, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
claimer, err := NewClaimer(nil, globalProvisionerClaims)
if err != nil {
return nil, err
}
block, _ := pem.Decode([]byte(awsTestCertificate))
if block == nil || block.Type != "CERTIFICATE" {
return nil, errors.New("error decoding AWS certificate")
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, errors.Wrap(err, "error parsing AWS certificate")
}
return &AWS{
base: &base{},
Type: "AWS",
Name: name,
Accounts: []string{accountID},
Claims: &globalProvisionerClaims,
IMDSVersions: []string{"v1"},
claimer: claimer,
config: &awsConfig{
identityURL: awsIdentityURL,
signatureURL: awsSignatureURL,
tokenURL: awsAPITokenURL,
tokenTTL: awsAPITokenTTL,
certificates: []*x509.Certificate{cert},
signatureAlgorithm: awsSignatureAlgorithm,
},
audiences: testAudiences.WithFragment("aws/" + name),
}, nil
}
func generateAWSWithServerV1Only() (*AWS, *httptest.Server, error) {
aws, err := generateAWSV1Only()
if err != nil {
return nil, nil, err
}
block, _ := pem.Decode([]byte(awsTestKey))
if block == nil || block.Type != "RSA PRIVATE KEY" {
return nil, nil, errors.New("error decoding AWS key")
}
key, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
return nil, nil, errors.Wrap(err, "error parsing AWS private key")
}
doc, err := json.MarshalIndent(awsInstanceIdentityDocument{
AccountID: aws.Accounts[0],
Architecture: "x86_64",
AvailabilityZone: "us-west-2b",
ImageID: "image-id",
InstanceID: "instance-id",
InstanceType: "t2.micro",
PendingTime: time.Now(),
PrivateIP: "127.0.0.1",
Region: "us-west-1",
Version: "2017-09-30",
}, "", " ")
if err != nil {
return nil, nil, err
}
sum := sha256.Sum256(doc)
signature, err := key.Sign(rand.Reader, sum[:], crypto.SHA256)
if err != nil {
return nil, nil, errors.Wrap(err, "error signing document")
}
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.URL.Path {
case "/latest/dynamic/instance-identity/document":
w.Write(doc)
case "/latest/dynamic/instance-identity/signature":
w.Write([]byte(base64.StdEncoding.EncodeToString(signature)))
case "/bad-document":
w.Write([]byte("{}"))
case "/bad-signature":
w.Write([]byte("YmFkLXNpZ25hdHVyZQo="))
case "/bad-json":
w.Write([]byte("{"))
default:
http.NotFound(w, r)
}
}))
aws.config.identityURL = srv.URL + "/latest/dynamic/instance-identity/document"
aws.config.signatureURL = srv.URL + "/latest/dynamic/instance-identity/signature"
return aws, srv, nil
}
func generateAzure() (*Azure, error) {
name, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
tenantID, err := randutil.Alphanumeric(10)
if err != nil {
return nil, err
}
claimer, err := NewClaimer(nil, globalProvisionerClaims)
if err != nil {
return nil, err
}
jwk, err := generateJSONWebKey()
if err != nil {
return nil, err
}
return &Azure{
base: &base{},
Type: "Azure",
Name: name,
TenantID: tenantID,
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Audience: azureDefaultAudience,
Claims: &globalProvisionerClaims,
claimer: claimer,
config: newAzureConfig(tenantID),
oidcConfig: openIDConfiguration{
Issuer: "https://sts.windows.net/" + tenantID + "/",
JWKSetURI: "https://login.microsoftonline.com/common/discovery/keys",
},
keyStore: &keyStore{
keySet: jose.JSONWebKeySet{Keys: []jose.JSONWebKey{*jwk}},
expiry: time.Now().Add(24 * time.Hour),
},
}, nil
}
func generateAzureWithServer() (*Azure, *httptest.Server, error) {
az, err := generateAzure()
if err != nil {
return nil, nil, err
}
writeJSON := func(w http.ResponseWriter, v interface{}) {
b, err := json.Marshal(v)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
w.Header().Add("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
w.Write(b)
}
getPublic := func(ks jose.JSONWebKeySet) jose.JSONWebKeySet {
var ret jose.JSONWebKeySet
for _, k := range ks.Keys {
ret.Keys = append(ret.Keys, k.Public())
}
return ret
}
issuer := "https://sts.windows.net/" + az.TenantID + "/"
srv := httptest.NewUnstartedServer(nil)
srv.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.URL.Path {
case "/error":
http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
case "/" + az.TenantID + "/.well-known/openid-configuration":
writeJSON(w, openIDConfiguration{Issuer: issuer, JWKSetURI: srv.URL + "/jwks_uri"})
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case "/openid-configuration-no-issuer":
writeJSON(w, openIDConfiguration{Issuer: "", JWKSetURI: srv.URL + "/jwks_uri"})
case "/openid-configuration-fail-jwk":
writeJSON(w, openIDConfiguration{Issuer: issuer, JWKSetURI: srv.URL + "/error"})
case "/random":
keySet := must(generateJSONWebKeySet(2))[0].(jose.JSONWebKeySet)
w.Header().Add("Cache-Control", "max-age=5")
writeJSON(w, getPublic(keySet))
case "/private":
writeJSON(w, az.keyStore.keySet)
case "/jwks_uri":
w.Header().Add("Cache-Control", "max-age=5")
writeJSON(w, getPublic(az.keyStore.keySet))
case "/metadata/identity/oauth2/token":
tok, err := generateAzureToken("subject", issuer, "https://management.azure.com/", az.TenantID, "subscriptionID", "resourceGroup", "virtualMachine", time.Now(), &az.keyStore.keySet.Keys[0])
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
} else {
writeJSON(w, azureIdentityToken{
AccessToken: tok,
})
}
default:
http.NotFound(w, r)
}
})
srv.Start()
az.config.oidcDiscoveryURL = srv.URL + "/" + az.TenantID + "/.well-known/openid-configuration"
az.config.identityTokenURL = srv.URL + "/metadata/identity/oauth2/token"
return az, srv, nil
}
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func generateCollection(nJWK, nOIDC int) (*Collection, error) {
col := NewCollection(testAudiences)
for i := 0; i < nJWK; i++ {
p, err := generateJWK()
if err != nil {
return nil, err
}
col.Store(p)
}
for i := 0; i < nOIDC; i++ {
p, err := generateOIDC()
if err != nil {
return nil, err
}
col.Store(p)
}
return col, nil
}
func generateSimpleToken(iss, aud string, jwk *jose.JSONWebKey) (string, error) {
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return generateToken("subject", iss, aud, "name@smallstep.com", []string{"test.smallstep.com"}, time.Now(), jwk)
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}
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type tokOption func(*jose.SignerOptions) error
func withX5CHdr(certs []*x509.Certificate) tokOption {
return func(so *jose.SignerOptions) error {
strs := make([]string, len(certs))
for i, cert := range certs {
strs[i] = base64.StdEncoding.EncodeToString(cert.Raw)
}
so.WithHeader("x5c", strs)
return nil
}
}
func withSSHPOPFile(cert *ssh.Certificate) tokOption {
return func(so *jose.SignerOptions) error {
so.WithHeader("sshpop", base64.StdEncoding.EncodeToString(cert.Marshal()))
return nil
}
}
func generateToken(sub, iss, aud, email string, sans []string, iat time.Time, jwk *jose.JSONWebKey, tokOpts ...tokOption) (string, error) {
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so := new(jose.SignerOptions)
so.WithType("JWT")
so.WithHeader("kid", jwk.KeyID)
for _, o := range tokOpts {
if err := o(so); err != nil {
return "", err
}
}
sig, err := jose.NewSigner(jose.SigningKey{Algorithm: jose.ES256, Key: jwk.Key}, so)
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if err != nil {
return "", err
}
id, err := randutil.ASCII(64)
if err != nil {
return "", err
}
claims := struct {
jose.Claims
Email string `json:"email"`
SANS []string `json:"sans"`
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}{
Claims: jose.Claims{
ID: id,
Subject: sub,
Issuer: iss,
IssuedAt: jose.NewNumericDate(iat),
NotBefore: jose.NewNumericDate(iat),
Expiry: jose.NewNumericDate(iat.Add(5 * time.Minute)),
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Audience: []string{aud},
},
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Email: email,
SANS: sans,
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}
return jose.Signed(sig).Claims(claims).CompactSerialize()
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}
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func generateOIDCToken(sub, iss, aud, email, preferredUsername string, iat time.Time, jwk *jose.JSONWebKey, tokOpts ...tokOption) (string, error) {
so := new(jose.SignerOptions)
so.WithType("JWT")
so.WithHeader("kid", jwk.KeyID)
for _, o := range tokOpts {
if err := o(so); err != nil {
return "", err
}
}
sig, err := jose.NewSigner(jose.SigningKey{Algorithm: jose.ES256, Key: jwk.Key}, so)
if err != nil {
return "", err
}
id, err := randutil.ASCII(64)
if err != nil {
return "", err
}
claims := struct {
jose.Claims
Email string `json:"email"`
PreferredUsername string `json:"preferred_username,omitempty"`
}{
Claims: jose.Claims{
ID: id,
Subject: sub,
Issuer: iss,
IssuedAt: jose.NewNumericDate(iat),
NotBefore: jose.NewNumericDate(iat),
Expiry: jose.NewNumericDate(iat.Add(5 * time.Minute)),
Audience: []string{aud},
},
Email: email,
PreferredUsername: preferredUsername,
}
return jose.Signed(sig).Claims(claims).CompactSerialize()
}
func generateX5CSSHToken(jwk *jose.JSONWebKey, claims *x5cPayload, tokOpts ...tokOption) (string, error) {
so := new(jose.SignerOptions)
so.WithType("JWT")
so.WithHeader("kid", jwk.KeyID)
for _, o := range tokOpts {
if err := o(so); err != nil {
return "", err
}
}
sig, err := jose.NewSigner(jose.SigningKey{Algorithm: jose.ES256, Key: jwk.Key}, so)
if err != nil {
return "", err
}
return jose.Signed(sig).Claims(claims).CompactSerialize()
}
func getK8sSAPayload() *k8sSAPayload {
return &k8sSAPayload{
Claims: jose.Claims{
Issuer: k8sSAIssuer,
Subject: "foo",
},
Namespace: "ns-foo",
SecretName: "sn-foo",
ServiceAccountName: "san-foo",
ServiceAccountUID: "sauid-foo",
}
}
func generateK8sSAToken(jwk *jose.JSONWebKey, claims *k8sSAPayload, tokOpts ...tokOption) (string, error) {
so := new(jose.SignerOptions)
so.WithHeader("kid", jwk.KeyID)
for _, o := range tokOpts {
if err := o(so); err != nil {
return "", err
}
}
sig, err := jose.NewSigner(jose.SigningKey{Algorithm: jose.ES256, Key: jwk.Key}, so)
if err != nil {
return "", err
}
if claims == nil {
claims = getK8sSAPayload()
}
return jose.Signed(sig).Claims(*claims).CompactSerialize()
}
func generateSimpleSSHUserToken(iss, aud string, jwk *jose.JSONWebKey) (string, error) {
return generateSSHToken("subject@localhost", iss, aud, time.Now(), &SignSSHOptions{
CertType: "user",
Principals: []string{"name"},
}, jwk)
}
func generateSimpleSSHHostToken(iss, aud string, jwk *jose.JSONWebKey) (string, error) {
return generateSSHToken("subject@localhost", iss, aud, time.Now(), &SignSSHOptions{
CertType: "host",
Principals: []string{"smallstep.com"},
}, jwk)
}
func generateSSHToken(sub, iss, aud string, iat time.Time, sshOpts *SignSSHOptions, jwk *jose.JSONWebKey) (string, error) {
sig, err := jose.NewSigner(
jose.SigningKey{Algorithm: jose.ES256, Key: jwk.Key},
new(jose.SignerOptions).WithType("JWT").WithHeader("kid", jwk.KeyID),
)
if err != nil {
return "", err
}
id, err := randutil.ASCII(64)
if err != nil {
return "", err
}
claims := struct {
jose.Claims
Step *stepPayload `json:"step,omitempty"`
}{
Claims: jose.Claims{
ID: id,
Subject: sub,
Issuer: iss,
IssuedAt: jose.NewNumericDate(iat),
NotBefore: jose.NewNumericDate(iat),
Expiry: jose.NewNumericDate(iat.Add(5 * time.Minute)),
Audience: []string{aud},
},
Step: &stepPayload{
SSH: sshOpts,
},
}
return jose.Signed(sig).Claims(claims).CompactSerialize()
}
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func generateGCPToken(sub, iss, aud, instanceID, instanceName, projectID, zone string, iat time.Time, jwk *jose.JSONWebKey) (string, error) {
sig, err := jose.NewSigner(
jose.SigningKey{Algorithm: jose.ES256, Key: jwk.Key},
new(jose.SignerOptions).WithType("JWT").WithHeader("kid", jwk.KeyID),
)
if err != nil {
return "", err
}
aud, err = generateSignAudience("https://ca.smallstep.com", aud)
if err != nil {
return "", err
}
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claims := gcpPayload{
Claims: jose.Claims{
Subject: sub,
Issuer: iss,
IssuedAt: jose.NewNumericDate(iat),
NotBefore: jose.NewNumericDate(iat),
Expiry: jose.NewNumericDate(iat.Add(5 * time.Minute)),
Audience: []string{aud},
},
AuthorizedParty: sub,
Email: "foo@developer.gserviceaccount.com",
EmailVerified: true,
Google: gcpGooglePayload{
ComputeEngine: gcpComputeEnginePayload{
InstanceID: instanceID,
InstanceName: instanceName,
InstanceCreationTimestamp: jose.NewNumericDate(iat),
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ProjectID: projectID,
ProjectNumber: 1234567890,
Zone: zone,
},
},
}
return jose.Signed(sig).Claims(claims).CompactSerialize()
}
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func generateAWSToken(p *AWS, sub, iss, aud, accountID, instanceID, privateIP, region string, iat time.Time, key crypto.Signer) (string, error) {
doc, err := json.MarshalIndent(awsInstanceIdentityDocument{
AccountID: accountID,
Architecture: "x86_64",
AvailabilityZone: "us-west-2b",
ImageID: "ami-123123",
InstanceID: instanceID,
InstanceType: "t2.micro",
PendingTime: iat,
PrivateIP: privateIP,
Region: region,
Version: "2017-09-30",
}, "", " ")
if err != nil {
return "", err
}
sum := sha256.Sum256(doc)
signature, err := key.Sign(rand.Reader, sum[:], crypto.SHA256)
if err != nil {
return "", errors.Wrap(err, "error signing document")
}
sig, err := jose.NewSigner(
jose.SigningKey{Algorithm: jose.HS256, Key: signature},
new(jose.SignerOptions).WithType("JWT"),
)
if err != nil {
return "", err
}
aud, err = generateSignAudience("https://ca.smallstep.com", aud)
if err != nil {
return "", err
}
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unique := fmt.Sprintf("%s.%s", p.GetID(), instanceID)
sum = sha256.Sum256([]byte(unique))
claims := awsPayload{
Claims: jose.Claims{
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ID: strings.ToLower(hex.EncodeToString(sum[:])),
Subject: sub,
Issuer: iss,
IssuedAt: jose.NewNumericDate(iat),
NotBefore: jose.NewNumericDate(iat),
Expiry: jose.NewNumericDate(iat.Add(5 * time.Minute)),
Audience: []string{aud},
},
Amazon: awsAmazonPayload{
Document: doc,
Signature: signature,
},
}
return jose.Signed(sig).Claims(claims).CompactSerialize()
}
func generateAzureToken(sub, iss, aud, tenantID, subscriptionID, resourceGroup, virtualMachine string, iat time.Time, jwk *jose.JSONWebKey) (string, error) {
sig, err := jose.NewSigner(
jose.SigningKey{Algorithm: jose.ES256, Key: jwk.Key},
new(jose.SignerOptions).WithType("JWT").WithHeader("kid", jwk.KeyID),
)
if err != nil {
return "", err
}
claims := azurePayload{
Claims: jose.Claims{
Subject: sub,
Issuer: iss,
IssuedAt: jose.NewNumericDate(iat),
NotBefore: jose.NewNumericDate(iat),
Expiry: jose.NewNumericDate(iat.Add(5 * time.Minute)),
Audience: []string{aud},
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ID: "the-jti",
},
AppID: "the-appid",
AppIDAcr: "the-appidacr",
IdentityProvider: "the-idp",
ObjectID: "the-oid",
TenantID: tenantID,
Version: "the-version",
XMSMirID: fmt.Sprintf("/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Compute/virtualMachines/%s", subscriptionID, resourceGroup, virtualMachine),
}
return jose.Signed(sig).Claims(claims).CompactSerialize()
}
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func parseToken(token string) (*jose.JSONWebToken, *jose.Claims, error) {
tok, err := jose.ParseSigned(token)
if err != nil {
return nil, nil, err
}
claims := new(jose.Claims)
if err := tok.UnsafeClaimsWithoutVerification(claims); err != nil {
return nil, nil, err
}
return tok, claims, nil
}
func parseAWSToken(token string) (*jose.JSONWebToken, *awsPayload, error) {
tok, err := jose.ParseSigned(token)
if err != nil {
return nil, nil, err
}
claims := new(awsPayload)
if err := tok.UnsafeClaimsWithoutVerification(claims); err != nil {
return nil, nil, err
}
var doc awsInstanceIdentityDocument
if err := json.Unmarshal(claims.Amazon.Document, &doc); err != nil {
return nil, nil, errors.Wrap(err, "error unmarshaling identity document")
}
claims.document = doc
return tok, claims, nil
}
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func generateJWKServer(n int) *httptest.Server {
hits := struct {
Hits int `json:"hits"`
}{}
writeJSON := func(w http.ResponseWriter, v interface{}) {
b, err := json.Marshal(v)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
w.Header().Add("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
w.Write(b)
}
getPublic := func(ks jose.JSONWebKeySet) jose.JSONWebKeySet {
var ret jose.JSONWebKeySet
for _, k := range ks.Keys {
ret.Keys = append(ret.Keys, k.Public())
}
return ret
}
defaultKeySet := must(generateJSONWebKeySet(n))[0].(jose.JSONWebKeySet)
srv := httptest.NewUnstartedServer(nil)
srv.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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hits.Hits++
switch r.RequestURI {
case "/error":
http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
case "/hits":
writeJSON(w, hits)
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case "/.well-known/openid-configuration":
writeJSON(w, openIDConfiguration{Issuer: "the-issuer", JWKSetURI: srv.URL + "/jwks_uri"})
case "/common/.well-known/openid-configuration":
writeJSON(w, openIDConfiguration{Issuer: "https://login.microsoftonline.com/{tenantid}/v2.0", JWKSetURI: srv.URL + "/jwks_uri"})
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case "/random":
keySet := must(generateJSONWebKeySet(n))[0].(jose.JSONWebKeySet)
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w.Header().Add("Cache-Control", "max-age=5")
writeJSON(w, getPublic(keySet))
case "/no-cache":
keySet := must(generateJSONWebKeySet(n))[0].(jose.JSONWebKeySet)
w.Header().Add("Cache-Control", "no-cache, no-store, max-age=0, must-revalidate")
writeJSON(w, getPublic(keySet))
case "/private":
writeJSON(w, defaultKeySet)
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default:
w.Header().Add("Cache-Control", "max-age=5")
writeJSON(w, getPublic(defaultKeySet))
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}
})
srv.Start()
return srv
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}
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func generateACME() (*ACME, error) {
// Initialize provisioners
p := &ACME{
Type: "ACME",
Name: "test@acme-provisioner.com",
}
if err := p.Init(Config{Claims: globalProvisionerClaims}); err != nil {
return nil, err
}
return p, nil
}
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func parseCerts(b []byte) ([]*x509.Certificate, error) {
var (
block *pem.Block
rest = b
certs = []*x509.Certificate{}
)
for rest != nil {
block, rest = pem.Decode(rest)
if block == nil {
break
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, errors.Wrap(err, "error parsing x509 certificate from PEM block")
}
certs = append(certs, cert)
}
return certs, nil
}