[#1] Add wallet connect support

Signed-off-by: Denis Kirillov <denis@nspcc.ru>

cmd/neofs-rest-gw/integration_test.go

@@ -24,6 +24,7 @@ import (
 	"github.com/nspcc-dev/neofs-rest-gw/gen/restapi"
 	"github.com/nspcc-dev/neofs-rest-gw/gen/restapi/operations"
 	"github.com/nspcc-dev/neofs-rest-gw/handlers"
+	walletconnect "github.com/nspcc-dev/neofs-rest-gw/wallet-connect"
 	"github.com/nspcc-dev/neofs-sdk-go/container"
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
 	"github.com/nspcc-dev/neofs-sdk-go/eacl"
@@ -42,9 +43,12 @@ const (
 	devenvPrivateKey  = "1dd37fba80fec4e6a6f13fd708d8dcb3b29def768017052f6c930fa1c5d90bbb"
 	testListenAddress = "localhost:8082"
 	testHost          = "http://" + testListenAddress
-	testNode          = "localhost:8080"
+	testContainerNode = "localhost:8080"
+	testLocalNode     = "s01.neofs.devenv:8080"
 	containerName     = "test-container"
+	localVersion      = "local"
 
+	walletConnectQuery = "walletConnect"
 	// XBearerSignature header contains base64 encoded signature of the token body.
 	XBearerSignature = "X-Bearer-Signature"
 	// XBearerSignatureKey header contains hex encoded public key that corresponds the signature of the token body.
@@ -52,10 +56,29 @@ const (
 	// XBearerScope header contains operation scope for auth (bearer) token.
 	// It corresponds to 'object' or 'container' services in neofs.
 	XBearerScope = "X-Bearer-Scope"
+
+	// configuration tests
+	useWalletConnect    = false
+	useLocalEnvironment = false
 )
 
 func TestIntegration(t *testing.T) {
-	rootCtx := context.Background()
+	ctx := context.Background()
+	key, err := keys.NewPrivateKeyFromHex(devenvPrivateKey)
+	require.NoError(t, err)
+
+	if useLocalEnvironment {
+		runLocalTests(ctx, t, key)
+	} else {
+		runTestInContainer(ctx, t, key)
+	}
+}
+
+func runLocalTests(ctx context.Context, t *testing.T, key *keys.PrivateKey) {
+	runTests(ctx, t, key, localVersion)
+}
+
+func runTestInContainer(rootCtx context.Context, t *testing.T, key *keys.PrivateKey) {
 	aioImage := "nspccdev/neofs-aio-testcontainer:"
 	versions := []string{
 		//"0.24.0",
@@ -64,15 +87,30 @@ func TestIntegration(t *testing.T) {
 		//"0.27.5",
 		"latest",
 	}
-	key, err := keys.NewPrivateKeyFromHex(devenvPrivateKey)
-	require.NoError(t, err)
 
 	for _, version := range versions {
-		ctx, cancel2 := context.WithCancel(rootCtx)
+		ctx, cancel := context.WithCancel(rootCtx)
-
 		aioContainer := createDockerContainer(ctx, t, aioImage+version)
-		cancel := runServer(ctx, t)
+
-		clientPool := getPool(ctx, t, key)
+		runTests(ctx, t, key, version)
+
+		err := aioContainer.Terminate(ctx)
+		require.NoError(t, err)
+		cancel()
+		<-ctx.Done()
+	}
+}
+
+func runTests(ctx context.Context, t *testing.T, key *keys.PrivateKey, version string) {
+	node := testContainerNode
+	if version == localVersion {
+		node = testLocalNode
+	}
+
+	cancel := runServer(ctx, t, node)
+	defer cancel()
+
+	clientPool := getPool(ctx, t, key, node)
 	cnrID := createContainer(ctx, t, clientPool, containerName)
 	restrictByEACL(ctx, t, clientPool, cnrID)
 
@@ -82,17 +120,10 @@ func TestIntegration(t *testing.T) {
 
 	t.Run("rest put container "+version, func(t *testing.T) { restContainerPut(ctx, t, clientPool) })
 	t.Run("rest get container "+version, func(t *testing.T) { restContainerGet(ctx, t, clientPool, cnrID) })
-		t.Run("rest delete container"+version, func(t *testing.T) { restContainerDelete(ctx, t, clientPool) })
+	//t.Run("rest delete container "+version, func(t *testing.T) { restContainerDelete(ctx, t, clientPool) })
 	t.Run("rest put container eacl "+version, func(t *testing.T) { restContainerEACLPut(ctx, t, clientPool) })
 	t.Run("rest get container eacl "+version, func(t *testing.T) { restContainerEACLGet(ctx, t, clientPool, cnrID) })
 	t.Run("rest list containers	"+version, func(t *testing.T) { restContainerList(ctx, t, clientPool, cnrID) })
-
-		cancel()
-		err = aioContainer.Terminate(ctx)
-		require.NoError(t, err)
-		cancel2()
-		<-ctx.Done()
-	}
 }
 
 func createDockerContainer(ctx context.Context, t *testing.T, image string) testcontainers.Container {
@@ -112,10 +143,10 @@ func createDockerContainer(ctx context.Context, t *testing.T, image string) test
 	return aioC
 }
 
-func runServer(ctx context.Context, t *testing.T) context.CancelFunc {
+func runServer(ctx context.Context, t *testing.T, node string) context.CancelFunc {
 	cancelCtx, cancel := context.WithCancel(ctx)
 
-	v := getDefaultConfig()
+	v := getDefaultConfig(node)
 	l := newLogger(v)
 
 	neofsAPI, err := newNeofsAPI(cancelCtx, l, v)
@@ -145,9 +176,9 @@ func defaultHTTPClient() *http.Client {
 	return &http.Client{Timeout: 60 * time.Second}
 }
 
-func getDefaultConfig() *viper.Viper {
+func getDefaultConfig(node string) *viper.Viper {
 	v := config()
-	v.SetDefault(cfgPeers+".0.address", testNode)
+	v.SetDefault(cfgPeers+".0.address", node)
 	v.SetDefault(cfgPeers+".0.weight", 1)
 	v.SetDefault(cfgPeers+".0.priority", 1)
 	v.SetDefault(restapi.FlagListenAddress, testListenAddress)
@@ -156,9 +187,9 @@ func getDefaultConfig() *viper.Viper {
 	return v
 }
 
-func getPool(ctx context.Context, t *testing.T, key *keys.PrivateKey) *pool.Pool {
+func getPool(ctx context.Context, t *testing.T, key *keys.PrivateKey, node string) *pool.Pool {
 	var prm pool.InitParameters
-	prm.AddNode(pool.NewNodeParam(1, testNode, 1))
+	prm.AddNode(pool.NewNodeParam(1, node, 1))
 	prm.SetKey(&key.PrivateKey)
 	prm.SetHealthcheckTimeout(5 * time.Second)
 	prm.SetNodeDialTimeout(5 * time.Second)
@@ -204,7 +235,10 @@ func restObjectPut(ctx context.Context, t *testing.T, clientPool *pool.Pool, cnr
 	body, err := json.Marshal(&req)
 	require.NoError(t, err)
 
-	request, err := http.NewRequest(http.MethodPut, testHost+"/v1/objects", bytes.NewReader(body))
+	query := make(url.Values)
+	query.Add(walletConnectQuery, strconv.FormatBool(useWalletConnect))
+
+	request, err := http.NewRequest(http.MethodPut, testHost+"/v1/objects?"+query.Encode(), bytes.NewReader(body))
 	require.NoError(t, err)
 	prepareCommonHeaders(request.Header, bearerToken)
 	request.Header.Add("X-Attribute-"+attrKey, attrValue)
@@ -260,7 +294,10 @@ func restObjectGet(ctx context.Context, t *testing.T, p *pool.Pool, cnrID *cid.I
 	httpClient := defaultHTTPClient()
 	bearerToken := makeAuthObjectTokenRequest(ctx, t, bearer, httpClient)
 
-	request, err := http.NewRequest(http.MethodGet, testHost+"/v1/objects/"+cnrID.String()+"/"+objID.String(), nil)
+	query := make(url.Values)
+	query.Add(walletConnectQuery, strconv.FormatBool(useWalletConnect))
+
+	request, err := http.NewRequest(http.MethodGet, testHost+"/v1/objects/"+cnrID.String()+"/"+objID.String()+"?"+query.Encode(), nil)
 	require.NoError(t, err)
 	prepareCommonHeaders(request.Header, bearerToken)
 
@@ -295,7 +332,10 @@ func restObjectDelete(ctx context.Context, t *testing.T, p *pool.Pool, cnrID *ci
 	httpClient := defaultHTTPClient()
 	bearerToken := makeAuthObjectTokenRequest(ctx, t, bearer, httpClient)
 
-	request, err := http.NewRequest(http.MethodDelete, testHost+"/v1/objects/"+cnrID.String()+"/"+objID.String(), nil)
+	query := make(url.Values)
+	query.Add(walletConnectQuery, strconv.FormatBool(useWalletConnect))
+
+	request, err := http.NewRequest(http.MethodDelete, testHost+"/v1/objects/"+cnrID.String()+"/"+objID.String()+"?"+query.Encode(), nil)
 	require.NoError(t, err)
 	prepareCommonHeaders(request.Header, bearerToken)
 
@@ -360,7 +400,10 @@ func restContainerDelete(ctx context.Context, t *testing.T, clientPool *pool.Poo
 	httpClient := defaultHTTPClient()
 	bearerToken := makeAuthContainerTokenRequest(ctx, t, bearer, httpClient)
 
-	request, err := http.NewRequest(http.MethodDelete, testHost+"/v1/containers/"+cnrID.String(), nil)
+	query := make(url.Values)
+	query.Add(walletConnectQuery, strconv.FormatBool(useWalletConnect))
+
+	request, err := http.NewRequest(http.MethodDelete, testHost+"/v1/containers/"+cnrID.String()+"?"+query.Encode(), nil)
 	require.NoError(t, err)
 	request = request.WithContext(ctx)
 	prepareCommonHeaders(request.Header, bearerToken)
@@ -400,7 +443,10 @@ func restContainerEACLPut(ctx context.Context, t *testing.T, clientPool *pool.Po
 	body, err := json.Marshal(&req)
 	require.NoError(t, err)
 
-	request, err := http.NewRequest(http.MethodPut, testHost+"/v1/containers/"+cnrID.String()+"/eacl", bytes.NewReader(body))
+	query := make(url.Values)
+	query.Add(walletConnectQuery, strconv.FormatBool(useWalletConnect))
+
+	request, err := http.NewRequest(http.MethodPut, testHost+"/v1/containers/"+cnrID.String()+"/eacl?"+query.Encode(), bytes.NewReader(body))
 	require.NoError(t, err)
 	request = request.WithContext(ctx)
 	prepareCommonHeaders(request.Header, bearerToken)
@@ -521,24 +567,39 @@ func makeAuthTokenRequest(ctx context.Context, t *testing.T, bearer *models.Bear
 	binaryData, err := base64.StdEncoding.DecodeString(*stokenResp.Token)
 	require.NoError(t, err)
 
-	signatureData := signData(t, key, binaryData)
+	var bt *handlers.BearerToken
-	signature := base64.StdEncoding.EncodeToString(signatureData)
+	if useWalletConnect {
-
+		bt = signTokenWalletConnect(t, key, binaryData)
-	bt := handlers.BearerToken{
+	} else {
-		Token:     *stokenResp.Token,
+		bt = signToken(t, key, binaryData)
-		Signature: signature,
-		Key:       hexPubKey,
 	}
 
 	fmt.Printf("container token:\n%+v\n", bt)
-	return &bt
+	return bt
 }
 
-func signData(t *testing.T, key *keys.PrivateKey, data []byte) []byte {
+func signToken(t *testing.T, key *keys.PrivateKey, data []byte) *handlers.BearerToken {
 	h := sha512.Sum512(data)
 	x, y, err := ecdsa.Sign(rand.Reader, &key.PrivateKey, h[:])
 	require.NoError(t, err)
-	return elliptic.Marshal(elliptic.P256(), x, y)
+	sign := elliptic.Marshal(elliptic.P256(), x, y)
+
+	return &handlers.BearerToken{
+		Token:     base64.StdEncoding.EncodeToString(data),
+		Signature: base64.StdEncoding.EncodeToString(sign),
+		Key:       hex.EncodeToString(key.PublicKey().Bytes()),
+	}
+}
+
+func signTokenWalletConnect(t *testing.T, key *keys.PrivateKey, data []byte) *handlers.BearerToken {
+	sm, err := walletconnect.SignMessage(&key.PrivateKey, data[:])
+	require.NoError(t, err)
+
+	return &handlers.BearerToken{
+		Token:     base64.StdEncoding.EncodeToString(data),
+		Signature: base64.StdEncoding.EncodeToString(append(sm.Data, sm.Salt...)),
+		Key:       hex.EncodeToString(key.PublicKey().Bytes()),
+	}
 }
 
 func restContainerPut(ctx context.Context, t *testing.T, clientPool *pool.Pool) {
@@ -566,6 +627,7 @@ func restContainerPut(ctx context.Context, t *testing.T, clientPool *pool.Pool)
 	require.NoError(t, err)
 	query := reqURL.Query()
 	query.Add("skip-native-name", "true")
+	query.Add(walletConnectQuery, strconv.FormatBool(useWalletConnect))
 	reqURL.RawQuery = query.Encode()
 
 	request, err := http.NewRequest(http.MethodPut, reqURL.String(), bytes.NewReader(body))

gen/restapi/embedded_spec.go

@@ -144,6 +144,9 @@ func init() {
           {
             "$ref": "#/parameters/signatureKeyParam"
           },
+          {
+            "$ref": "#/parameters/signatureScheme"
+          },
           {
             "type": "boolean",
             "default": false,
@@ -236,6 +239,9 @@ func init() {
           },
           {
             "$ref": "#/parameters/signatureKeyParam"
+          },
+          {
+            "$ref": "#/parameters/signatureScheme"
           }
         ],
         "responses": {
@@ -286,6 +292,9 @@ func init() {
           {
             "$ref": "#/parameters/signatureKeyParam"
           },
+          {
+            "$ref": "#/parameters/signatureScheme"
+          },
           {
             "description": "EACL for container",
             "name": "eacl",
@@ -392,6 +401,9 @@ func init() {
         },
         {
           "$ref": "#/parameters/signatureKeyParam"
+        },
+        {
+          "$ref": "#/parameters/signatureScheme"
         }
       ]
     },
@@ -436,6 +448,9 @@ func init() {
         {
           "$ref": "#/parameters/signatureKeyParam"
         },
+        {
+          "$ref": "#/parameters/signatureScheme"
+        },
         {
           "$ref": "#/parameters/containerId"
         },
@@ -841,6 +856,13 @@ func init() {
       "name": "X-Bearer-Signature",
       "in": "header",
       "required": true
+    },
+    "signatureScheme": {
+      "type": "boolean",
+      "default": false,
+      "description": "Use wallect connect signature scheme or not",
+      "name": "walletConnect",
+      "in": "query"
     }
   },
   "securityDefinitions": {
@@ -997,6 +1019,13 @@ func init() {
             "in": "header",
             "required": true
           },
+          {
+            "type": "boolean",
+            "default": false,
+            "description": "Use wallect connect signature scheme or not",
+            "name": "walletConnect",
+            "in": "query"
+          },
           {
             "type": "boolean",
             "default": false,
@@ -1097,6 +1126,13 @@ func init() {
             "name": "X-Bearer-Signature-Key",
             "in": "header",
             "required": true
+          },
+          {
+            "type": "boolean",
+            "default": false,
+            "description": "Use wallect connect signature scheme or not",
+            "name": "walletConnect",
+            "in": "query"
           }
         ],
         "responses": {
@@ -1159,6 +1195,13 @@ func init() {
             "in": "header",
             "required": true
           },
+          {
+            "type": "boolean",
+            "default": false,
+            "description": "Use wallect connect signature scheme or not",
+            "name": "walletConnect",
+            "in": "query"
+          },
           {
             "description": "EACL for container",
             "name": "eacl",
@@ -1277,6 +1320,13 @@ func init() {
           "name": "X-Bearer-Signature-Key",
           "in": "header",
           "required": true
+        },
+        {
+          "type": "boolean",
+          "default": false,
+          "description": "Use wallect connect signature scheme or not",
+          "name": "walletConnect",
+          "in": "query"
         }
       ]
     },
@@ -1329,6 +1379,13 @@ func init() {
           "in": "header",
           "required": true
         },
+        {
+          "type": "boolean",
+          "default": false,
+          "description": "Use wallect connect signature scheme or not",
+          "name": "walletConnect",
+          "in": "query"
+        },
         {
           "type": "string",
           "description": "Base58 encoded container id",
@@ -1742,6 +1799,13 @@ func init() {
       "name": "X-Bearer-Signature",
       "in": "header",
       "required": true
+    },
+    "signatureScheme": {
+      "type": "boolean",
+      "default": false,
+      "description": "Use wallect connect signature scheme or not",
+      "name": "walletConnect",
+      "in": "query"
     }
   },
   "securityDefinitions": {

gen/restapi/operations/delete_container_parameters.go

@@ -9,17 +9,26 @@ import (
 	"net/http"
 
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/runtime"
 	"github.com/go-openapi/runtime/middleware"
 	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // NewDeleteContainerParams creates a new DeleteContainerParams object
-//
+// with the default values initialized.
-// There are no default values defined in the spec.
 func NewDeleteContainerParams() DeleteContainerParams {
 
-	return DeleteContainerParams{}
+	var (
+		// initialize parameters with default values
+
+		walletConnectDefault = bool(false)
+	)
+
+	return DeleteContainerParams{
+		WalletConnect: &walletConnectDefault,
+	}
 }
 
 // DeleteContainerParams contains all the bound params for the delete container operation
@@ -46,6 +55,11 @@ type DeleteContainerParams struct {
 	  In: path
 	*/
 	ContainerID string
+	/*Use wallect connect signature scheme or not
+	  In: query
+	  Default: false
+	*/
+	WalletConnect *bool
 }
 
 // BindRequest both binds and validates a request, it assumes that complex things implement a Validatable(strfmt.Registry) error interface
@@ -57,6 +71,8 @@ func (o *DeleteContainerParams) BindRequest(r *http.Request, route *middleware.M
 
 	o.HTTPRequest = r
 
+	qs := runtime.Values(r.URL.Query())
+
 	if err := o.bindXBearerSignature(r.Header[http.CanonicalHeaderKey("X-Bearer-Signature")], true, route.Formats); err != nil {
 		res = append(res, err)
 	}
@@ -69,6 +85,11 @@ func (o *DeleteContainerParams) BindRequest(r *http.Request, route *middleware.M
 	if err := o.bindContainerID(rContainerID, rhkContainerID, route.Formats); err != nil {
 		res = append(res, err)
 	}
+
+	qWalletConnect, qhkWalletConnect, _ := qs.GetOK("walletConnect")
+	if err := o.bindWalletConnect(qWalletConnect, qhkWalletConnect, route.Formats); err != nil {
+		res = append(res, err)
+	}
 	if len(res) > 0 {
 		return errors.CompositeValidationError(res...)
 	}
@@ -128,3 +149,27 @@ func (o *DeleteContainerParams) bindContainerID(rawData []string, hasKey bool, f
 
 	return nil
 }
+
+// bindWalletConnect binds and validates parameter WalletConnect from query.
+func (o *DeleteContainerParams) bindWalletConnect(rawData []string, hasKey bool, formats strfmt.Registry) error {
+	var raw string
+	if len(rawData) > 0 {
+		raw = rawData[len(rawData)-1]
+	}
+
+	// Required: false
+	// AllowEmptyValue: false
+
+	if raw == "" { // empty values pass all other validations
+		// Default values have been previously initialized by NewDeleteContainerParams()
+		return nil
+	}
+
+	value, err := swag.ConvertBool(raw)
+	if err != nil {
+		return errors.InvalidType("walletConnect", "query", "bool", raw)
+	}
+	o.WalletConnect = &value
+
+	return nil
+}

gen/restapi/operations/delete_object_parameters.go

@@ -9,17 +9,26 @@ import (
 	"net/http"
 
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/runtime"
 	"github.com/go-openapi/runtime/middleware"
 	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // NewDeleteObjectParams creates a new DeleteObjectParams object
-//
+// with the default values initialized.
-// There are no default values defined in the spec.
 func NewDeleteObjectParams() DeleteObjectParams {
 
-	return DeleteObjectParams{}
+	var (
+		// initialize parameters with default values
+
+		walletConnectDefault = bool(false)
+	)
+
+	return DeleteObjectParams{
+		WalletConnect: &walletConnectDefault,
+	}
 }
 
 // DeleteObjectParams contains all the bound params for the delete object operation
@@ -51,6 +60,11 @@ type DeleteObjectParams struct {
 	  In: path
 	*/
 	ObjectID string
+	/*Use wallect connect signature scheme or not
+	  In: query
+	  Default: false
+	*/
+	WalletConnect *bool
 }
 
 // BindRequest both binds and validates a request, it assumes that complex things implement a Validatable(strfmt.Registry) error interface
@@ -62,6 +76,8 @@ func (o *DeleteObjectParams) BindRequest(r *http.Request, route *middleware.Matc
 
 	o.HTTPRequest = r
 
+	qs := runtime.Values(r.URL.Query())
+
 	if err := o.bindXBearerSignature(r.Header[http.CanonicalHeaderKey("X-Bearer-Signature")], true, route.Formats); err != nil {
 		res = append(res, err)
 	}
@@ -79,6 +95,11 @@ func (o *DeleteObjectParams) BindRequest(r *http.Request, route *middleware.Matc
 	if err := o.bindObjectID(rObjectID, rhkObjectID, route.Formats); err != nil {
 		res = append(res, err)
 	}
+
+	qWalletConnect, qhkWalletConnect, _ := qs.GetOK("walletConnect")
+	if err := o.bindWalletConnect(qWalletConnect, qhkWalletConnect, route.Formats); err != nil {
+		res = append(res, err)
+	}
 	if len(res) > 0 {
 		return errors.CompositeValidationError(res...)
 	}
@@ -152,3 +173,27 @@ func (o *DeleteObjectParams) bindObjectID(rawData []string, hasKey bool, formats
 
 	return nil
 }
+
+// bindWalletConnect binds and validates parameter WalletConnect from query.
+func (o *DeleteObjectParams) bindWalletConnect(rawData []string, hasKey bool, formats strfmt.Registry) error {
+	var raw string
+	if len(rawData) > 0 {
+		raw = rawData[len(rawData)-1]
+	}
+
+	// Required: false
+	// AllowEmptyValue: false
+
+	if raw == "" { // empty values pass all other validations
+		// Default values have been previously initialized by NewDeleteObjectParams()
+		return nil
+	}
+
+	value, err := swag.ConvertBool(raw)
+	if err != nil {
+		return errors.InvalidType("walletConnect", "query", "bool", raw)
+	}
+	o.WalletConnect = &value
+
+	return nil
+}

gen/restapi/operations/get_object_info_parameters.go

@@ -9,17 +9,26 @@ import (
 	"net/http"
 
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/runtime"
 	"github.com/go-openapi/runtime/middleware"
 	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // NewGetObjectInfoParams creates a new GetObjectInfoParams object
-//
+// with the default values initialized.
-// There are no default values defined in the spec.
 func NewGetObjectInfoParams() GetObjectInfoParams {
 
-	return GetObjectInfoParams{}
+	var (
+		// initialize parameters with default values
+
+		walletConnectDefault = bool(false)
+	)
+
+	return GetObjectInfoParams{
+		WalletConnect: &walletConnectDefault,
+	}
 }
 
 // GetObjectInfoParams contains all the bound params for the get object info operation
@@ -51,6 +60,11 @@ type GetObjectInfoParams struct {
 	  In: path
 	*/
 	ObjectID string
+	/*Use wallect connect signature scheme or not
+	  In: query
+	  Default: false
+	*/
+	WalletConnect *bool
 }
 
 // BindRequest both binds and validates a request, it assumes that complex things implement a Validatable(strfmt.Registry) error interface
@@ -62,6 +76,8 @@ func (o *GetObjectInfoParams) BindRequest(r *http.Request, route *middleware.Mat
 
 	o.HTTPRequest = r
 
+	qs := runtime.Values(r.URL.Query())
+
 	if err := o.bindXBearerSignature(r.Header[http.CanonicalHeaderKey("X-Bearer-Signature")], true, route.Formats); err != nil {
 		res = append(res, err)
 	}
@@ -79,6 +95,11 @@ func (o *GetObjectInfoParams) BindRequest(r *http.Request, route *middleware.Mat
 	if err := o.bindObjectID(rObjectID, rhkObjectID, route.Formats); err != nil {
 		res = append(res, err)
 	}
+
+	qWalletConnect, qhkWalletConnect, _ := qs.GetOK("walletConnect")
+	if err := o.bindWalletConnect(qWalletConnect, qhkWalletConnect, route.Formats); err != nil {
+		res = append(res, err)
+	}
 	if len(res) > 0 {
 		return errors.CompositeValidationError(res...)
 	}
@@ -152,3 +173,27 @@ func (o *GetObjectInfoParams) bindObjectID(rawData []string, hasKey bool, format
 
 	return nil
 }
+
+// bindWalletConnect binds and validates parameter WalletConnect from query.
+func (o *GetObjectInfoParams) bindWalletConnect(rawData []string, hasKey bool, formats strfmt.Registry) error {
+	var raw string
+	if len(rawData) > 0 {
+		raw = rawData[len(rawData)-1]
+	}
+
+	// Required: false
+	// AllowEmptyValue: false
+
+	if raw == "" { // empty values pass all other validations
+		// Default values have been previously initialized by NewGetObjectInfoParams()
+		return nil
+	}
+
+	value, err := swag.ConvertBool(raw)
+	if err != nil {
+		return errors.InvalidType("walletConnect", "query", "bool", raw)
+	}
+	o.WalletConnect = &value
+
+	return nil
+}

gen/restapi/operations/put_container_e_acl_parameters.go

@@ -14,17 +14,25 @@ import (
 	"github.com/go-openapi/runtime"
 	"github.com/go-openapi/runtime/middleware"
 	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 
 	"github.com/nspcc-dev/neofs-rest-gw/gen/models"
 )
 
 // NewPutContainerEACLParams creates a new PutContainerEACLParams object
-//
+// with the default values initialized.
-// There are no default values defined in the spec.
 func NewPutContainerEACLParams() PutContainerEACLParams {
 
-	return PutContainerEACLParams{}
+	var (
+		// initialize parameters with default values
+
+		walletConnectDefault = bool(false)
+	)
+
+	return PutContainerEACLParams{
+		WalletConnect: &walletConnectDefault,
+	}
 }
 
 // PutContainerEACLParams contains all the bound params for the put container e ACL operation
@@ -56,6 +64,11 @@ type PutContainerEACLParams struct {
 	  In: body
 	*/
 	Eacl *models.Eacl
+	/*Use wallect connect signature scheme or not
+	  In: query
+	  Default: false
+	*/
+	WalletConnect *bool
 }
 
 // BindRequest both binds and validates a request, it assumes that complex things implement a Validatable(strfmt.Registry) error interface
@@ -67,6 +80,8 @@ func (o *PutContainerEACLParams) BindRequest(r *http.Request, route *middleware.
 
 	o.HTTPRequest = r
 
+	qs := runtime.Values(r.URL.Query())
+
 	if err := o.bindXBearerSignature(r.Header[http.CanonicalHeaderKey("X-Bearer-Signature")], true, route.Formats); err != nil {
 		res = append(res, err)
 	}
@@ -107,6 +122,11 @@ func (o *PutContainerEACLParams) BindRequest(r *http.Request, route *middleware.
 	} else {
 		res = append(res, errors.Required("eacl", "body", ""))
 	}
+
+	qWalletConnect, qhkWalletConnect, _ := qs.GetOK("walletConnect")
+	if err := o.bindWalletConnect(qWalletConnect, qhkWalletConnect, route.Formats); err != nil {
+		res = append(res, err)
+	}
 	if len(res) > 0 {
 		return errors.CompositeValidationError(res...)
 	}
@@ -166,3 +186,27 @@ func (o *PutContainerEACLParams) bindContainerID(rawData []string, hasKey bool,
 
 	return nil
 }
+
+// bindWalletConnect binds and validates parameter WalletConnect from query.
+func (o *PutContainerEACLParams) bindWalletConnect(rawData []string, hasKey bool, formats strfmt.Registry) error {
+	var raw string
+	if len(rawData) > 0 {
+		raw = rawData[len(rawData)-1]
+	}
+
+	// Required: false
+	// AllowEmptyValue: false
+
+	if raw == "" { // empty values pass all other validations
+		// Default values have been previously initialized by NewPutContainerEACLParams()
+		return nil
+	}
+
+	value, err := swag.ConvertBool(raw)
+	if err != nil {
+		return errors.InvalidType("walletConnect", "query", "bool", raw)
+	}
+	o.WalletConnect = &value
+
+	return nil
+}

gen/restapi/operations/put_container_parameters.go

@@ -26,10 +26,13 @@ func NewPutContainerParams() PutContainerParams {
 		// initialize parameters with default values
 
 		skipNativeNameDefault = bool(false)
+		walletConnectDefault  = bool(false)
 	)
 
 	return PutContainerParams{
 		SkipNativeName: &skipNativeNameDefault,
+
+		WalletConnect: &walletConnectDefault,
 	}
 }
 
@@ -62,6 +65,11 @@ type PutContainerParams struct {
 	  Default: false
 	*/
 	SkipNativeName *bool
+	/*Use wallect connect signature scheme or not
+	  In: query
+	  Default: false
+	*/
+	WalletConnect *bool
 }
 
 // BindRequest both binds and validates a request, it assumes that complex things implement a Validatable(strfmt.Registry) error interface
@@ -115,6 +123,11 @@ func (o *PutContainerParams) BindRequest(r *http.Request, route *middleware.Matc
 	if err := o.bindSkipNativeName(qSkipNativeName, qhkSkipNativeName, route.Formats); err != nil {
 		res = append(res, err)
 	}
+
+	qWalletConnect, qhkWalletConnect, _ := qs.GetOK("walletConnect")
+	if err := o.bindWalletConnect(qWalletConnect, qhkWalletConnect, route.Formats); err != nil {
+		res = append(res, err)
+	}
 	if len(res) > 0 {
 		return errors.CompositeValidationError(res...)
 	}
@@ -184,3 +197,27 @@ func (o *PutContainerParams) bindSkipNativeName(rawData []string, hasKey bool, f
 
 	return nil
 }
+
+// bindWalletConnect binds and validates parameter WalletConnect from query.
+func (o *PutContainerParams) bindWalletConnect(rawData []string, hasKey bool, formats strfmt.Registry) error {
+	var raw string
+	if len(rawData) > 0 {
+		raw = rawData[len(rawData)-1]
+	}
+
+	// Required: false
+	// AllowEmptyValue: false
+
+	if raw == "" { // empty values pass all other validations
+		// Default values have been previously initialized by NewPutContainerParams()
+		return nil
+	}
+
+	value, err := swag.ConvertBool(raw)
+	if err != nil {
+		return errors.InvalidType("walletConnect", "query", "bool", raw)
+	}
+	o.WalletConnect = &value
+
+	return nil
+}

gen/restapi/operations/put_object_parameters.go

@@ -14,15 +14,23 @@ import (
 	"github.com/go-openapi/runtime"
 	"github.com/go-openapi/runtime/middleware"
 	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // NewPutObjectParams creates a new PutObjectParams object
-//
+// with the default values initialized.
-// There are no default values defined in the spec.
 func NewPutObjectParams() PutObjectParams {
 
-	return PutObjectParams{}
+	var (
+		// initialize parameters with default values
+
+		walletConnectDefault = bool(false)
+	)
+
+	return PutObjectParams{
+		WalletConnect: &walletConnectDefault,
+	}
 }
 
 // PutObjectParams contains all the bound params for the put object operation
@@ -49,6 +57,11 @@ type PutObjectParams struct {
 	  In: body
 	*/
 	Object PutObjectBody
+	/*Use wallect connect signature scheme or not
+	  In: query
+	  Default: false
+	*/
+	WalletConnect *bool
 }
 
 // BindRequest both binds and validates a request, it assumes that complex things implement a Validatable(strfmt.Registry) error interface
@@ -60,6 +73,8 @@ func (o *PutObjectParams) BindRequest(r *http.Request, route *middleware.Matched
 
 	o.HTTPRequest = r
 
+	qs := runtime.Values(r.URL.Query())
+
 	if err := o.bindXBearerSignature(r.Header[http.CanonicalHeaderKey("X-Bearer-Signature")], true, route.Formats); err != nil {
 		res = append(res, err)
 	}
@@ -95,6 +110,11 @@ func (o *PutObjectParams) BindRequest(r *http.Request, route *middleware.Matched
 	} else {
 		res = append(res, errors.Required("object", "body", ""))
 	}
+
+	qWalletConnect, qhkWalletConnect, _ := qs.GetOK("walletConnect")
+	if err := o.bindWalletConnect(qWalletConnect, qhkWalletConnect, route.Formats); err != nil {
+		res = append(res, err)
+	}
 	if len(res) > 0 {
 		return errors.CompositeValidationError(res...)
 	}
@@ -140,3 +160,27 @@ func (o *PutObjectParams) bindXBearerSignatureKey(rawData []string, hasKey bool,
 
 	return nil
 }
+
+// bindWalletConnect binds and validates parameter WalletConnect from query.
+func (o *PutObjectParams) bindWalletConnect(rawData []string, hasKey bool, formats strfmt.Registry) error {
+	var raw string
+	if len(rawData) > 0 {
+		raw = rawData[len(rawData)-1]
+	}
+
+	// Required: false
+	// AllowEmptyValue: false
+
+	if raw == "" { // empty values pass all other validations
+		// Default values have been previously initialized by NewPutObjectParams()
+		return nil
+	}
+
+	value, err := swag.ConvertBool(raw)
+	if err != nil {
+		return errors.InvalidType("walletConnect", "query", "bool", raw)
+	}
+	o.WalletConnect = &value
+
+	return nil
+}

go.mod

@@ -64,7 +64,7 @@ require (
 	github.com/morikuni/aec v0.0.0-20170113033406-39771216ff4c // indirect
 	github.com/mr-tron/base58 v1.2.0 // indirect
 	github.com/nspcc-dev/hrw v1.0.9 // indirect
-	github.com/nspcc-dev/neofs-crypto v0.3.0 // indirect
+	github.com/nspcc-dev/neofs-crypto v0.3.0
 	github.com/nspcc-dev/rfc6979 v0.2.0 // indirect
 	github.com/oklog/ulid v1.3.1 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect

handlers/containers.go

@@ -2,8 +2,10 @@ package handlers
 
 import (
 	"context"
+	"crypto/ecdsa"
 	"encoding/base64"
 	"fmt"
+	walletconnect "github.com/nspcc-dev/neofs-rest-gw/wallet-connect"
 	"net/http"
 	"strconv"
 	"strings"
@@ -37,7 +39,7 @@ func (a *API) PutContainers(params operations.PutContainerParams, principal *mod
 		Signature: params.XBearerSignature,
 		Key:       params.XBearerSignatureKey,
 	}
-	stoken, err := prepareSessionToken(bt)
+	stoken, err := prepareSessionToken(bt, *params.WalletConnect)
 	if err != nil {
 		return wrapError(err)
 	}
@@ -95,7 +97,7 @@ func (a *API) PutContainerEACL(params operations.PutContainerEACLParams, princip
 		Signature: params.XBearerSignature,
 		Key:       params.XBearerSignatureKey,
 	}
-	stoken, err := prepareSessionToken(bt)
+	stoken, err := prepareSessionToken(bt, *params.WalletConnect)
 	if err != nil {
 		return wrapError(err)
 	}
@@ -183,7 +185,7 @@ func (a *API) DeleteContainer(params operations.DeleteContainerParams, principal
 		Signature: params.XBearerSignature,
 		Key:       params.XBearerSignatureKey,
 	}
-	stoken, err := prepareSessionToken(bt)
+	stoken, err := prepareSessionToken(bt, *params.WalletConnect)
 	if err != nil {
 		a.log.Error("failed parse session token", zap.Error(err))
 		return operations.NewDeleteContainerBadRequest().WithPayload(NewError(err))
@@ -344,10 +346,10 @@ func createContainer(ctx context.Context, p *pool.Pool, stoken *session.Token, p
 	return cnrID, nil
 }
 
-func prepareSessionToken(bt *BearerToken) (*session.Token, error) {
+func prepareSessionToken(bt *BearerToken, isWalletConnect bool) (*session.Token, error) {
-	stoken, err := GetSessionToken(bt.Token)
+	data, err := base64.StdEncoding.DecodeString(bt.Token)
 	if err != nil {
-		return nil, fmt.Errorf("could not fetch session token: %w", err)
+		return nil, fmt.Errorf("can't base64-decode bearer token: %w", err)
 	}
 
 	signature, err := base64.StdEncoding.DecodeString(bt.Signature)
@@ -360,34 +362,32 @@ func prepareSessionToken(bt *BearerToken) (*session.Token, error) {
 		return nil, fmt.Errorf("couldn't fetch bearer token owner key: %w", err)
 	}
 
-	v2signature := new(refs.Signature)
-	v2signature.SetScheme(refs.ECDSA_SHA512)
-	v2signature.SetSign(signature)
-	v2signature.SetKey(ownerKey.Bytes())
-	stoken.ToV2().SetSignature(v2signature)
-
-	if !stoken.VerifySignature() {
-		err = fmt.Errorf("invalid signature")
-	}
-
-	return stoken, err
-}
-
-func GetSessionToken(auth string) (*session.Token, error) {
-	data, err := base64.StdEncoding.DecodeString(auth)
-	if err != nil {
-		return nil, fmt.Errorf("can't base64-decode bearer token: %w", err)
-	}
-
 	body := new(sessionv2.TokenBody)
 	if err = body.Unmarshal(data); err != nil {
 		return nil, fmt.Errorf("can't unmarshal bearer token: %w", err)
 	}
 
-	tkn := new(session.Token)
+	stoken := new(session.Token)
-	tkn.ToV2().SetBody(body)
+	stoken.ToV2().SetBody(body)
 
-	return tkn, nil
+	v2signature := new(refs.Signature)
+	v2signature.SetScheme(refs.ECDSA_SHA512)
+	if isWalletConnect {
+		v2signature.SetScheme(2)
+	}
+	v2signature.SetSign(signature)
+	v2signature.SetKey(ownerKey.Bytes())
+	stoken.ToV2().SetSignature(v2signature)
+
+	if isWalletConnect {
+		if !walletconnect.Verify((*ecdsa.PublicKey)(ownerKey), data, signature) {
+			return nil, fmt.Errorf("invalid signature")
+		}
+	} else if !stoken.VerifySignature() {
+		return nil, fmt.Errorf("invalid signature")
+	}
+
+	return stoken, err
 }
 
 func wrapError(err error) middleware.Responder {

handlers/objects.go

@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"crypto/ecdsa"
 	"encoding/base64"
 	"fmt"
 
@@ -10,6 +11,7 @@ import (
 	"github.com/nspcc-dev/neofs-api-go/v2/refs"
 	"github.com/nspcc-dev/neofs-rest-gw/gen/models"
 	"github.com/nspcc-dev/neofs-rest-gw/gen/restapi/operations"
+	walletconnect "github.com/nspcc-dev/neofs-rest-gw/wallet-connect"
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
 	"github.com/nspcc-dev/neofs-sdk-go/object"
 	"github.com/nspcc-dev/neofs-sdk-go/object/address"
@@ -24,7 +26,7 @@ func (a *API) PutObjects(params operations.PutObjectParams, principal *models.Pr
 	errorResponse := operations.NewPutObjectBadRequest()
 	ctx := params.HTTPRequest.Context()
 
-	btoken, err := getBearerToken(principal, params.XBearerSignature, params.XBearerSignatureKey)
+	btoken, err := getBearerToken(principal, params.XBearerSignature, params.XBearerSignatureKey, *params.WalletConnect)
 	if err != nil {
 		return errorResponse.WithPayload(models.Error(err.Error()))
 	}
@@ -61,6 +63,7 @@ func (a *API) PutObjects(params operations.PutObjectParams, principal *models.Pr
 
 	objID, err := a.pool.PutObject(ctx, prmPut)
 	if err != nil {
+		a.log.Error("put object", zap.Error(err))
 		return errorResponse.WithPayload(NewError(err))
 	}
 
@@ -82,7 +85,7 @@ func (a *API) GetObjectInfo(params operations.GetObjectInfoParams, principal *mo
 		return errorResponse.WithPayload("invalid address")
 	}
 
-	btoken, err := getBearerToken(principal, params.XBearerSignature, params.XBearerSignatureKey)
+	btoken, err := getBearerToken(principal, params.XBearerSignature, params.XBearerSignatureKey, *params.WalletConnect)
 	if err != nil {
 		return errorResponse.WithPayload(NewError(err))
 	}
@@ -123,7 +126,7 @@ func (a *API) DeleteObject(params operations.DeleteObjectParams, principal *mode
 		return errorResponse.WithPayload("invalid address")
 	}
 
-	btoken, err := getBearerToken(principal, params.XBearerSignature, params.XBearerSignatureKey)
+	btoken, err := getBearerToken(principal, params.XBearerSignature, params.XBearerSignatureKey, *params.WalletConnect)
 	if err != nil {
 		a.log.Error("failed to get bearer token", zap.Error(err))
 		return errorResponse.WithPayload(NewError(err))
@@ -158,20 +161,20 @@ func parseAddress(containerID, objectID string) (*address.Address, error) {
 	return addr, nil
 }
 
-func getBearerToken(token *models.Principal, signature, key string) (*token.BearerToken, error) {
+func getBearerToken(token *models.Principal, signature, key string, isWalletConnect bool) (*token.BearerToken, error) {
 	bt := &BearerToken{
 		Token:     string(*token),
 		Signature: signature,
 		Key:       key,
 	}
 
-	return prepareBearerToken(bt)
+	return prepareBearerToken(bt, isWalletConnect)
 }
 
-func prepareBearerToken(bt *BearerToken) (*token.BearerToken, error) {
+func prepareBearerToken(bt *BearerToken, isWalletConnect bool) (*token.BearerToken, error) {
-	btoken, err := parseBearerToken(bt.Token)
+	data, err := base64.StdEncoding.DecodeString(bt.Token)
 	if err != nil {
-		return nil, fmt.Errorf("could not fetch bearer token: %w", err)
+		return nil, fmt.Errorf("can't base64-decode bearer token: %w", err)
 	}
 
 	signature, err := base64.StdEncoding.DecodeString(bt.Signature)
@@ -184,28 +187,30 @@ func prepareBearerToken(bt *BearerToken) (*token.BearerToken, error) {
 		return nil, fmt.Errorf("couldn't fetch bearer token owner key: %w", err)
 	}
 
-	v2signature := new(refs.Signature)
-	v2signature.SetScheme(refs.ECDSA_SHA512)
-	v2signature.SetSign(signature)
-	v2signature.SetKey(ownerKey.Bytes())
-	btoken.ToV2().SetSignature(v2signature)
-
-	return btoken, btoken.VerifySignature()
-}
-
-func parseBearerToken(auth string) (*token.BearerToken, error) {
-	data, err := base64.StdEncoding.DecodeString(auth)
-	if err != nil {
-		return nil, fmt.Errorf("can't base64-decode bearer token: %w", err)
-	}
-
 	body := new(acl.BearerTokenBody)
 	if err = body.Unmarshal(data); err != nil {
 		return nil, fmt.Errorf("can't unmarshal bearer token: %w", err)
 	}
 
-	tkn := new(token.BearerToken)
+	btoken := new(token.BearerToken)
-	tkn.ToV2().SetBody(body)
+	btoken.ToV2().SetBody(body)
 
-	return tkn, nil
+	v2signature := new(refs.Signature)
+	v2signature.SetScheme(refs.ECDSA_SHA512)
+	if isWalletConnect {
+		v2signature.SetScheme(2)
+	}
+	v2signature.SetSign(signature)
+	v2signature.SetKey(ownerKey.Bytes())
+	btoken.ToV2().SetSignature(v2signature)
+
+	if isWalletConnect {
+		if !walletconnect.Verify((*ecdsa.PublicKey)(ownerKey), data, signature) {
+			return nil, fmt.Errorf("invalid signature")
+		}
+	} else if err = btoken.VerifySignature(); err != nil {
+		return nil, fmt.Errorf("invalid signature")
+	}
+
+	return btoken, nil
 }

spec/rest.yaml

@@ -33,6 +33,12 @@ parameters:
     description: Hex encoded the public part of the key that signed the bearer token
     type: string
     required: true
+  signatureScheme:
+    in: query
+    name: walletConnect
+    description: Use wallect connect signature scheme or not
+    type: boolean
+    default: false
   containerId:
     in: path
     name: containerId
@@ -91,6 +97,7 @@ paths:
     parameters:
       - $ref: '#/parameters/signatureParam'
       - $ref: '#/parameters/signatureKeyParam'
+      - $ref: '#/parameters/signatureScheme'
     put:
       operationId: putObject
       summary: Upload object to NeoFS
@@ -144,6 +151,7 @@ paths:
     parameters:
       - $ref: '#/parameters/signatureParam'
       - $ref: '#/parameters/signatureKeyParam'
+      - $ref: '#/parameters/signatureScheme'
       - $ref: '#/parameters/containerId'
       - $ref: '#/parameters/objectId'
     get:
@@ -176,6 +184,7 @@ paths:
       parameters:
         - $ref: '#/parameters/signatureParam'
         - $ref: '#/parameters/signatureKeyParam'
+        - $ref: '#/parameters/signatureScheme'
         - in: query
           name: skip-native-name
           description: Provide this parameter to skip registration container name in NNS service
@@ -271,6 +280,7 @@ paths:
       parameters:
         - $ref: '#/parameters/signatureParam'
         - $ref: '#/parameters/signatureKeyParam'
+        - $ref: '#/parameters/signatureScheme'
       responses:
         204:
           description: Successul deletion
@@ -287,6 +297,7 @@ paths:
       parameters:
         - $ref: '#/parameters/signatureParam'
         - $ref: '#/parameters/signatureKeyParam'
+        - $ref: '#/parameters/signatureScheme'
         - in: body
           name: eacl
           required: true

wallet-connect/wallet_connect.go

@@ -0,0 +1,149 @@
+package walletconnect
+
+import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"encoding/binary"
+	"encoding/hex"
+
+	crypto "github.com/nspcc-dev/neofs-crypto"
+)
+
+const (
+	// saltSize is the salt size added to signed message.
+	saltSize = 16
+	// signatureLen is the length of RFC6979 signature.
+	signatureLen = 64
+)
+
+// SignedMessage contains mirrors `SignedMessage` struct from the WalletConnect API.
+// https://neon.coz.io/wksdk/core/modules.html#SignedMessage
+type SignedMessage struct {
+	Data      []byte
+	Message   []byte
+	PublicKey []byte
+	Salt      []byte
+}
+
+// Sign signs message using WalletConnect API. The returned signature
+// contains RFC6979 signature and 16-byte salt.
+func Sign(p *ecdsa.PrivateKey, msg []byte) ([]byte, error) {
+	sm, err := SignMessage(p, msg)
+	if err != nil {
+		return nil, err
+	}
+	return append(sm.Data, sm.Salt...), nil
+}
+
+// Verify verifies message using WalletConnect API. The returned signature
+// contains RFC6979 signature and 16-byte salt.
+func Verify(p *ecdsa.PublicKey, data, sign []byte) bool {
+	if len(sign) != signatureLen+saltSize {
+		return false
+	}
+
+	salt := sign[signatureLen:]
+	return VerifyMessage(p, SignedMessage{
+		Data:    sign[:signatureLen],
+		Message: createMessageWithSalt(data, salt),
+		Salt:    salt,
+	})
+}
+
+// SignMessage signs message with a private key and returns structure similar to
+// `signMessage` of the WalletConnect API.
+// https://github.com/CityOfZion/wallet-connect-sdk/blob/89c236b/packages/wallet-connect-sdk-core/src/index.ts#L496
+// https://github.com/CityOfZion/neon-wallet/blob/1174a9388480e6bbc4f79eb13183c2a573f67ca8/app/context/WalletConnect/helpers.js#L133
+func SignMessage(p *ecdsa.PrivateKey, msg []byte) (SignedMessage, error) {
+	var salt [saltSize]byte
+	_, _ = rand.Read(salt[:])
+
+	msg = createMessageWithSalt(msg, salt[:])
+	sign, err := crypto.SignRFC6979(p, msg)
+	if err != nil {
+		return SignedMessage{}, err
+	}
+
+	return SignedMessage{
+		Data:      sign,
+		Message:   msg,
+		PublicKey: elliptic.MarshalCompressed(p.Curve, p.X, p.Y),
+		Salt:      salt[:],
+	}, nil
+}
+
+// VerifyMessage verifies message with a private key and returns structure similar to
+// `verifyMessage` of WalletConnect API.
+// https://github.com/CityOfZion/wallet-connect-sdk/blob/89c236b/packages/wallet-connect-sdk-core/src/index.ts#L515
+// https://github.com/CityOfZion/neon-wallet/blob/1174a9388480e6bbc4f79eb13183c2a573f67ca8/app/context/WalletConnect/helpers.js#L147
+func VerifyMessage(p *ecdsa.PublicKey, m SignedMessage) bool {
+	if p == nil {
+		x, y := elliptic.UnmarshalCompressed(elliptic.P256(), m.PublicKey)
+		if x == nil || y == nil {
+			return false
+		}
+		p = &ecdsa.PublicKey{
+			Curve: elliptic.P256(),
+			X:     x,
+			Y:     y,
+		}
+	}
+	return crypto.VerifyRFC6979(p, m.Message, m.Data) == nil
+}
+
+func createMessageWithSalt(msg, salt []byte) []byte {
+	// 4 byte prefix + length of the message with salt in bytes +
+	// + salt + message + 2 byte postfix.
+	saltedLen := len(salt)*2 + len(msg)
+	data := make([]byte, 4+getVarIntSize(saltedLen)+saltedLen+2)
+
+	n := copy(data, []byte{0x01, 0x00, 0x01, 0xf0}) // fixed prefix
+	n += putVarUint(data[n:], uint64(len(salt)+len(msg)))
+	n += hex.Encode(data[n:], salt[:]) // for some reason we encode salt in hex
+	n += copy(data[n:], msg)
+	copy(data[n:], []byte{0x00, 0x00})
+
+	return data
+}
+
+// Following functions are copied from github.com/nspcc-dev/neo-go/pkg/io package
+// to avoid having another dependency.
+
+// getVarIntSize returns the size in number of bytes of a variable integer.
+// (reference: GetVarSize(int value),  https://github.com/neo-project/neo/blob/master/neo/IO/Helper.cs)
+func getVarIntSize(value int) int {
+	var size uintptr
+
+	if value < 0xFD {
+		size = 1 // unit8
+	} else if value <= 0xFFFF {
+		size = 3 // byte + uint16
+	} else {
+		size = 5 // byte + uint32
+	}
+	return int(size)
+}
+
+// putVarUint puts val in varint form to the pre-allocated buffer.
+func putVarUint(data []byte, val uint64) int {
+	_ = data[8]
+	if val < 0xfd {
+		data[0] = byte(val)
+		return 1
+	}
+	if val < 0xFFFF {
+		data[0] = byte(0xfd)
+		binary.LittleEndian.PutUint16(data[1:], uint16(val))
+		return 3
+	}
+	if val < 0xFFFFFFFF {
+		data[0] = byte(0xfe)
+		binary.LittleEndian.PutUint32(data[1:], uint32(val))
+		return 5
+	}
+
+	data[0] = byte(0xff)
+	binary.LittleEndian.PutUint64(data[1:], val)
+	return 9
+}

wallet-connect/wallet_connect_test.go

@@ -0,0 +1,50 @@
+package walletconnect
+
+import (
+	"crypto/ecdsa"
+	"encoding/hex"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neofs-rest-gw/gen/models"
+	"github.com/nspcc-dev/neofs-rest-gw/handlers"
+	"github.com/nspcc-dev/neofs-sdk-go/owner"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+const devenvPrivateKey = "1dd37fba80fec4e6a6f13fd708d8dcb3b29def768017052f6c930fa1c5d90bbb"
+
+func TestSign(t *testing.T) {
+	key, err := keys.NewPrivateKeyFromHex(devenvPrivateKey)
+	require.NoError(t, err)
+
+	pubKeyHex := hex.EncodeToString(key.PublicKey().Bytes())
+
+	b := &models.Bearer{
+		Object: []*models.Record{{
+			Operation: models.NewOperation(models.OperationPUT),
+			Action:    models.NewAction(models.ActionALLOW),
+			Filters:   []*models.Filter{},
+			Targets: []*models.Target{{
+				Role: models.NewRole(models.RoleOTHERS),
+				Keys: []string{},
+			}},
+		}},
+	}
+
+	btoken, err := handlers.ToNativeObjectToken(b)
+	require.NoError(t, err)
+
+	ownerKey, err := keys.NewPublicKeyFromString(pubKeyHex)
+	require.NoError(t, err)
+
+	btoken.SetOwner(owner.NewIDFromPublicKey((*ecdsa.PublicKey)(ownerKey)))
+
+	binaryBearer, err := btoken.ToV2().GetBody().StableMarshal(nil)
+	require.NoError(t, err)
+
+	sm, err := SignMessage(&key.PrivateKey, binaryBearer)
+	require.NoError(t, err)
+
+	verified := Verify((*ecdsa.PublicKey)(key.PublicKey()), binaryBearer, append(sm.Data, sm.Salt...))
+	require.True(t, verified)
+}