RPC calls signdata and checksignature

rpc/wallet_rpc.go

@@ -293,3 +293,26 @@ type (
 		Entry Entry `json:"entry,omitempty"`
 	}
 )
+
+// Sign data
+type (
+	Sign_Data struct {
+		Data  string `json:"data"`
+		Plain bool   `json:"plain"`
+	}
+	Sign_Data_Result struct {
+		SignedData string `json:"signed_data"`
+	}
+)
+
+// Check signature
+type (
+	Check_Signature struct {
+		Data  string `json:"data"`
+		Plain bool   `json:"plain"`
+	}
+	Check_Signature_Result struct {
+		Signer  string `json:"signer"`
+		Message string `json:"message"`
+	}
+)

walletapi/rpcserver/rpc_check_signature.go

@@ -0,0 +1,58 @@
+// Copyright 2017-2021 DERO Project. All rights reserved.
+// Use of this source code in any form is governed by RESEARCH license.
+// license can be found in the LICENSE file.
+// GPG: 0F39 E425 8C65 3947 702A  8234 08B2 0360 A03A 9DE8
+//
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package rpcserver
+
+import (
+	"context"
+	"encoding/hex"
+	"fmt"
+	"runtime/debug"
+
+	"github.com/deroproject/derohe/rpc"
+)
+
+func CheckSignature(ctx context.Context, p rpc.Check_Signature) (result rpc.Check_Signature_Result, err error) {
+	defer func() { // safety so if anything wrong happens, we return error
+		if r := recover(); r != nil {
+			err = fmt.Errorf("panic occured. stack trace %s", debug.Stack())
+		}
+	}()
+
+	if p.Data == "" {
+		return result, fmt.Errorf("Data field is empty")
+	}
+
+	decData, err := hex.DecodeString(p.Data)
+	if err != nil {
+		return result, fmt.Errorf("Error parsing data err %s", err)
+	}
+	length := len(decData)
+
+	w := fromContext(ctx)
+	signer, message, err := w.wallet.CheckSignature(decData[:length])
+	if err != nil {
+		return result, fmt.Errorf("Error checking signature err %s", err)
+	}
+	if p.Plain {
+		result.Message = string(message[:])
+	} else {
+		result.Message = hex.EncodeToString(message[:])
+	}
+	result.Signer = signer.String()
+
+	return result, nil
+}

walletapi/rpcserver/rpc_sign_data.go

@@ -0,0 +1,57 @@
+// Copyright 2017-2021 DERO Project. All rights reserved.
+// Use of this source code in any form is governed by RESEARCH license.
+// license can be found in the LICENSE file.
+// GPG: 0F39 E425 8C65 3947 702A  8234 08B2 0360 A03A 9DE8
+//
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package rpcserver
+
+import (
+	"context"
+	"encoding/hex"
+	"fmt"
+	"runtime/debug"
+
+	"github.com/deroproject/derohe/rpc"
+)
+
+func SignData(ctx context.Context, p rpc.Sign_Data) (result rpc.Sign_Data_Result, err error) {
+	defer func() { // safety so if anything wrong happens, we return error
+		if r := recover(); r != nil {
+			err = fmt.Errorf("panic occured. stack trace %s", debug.Stack())
+		}
+	}()
+
+	if p.Data == "" {
+		return result, fmt.Errorf("Data field is empty")
+	}
+
+	var decData []byte
+
+	if p.Plain {
+		decData = []byte(p.Data)
+	} else {
+		decData, err = hex.DecodeString(p.Data)
+	}
+
+	if err != nil {
+		return result, fmt.Errorf("Error parsing data err %s", err)
+	}
+	length := len(decData)
+
+	w := fromContext(ctx)
+	output := w.wallet.SignData(decData[:length])
+	result.SignedData = hex.EncodeToString(output[:])
+
+	return result, nil
+}

walletapi/rpcserver/rpc_websocket_server.go

@@ -319,6 +319,10 @@ var wallet_handler = handler.Map{
 	"Transfer":                 handler.New(Transfer),
 	"transfer_split":           handler.New(Transfer),
 	"scinvoke":                 handler.New(ScInvoke),
+	"signdata":                 handler.New(SignData),
+	"SignData":                 handler.New(SignData),
+	"checksignature":           handler.New(CheckSignature),
+	"CheckSignature":           handler.New(CheckSignature),
 }
 
 var servicemux = handler.ServiceMap{