test signer

api/utils/lightning.ts

@@ -361,7 +361,7 @@ async function checkConnection(){
 	return new Promise((resolve,reject)=>{
 		const lightning = loadLightning()
 		lightning.getInfo({}, function(err, response) {
-			if (err == null) {	
+			if (err == null) {
 				resolve(response)
 			} else {
 				reject(err)

api/utils/signer.ts

@@ -0,0 +1,114 @@
+
+import * as grpc from 'grpc'
+import {loadCredentials} from './lightning'
+import * as path from 'path'
+import * as ByteBuffer from 'bytebuffer'
+
+// var protoLoader = require('@grpc/proto-loader')
+const env = process.env.NODE_ENV || 'development';
+const config = require(path.join(__dirname,'../../config/app.json'))[env]
+
+var signerClient = <any> null;
+
+export const loadSigner = () => {
+  console.log("LOAD SIGNER RRRRRR",signerClient?true:false)
+  if (signerClient) {
+    return signerClient
+  } else {
+    console.log("LOAD SIGNER AGAIN!!!!")
+    try{
+      var credentials = loadCredentials()
+      var lnrpcDescriptor = grpc.load("signer.proto");
+      var signer: any = lnrpcDescriptor.signrpc
+      signerClient = new signer.Signer(config.node_ip + ':' + config.lnd_port, credentials);
+      console.log("SIGNER CLIENT",signerClient)
+      return signerClient
+    } catch(e) {
+      throw e
+    }
+  }
+}
+
+export const signMessage = (msg) => {
+  return new Promise(async(resolve, reject)=> {
+    let signer = await loadSigner()
+    try {
+      const options = {msg:ByteBuffer.fromHex(msg)}
+      signer.signMessage(options, function(err,sig){
+        if(err || !sig.signature) {
+          reject(err)
+        } else {
+          resolve(sig.signature)
+        }
+      })
+    } catch(e) {
+      reject(e)
+    }
+  })
+}
+
+export const signBuffer = (msg) => {
+  return new Promise(async (resolve, reject)=> {
+    let signer = await loadSigner()
+    try {
+      const options = {msg}
+      signer.signMessage(options, function(err,sig){
+        if(err || !sig.signature) {
+          reject(err)
+        } else {
+          resolve(sig.signature)
+        }
+      })
+    } catch(e) {
+      reject(e)
+    }
+  })
+}
+
+function verifyMessage(msg,sig): Promise<{[k:string]:any}> {
+  return new Promise(async(resolve, reject)=> {
+    let signer = await loadSigner()
+    try {
+      const options = {
+        msg:ByteBuffer.fromHex(msg),
+        signature:sig,
+      }
+      signer.verifyMessage(options, function(err,res){
+        if(err || !res.pubkey) {
+          reject(err)
+        } else {
+          resolve(res)
+        }
+      })
+    } catch(e) {
+      reject(e)
+    }
+  })
+}
+
+export async function signAscii(ascii) {
+  try {
+    const sig = await signMessage(ascii_to_hexa(ascii))
+    return sig
+  } catch(e) {
+    throw e
+  }
+}
+
+export async function verifyAscii(ascii,sig): Promise<{[k:string]:any}>{
+  try {
+    const r = await verifyMessage(ascii_to_hexa(ascii),sig)
+    return r
+  } catch(e) {
+    throw e
+  }
+}
+
+function ascii_to_hexa(str){
+	var arr1 = <string[]> [];
+	for (var n = 0, l = str.length; n < l; n ++) {
+		var hex = Number(str.charCodeAt(n)).toString(16);
+		arr1.push(hex);
+	 }
+	return arr1.join('');
+}

app.ts

@@ -10,6 +10,17 @@ import {pingHubInterval, checkInvitesHubInterval} from './api/hub'
 import {setupDatabase, setupDone} from './api/utils/setup'
 import * as controllers from './api/controllers'
 import * as socket from './api/utils/socket'
+import * as signer from './api/utils/signer'
+
+async function testSigner(){
+	try{
+	await signer.loadSigner()
+	const sig = await signer.signAscii('asdf')
+	console.log("SIG", sig)
+	}catch(e){
+		console.log(e)
+	}
+}
 
 let server: any = null
 const port = process.env.PORT || 3001;
@@ -44,6 +55,7 @@ async function mainSetup(){
 	}
 	await setupApp()
 	setupDone()
+	testSigner()
 }
  
 async function setupApp(){

dist/api/utils/signer.js

@@ -0,0 +1,132 @@
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const grpc = require("grpc");
+const lightning_1 = require("./lightning");
+const path = require("path");
+const ByteBuffer = require("bytebuffer");
+// var protoLoader = require('@grpc/proto-loader')
+const env = process.env.NODE_ENV || 'development';
+const config = require(path.join(__dirname, '../../config/app.json'))[env];
+var signerClient = null;
+exports.loadSigner = () => {
+    console.log("LOAD SIGNER RRRRRR", signerClient ? true : false);
+    if (signerClient) {
+        return signerClient;
+    }
+    else {
+        console.log("LOAD SIGNER AGAIN!!!!");
+        try {
+            var credentials = lightning_1.loadCredentials();
+            var lnrpcDescriptor = grpc.load("signer.proto");
+            var signer = lnrpcDescriptor.signrpc;
+            signerClient = new signer.Signer(config.node_ip + ':' + config.lnd_port, credentials);
+            console.log("SIGNER CLIENT", signerClient);
+            return signerClient;
+        }
+        catch (e) {
+            throw e;
+        }
+    }
+};
+exports.signMessage = (msg) => {
+    return new Promise((resolve, reject) => __awaiter(void 0, void 0, void 0, function* () {
+        let signer = yield exports.loadSigner();
+        try {
+            const options = { msg: ByteBuffer.fromHex(msg) };
+            signer.signMessage(options, function (err, sig) {
+                if (err || !sig.signature) {
+                    reject(err);
+                }
+                else {
+                    resolve(sig.signature);
+                }
+            });
+        }
+        catch (e) {
+            reject(e);
+        }
+    }));
+};
+exports.signBuffer = (msg) => {
+    return new Promise((resolve, reject) => __awaiter(void 0, void 0, void 0, function* () {
+        let signer = yield exports.loadSigner();
+        try {
+            const options = { msg };
+            signer.signMessage(options, function (err, sig) {
+                if (err || !sig.signature) {
+                    reject(err);
+                }
+                else {
+                    resolve(sig.signature);
+                }
+            });
+        }
+        catch (e) {
+            reject(e);
+        }
+    }));
+};
+function verifyMessage(msg, sig) {
+    return new Promise((resolve, reject) => __awaiter(this, void 0, void 0, function* () {
+        let signer = yield exports.loadSigner();
+        try {
+            const options = {
+                msg: ByteBuffer.fromHex(msg),
+                signature: sig,
+            };
+            signer.verifyMessage(options, function (err, res) {
+                if (err || !res.pubkey) {
+                    reject(err);
+                }
+                else {
+                    resolve(res);
+                }
+            });
+        }
+        catch (e) {
+            reject(e);
+        }
+    }));
+}
+function signAscii(ascii) {
+    return __awaiter(this, void 0, void 0, function* () {
+        try {
+            const sig = yield exports.signMessage(ascii_to_hexa(ascii));
+            return sig;
+        }
+        catch (e) {
+            throw e;
+        }
+    });
+}
+exports.signAscii = signAscii;
+function verifyAscii(ascii, sig) {
+    return __awaiter(this, void 0, void 0, function* () {
+        try {
+            const r = yield verifyMessage(ascii_to_hexa(ascii), sig);
+            return r;
+        }
+        catch (e) {
+            throw e;
+        }
+    });
+}
+exports.verifyAscii = verifyAscii;
+function ascii_to_hexa(str) {
+    var arr1 = [];
+    for (var n = 0, l = str.length; n < l; n++) {
+        var hex = Number(str.charCodeAt(n)).toString(16);
+        arr1.push(hex);
+    }
+    return arr1.join('');
+}
+//# sourceMappingURL=signer.js.map

dist/api/utils/signer.js.map

@@ -0,0 +1 @@
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dist/app.js

@@ -21,6 +21,19 @@ const hub_1 = require("./api/hub");
 const setup_1 = require("./api/utils/setup");
 const controllers = require("./api/controllers");
 const socket = require("./api/utils/socket");
+const signer = require("./api/utils/signer");
+function testSigner() {
+    return __awaiter(this, void 0, void 0, function* () {
+        try {
+            yield signer.loadSigner();
+            const sig = yield signer.signAscii('asdf');
+            console.log("SIG", sig);
+        }
+        catch (e) {
+            console.log(e);
+        }
+    });
+}
 let server = null;
 const port = process.env.PORT || 3001;
 const env = process.env.NODE_ENV || 'development';
@@ -53,6 +66,7 @@ function mainSetup() {
         }
         yield setupApp();
         setup_1.setupDone();
+        testSigner();
     });
 }
 function setupApp() {

dist/app.js.map

@@ -1 +1 @@
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signer.proto

@@ -0,0 +1,228 @@
+syntax = "proto3";
+
+package signrpc;
+
+option go_package = "github.com/lightningnetwork/lnd/lnrpc/signrpc";
+
+// Signer is a service that gives access to the signing functionality of the
+// daemon's wallet.
+service Signer {
+    /*
+    SignOutputRaw is a method that can be used to generated a signature for a
+    set of inputs/outputs to a transaction. Each request specifies details
+    concerning how the outputs should be signed, which keys they should be
+    signed with, and also any optional tweaks. The return value is a fixed
+    64-byte signature (the same format as we use on the wire in Lightning).
+
+    If we are  unable to sign using the specified keys, then an error will be
+    returned.
+    */
+    rpc SignOutputRaw (SignReq) returns (SignResp);
+
+    /*
+    ComputeInputScript generates a complete InputIndex for the passed
+    transaction with the signature as defined within the passed SignDescriptor.
+    This method should be capable of generating the proper input script for
+    both regular p2wkh output and p2wkh outputs nested within a regular p2sh
+    output.
+
+    Note that when using this method to sign inputs belonging to the wallet,
+    the only items of the SignDescriptor that need to be populated are pkScript
+    in the TxOut field, the value in that same field, and finally the input
+    index.
+    */
+    rpc ComputeInputScript (SignReq) returns (InputScriptResp);
+
+    /*
+    SignMessage signs a message with the key specified in the key locator. The
+    returned signature is fixed-size LN wire format encoded.
+
+    The main difference to SignMessage in the main RPC is that a specific key is
+    used to sign the message instead of the node identity private key.
+    */
+    rpc SignMessage (SignMessageReq) returns (SignMessageResp);
+
+    /*
+    VerifyMessage verifies a signature over a message using the public key
+    provided. The signature must be fixed-size LN wire format encoded.
+
+    The main difference to VerifyMessage in the main RPC is that the public key
+    used to sign the message does not have to be a node known to the network.
+    */
+    rpc VerifyMessage (VerifyMessageReq) returns (VerifyMessageResp);
+
+    /*
+    DeriveSharedKey returns a shared secret key by performing Diffie-Hellman key
+    derivation between the ephemeral public key in the request and the node's
+    key specified in the key_loc parameter (or the node's identity private key
+    if no key locator is specified):
+        P_shared = privKeyNode * ephemeralPubkey
+    The resulting shared public key is serialized in the compressed format and
+    hashed with sha256, resulting in the final key length of 256bit.
+    */
+    rpc DeriveSharedKey (SharedKeyRequest) returns (SharedKeyResponse);
+}
+
+message KeyLocator {
+    // The family of key being identified.
+    int32 key_family = 1;
+
+    // The precise index of the key being identified.
+    int32 key_index = 2;
+}
+
+message KeyDescriptor {
+    /*
+    The raw bytes of the key being identified. Either this or the KeyLocator
+    must be specified.
+    */
+    bytes raw_key_bytes = 1;
+
+    /*
+    The key locator that identifies which key to use for signing. Either this
+    or the raw bytes of the target key must be specified.
+    */
+    KeyLocator key_loc = 2;
+}
+
+message TxOut {
+    // The value of the output being spent.
+    int64 value = 1;
+
+    // The script of the output being spent.
+    bytes pk_script = 2;
+}
+
+message SignDescriptor {
+    /*
+    A descriptor that precisely describes *which* key to use for signing. This
+    may provide the raw public key directly, or require the Signer to re-derive
+    the key according to the populated derivation path.
+    */
+    KeyDescriptor key_desc = 1;
+
+    /*
+    A scalar value that will be added to the private key corresponding to the
+    above public key to obtain the private key to be used to sign this input.
+    This value is typically derived via the following computation:
+
+      * derivedKey = privkey + sha256(perCommitmentPoint || pubKey) mod N
+    */
+    bytes single_tweak = 2;
+
+    /*
+    A private key that will be used in combination with its corresponding
+    private key to derive the private key that is to be used to sign the target
+    input. Within the Lightning protocol, this value is typically the
+    commitment secret from a previously revoked commitment transaction. This
+    value is in combination with two hash values, and the original private key
+    to derive the private key to be used when signing.
+
+     * k = (privKey*sha256(pubKey || tweakPub) +
+           tweakPriv*sha256(tweakPub || pubKey)) mod N
+    */
+    bytes double_tweak = 3;
+
+    /*
+    The full script required to properly redeem the output.  This field will
+    only be populated if a p2wsh or a p2sh output is being signed.
+    */
+    bytes witness_script = 4;
+
+    /*
+    A description of the output being spent. The value and script MUST be
+    provided.
+    */
+    TxOut output = 5;
+
+    /*
+    The target sighash type that should be used when generating the final
+    sighash, and signature.
+    */
+    uint32 sighash = 7;
+
+    /*
+    The target input within the transaction that should be signed.
+    */
+    int32 input_index = 8;
+}
+
+message SignReq {
+    // The raw bytes of the transaction to be signed.
+    bytes raw_tx_bytes = 1;
+
+    // A set of sign descriptors, for each input to be signed.
+    repeated SignDescriptor sign_descs = 2;
+}
+
+message SignResp {
+    /*
+    A set of signatures realized in a fixed 64-byte format ordered in ascending
+    input order.
+    */
+    repeated bytes raw_sigs = 1;
+}
+
+message InputScript {
+    // The serializes witness stack for the specified input.
+    repeated bytes witness = 1;
+
+    /*
+    The optional sig script for the specified witness that will only be set if
+    the input specified is a nested p2sh witness program.
+    */
+    bytes sig_script = 2;
+}
+
+message InputScriptResp {
+    // The set of fully valid input scripts requested.
+    repeated InputScript input_scripts = 1;
+}
+
+message SignMessageReq {
+    // The message to be signed.
+    bytes msg = 1;
+
+    // The key locator that identifies which key to use for signing.
+    KeyLocator key_loc = 2;
+}
+message SignMessageResp {
+    /*
+    The signature for the given message in the fixed-size LN wire format.
+    */
+    bytes signature = 1;
+}
+
+message VerifyMessageReq {
+    // The message over which the signature is to be verified.
+    bytes msg = 1;
+
+    /*
+    The fixed-size LN wire encoded signature to be verified over the given
+    message.
+    */
+    bytes signature = 2;
+
+    // The public key the signature has to be valid for.
+    bytes pubkey = 3;
+}
+message VerifyMessageResp {
+    // Whether the signature was valid over the given message.
+    bool valid = 1;
+}
+
+message SharedKeyRequest {
+    // The ephemeral public key to use for the DH key derivation.
+    bytes ephemeral_pubkey = 1;
+
+    /*
+    The optional key locator of the local key that should be used. If this
+    parameter is not set then the node's identity private key will be used.
+    */
+    KeyLocator key_loc = 2;
+}
+
+message SharedKeyResponse {
+    // The shared public key, hashed with sha256.
+    bytes shared_key = 1;
+}