Merge pull request #409 from bguiz/feat/rsk-network

feat: rsk network

2 files changed, 104 insertions, 4 deletions

diff --git a/src/js/bitcoinjs-extensions.js b/src/js/bitcoinjs-extensions.js
index 2792e13..e67996c 100644
--- a/src/js/bitcoinjs-extensions.js
+++ b/src/js/bitcoinjs-extensions.js
@@ -1175,6 +1175,31 @@ libs.bitcoin.networks.revolutionvr = {
   wif: 0xc6,
 };
 
+libs.bitcoin.networks.rsk = {
+  messagePrefix: '\x18RSK Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  // TODO defaulting to Bitcoin value, check this
+  pubKeyHash: 0x00,
+  // TODO defaulting to Bitcoin value, check this
+  scriptHash: 0x05,
+  // TODO defaulting to Bitcoin value, check this
+  wif: 0x80
+};
+
+libs.bitcoin.networks.rsktestnet = {
+  messagePrefix: '\x18RSK Testnet Signed Message:\n',
+  bip32: {
+    public: 0x043587cf,
+    private: 0x04358394
+  },
+  pubKeyHash: 0x6f,
+  scriptHash: 0xc4,
+  wif: 0xef
+};
+
 libs.bitcoin.networks.rubycoin = {
   messagePrefix: '\x18Rubycoin Signed Message:\n',
   bip32: {
diff --git a/src/js/index.js b/src/js/index.js
index e8072e4..43c6955 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -1140,11 +1140,40 @@
                     }
                 }
 
+                // RSK values are different
+                if (networkIsRsk()) {
+                    var pubkeyBuffer = keyPair.getPublicKeyBuffer();
+                    var ethPubkey = libs.ethUtil.importPublic(pubkeyBuffer);
+                    var addressBuffer = libs.ethUtil.publicToAddress(ethPubkey);
+                    var hexAddress = addressBuffer.toString('hex');
+                    // Use chainId based on selected network
+                    // Ref: https://developers.rsk.co/rsk/architecture/account-based/#chainid
+                    var chainId;
+                    var rskNetworkName = networks[DOM.network.val()].name;
+                    switch (rskNetworkName) {
+                        case "R-BTC - RSK":
+                            chainId = 30;
+                            break;
+                        case "tR-BTC - RSK Testnet":
+                            chainId = 31;
+                            break;
+                        default:
+                            chainId = null;
+                    }
+                    var checksumAddress = toChecksumAddressForRsk(hexAddress, chainId);
+                    address = libs.ethUtil.addHexPrefix(checksumAddress);
+                    pubkey = libs.ethUtil.addHexPrefix(pubkey);
+                    if (hasPrivkey) {
+                        privkey = libs.ethUtil.bufferToHex(keyPair.d.toBuffer());
+                    }
+                }
+
                 // Handshake values are different
                 if (networks[DOM.network.val()].name == "HNS - Handshake") {
                     var ring = libs.handshake.KeyRing.fromPublic(keyPair.getPublicKeyBuffer())
                     address = ring.getAddress().toString();
                 }
+
                 // Stellar is different
                 if (networks[DOM.network.val()].name == "XLM - Stellar") {
                     var purpose = parseIntNoNaN(DOM.bip44purpose.val(), 44);
@@ -1860,6 +1889,12 @@
                     || (name == "ERE - EtherCore")
     }
 
+    function networkIsRsk() {
+        var name = networks[DOM.network.val()].name;
+        return (name == "R-BTC - RSK")
+            || (name == "tR-BTC - RSK Testnet");
+    }
+
     function networkHasSegwit() {
         var n = network;
         if ("baseNetwork" in network) {
@@ -3004,16 +3039,16 @@
             },
         },
         {
-            name: "RBTC - RSK",
+            name: "R-BTC - RSK",
             onSelect: function() {
-                network = libs.bitcoin.networks.rubycoin;
+                network = libs.bitcoin.networks.rsk;
                 setHdCoin(137);
             },
         },
         {
-            name: "tRBTC - RSK Testnet",
+            name: "tR-BTC - RSK Testnet",
             onSelect: function() {
-                network = libs.bitcoin.networks.rubycoin;
+                network = libs.bitcoin.networks.rsktestnet;
                 setHdCoin(37310);
             },
         },
@@ -3394,6 +3429,46 @@
         }
     ]
 
+    // RSK - RSK functions - begin
+    function stripHexPrefix(address) {
+        if (typeof address !== "string") {
+            throw new Error("address parameter should be a string.");
+        }
+
+        var hasPrefix = (address.substring(0, 2) === "0x" ||
+            address.substring(0, 2) === "0X");
+
+        return hasPrefix ? address.slice(2) : address;
+    };
+
+    function toChecksumAddressForRsk(address, chainId = null) {
+        if (typeof address !== "string") {
+            throw new Error("address parameter should be a string.");
+        }
+
+        if (!/^(0x)?[0-9a-f]{40}$/i.test(address)) {
+            throw new Error("Given address is not a valid RSK address: " + address);
+        }
+
+        var stripAddress = stripHexPrefix(address).toLowerCase();
+        var prefix = chainId != null ? chainId.toString() + "0x" : "";
+        var keccakHash = libs.ethUtil.keccak256(prefix + stripAddress)
+            .toString("hex")
+            .replace(/^0x/i, "");
+        var checksumAddress = "0x";
+
+        for (var i = 0; i < stripAddress.length; i++) {
+            checksumAddress +=
+                parseInt(keccakHash[i], 16) >= 8 ?
+                stripAddress[i].toUpperCase() :
+                stripAddress[i];
+        }
+
+        return checksumAddress;
+    }
+
+    // RSK - RSK functions - end
+
     // ELA - Elastos functions - begin
     function displayBip44InfoForELA() {
         if (!isELA()) {