BIP38 encrypt/decrypt WIFs on mainnet/testnet.

Author: cloneearth

index.js

@@ -25,7 +25,7 @@ let cmd = require('node-cmd');
 // let ProgressBar = require('progress');
 
 program
-  .version('1.0.2');
+  .version('1.0.3');
 
 program
   .command('new <name>')

lib/BitcoinCash.js

@@ -34,6 +34,14 @@ var _coininfo = require('coininfo');
 
 var _coininfo2 = _interopRequireDefault(_coininfo);
 
+var _bip3 = require('bip38');
+
+var _bip4 = _interopRequireDefault(_bip3);
+
+var _wif = require('wif');
+
+var _wif2 = _interopRequireDefault(_wif);
+
 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
 
 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
@@ -187,6 +195,27 @@ var BitcoinCash = function () {
 
       return Math.ceil(totalWeight / 4);
     }
+  }, {
+    key: 'encryptBIP38',
+    value: function encryptBIP38(privKeyWIF, passphrase) {
+      var decoded = _wif2.default.decode(privKeyWIF);
+
+      return _bip4.default.encrypt(decoded.privateKey, decoded.compressed, passphrase);
+    }
+  }, {
+    key: 'decryptBIP38',
+    value: function decryptBIP38(encryptedKey, passphrase) {
+      var network = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'mainnet';
+
+      var decryptedKey = _bip4.default.decrypt(encryptedKey, passphrase);
+      var prefix = void 0;
+      if (network === 'testnet') {
+        prefix = 0xEF;
+      } else {
+        prefix = 0x80;
+      }
+      return _wif2.default.encode(prefix, decryptedKey.privateKey, decryptedKey.compressed);
+    }
   }]);
 
   return BitcoinCash;

package-lock.json

@@ -1,11 +1,11 @@
 {
   "name": "bitbox-cli",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "A development framework for Bitcoin Cash",
   "author": "@bitboxearth",
   "main": "index.js",
   "scripts": {
-    "test": "nyc mocha --require babel-core/register",
+    "test": "nyc mocha --timeout 15000 --require babel-core/register",
     "build": "babel src/ -d lib/",
     "flow": "flow"
   },
@@ -28,6 +28,7 @@
     "bchaddrjs": "^0.2.1",
     "bigi": "^1.4.2",
     "bip21": "bigearth/bip21",
+    "bip38": "^2.0.2",
     "bip39": "^2.5.0",
     "bip68": "^1.0.4",
     "bitcoin-ops": "bigearth/bitcoin-ops",
@@ -54,7 +55,8 @@
     "repl.history": "^0.1.4",
     "safe-buffer": "^5.1.2",
     "satoshi-bitcoin": "^1.0.4",
-    "touch": "^3.1.0"
+    "touch": "^3.1.0",
+    "wif": "^2.0.6"
   },
   "devDependencies": {
     "chai": "^4.1.2",

package.json

@@ -5,6 +5,9 @@ import bitcoinMessage from 'bitcoinjs-message';
 import bs58 from 'bs58';
 import bip21 from 'bip21';
 import coininfo from'coininfo';
+import bip38 from 'bip38';
+import wif from 'wif';
+
 let Buffer = require('safe-buffer').Buffer
 
 class BitcoinCash {
@@ -117,6 +120,23 @@ class BitcoinCash {
 
     return Math.ceil(totalWeight / 4)
   }
+
+  encryptBIP38(privKeyWIF, passphrase) {
+    let decoded = wif.decode(privKeyWIF);
+
+    return bip38.encrypt(decoded.privateKey, decoded.compressed, passphrase);
+  }
+
+  decryptBIP38(encryptedKey, passphrase, network = 'mainnet') {
+    let decryptedKey = bip38.decrypt(encryptedKey, passphrase);
+    let prefix;
+    if(network === 'testnet') {
+      prefix = 0xEF;
+    } else {
+      prefix = 0x80;
+    }
+    return wif.encode(prefix, decryptedKey.privateKey, decryptedKey.compressed) ;
+  }
 }
 
 export default BitcoinCash;

src/BitcoinCash.js

@@ -186,4 +186,38 @@ describe('#BitcoinCash', () => {
       });
     });
   });
+
+  describe('#bip38', () => {
+    describe('#encryptBIP38', () => {
+      fixtures.bip38.encrypt.mainnet.forEach((fixture) => {
+        it(`BIP 38 encrypt wif ${fixture.wif} with password ${fixture.password} on mainnet`, () => {
+          let encryptedKey = BITBOX.BitcoinCash.encryptBIP38(fixture.wif, fixture.password);
+          assert.equal(encryptedKey, fixture.encryptedKey);
+        });
+      });
+
+      fixtures.bip38.encrypt.testnet.forEach((fixture) => {
+        it(`BIP 38 encrypt wif ${fixture.wif} with password ${fixture.password} on testnet`, () => {
+          let encryptedKey = BITBOX.BitcoinCash.encryptBIP38(fixture.wif, fixture.password);
+          assert.equal(encryptedKey, fixture.encryptedKey);
+        });
+      });
+    });
+
+    describe('#decryptBIP38', () => {
+      fixtures.bip38.decrypt.mainnet.forEach((fixture) => {
+        it(`BIP 38 decrypt encrypted key ${fixture.encryptedKey} on mainnet`, () => {
+          let wif = BITBOX.BitcoinCash.decryptBIP38(fixture.encryptedKey, fixture.password, 'mainnet');
+          assert.equal(wif, fixture.wif);
+        });
+      });
+
+      fixtures.bip38.decrypt.testnet.forEach((fixture) => {
+        it(`BIP 38 decrypt encrypted key ${fixture.encryptedKey} on testnet`, () => {
+          let wif = BITBOX.BitcoinCash.decryptBIP38(fixture.encryptedKey, fixture.password, 'testnet');
+          assert.equal(wif, fixture.wif);
+        });
+      });
+    });
+  });
 });

test/BitcoinCash.js

@@ -348,5 +348,79 @@
         "P2SH":1
       }
     }
-  ]
+  ],
+  "bip38": {
+    "encrypt": {
+      "mainnet": [
+        {
+          "wif": "5KN7MzqK5wt2TP1fQCYyHBtDrXdJuXbUzm4A9rKAteGu3Qi5CVR",
+          "password": "TestingOneTwoThree",
+          "encryptedKey": "6PRVWUbkzzsbcVac2qwfssoUJAN1Xhrg6bNk8J7Nzm5H7kxEbn2Nh2ZoGg"
+        },
+        {
+          "wif": "L1XHKhaBAfkr2FJQn3pTfCMxz652WYfmvKj8xDCHCEDV9tWGcbYj",
+          "password": "1EBPIyj55eR8bVUov9",
+          "encryptedKey": "6PYWWnBNfNpSqEJZKcfwbrYgTTdb9PNiGjQJ8r9V6cvsZNKLfcZD8YefQc"
+        },
+        {
+          "wif": "L1phBREbhL4vb1uHHHCAse8bdGE5c7ic2PFjRxMawLzQCsiFVbvu",
+          "password": "9GKVkabAHBMyAf",
+          "encryptedKey": "6PYU2fDHRVF2194gKDGkbFbeu4mFgkWtVvg2RPd2Sp6KmZx3RCHFpgBB2G"
+        }
+      ],
+      "testnet": [
+        {
+          "wif": "cRQeGr3Wv91dUF94zy2EEP7rgwVsqNnZa3MtM7Civxdk74gNEPNn",
+          "password": "TestingOneTwoThree",
+          "encryptedKey": "6PYXFe1CdGMuVrLCvTo47JUpqcp7sEK7QxE9m4zHHkzUbgqVXVuTUAJh9T"
+        },
+        {
+          "wif": "cSx7KzdH9EcvDEireu2WYpGnXdFYpta7sJUNt5kVCJgA7kcAU8Gm",
+          "password": "1EBPIyj55eR8bVUov9",
+          "encryptedKey": "6PYUAPLwLSEjWSAfoe9NTSPkMZXnJA8j8EFJtKaeSnP18RCouutBrS2735"
+        },
+        {
+          "wif": "cRgunCa2z1gCN6nNapTwKLdo58FdgTeAiJSaXx6RZeWSabQHkQKG",
+          "password": "9GKVkabAHBMyAf",
+          "encryptedKey": "6PYTNQJ1dYhLg6X1Xqm62ceuyfxCUYvV4LfhFfzzBaTuV4cFhgS5Xe8t1Y"
+        }
+      ]
+    },
+    "decrypt": {
+      "mainnet": [
+        {
+          "wif": "5KN7MzqK5wt2TP1fQCYyHBtDrXdJuXbUzm4A9rKAteGu3Qi5CVR",
+          "password": "TestingOneTwoThree",
+          "encryptedKey": "6PRVWUbkzzsbcVac2qwfssoUJAN1Xhrg6bNk8J7Nzm5H7kxEbn2Nh2ZoGg"
+        },
+        {
+          "wif": "L1XHKhaBAfkr2FJQn3pTfCMxz652WYfmvKj8xDCHCEDV9tWGcbYj",
+          "password": "1EBPIyj55eR8bVUov9",
+          "encryptedKey": "6PYWWnBNfNpSqEJZKcfwbrYgTTdb9PNiGjQJ8r9V6cvsZNKLfcZD8YefQc"
+        },
+        {
+          "wif": "L1phBREbhL4vb1uHHHCAse8bdGE5c7ic2PFjRxMawLzQCsiFVbvu",
+          "password": "9GKVkabAHBMyAf",
+          "encryptedKey": "6PYU2fDHRVF2194gKDGkbFbeu4mFgkWtVvg2RPd2Sp6KmZx3RCHFpgBB2G"
+        }
+      ],
+      "testnet": [
+        {
+          "wif": "cRQeGr3Wv91dUF94zy2EEP7rgwVsqNnZa3MtM7Civxdk74gNEPNn",
+          "password": "TestingOneTwoThree",
+          "encryptedKey": "6PYXFe1CdGMuVrLCvTo47JUpqcp7sEK7QxE9m4zHHkzUbgqVXVuTUAJh9T"
+        },
+        {
+          "wif": "cSx7KzdH9EcvDEireu2WYpGnXdFYpta7sJUNt5kVCJgA7kcAU8Gm",
+          "password": "1EBPIyj55eR8bVUov9",
+          "encryptedKey": "6PYUAPLwLSEjWSAfoe9NTSPkMZXnJA8j8EFJtKaeSnP18RCouutBrS2735"
+        },
+        {
+          "wif": "cRgunCa2z1gCN6nNapTwKLdo58FdgTeAiJSaXx6RZeWSabQHkQKG",
+          "password": "9GKVkabAHBMyAf",
+          "encryptedKey": "6PYTNQJ1dYhLg6X1Xqm62ceuyfxCUYvV4LfhFfzzBaTuV4cFhgS5Xe8t1Y"
+        }
+      ]
+    }
+  }
 }