foundry-keystore
Version:
Foundry keystore [](https://travis-ci.org/CodeChain-io/foundry-keystore-js) ===================
141 lines • 7.85 kB
JavaScript
;
// The MIT License (MIT)
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());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
// Copyright (c) 2015 Alex Beregszaszi
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
var crypto = require("crypto");
var foundry_primitives_1 = require("foundry-primitives");
var uuid = require("uuid");
var keys_1 = require("../model/keys");
var crypto_1 = require("./crypto");
var error_1 = require("./error");
// copy code from https://github.com/ethereumjs/ethereumjs-wallet/blob/4c7cbfc12e142491eb5acc98e612f079aabe092e/src/index.js#L109
function encode(privateKey, passphrase, meta) {
return __awaiter(this, void 0, void 0, function () {
var publicKey, address, salt, iv, kdf, kdfparams, derivedKey, cipher, ciphertext, mac;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
publicKey = foundry_primitives_1.getPublicFromPrivate(privateKey);
address = keys_1.keyFromPublicKey(publicKey);
salt = crypto.randomBytes(32);
iv = crypto.randomBytes(16);
kdf = "pbkdf2";
kdfparams = {
dklen: 32,
salt: salt.toString("hex"),
c: 262144,
prf: "hmac-sha256"
};
return [4 /*yield*/, crypto_1.pbkdf2Async(Buffer.from(passphrase), salt, kdfparams.c, kdfparams.dklen, "sha256")];
case 1:
derivedKey = _a.sent();
cipher = crypto.createCipheriv("aes-128-ctr", derivedKey.slice(0, 16), iv);
ciphertext = Buffer.concat([
cipher.update(Buffer.from(privateKey, "hex")),
cipher.final()
]);
mac = foundry_primitives_1.blake256(Buffer.concat([
derivedKey.slice(16, 32),
Buffer.from(ciphertext, "hex")
]));
return [2 /*return*/, {
crypto: {
ciphertext: ciphertext.toString("hex"),
cipherparams: {
iv: iv.toString("hex")
},
cipher: "aes-128-ctr",
kdf: kdf,
kdfparams: kdfparams,
mac: mac
},
id: uuid.v4({
random: Array.prototype.slice.call(crypto.randomBytes(16), 0)
}),
version: 3,
address: address,
meta: meta
}];
}
});
});
}
exports.encode = encode;
function decode(json, passphrase) {
return __awaiter(this, void 0, void 0, function () {
var kdfparams, derivedKey, ciphertext, mac, decipher, privateKey;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
kdfparams = json.crypto.kdfparams;
return [4 /*yield*/, crypto_1.pbkdf2Async(Buffer.from(passphrase), Buffer.from(kdfparams.salt, "hex"), kdfparams.c, kdfparams.dklen, "sha256")];
case 1:
derivedKey = _a.sent();
ciphertext = Buffer.from(json.crypto.ciphertext, "hex");
mac = foundry_primitives_1.blake256(Buffer.concat([derivedKey.slice(16, 32), ciphertext]));
if (mac !== json.crypto.mac) {
throw new error_1.KeystoreError(error_1.ErrorCode.DecryptionFailed);
}
decipher = crypto.createDecipheriv(json.crypto.cipher, derivedKey.slice(0, 16), Buffer.from(json.crypto.cipherparams.iv, "hex"));
privateKey = decipherBuffer(decipher, ciphertext);
return [2 /*return*/, privateKey.toString("hex")];
}
});
});
}
exports.decode = decode;
function decipherBuffer(decipher, data) {
return Buffer.concat([decipher.update(data), decipher.final()]);
}
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