js-crypto-hash
Version:
Universal Module for Hash Function in JavaScript
184 lines • 8.76 kB
JavaScript
;
/**
* hash.js
*/
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
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desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
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 (g && (g = 0, op[0] && (_ = 0)), _) 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 };
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} 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 };
}
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.compute = void 0;
var util = __importStar(require("js-crypto-env"));
var params_1 = __importDefault(require("./params"));
var md5_1 = __importDefault(require("md5"));
var sha3_1 = require("sha3");
var jsHash = __importStar(require("hash.js"));
/**
* Compute Hash value.
* @param {Uint8Array} msg - Byte array of message to be hashed.
* @param {HashTypes} [hash = 'SHA-256'] - Name of hash algorithm like 'SHA-256'.
* @return {Promise<Uint8Array>} - Hash value
* @throws {Error} - Throws if UnsupportedHashAlgorithm, UnsupportedMessageType,
* or UnsupportedEnvironment, i.e., a case where even pure js implementation won't work.
*/
var compute = function (msg, hash) {
if (hash === void 0) { hash = 'SHA-256'; }
return __awaiter(void 0, void 0, void 0, function () {
var env, msgHash, errMsg, native, e_1, e_2;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
env = util.getCrypto();
native = true;
_a.label = 1;
case 1:
_a.trys.push([1, 5, , 6]);
if (!(env.name === 'webCrypto' && typeof env.crypto.digest === 'function')) return [3 /*break*/, 3];
return [4 /*yield*/, env.crypto.digest(hash, msg)];
case 2:
msgHash = _a.sent();
return [3 /*break*/, 4];
case 3:
if (env.name === 'nodeCrypto') { // for node
msgHash = nodedigest(hash, msg, env.crypto);
}
else
native = false;
_a.label = 4;
case 4: return [3 /*break*/, 6];
case 5:
e_1 = _a.sent();
if (e_1 instanceof Error) {
errMsg = e_1.message;
}
native = false;
return [3 /*break*/, 6];
case 6:
if (!!native) return [3 /*break*/, 10];
_a.label = 7;
case 7:
_a.trys.push([7, 9, , 10]);
return [4 /*yield*/, purejs(hash, msg)];
case 8:
msgHash = _a.sent();
return [3 /*break*/, 10];
case 9:
e_2 = _a.sent();
if (e_2 instanceof Error) {
errMsg = "".concat((typeof errMsg === 'undefined') ? '' : errMsg, " => ").concat(e_2.message);
throw new Error("UnsupportedEnvironment: ".concat(errMsg));
}
else {
throw new Error('UnsupportedEnvironment');
}
return [3 /*break*/, 10];
case 10: return [2 /*return*/, new Uint8Array(msgHash)];
}
});
});
};
exports.compute = compute;
/**
* Compute hash using Node.js implementation
* @param {String} hash - Name of hash algorithm like SHA-256
* @param {Uint8Array} msg - Byte array of message to be hashed.
* @param {Object} nodeCrypto - Node.js crypto object.
* @return {Uint8Array} - Hash value.
*/
var nodedigest = function (hash, msg, nodeCrypto) {
var alg = params_1.default.hashes[hash].nodeName;
var hashFunc = nodeCrypto.createHash(alg);
hashFunc.update(msg);
return hashFunc.digest();
};
/**
* Compute hash using pure js implementations
* @param {String} hash - Name of hash algorithm like SHA-256
* @param {Uint8Array} msg - Byte array of message to be hashed.
* @return {Uint8Array} - Hash value.
*/
var purejs = function (hash, msg) { return __awaiter(void 0, void 0, void 0, function () {
var h, sha3Len, sha3obj, Buffer_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(hash === 'MD5')) return [3 /*break*/, 1];
h = (0, md5_1.default)(Array.from(msg), { asBytes: true });
return [3 /*break*/, 4];
case 1:
if (!(['SHA3-512', 'SHA3-384', 'SHA3-256', 'SHA3-224'].indexOf(hash) >= 0)) return [3 /*break*/, 3];
sha3Len = params_1.default.hashes[hash].hashSize * 8;
sha3obj = new sha3_1.SHA3(sha3Len);
return [4 /*yield*/, Promise.resolve().then(function () { return __importStar(require('buffer')); })];
case 2:
Buffer_1 = (_a.sent()).Buffer;
sha3obj.update(Buffer_1.from(msg));
h = sha3obj.digest('binary');
return [3 /*break*/, 4];
case 3:
// @ts-ignore
h = jsHash[params_1.default.hashes[hash].nodeName]().update(msg).digest();
_a.label = 4;
case 4: return [2 /*return*/, new Uint8Array(h)];
}
});
}); };
//# sourceMappingURL=hash.js.map