human-crypto-keys/lib/utils/prng.js

Generate and import human-friendly cryptographic keys using mnemonics or seeds

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _util = _interopRequireDefault(require("node-forge/lib/util"));

var _hmacDrbg = _interopRequireDefault(require("hmac-drbg"));

var _hash = _interopRequireDefault(require("hash.js"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const createPrng = seed => {
  const hmacDrgb = new _hmacDrbg.default({
    hash: _hash.default.sha256,
    entropy: _util.default.binary.hex.encode(seed),
    nonce: null,
    pers: null
  });
  return {
    getBytesSync: size => {
      const bytesArray = hmacDrgb.generate(size);
      const bytes = new Uint8Array(bytesArray);
      return _util.default.binary.raw.encode(bytes);
    }
  };
};

var _default = createPrng;
exports.default = _default;
module.exports = exports.default;