@polkadot/util-keyring/pair/encode.js

Keyring management

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

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

var _concat = _interopRequireDefault(require("@polkadot/util/u8a/concat"));

var _fixLength = _interopRequireDefault(require("@polkadot/util/u8a/fixLength"));

var _fromString = _interopRequireDefault(require("@polkadot/util/u8a/fromString"));

var _encrypt = _interopRequireDefault(require("@polkadot/util-crypto/nacl/encrypt"));

var _defaults = require("./defaults");

// Copyright 2017-2018 @polkadot/util-keyring authors & contributors
// This software may be modified and distributed under the terms
// of the ISC license. See the LICENSE file for details.
function encode(secretKey, passphrase) {
  const encoded = (0, _concat.default)(_defaults.PKCS8_HEADER, secretKey.subarray(0, 32), _defaults.PKCS8_DIVIDER, secretKey.subarray(32, 64));

  if (!passphrase) {
    return encoded;
  }

  const _naclEncrypt = (0, _encrypt.default)(encoded, (0, _fixLength.default)((0, _fromString.default)(passphrase), 256, true)),
        encrypted = _naclEncrypt.encrypted,
        nonce = _naclEncrypt.nonce;

  return (0, _concat.default)(nonce, encrypted);
}