var base58 = require('bs58');
var crypto = require('crypto');

module.exports = function decrypt(password, str) {
  var aes256 = crypto.createDecipher('aes-256-cbc', password);
  var a = aes256.update(new Buffer(base58.decode(str)));
  var b = aes256.final();
  var buf = new Buffer(a.length + b.length);

  a.copy(buf, 0);
  b.copy(buf, a.length);

  return buf.toString('utf8');
};