telegram-mtproto/es/worker.js

Telegram MTProto library

var { pqPrimeFactorization, bytesModPow, sha1HashSync,
  aesEncryptSync, aesDecryptSync } = require('./bin');

console.info('Crypto worker registered');

var post = (() => {
  function postPlain(data) {
    postMessage(data);
  }
  var result = function postStar(data) {
    postMessage(data, '*');
  };
  try {
    result('ready');
  } catch (err) {
    result = postPlain;
    result('ready');
  } finally {
    //eslint-disable-next-line
    return result;
  }
})();

var runTask = data => {
  switch (data.task) {
    case 'factorize':
      return pqPrimeFactorization(data.bytes);
    case 'mod-pow':
      return bytesModPow(data.x, data.y, data.m);
    case 'sha1-hash':
      return sha1HashSync(data.bytes);
    case 'aes-encrypt':
      return aesEncryptSync(data.bytes, data.keyBytes, data.ivBytes);
    case 'aes-decrypt':
      return aesDecryptSync(data.encryptedBytes, data.keyBytes, data.ivBytes);
    default:
      throw new Error(`Unknown task: ${data.task}`);
  }
};

onmessage = function (e) {
  if (e.data === '') {
    console.info('empty crypto task');
  } else if (typeof e.data === 'string') {
    console.info('crypto task string message', e.data);
  } else {
    var taskID = e.data.taskID;
    var result = runTask(e.data);
    post({ taskID, result });
  }
};
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