Method canUnlockKey

src/controller/sync.controller.js:181–203

* Check if key can be unlocked without requesting the password from the user * @param {String} operation - 'decrypt' or 'sign', the operation for which the key is required * @param {Object} options - mandatory * @param {openpgp.key.Key} options.key * @param {String} [options.password]

(operation, options)

   * @return {Boolean} - true if key can be unlocked
   */
  async canUnlockKey(operation, options) {
    if (options.password) {
      // key can always be unlocked with password
      return true;
    }
    const isKeyCached = await isCached(options.key.getFingerprint());
    if (isKeyCached) {
      return true;
    }
    try {
      let key;
      if (operation === 'sign') {
        key = await options.key.getSigningKey();
        return key && key.isDecrypted();
      } else if (operation === 'decrypt') {
        key = await options.key.getEncryptionKey();
        return key && key.isDecrypted();
      }
    } catch (e) {
      console.log('No valid key for operation sign or decrypt', e);
      return false;
    }
  }

  sync(type, data) {
    return new Promise((resolve, reject) => {