Method getKey

lib/cipher.js:275–277

* Gets the key used for encryption/decryption * @returns {String} sessionKey (if set for protocol 3.4, 3.5) or key

()

   * @returns {String} sessionKey (if set for protocol 3.4, 3.5) or key
   */
  getKey() {
    return this.sessionKey === null ? this.key : this.sessionKey;
  }

  /**
   * Returns the HMAC for the current key (sessionKey if set for protocol 3.4, 3.5 or key)