:py:mod:`pylibressl.cipher.noauth`
==================================

.. py:module:: pylibressl.cipher.noauth


Module Contents
---------------

Classes
~~~~~~~

.. autoapisummary::

   pylibressl.cipher.noauth.BaseCipherNoauth
   pylibressl.cipher.noauth.AES256_CTR
   pylibressl.cipher.noauth.AES256_CBC
   pylibressl.cipher.noauth.GOST89_CTR




.. py:class:: BaseCipherNoauth(key, iv)

   Bases: :py:obj:`pylibressl.cipher.cipher.BaseCipher`

   Base symmetric cipher class (without AE).

   .. py:method:: _init_cipher_ctx(self, is_encrypt)

      Initialise cipher context.

      Should return cipher context cdata. It should be ready to do
      EVP_CipherUpdate.



   .. py:method:: encrypt(self, data)

      Encrypt a message.

      :param data: data to encrypt as a byte string
      :return: encrypted message



   .. py:method:: decrypt(self, data)

      Decrypt a message.

      :param data: data to encrypt as a byte string
      :return: decrypted message




.. py:class:: AES256_CTR(key, iv)

   Bases: :py:obj:`BaseCipherNoauth`

   AES 256-bit cipher in CTR (counter) mode.

   .. py:attribute:: _CIPHER_ID
      

      

   .. py:attribute:: _MODE
      

      


.. py:class:: AES256_CBC(key, iv)

   Bases: :py:obj:`BaseCipherNoauth`

   AES 256-bit cipher in CBC (cipher block chaining) mode.

   .. py:attribute:: _CIPHER_ID
      

      

   .. py:attribute:: _MODE
      

      


.. py:class:: GOST89_CTR(key, iv)

   Bases: :py:obj:`BaseCipherNoauth`

   GOST R 28147-89 256-bit cipher in CTR (counter) mode.

   .. py:attribute:: _CIPHER_ID
      

      

   .. py:attribute:: _MODE