Lines Matching refs:GCM

360 .. class:: GCM(initialization_vector, tag=None, min_tag_length=16)
374         has been called. GCM provides **no** guarantees of ciphertext integrity
377     GCM (Galois Counter Mode) is a mode of operation for block ciphers. An
425     ``GCM`` mode looks like:
440             # Construct an AES-GCM Cipher object with the given key and a
444                 modes.GCM(iv),
453             # GCM does not require padding.
460             # GCM tag used for authenticating the message.
463                 modes.GCM(iv, tag),
632     :class:`~cryptography.hazmat.primitives.ciphers.modes.GCM`) the result will
658     :class:`~cryptography.hazmat.primitives.ciphers.modes.GCM` an object
676     :class:`~cryptography.hazmat.primitives.ciphers.modes.GCM` an object
693             ``min_tag_length`` is an argument to the ``GCM`` constructor.
698         of the :class:`~cryptography.hazmat.primitives.ciphers.modes.GCM` mode