diff options
Diffstat (limited to 'docs/hazmat/primitives/symmetric-encryption.rst')
| -rw-r--r-- | docs/hazmat/primitives/symmetric-encryption.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst index e5d8c65b..0e3a451c 100644 --- a/docs/hazmat/primitives/symmetric-encryption.rst +++ b/docs/hazmat/primitives/symmetric-encryption.rst @@ -275,6 +275,19 @@ Modes Must be the same number of bytes as the ``block_size`` of the cipher. Do not reuse an ``initialization_vector`` with a given ``key``. +.. class:: CFB8(initialization_vector) + + CFB (Cipher Feedback) is a mode of operation for block ciphers. It + transforms a block cipher into a stream cipher. The CFB8 variant uses an + 8-bit shift register. + + **This mode does not require padding.** + + :param bytes initialization_vector: Must be random bytes. They do not need + to be kept secret and they can be included in a transmitted message. + Must be the same number of bytes as the ``block_size`` of the cipher. + Do not reuse an ``initialization_vector`` with a given ``key``. + .. class:: GCM(initialization_vector, tag=None) .. danger:: |