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Diffstat (limited to 'docs/primitives/symmetric-encryption.rst')
| -rw-r--r-- | docs/primitives/symmetric-encryption.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst index c4f78a79..be86229b 100644 --- a/docs/primitives/symmetric-encryption.rst +++ b/docs/primitives/symmetric-encryption.rst @@ -79,6 +79,19 @@ Modes of the cipher. Reuse of a ``nonce`` with a given ``key`` can allow recovery of the original plaintext. +.. class:: cryptography.primitives.block.modes.CFB(initialization_vector) + + CFB (Cipher Feedback) is a mode of operation for block ciphers. It + transforms a block cipher into a stream cipher. + + :param bytes initialization_vector: Must be random bytes. They do not need + to be kept secret (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``. + Insecure Modes -------------- |