diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/primitives/symmetric-encryption.rst | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst index 7ec42a30..587c94b4 100644 --- a/docs/primitives/symmetric-encryption.rst +++ b/docs/primitives/symmetric-encryption.rst @@ -68,18 +68,16 @@ Modes reuse an ``initialization_vector`` with a given ``key``. -.. class:: cryptography.primitives.block.modes.OFB(initialization_vector) +.. class:: cryptography.primitives.block.modes.OFB(nonce) OFB (Output 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``. + :param bytes nonce: 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. Reuse of a ``nonce`` with a given + ``key`` can allow recovery of the original plaintext. Insecure Modes |