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Diffstat (limited to 'docs/primitives')
| -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 d0429d4b..7ec42a30 100644 --- a/docs/primitives/symmetric-encryption.rst +++ b/docs/primitives/symmetric-encryption.rst @@ -68,6 +68,19 @@ Modes reuse an ``initialization_vector`` with a given ``key``. +.. class:: cryptography.primitives.block.modes.OFB(initialization_vector) + + 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``. + Insecure Modes -------------- |