diff options
Diffstat (limited to 'docs/primitives')
| -rw-r--r-- | docs/primitives/symmetric-encryption.rst | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst index 52bd6a40..9520d6eb 100644 --- a/docs/primitives/symmetric-encryption.rst +++ b/docs/primitives/symmetric-encryption.rst @@ -87,8 +87,11 @@ Modes message). Must be the same number of bytes as the ``block_size`` of the cipher. It is critical to never reuse a ``nonce`` with a given ``key``. Unlike - CBC, reusing a nonce compromises the security of - all data encrypted under the key (see: two time pad). + :class:`~cryptography.primitives.block.modes.CBC`, + reusing a nonce compromises the security of all data + encrypted under the key. Specifically, + (pt1 xor keystream) xor (pt2 xor keystream) is + equivalent to (pt1 xor pt2). .. class:: cryptography.primitives.block.modes.OFB(initialization_vector) |