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| -rw-r--r-- | docs/hazmat/primitives/symmetric-encryption.rst | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst index 94d58eee..31ceea8a 100644 --- a/docs/hazmat/primitives/symmetric-encryption.rst +++ b/docs/hazmat/primitives/symmetric-encryption.rst @@ -107,11 +107,21 @@ Ciphers ``56`` bits long), they can simply be concatenated to produce the full key. This must be kept secret. +Weak Ciphers +------------ + +.. warning:: + + These ciphers are considered weak for a variety of reasons. New + applications should avoid their use and existing applications should + strongly consider migrating away. + .. class:: Blowfish(key) Blowfish is a block cipher developed by Bruce Schneier. It is known to be susceptible to attacks when using weak keys. The author has recommended - that users of Blowfish move to newer algorithms like AES. + that users of Blowfish move to newer algorithms like + :class:`AES`. :param bytes key: The secret key, 32-448 bits in length (in increments of 8). This must be kept secret. |