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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/hazmat/primitives/symmetric-encryption.rst | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst index 1e047b7c..5852dc21 100644 --- a/docs/hazmat/primitives/symmetric-encryption.rst +++ b/docs/hazmat/primitives/symmetric-encryption.rst @@ -107,6 +107,33 @@ Ciphers ``56`` bits long), they can simply be concatenated to produce the full key. This must be kept secret. +.. class:: CAST5(key) + + CAST5 (also known as CAST-128) is a block cipher approved for use in the + Canadian government by their Communications Security Establishment. It is a + variable key length cipher and supports keys from 40-128 bits in length. + + :param bytes key: The secret key, 40-128 bits in length (in increments of + 8). 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 + :class:`AES`. + + :param bytes key: The secret key, 32-448 bits in length (in increments of + 8). This must be kept secret. Modes ~~~~~ |