diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/primitives/cryptographic-hashes.rst | 4 | ||||
| -rw-r--r-- | docs/primitives/symmetric-encryption.rst | 17 |
2 files changed, 20 insertions, 1 deletions
diff --git a/docs/primitives/cryptographic-hashes.rst b/docs/primitives/cryptographic-hashes.rst index d4dde042..aeb30f40 100644 --- a/docs/primitives/cryptographic-hashes.rst +++ b/docs/primitives/cryptographic-hashes.rst @@ -1,11 +1,13 @@ Message Digests =============== -.. class:: cryptography.primitives.hashes.BaseHash +.. class:: cryptography.primitives.hashes.BaseHash(data=None) Abstract base class that implements a common interface for all hash algorithms that follow here. + If ``data`` is provided ``update(data)`` is called upon construction. + .. method:: update(data) :param bytes data: The bytes you wish to hash. diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst index 79d712e5..73d8ad37 100644 --- a/docs/primitives/symmetric-encryption.rst +++ b/docs/primitives/symmetric-encryption.rst @@ -79,6 +79,23 @@ Ciphers This must be kept secret. +.. class:: cryptography.primitives.block.ciphers.TripleDES(key) + + Triple DES (Data Encryption Standard), sometimes refered to as 3DES, is a + block cipher standardized by NIST. Triple DES has known cryptoanalytic + flaws, however none of them currently enable a practical attack. + Nonetheless, Triples DES is not reccomended for new applications because it + is incredibly slow; old applications should consider moving away from it. + + :param bytes key: The secret key, either ``64``, ``128``, or ``192`` bits + (note that DES functionally uses ``56``, ``112``, or + ``168`` bits of the key, there is a parity byte in each + component of the key), in some materials these are + referred to as being up to three separate keys (each + ``56`` bits long), they can simply be concatenated to + produce the full key. This must be kept secret. + + Modes ~~~~~ |