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Diffstat (limited to 'docs/hazmat/primitives/interfaces.rst')
| -rw-r--r-- | docs/hazmat/primitives/interfaces.rst | 42 |
1 files changed, 2 insertions, 40 deletions
diff --git a/docs/hazmat/primitives/interfaces.rst b/docs/hazmat/primitives/interfaces.rst index 6029d1a9..f58d324d 100644 --- a/docs/hazmat/primitives/interfaces.rst +++ b/docs/hazmat/primitives/interfaces.rst @@ -47,46 +47,8 @@ In 0.8 the EC key interfaces were moved to the Key derivation functions ------------------------ -.. class:: KeyDerivationFunction - - .. versionadded:: 0.2 - - .. method:: derive(key_material) - - :param bytes key_material: The input key material. Depending on what - key derivation function you are using this - could be either random bytes, or a user - supplied password. - :return: The new key. - :raises cryptography.exceptions.AlreadyFinalized: This is raised when - :meth:`derive` or - :meth:`verify` is - called more than - once. - - This generates and returns a new key from the supplied key material. - - .. method:: verify(key_material, expected_key) - - :param bytes key_material: The input key material. This is the same as - ``key_material`` in :meth:`derive`. - :param bytes expected_key: The expected result of deriving a new key, - this is the same as the return value of - :meth:`derive`. - :raises cryptography.exceptions.InvalidKey: This is raised when the - derived key does not match - the expected key. - :raises cryptography.exceptions.AlreadyFinalized: This is raised when - :meth:`derive` or - :meth:`verify` is - called more than - once. - - This checks whether deriving a new key from the supplied - ``key_material`` generates the same key as the ``expected_key``, and - raises an exception if they do not match. This can be used for - something like checking whether a user's password attempt matches the - stored derived key. +In 0.8 the key derivation function interface was moved to the +:mod:`cryptography.hazmat.primitives.kdf` module. `Message Authentication Code`_ |