o e@s,ddlmZddlZGdddejdZdS)) annotationsNc@s,eZdZejd ddZejd dd Zd S) KeyDerivationFunction key_materialbytesreturncCdS)zo Deterministically generates and returns a new key based on the existing key material. N)selfrrr^/var/www/html/venv/lib/python3.10/site-packages/cryptography/hazmat/primitives/kdf/__init__.pyderive zKeyDerivationFunction.derive expected_keyNonecCr)z Checks whether the key generated by the key material matches the expected derived key. Raises an exception if they do not match. Nr)r rr rrr verifyr zKeyDerivationFunction.verifyN)rrrr)rrr rrr)__name__ __module__ __qualname__abcabstractmethodr rrrrr r s  r) metaclass) __future__rrABCMetarrrrr s