o j @s8ddlmZddlZddlmZGdddejdZdS)) annotationsN)Bufferc@s<eZdZejdddZejdd d Zejdd d ZdS)KeyDerivationFunction key_materialbytesreturncCdS)zo Deterministically generates and returns a new key based on the existing key material. N)selfrr r q/var/www/html/fyndo/pharma/fyndo/venv/lib/python3.10/site-packages/cryptography/hazmat/primitives/kdf/__init__.pyderive zKeyDerivationFunction.derivebufferrNonecCr)z Deterministically generates a new key based on the existing key material and stores it in the provided buffer. Nr )r rrr r r derive_intor z!KeyDerivationFunction.derive_into expected_keycCr)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 rrr r r verifyr zKeyDerivationFunction.verifyN)rrrr)rrrrrr)rrrrrr)__name__ __module__ __qualname__abcabstractmethodr rrr r r r r s  r) metaclass) __future__rrcryptography.utilsrABCMetarr r r r s