Reduce deprecation warnings from cryptography module

SecurityInnovation / PGPy

Pretty Good Privacy for Python

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Reduce deprecation warnings from cryptography module #445

Open dkg opened 1 year ago

dkg commented 1 year ago

Modern versions of the python cryptography module deprecate IDEA, CAST5, and Blowfish.

These changes ensure that the CryptographyDeprecationWarnings will be produced only when handling or producing material that uses one of those algorithms explicitly.