python-crypto: cryptographic algorithms and protocols for Python Details: USN-3199-1 fixed a vulnerability in the Python Cryptography Toolkit. Unfortunately, various programs depended on the original behavior of the Python Cryptography Toolkit which was altered when fixing the vulnerability. This update retains the fix for the vulnerability but issues a warning rather than throwing an exception. Code which produces this warning should be updated because future versions of the Python Cryptography Toolkit re-introduce the exception. We apologize for the inconvenience. Original advisory USN-3199-1 introduced a regression in the Python Cryptography Toolkit which caused programs which relied on the original behavior to fail.