If you're filing a bug (as opposed to a feature request), please try the following things:

• Check the FAQ to see if your issue is covered there: https://cryptography.io/en/latest/faq.html
• Upgrade to the latest version of setuptools and pip
• Make sure you're on a supported version of OpenSSL
• Try with the latest version of cryptography
• Be sure you have the required compilers (both a C compiler and Rust) installed if you aren't using the binary wheels.

If none of that works, please make sure to include the following information in your bug report:

• Versions of Python, cryptography, cffi, pip, and setuptools you're using
• How you installed cryptography
• Clear steps for reproducing your bug

Please do not report security issues on Github! Follow the instructions in our documentation for reporting security issues: https://cryptography.io/en/latest/security.html