PyCA cryptography 3.4.1 has been released to PyPI. cryptography includes both high level recipes and low level interfaces to common cryptographic algorithms such as symmetric ciphers, asymmetric algorithms, message digests, X509, key derivation functions, and much more. We support Python 3.6+, and PyPy3. Changelog (https://cryptography.io/en/latest/changelog.html#v3-4-1): * Fixed a circular import issue. * Added additional debug output to assist users seeing installation errors due to outdated pip or missing rustc. -Paul Kehrer (reaperhulk)