PyCA cryptography 2.5 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 2.7, Python 3.4+, and PyPy. Changelog (https://cryptography.io/en/latest/changelog/#v2-6): - *BACKWARDS INCOMPATIBLE:* Removed cryptography.hazmat.primitives.asymmetric.utils.encode_rfc6979_signature and cryptography.hazmat.primitives.asymmetric.utils.decode_rfc6979_signature, which had been deprecated for nearly 4 years. Use encode_dss_signature() <https://cryptography.io/en/latest/hazmat/primitives/asymmetric/utils/#crypto...> and decode_dss_signature() <https://cryptography.io/en/latest/hazmat/primitives/asymmetric/utils/#crypto...> instead. - *BACKWARDS INCOMPATIBLE*: Removed cryptography.x509.Certificate.serial, which had been deprecated for nearly 3 years. Use serial_number <https://cryptography.io/en/latest/x509/reference/#cryptography.x509.Certific...> instead. - Updated Windows, macOS, and manylinux1 wheels to be compiled with OpenSSL 1.1.1b. - Added support for Ed448 signing <https://cryptography.io/en/latest/hazmat/primitives/asymmetric/ed448/> when using OpenSSL 1.1.1b or newer. - Added support for Ed25519 signing <https://cryptography.io/en/latest/hazmat/primitives/asymmetric/ed25519/> when using OpenSSL 1.1.1b or newer. - load_ssh_public_key() <https://cryptography.io/en/latest/hazmat/primitives/asymmetric/serialization...> can now load ed25519 public keys. - Add support for easily mapping an object identifier to its elliptic curve class viaget_curve_for_oid() <https://cryptography.io/en/latest/hazmat/primitives/asymmetric/ec/#cryptogra...> . - Add support for OpenSSL when compiled with the no-engine ( OPENSSL_NO_ENGINE) flag. Alex -- All that is necessary for evil to succeed is for good people to do nothing.