M2Crypto is the most complete Python wrapper for OpenSSL featuring RSA, DSA, DH,
HMACs, message digests, symmetric ciphers (including AES); SSL functionality to
implement clients and servers; HTTPS extensions to Python's httplib, urllib, and
xmlrpclib; unforgeable HMAC'ing AuthCookies for web session management; FTP/TLS
client and server; S/MIME; ZServerSSL: A HTTPS server for Zope and ZSmime: An
S/MIME messenger for Zope.