pyca/cryptography — pull request #463 by public (2014-01-11 23:39:49+00:00)
Title: WIP: PKCS#1 and PKCS#8 stuff for RSA

Based mostly on @reaperhulk's earlier work on asymmetric stuff.

This refactors the `to_pkcs8` etc stuff he had on individual RSAPrivateKey instances into dedicated PKCSEncoder/Decoder classes.

Doesn't include any actual encryption or signing stuff to keep the size of the PR down.