Python-RSA is a pure-Python RSA implementation. It supports encryption and decryption, signing and verifying signatures, and key generation according to PKCS#1 version 1.5. It can be used as a Python library as well as on the commandline. The code was mostly written by Sybren A. Stüvel.
Documentation can be found at the Python-RSA homepage: http://stuvel.eu/rsa
Download and install using:
pip install rsa
or download it from the Python Package Index.
The source code is maintained in a Mercurial repository and is licensed under the Apache License, version 2.0