PyNaCl is a Python binding to the Networking and Cryptography library, a crypto library with the stated goal of improving usability, security and speed.
PyNaCl relies on libsodium, a portable C library which can be compiled on a variety of systems. It may already be available from your package manager.
Once libsodium is installed, PyNaCl can be installed by:
$ python setup.py install- Digital signatures
- Secret-key encryption
- Public-key encryption
- HMAC (coming soon)