### 14. Cryptographic Services The modules described in this chapter implement various algorithms of a cryptographic nature. They are available at the discretion of the installation. Hardcore cypherpunks will probably find the cryptographic modules written by A.M. Kuchling of further interest; the package contains modules for various encryption algorithms, most notably AES. These modules are not distributed with Python but available separately. See the URL [http://www.pycrypto.org](http://www.pycrypto.org) for more information.