The cryptography package provides some basic cryptographic algorithms and protocols. This change set integrates algorithms implemented by several members of the Squeak community, including Leandro Caniglia, John Maloney, Duane Maxwell, Luciano Notarfrancesco and Carlos Sarraute. There isn't much documentation, but browsing the tests (CryptoTest) will give you a pretty good idea of how to use it. This package includes: - Symmetric key algorithms: DES, 3DES, AES (Rijndael), ARC4 - Block cipher modes: CBC, CFB, OFB - Hash functions: MD4, MD5, SHA1 - Public key algorithms: DSA, ElGamal, RSA - Other stuff: HMACs, Diffie-Hellman, a random pool, a secure prng, a primes finder