A generic interface for cryptographic operations (hashes, ciphers,
randomness). Maintainers of hash and cipher implementations are encouraged
to add instances for the classes defined in Crypto.Classes. Crypto users
are similarly encouraged to use the interfaces defined in the Classes
module. Any concepts or functions of general use to more than one
cryptographic algorithm (ex: padding) is within scope of this package.

Homepage:
http://hackage.haskell.org/package/crypto-api
