efficient cryptographic hash implementations bytestrings; documentation

 This package provides efficient cryptographic hash implementations for strict
 and lazy bytestrings. For now, CRC32 and Adler32 are supported; they are
 implemented as FFI bindings to efficient code from zlib.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.