Haskell SHA suite of message digest functions

 This library implements the SHA suite of message digest functions,
 according to NIST FIPS 180-2 (with the SHA-224 addendum), as well
 as the SHA-based HMAC routines.
 .
 The functions have been tested against most of the NIST and RFC test
 vectors for the various functions. While some attention has been paid
 to performance, these do not presently reach the speed of well-tune
 libraries, like OpenSSL.
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.