haskell
To store passwords securely, they should be salted,
then hashed with a slow hash function. This library
uses PBKDF1-SHA256, and handles all the details.
It uses the cryptohash package for speed; if you need
a pure Haskell library, pwstore-purehaskell has the
exact same API, but uses only pure Haskell. It is
about 25 times slower than this package, but still
quite usable.
PeterScott/pwstore