This is a wrapper around <http://hackage.haskell.org/package/crypto-api>
and related libraries that currently does fingerprint generation, signature
generation, and signature verification (for RSA and DSA keys).

It is indended to be used with <http://hackage.haskell.org/package/openpgp>

It is intended that you use qualified imports with this library.

> import qualified Data.OpenPGP.CryptoAPI as OpenPGP