security/hs-crypto-pubkey/pkg-descr

   1 Public Key cryptography Supports RSA PKCS15, RSA OAEP, RSA PSS, DSA,
   2 ElGamal signature. Also have primitive support for Diffie Hellman, and
   3 ElGamal encryption.
   4
   5 WWW: http://github.com/vincenthz/hs-crypto-pubkey