libghc-crypto-pubkey-dev 0.2.1-1build2 (powerpc binary) in ubuntu trusty

 Public-key cryptographic routines supporting RSA PKCS15, RSA OAEP,
 RSA PSS, DSA, ElGamal signature. Also includes primitive support for
 Diffie Hellman, and ElGamal encryption.
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.