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HsOpenSSL is an OpenSSL binding for Haskell. It can generate RSA and DSA keys, read and write PEM files, generate message digests, sign and verify messages, encrypt and decrypt messages. It has also some capabilities of creating SSL clients and servers. This package is in production use by a number of Haskell based systems and stable.

This library implements the RSA encryption and signature algorithms for arbitrarily-sized ByteStrings. While the implementations work, they are not necessarily the fastest ones on the planet. Particularly key generation. The algorithms included are based of RFC 3447, or the Public-Key Cryptography Standard for RSA, version 2.1 (a.k.a, PKCS#1 v2.1).

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-tuned libraries, like OpenSSL.

Certificates and Key reader/writer. At the moment only X509 certificate and unencrypted private key are supported, but will include PGP certificate and pkcs8 private keys.

Fast AES cipher implementation with advanced mode of operations. The modes of operations available are ECB (Electronic code book), CBC (Cipher block chaining), CTR (Counter), XTS (XEX with ciphertext stealing), GCM (Galois Counter Mode). The AES implementation uses AES-NI when available (on x86 and x86-64 architecture), but fallback gracefully to a software C implementation. The software implementation uses S-Boxes, which might suffer for cache timing issues. However do notes that most other known software implementations, including very popular one (openssl, gnutls) also uses same implementation. If it matters for your case, you should make sure you have AES-NI available, or you'll need to use a different implementation.

Cipher-aes128 is an implementation of AES and common modes of operation. It borrows Hanquez's C AES code (see 'cipher-aes') but is unique due to including compile-time detection of NI compiler support, a slightly more functional interface for GCM operations, exposure of 'Ptr' based operations via the .Internal module, and build-in crypto-api support. Cipher-aes128 was originally developed as "'cipher-aes' plus trampolines", which has since been adopted into cipher-aes.

Blowfish cipher primitives.

Camellia block cipher primitives.

DES and 3DES primitives.

Fast RC4 cipher implementation.