haskell-crypto-simple

A simple high level encryption interface based on cryptonite

Usage

> import Crypto.Simple.CBC (encrypt, decrypt) 
> import Data.ByteString.Char8 (pack)
> let key = pack "my secret key"
> let msg = pack "this is a message"
> encrypt key msg >>= \secretMsg -> decrypt key secretMsg
"this is a message"

Implementation

The implementation is based on some good defaults

• The cipher that's used is AES 256
• You can choose between CBC or CTR cipher modes (modules Crypto.Simple.CBC and Crypto.Simple.CTR)
• If you use CBC, it will pad/unpad the message using the PKCS7 padding scheme
• The entropy method used for the initialization vector is the default system-level CSPRNG (ie. /dev/random). It is based on Crypto.Random.Entropy.getEntropy
• The maximum size for the encryption key is 32 bytes