API is Encrypt(data,key) and Decrypt(data,key). There's no IV. It's just a block cipher. Once you start adding things like CTR mode, MAC, etc. the API is no lo

API is Encrypt(data,key) and Decrypt(data,key). There's no IV. It's just a block cipher. Once you start adding things like CTR mode, MAC, etc. the API is no longer as simple.