<init>

SessionTransportTransformerMessageAuthentication(
    key: ByteArray,
    algorithm: String = "HmacSHA256")
SessionTransportTransformerMessageAuthentication(
    keySpec: SecretKeySpec,
    algorithm: String = "HmacSHA256")

Session transformer that appends an algorithm MAC (Message Authentication Code) hash of the input. Where the input is either a session contents or a previous transformation. It uses a specified keySpec when generating the Mac hash.