protected override byte[] HashFinal()
{
if (_disposed)
{
throw new ObjectDisposedException("HMAC");
}
State = 0;
Block.Final();
byte[] intermediate = _algo.Hash;
byte[] buf = KeySetup(Key, 0x5C);
_algo.Initialize();
_algo.TransformBlock(buf, 0, buf.Length, buf, 0);
_algo.TransformFinalBlock(intermediate, 0, intermediate.Length);
byte[] hash = _algo.Hash;
_algo.Initialize();
// zeroize sensitive data
Array.Clear(buf, 0, buf.Length);
Array.Clear(intermediate, 0, intermediate.Length);
return(hash);
}
