private void CopyIn(Sha1Digest t)
        {
            base.CopyIn(t);

            H1 = t.H1;
            H2 = t.H2;
            H3 = t.H3;
            H4 = t.H4;
            H5 = t.H5;

            Array.Copy(t.X, 0, X, 0, t.X.Length);
            xOff = t.xOff;
        }
 /**
  * Copy constructor.  This will copy the state of the provided
  * message digest.
  */
 public Sha1Digest(Sha1Digest t)
     : base(t)
 {
     CopyIn(t);
 }
        public override void Reset(IMemoable other)
        {
            Sha1Digest d = (Sha1Digest)other;

            CopyIn(d);
        }