protected void CopyIn(GeneralDigest t)
{
Array.Copy(t.xBuf, 0, xBuf, 0, t.xBuf.Length);
xBufOff = t.xBufOff;
byteCount = t.byteCount;
}
internal GeneralDigest(GeneralDigest t)
{
xBuf = new byte[t.xBuf.Length];
CopyIn(t);
}