public int DoFinal(
byte[] output,
int outOff)
{
int blockSize = cipher.GetBlockSize();
if (padding == null)
{
// pad with zeroes
while (bufOff < blockSize)
{
buf[bufOff++] = 0;
}
}
else
{
if (bufOff == blockSize)
{
cipher.ProcessBlock(buf, 0, mac, 0);
bufOff = 0;
}
padding.AddPadding(buf, bufOff);
}
cipher.ProcessBlock(buf, 0, mac, 0);
// Added to code from base class
DesEngine deseng = new DesEngine();
deseng.Init(false, this.lastKey2);
deseng.ProcessBlock(mac, 0, mac, 0);
deseng.Init(true, this.lastKey3);
deseng.ProcessBlock(mac, 0, mac, 0);
// ****
Array.Copy(mac, 0, output, outOff, macSize);
Reset();
return macSize;
}
