| static private Permutation ( byte input, byte output, uint permTab, bool preSwap ) : void | ||
| input | byte | |
| output | byte | |
| permTab | uint | |
| preSwap | bool | |
| return | void | |
// note: this method is garanteed to be called with a valid blocksize
// for both input and output
protected override void ECB(byte[] input, byte[] output)
{
DESTransform.Permutation(input, output, DESTransform.ipTab, false);
if (encrypt)
{
E1.ProcessBlock(output, output);
D2.ProcessBlock(output, output);
E3.ProcessBlock(output, output);
}
else
{
D1.ProcessBlock(output, output);
E2.ProcessBlock(output, output);
D3.ProcessBlock(output, output);
}
DESTransform.Permutation(output, output, DESTransform.fpTab, true);
}
protected override void ECB(byte[] input, byte[] output)
{
DESTransform.Permutation(input, output, DESTransform.ipTab, false);
this.ProcessBlock(output, this.byteBuff);
DESTransform.Permutation(this.byteBuff, output, DESTransform.fpTab, true);
}