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Re: Quor's cipher
Antonomasia <[email protected]> wrote:
> How are you planning to detect which bytes are passed in this way ?
> Chosen plaintext attacks would do it, and show where (a+b)^(a0+b0) == 0.
> Looks like you've just doubled our progress.
It doesn't take chosen plaintext, just known plaintext.
>
> If the key is reused with a different message I don't think there's a
> weakness. An IV is a good idea, but aren't we _attacking_ this thing ?
Lack of an IV is a problem with almost any cipher, but it seems especially
so here.