Re: Agree with PRZs MDC suggestion

Werner Koch says:
> > Because someone was suggesting that if anyone ever changed the algorithm
> > ID byte they could turn off the MDC.  That could be prevented by a
> Ah well, I think it is easier to put a copy of the version byte and
> the algorithm identifier into the encrypted text:
>
> E(random_prefix[blocksize+2],version_byte,algo_byte,plaintext,mdc_packet)
Yes. And we could require that MDC can *not* be turned off.
-- 
Regards,
Uri             uri(_at_)watson(_dot_)ibm(_dot_)com
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