[rc5] Suggestion for protocol
aj at humbug.org.au
Wed Jun 25 23:09:45 EDT 1997
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On Mon, 23 Jun 1997, Remi Guyomarch wrote:
> Thus the proxy should test the client's speed to see if there is any
> difference. Sounds delicate to do automagically...
Seems nasty for firewalled computers that are only accessible from the
proxy servers by a personal proxy. Buffering clients would have a
Could also be nasty for multi-processor machines. ``Your key rate is
500,000! What do you mean it takes you 40 minutes to do this piddly
I also think verifying that the client performs the decryption is less
than wonderful. We want to verify that their answer "this block does
(not) contain a candidate key" is correct.
``So, you looked through the block?''
``Okay. Lie detector test's over. Find anything?''
There was some similar discussion on coderpunks a while before the
competition began, as I recall. I'm not sure if it was for DES, RSA,
RC5 or something entirely different. No one happens to remember any
details? Was anything done in the DES competition?
Anthony Towns <aj at humbug.org.au> <http://student.uq.edu.au/~s343676/>
I don't speak for anyone save myself. PGP encrypted mail preferred.
``Like the ski resort of girls looking for husbands and husbands looking
for girls, the situation is not as symmetrical as it might seem.''
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Comment: Key available at http://student.uq.edu.au/~s343676/aj_key.asc
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