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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:17:20 ADT
Mordechai Ovits (movits@syndata.com)
Tue, 12 May 1998 16:10:31 -0400
Ryan Anderson wrote:
> Note that any of the 2^n plaintexts cna be reconstructed from the
> following sequence of triples. (Assuming no knowledge of the MAC. The
> attacker has no idea which of each pair of triples related to each
> sequence is correct, so he must search every possibility, which turns out
> to be each of the 2^n plaintexts.)
OK, but to be technically correct, you arent *transmitting* all 2^n
possibilities. That would be like saying that when you blowfish encrypt a
64-bit block and send it, you are sending all 2^64 plaintext, because given
all 2^128 possible keys you will cover the entire "plaintext-space". while
it is crucial to make sure that you leave the possible decryptions
exponential, you are not transmitting all possible plaintests. That would
be .... uhhh... bad.
-- o Mordy Ovits o Programmer / Cryptographer o SynData Technologies Inc. o Download A Free Copy Of Our Software At: o http://www.syncrypt.com
The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:17:20 ADT