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From "Power-Netz \(Schwarz\)" <>
Subject AW: Security problem?
Date Fri, 07 Jun 2002 10:33:08 GMT
> In response to M. Schwarz, with public key encryption schemes
> know the clear
> text of really doesn't help very much at cracking the private key. Besides
> which, the user (presumably) knows what the price of the thing
> they are buy
> anyway right? So they know what the cleartext of the message is
> whether it's
> sent with the message or not.
> Although this does bring to my mind a real weakness in my suggestion. Once

no, they know only the price, not the form of the data, which of course
can be different in the encrypted data as in the clear text, which was my
weakness :)


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