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Re: RISKS: Compuserve "secure" login
> A couple years ago I found an obvious application of Diffie-Hellman which
> avoids this problem; unfortunately it turned out to be patented by someone
> from Siemens (first as a German patent and then a US patent, so it's
> definitely too much trouble to try to overturn the patent...)
> The basic approach is to use a commutative hash function, which lets
> both sides calculate HA(B) == HB(A) ; modular exponentiation worked fine.
Any chance that you're willing to discuss this further?
--
Jim Thompson / Smallworks, Inc. / [email protected]
512 338 0619 phone / 512 338 0625 fax
The Internet is Microsoft's Vietnam...