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Re: Problem+fix in Zero Message Master Key update


Amir said:
     ... It is simple to solve this (also more efficiently) by
     
             Kijn=h(g^ij,n)
     
     where h is our favorite one way hash (i.e. MD5...)

This is essentially the X9.42 variant of Diffie-Hellman.  The biggest difference
is that they include an identifier to name the hash function in the data that is
hashed.

Russ