On Mon, 26 Aug 2019 17:42:35 +0000, Seymour J Metz <sme...@gmu.edu> wrote:

>RSA only involves two primes. See 
>https://en.wikipedia.org/wiki/RSA_(cryptosystem)

________________________________________
From: Jon Perryman
Sent: Saturday, August 24, 2019 4:29 PM

 I vaguely recall that there was a third prime number involved in the algorithm 
that was static for RSA. Do they still have this third prime? Could it be that 
they use this to eliminate this possibility?

Are you thinking, perhaps, of Diffie-Hellman?
    
https://en.wikipedia.org/wiki/Diffie%E2%80%93Hellman_key_exchange#General_overview

-- gil

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