At 10:02 AM 5/24/01 -0700, Terry Cooper wrote:
>Does anyone have any ideas on the best forum to elaborate on the following
>idea? I'm obviously presenting it here in shortened form (so someone might
>actually read the message), but would like to provide more details.
>
>For a fairly long amount of time, conventional computers will be able to
>prepare keys long enough to defeat decryption by quantum computers. But
>public key encryption can survive regardless of how advanced quantum
>computers get.
Nice proposal, if a bit early :-).
Isn't it also the case that secret-key encryption can survive, by increasing
the keylength such that the search space is larger than state-of-the-art
Quantumputers'
can handle?
Admittedly, designing those future huge-secret-key ciphers is much tougher
than your
clever 5/6 squared PK construction.
But necessary, too, if you use a hybrid (one-time secret key sent with PK)
system.
Otherwise the Quantumputers can brute force the smaller secret key.
dh
