Re: [IWAR] CRYPTO Rivest; new techniques

From: Mark Hedges (hedgesat_private)
Date: Sun Mar 22 1998 - 00:54:36 PST

  • Next message: Mark Hedges: "[IWAR] CRYPTO winnowing and insecure key exchange"

    I wonder if there's a way to generate two different, dependent keys, one
    for signing valid packets and one for winnowing. Then both parties could
    exchange partial information which allows them to generate their own keys,
    dependent on each other, without revealing the whole picture (similar to
    the Diffie-Hellman key exchange with the funky mod stuff). Then they could
    switch keys every few minutes, too. Still no encrypted data exchanged.
    Slightly weak to man in the middle, I guess.
    I need to learn math.
    >>Is there a way to transfer the shared secret securely without encryption?
    >>If not, cryptofascist legislation would still hurt. Joe Everybody can't use
    >>diplomatic pouches.
    >For what I am planning, we will use person-to-person
    >physical passing of the key.  We will probably hold
    >yearly meetings, and I will give out four keys, with
    >a calandar date on which one is retired, and the next
    >one is gone to.

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