Re: IS this for real?!

From: Undisclosed (nomail_at_dontbeaweaselspammer.com)
Date: 08/15/04

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    Date: Sun, 15 Aug 2004 01:06:17 -0400

    Simon Johnson wrote:

    >
    > Rest assured though, when QC comes quantum secure key-exchange lines
    > will be widely deployed decades before. Most areas are now becoming
    > fiber wired so the intrastructure is already there. If used in a
    > one-time pad set-up then QC can't hope to decrypt those messages.

    couple of questions...

    1. what if this doesn't happen?

    are there any mathematical algorithms currently known or suspected that
    can replace factoring large primes and the discrete algorithm for public
    key?

    2. what about places where fiber lines are not feasible?

    I've heard about limited open-air transmission of quanta...

    but what could, for instance, a large radio installation that needs the
    properties of public keys and can't predistribute QC-exchanged keys use?

    also, the next frontier is space....

    I don't think you can transmit a quanta over a interplanetary distance. ;)

    > Far from the end of cryptography - it will see the conclusion of the
    > mathematical battle between code-maker and code-breaker.
    >
    > Simon.

    until cryptographers start finding holes in the laws of physics. ;) ;)

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