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    Highlights of the ICANNWatch Archive
    (June 1999 - March 2001)


    		 
    This discussion has been archived. No new comments can be posted.
    Building the alternative to DNS | Log in/Create an Account | Top | 26 comments | Search Discussion
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    Re: New layer, but little or no increase in latenc
    by Anonymous on Friday August 02 2002, @08:49AM (#8319)
    So far, I haven't conceived of a peer-to-peer implementation of handle mapping. It seems that I need a central authority to avoid collisions at the top level.


    To define a unique, collision free identifier isn't hard.
    Pick a large random number.

    But that won't protect against maliciousness.
    (Anyone could pick the same number on purpose.)
    To get around that, use an RSA public key.
    Then the creator and only the creator can sign the
    mapping information with the key.

    Since RSA keys tend to be very large, you can provide
    the MD5 hash of an RSA key instead. Call that the
    finger print of the key. The finger prints are about
    20-30 random characters and used as the handle.
    (38 digits if you use decimal),

    Anyone wishing to prove that a particular handle to
    IP mapping is valid can supply the key (which can be
    verified to be the correct key, since it hashes to the
    MD5 fingerprint/handle) and a digitally signed IP number.
    This could be a special service of the server that uses
    them, or it could be part of any database (including DNS).
    Anyone can cache these signed handle->IP messages,
    so they can be spread out in any of the peer to peer methods.

    [ Reply to This | Parent ]


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