Re: Cyrus POP3 Issue

From: Rob Siemborski (no email)
Date: Thu Mar 10 2005 - 16:42:59 EST

  • Next message: Henrique de Moraes Holschuh: "Re: Cyrus POP3 Issue"

    On Fri, 4 Mar 2005, Henrique de Moraes Holschuh wrote:

    > On Thu, 03 Mar 2005, L. Mark Stone wrote:
    >> The POP server component is giving us a problem. It often fails to
    >> respond to connection requests in a timely manner, if at all. IMAP
    >
    > Disable APOP, or get SASL to use /dev/urandom like it should be doing in any
    > sane distribution (SASL is not generating long-term keys which would be a
    > good reason to use /dev/random).

    Almost right.

    SASL doesn't generate *keys* using this, it generates *nonces*, which are
    known to the attacker anyway, since they are transmitted in the clear
    anyway. It just matters that they don't repeat often enough to bother
    precomputing values for.

    If SASL was using this for key generation, then yes, most of the comments
    in this thread have merit.

    -Rob

    (Hmmm, its possible that the SRP plugin is using this for something else,
    I'm not familiar enough with SRP and would have to ask Ken).

    ---------------------------------------------------------------------
    Rob Siemborski

    ---
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  • Next message: Henrique de Moraes Holschuh: "Re: Cyrus POP3 Issue"





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