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    SubjectRe: predictable IP ID
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    Savochkin Andrey Vladimirovich <saw@msu.ru> said:

    [...]

    > Now we have a strong RND based generator for the first ID for a peer. But
    > its fairly slow (MD4 hash) and can't be used for every packet. Strength of
    > the generator and requirements for a guaranteed long period contradicts each
    > other.

    Wasn't the /dev/random stuff invented exactly for this kind of uses? I'd
    assume you can bypass the MD hash here, and just steal a byte or two
    directly from the entropy pool.
    --
    Dr. Horst H. von Brand mailto:vonbrand@inf.utfsm.cl
    Departamento de Informatica Fono: +56 32 654431
    Universidad Tecnica Federico Santa Maria +56 32 654239
    Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513


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