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SubjectRe: predictable IP ID
Savochkin Andrey Vladimirovich <> 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
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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