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Date: Mon, 10 Mar 2014 14:22:53 +0100 (CET)
From: Stefan.Lucks@...-weimar.de
To: discussions@...sword-hashing.net
Subject: Re: [PHC] Upgrade HKDF to HKDF2?
>> Consider, e.g., passwords such as "abcd", "abcdabcd", "abcdabcdabcd" ...
>>
>
> That's why PBKDF2 hash has collisions for this reason,
For another reason
> but I'm prepending all lengths with an extra Update call before adding
> padded data. This should eliminate the collision problem, shouldn't it?
Agreed, that seems to solve the problem.
Stefan
------ I love the taste of Cryptanalysis in the morning! ------
<http://www.uni-weimar.de/cms/medien/mediensicherheit/home.html>
--Stefan.Lucks (at) uni-weimar.de, Bauhaus-Universität Weimar, Germany--
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