Snaha vysv?tlit ?ínský útok na MD5 & spol.
14.10.2004Rozsáhlý, 76 stránkový, ?lánek na eprintu IACR uvažující o tom, jak ?í?ani asi konstruovali nebo nekonstruovali sv?j útok:
Musings on the Wang et al. MD5 Collision
Philip Hawkes , Michael Paddon , and Gregory G. Rose
Abstract. Wang et al [12] caused great excitement at CRYPTO2004
when they announced a collision for MD5 [11]. This paper examines
the internal differences and conditions required for the attack to be suc-cessful.
There are a large number of conditions that must be satisfied,
thus indicating Wang at al. have found a clever way to generate message
pairs for which the conditions are satisfied. The large number of conditions
suggests that an attacker cannot use these differentials to cause sec-ond
pre-image attacks with complexity less than generic attacks. Initial
examination also suggests that an attacker cannot cause such collisions
for HMAC-MD5 [9] with complexity less than generic attacks.
Disclaimer: This document notes some observations of the authors regarding
the collisions generated by Wang et al.. We do not claim to have any new
discoveries in this paper. However, we hope that this paper provides a useful
explanation until the time when Wang et al. publish a detailed analysis of their
discoveries. This is a very rough description and is not intended as a publication.
There has been a focus more on content than presentation.
S trochou humoru by p?ísp?vek šel zhodnotit asi takhle:
Zkrátka, nep?išli na to, jak na to dr.Wangová a kol. p?išli. Ale p?išli na to, že tak, jak na to šli oni, tak na to ?í?ani jít nemohli, protože tudy cesta nevede. Nicmén? p?edveli diferenciální maratón na 76 stranách. Škoda. Jen nás víc napnuli, kde je ten pes zakopanej.
Zdroj: http://eprint.iacr.org/2004/264/Autor: VK
Heuristické vyhledání souvisejících článků v archívu NEWS
Pozor - není zdaleka přesné a výsledek je bez záruky...
Chcete-li článek obsahující konkrétní termín - pou·ijte funkci
vyhledávání !
