%0 Journal Article
%T Multicollision Attack on a recently proposed hash function vMDC-2
%J Journal of Computing and Security
%I University of Isfahan & Iranian Society of Cryptology
%Z 2322-4460
%A Zolfaghari, Zahra
%A Asadollahi, Hamid
%A Bagheri, Nasour
%D 2016
%\ 10/01/2016
%V 3
%N 4
%P 211-215
%! Multicollision Attack on a recently proposed hash function vMDC-2
%K DBL Compression Function
%K Iterated Hash Function
%K Multicollision Attack
%K Collision Attack
%R
%X In this paper, we describe an attack on a new double block length hash function which was proposed as a variant of MDC-2 and MDC-4. The vMDC-2 compression function is based on two calls to a block cipher that compresses a 3n-bit string to a 2n-bit one. This attack is based on the Joux's multicollision attack, where we show that an adversary wins finding collision game by requesting $2^{70}$ queries for $ n=128$-bit block cipher that is much less than the complexity of birthday attack.
%U http://jcomsec.ui.ac.ir/article_22575_d9afd4a4e3982aa266b142bb10981c38.pdf