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Title:
Colliding Message Pair for 53-Step HAS-160
Authors: Florian Mendel
Abstract:We present a collision attack on the hash function HAS-160 reduced to 53-steps. The attack has a complexity of about 2^{35} hash computations. The attack is based on the work of Cho etal. presented at ICISC 2006. In this article, we improve their attack complexity by a factor of about 2^{20} using a slightly different strategy for message modification in the first 20 steps of the hash function.
ePrint: https://eprint.iacr.org/2006/334
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