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Multicollision Attacks on Generalized Hash Functions
Authors: M. Nandi, D. R. StinsonAbstract:
In a recent paper in crypto-04, A. Joux showed a
multicollision attacks on the classical iterated hash function. He
also showed how the multicollision attack can be used to get a
collision attack on the concatenated hash function. In this paper
we have shown that the multicollision attacks exist in a general
class of sequential or tree based hash functions even if message
blocks are used twice unlike the classical hash function.
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