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New Collision Attacks on Round-Reduced Keccak
2017In this paper, we focus on collision attacks against Keccak hash function family and some of its variants. Following the framework developed by Dinur et al. at FSE 2012 where 4-round collisions were found by combining 3-round differential trails and 1-round connectors, we extend the connectors one round further hence achieve collision attacks for up to
Meicheng Liu +4 more
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Bit-Free Collision: Application to APOP Attack
2009This paper proposes a new variant of collisions on hash functions named bit-free collision , which can be applied to reduce the number of chosen challenges in password recovery attacks on hash-based challenge and response protocols, such as APOP (Authentication Post Office Protocol).
Yu Sasaki +3 more
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Collision Attack on the Hamsi-256 Compression Function
2012Hamsi-256 is a cryptographic hash functions submitted by Kucuk to the NIST SHA-3 competition in 2008. It was selected by NIST as one of the 14 round 2 candidates in 2009. Even though Hamsi-256 did not make it to the final round in 2010 it is still an interesting target for cryptanalysts.
Mario Lamberger +2 more
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