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- W91031763 abstract "Since the seminal works of Merkle and Damgard on the iter- ation of compression functions, hash functions were built from compres- sion functions using the Merkle-Damgard construction. Recently, several flaws in this construction were identified, allowing for second pre-image attacks and chosen target pre-image attacks on such hash functions even when the underlying compression functions are secure. In this paper we propose the HAsh Iterative FrAmework (HAIFA). Our framework can fix many of the flaws while supporting several additional properties such as defining families of hash functions and supporting variable hash size. HAIFA allows for an online computation of the hash function in one pass with a fixed amount of memory independently of the size of the message. Besides our proposal, the recent attacks initiated research on the way compression functions are to be iterated. We show that most recent pro- posals such as randomized hashing, the enveloped Merkle-Damgard, and the RMC and ROX modes can be all be instantiated as part of the HAsh Iterative FrAmework (HAIFA)." @default.
- W91031763 created "2016-06-24" @default.
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- W91031763 date "2007-01-01" @default.
- W91031763 modified "2023-09-26" @default.
- W91031763 title "A Framework for Iterative Hash Functions — HAIFA ?" @default.
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