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Erschienen in:
2006 | OriginalPaper | Buchkapitel
Some Plausible Constructions of Double-Block-Length Hash Functions
verfasst von : Shoichi Hirose
Erschienen in: Fast Software Encryption
Verlag: Springer Berlin Heidelberg
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In this article, it is discussed how to construct a compression function with 2
n
-bit output using a component function with
n
-bit output. The component function is either a smaller compression function or a block cipher. Some constructions are presented which compose collision-resistant hash functions: Any collision-finding attack on them is at most as efficient as the birthday attack in the random oracle model or in the ideal cipher model. A new security notion is also introduced, which we call indistinguishability in the iteration, with a construction satisfying the notion.