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Paper 2008/407
Indifferentiable Security Analysis of choppfMD, chopMD, a chopMDP, chopWPH, chopNI, chopEMD, chopCS, and chopESh Hash Domain Extensions
Donghoon Chang and Jaechul Sung and Seokhie Hong and Sangjin Lee
Abstract
We provide simple and unified indifferentiable security analyses of choppfMD, chopMD, a chopMDP (where the permutation $P$ is to be xored with any non-zero constant.), chopWPH (the chopped version of Wide-Pipe Hash proposed in \cite{Lucks05}), chopEMD, chopNI, chopCS, chopESh hash domain extensions. Even though there are security analysis of them in the case of no-bit chopping (i.e., $s=0$), there is no unified way to give security proofs. All our proofs in this paper follow the technique introduced in \cite{BeDaPeAs08}. These proofs are simple and easy to follow.
Metadata
- Available format(s)
-
PDF
PS
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Hash FunctionDomain ExtensionRandom OracleIndifferentiability
- Contact author(s)
- pointchang @ gmail com
- History
- 2008-12-12: last of 2 revisions
- 2008-09-24: received
- See all versions
- Short URL
- https://ia.cr/2008/407
- License
-
CC BY
