Message Recovery and Pseudo-preimage Attacks on the Compression Function of Hamsi-256

Date

2010-08-11

Author

Calik, Cagdas
Turan, Meltem Sonmez

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Hamsi is one of the second round candidates of the SHA-3 competition In this study, we present non-random differential properties for the compression function of Hamsi-256 Based on these properties, we first demonstrate a distinguishing attack that requires a few evaluations of the compression function Then, we present a message recovery attack with a complexity of 210 48 compression function evaluations Also, we present a pseudo-preimage attack for the compression function with complexity 2(254 25)

URI

https://hdl.handle.net/11511/64883

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Graduate School of Applied Mathematics, Conference / Seminar