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Grøstl[1] is one of the second round candidates of the SHA-3 competition[2] hosted by NIST, which aims to find a new hash standard. In this paper, we studied equivalent expressions of the generalized AES-like permutation. We found that four rounds of the AES-like permutation can be regarded as a Hyper-Sbox. Then we further analyzed the differential properties of both Super-Sbox and Hyper-Sbox. Based...
In December of 2010 NIST selected five SHA-3 finalists — BLAKE, Grøstl, JH, Keccak, and Skein to advance to the third (and final) round of the SHA-3 competition. At present most specialists and scholars focus on the design and the attacks on these hash functions. However, it is very significant to study some properties of their primitives and underlying permutations. Because some properties reflect...
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