IACR News item: 29 May 2012
Aleksandar Kircanski, Amr M. Youssef
ePrint Report
SM3 is a hash function designed by Xiaoyun Wang et al., and
published by the Chinese Commercial Cryptography Administration Office
for the use of electronic authentication service system. The design of
SM3 builds upon the design of the SHA-2 hash function, but introduces
additional strengthening features. In this paper, using a higher order
differential cryptanalysis approach, we present a practical 4-sum
distinguisher against the compression function of SM3 reduced to 32
rounds. In addition, we point out a slide-rotational property of
SM3-XOR, which exists due to the fact that constants used in the rounds
are not independent.
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