Analysis of BLAKE2

@inproceedings{Guo2013AnalysisOB,
  title={Analysis of BLAKE2},
  author={Jian Guo and Pierre Karpman and Ivica Nikolic and Lei Wang and Shuang Wu},
  booktitle={IACR Cryptology ePrint Archive},
  year={2013}
}
We present a thorough security analysis of the hash function family BLAKE2, a recently proposed and already in use tweaked version of the SHA-3 finalist BLAKE. We study how existing attacks on BLAKE apply to BLAKE2 and to what extent the modifications impact the attacks. We design and run two improved searches for (impossible) differential attacks — the outcomes suggest higher number of attacked rounds in the case of impossible differentials (in fact we improve the best results for BLAKE as… CONTINUE READING

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