(Pseudo) Preimage Attack on Round-Reduced Grøstl Hash Function and Others (Extended Version)

  title={(Pseudo) Preimage Attack on Round-Reduced Gr\ostl Hash Function and Others (Extended Version)},
  author={Shuang Wu and Dengguo Feng and Wenling Wu and Jian Guo and Gaipeng Kong and Jian Zou},
  journal={IACR Cryptology ePrint Archive},
The Grøstl hash function is one of the 5 final round candidates of the SHA-3 competition hosted by NIST. In this paper, we study the preimage resistance of the Grøstl hash function. We propose pseudo preimage attacks on Grøstl hash function for both 256-bit and 512-bit versions, i.e., we need to choose the initial value in order to invert the hash function. Pseudo preimage attack on 5(out of 10)-round Grøstl-256 has a complexity of (2 , 2) (in time and memory) and pseudo preimage attack on 8… CONTINUE READING


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