Automating Collision Attacks on RIPEMD-160

ePrint Report: Automating Collision Attacks on RIPEMD-160

Yingxin Li, Fukang Liu, Gaoli Wang

As an ISO/IEC standard, the hash function RIPEMD-160 has been used to generate the Bitcoin address with SHA-256. However, due to the complex double-branch structure of RIPEMD-160, the best collision attack only reaches 36 out of 80 steps of RIPEMD-160, and the best semi-free-start (SFS) collision attack only reaches 40 steps. To improve the 36-step collision attack proposed at EUROCRYPT 2023, we explored the possibility of using …

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