RIPEMD

1 Specification

• digest size: 128 bits
• max. message length: < 2⁶⁴ bits
• compression function: 512-bit message block, 2 streams with each 128-bit chaining variable
• Specification:

2 Cryptanalysis

2.1 Best Known Results

The best collision attack on full RIPEMD was published by Wang et al. It has complexity of 2¹⁸ hash evaluations.

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2.2 Generic Attacks

• Generic Attacks on the Merkle-Damgaard Construction

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2.3 Collision Attacks

Xiaoyun Wang, Xuejia Lai, Dengguo Feng, Hui Chen, Xiuyuan Yu - Cryptanalysis of the Hash Functions MD4 and RIPEMD

EUROCRYPT 3494:1-18,2005

http://dx.doi.org/10.1007/11426639_1
Bibtex

Author : Xiaoyun Wang, Xuejia Lai, Dengguo Feng, Hui Chen, Xiuyuan Yu
Title : Cryptanalysis of the Hash Functions MD4 and RIPEMD
In : EUROCRYPT -
Address :
Date : 2005

Christophe Debaert, Henri Gilbert - The RIPEMD and RIPEMD Improved Variants of MD4 Are Not Collision Free

FSE 2355:52-65,2002

http://link.springer.de/link/service/series/0558/bibs/2355/23550052.htm
Bibtex

Author : Christophe Debaert, Henri Gilbert
Title : The RIPEMD and RIPEMD Improved Variants of MD4 Are Not Collision Free
In : FSE -
Address :
Date : 2002

Hans Dobbertin - RIPEMD with Two-Round Compress Function is Not Collision-Free

J. Cryptology 10(1):51-70,1997

http://dx.doi.org/10.1007/s001459900019
Bibtex

Author : Hans Dobbertin
Title : RIPEMD with Two-Round Compress Function is Not Collision-Free
In : J. Cryptology -
Address :
Date : 1997

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