The RACE Integrity Primitives Evaluation Message Digest (RIPEMD) is a family of cryptographic hash functions, first published in 1996. RIPEMD was based upon the design principles used in MD4, and is similar in performance to the more popular SHA-1. RIPEMD-160 is an improved, 160-bit version of the original RIPEMD, and the most common version in the family. In August 2004, a collision was reported for the original RIPEMD. Yet, this does not apply to RIPEMD-160.

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