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libch Version 0.25: A Library for Fast One-Way Hashing on the Pentium

Portable Edition

Public Domain Software Written by Leonard Janke in 1996-7

Abstract

libch is a library inspired by Bosselaers, Govaerts, and Vandewalle's paper Fast Hashing on the Pentium [BGV] and the improvements in speed claimed [BOS] since then. Included are

The assembly functions provided are all faster than [BGV] and are reasonably close to [BOS] as indicated by the following table of cycle counts:

hash libch [BOS] libch/[BOS]
md5 353 345 1.02
sha0 863 N/A N/A
sha1 895 837 1.07
rmd128 618 597 1.04
rmd160 1040 1016 1.02

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