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MD5

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Revision as of 05:08, 27 February 2007 by Jessek (Talk | contribs) (Updated text)

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The Message-Digest algorithm 5 (MD5) is a cryptographic hash function that produces a 128-bit hash value. Originally developed in 1991, much as has been written about this algorithm. As such, this article concentrates only on its application to computer forensics.

Tools

On most Unix systems the tools md5 or md5sum can be used to compute the MD5 hash of a file or device. md5deep can compute MD5 hashes of whole directory trees.

Weaknesses

Recently some cryptographic weaknesses have been found in MD5. Tool developers should avoid using MD5 in new products in favor of other hash functions like SHA-1 or SHA-256.

External Links