KnowledgeBase 00065: MD5 Message Digest

Last updated: 17 Feb 2017 Applies to: All versions

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This article was originally published as a Tip of the Week.

The MD5 Message Digest algorithm constructs a 128 bit hash value that can be used for non-reversable cryptography (e.g. passwords) or for data integrity checks. MD5 is a widely used industry standard.

The MD5() Function

QM provides an MD5() function that takes a character string argument and returns a 32 digit hexadecimal representation of the MD5 hash value. For compatibility with common usage of MD5, the hexadecimal value uses lowercase letters.

   DISPLAY MD5('Example message') 

The above QMBasic statement would display

   ed1e45651fb3f89efa444649006009fa 

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