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Reproducing a hash code

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82963] Reproducing a hash code
  • From: "Steve Luttrell" <steve at _removemefirst_luttrell.org.uk>
  • Date: Mon, 5 Nov 2007 05:00:00 -0500 (EST)

I am trying to get results from Mathematica's Hash function (for hash type 
"MD5") that are consistent with the results obtained using "openssl md5" in 
Linux.

The particular example I would like to reproduce is on 
http://wiki.secondlife.com/wiki/LlMD5String, where

"Hello, Avatar!:0"

hashes to (for hash type "MD5")

112abd47ceaae1c05a826828650434a6

In Mathematica 6 (Windows Vista, Intel hardware), doing the obvious

Hash["Hello, Avatar!:0", "MD5"] // BaseForm[#, 16] &

I get the following result

a8c2ab1662a37cb9f8ea5af154a48c52

This is not the same as expected. Does anyone know how to get consistent 
results?

-- 
Steve Luttrell
West Malvern, UK



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