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Why is an MD5 hash created by Python different from one created using echo and md5sum in the shell?

A Python MD5 hash is different than the one created by the md5sum command on the shell. Why?

>>> import hashlib >>> h = hashlib.md5() >>> h.update("mystringforhash") >>> print h.hexdigest() 86b6423cb6d211734fc7d81bbc5e11d3 # Result from Python   $ echo mystringforhash | md5sum 686687dd68c5de717b34569dbfb8d3c3  - # Result on the shell 
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mailGO Avatar asked Apr 17 '11 11:04

mailGO


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1 Answers

echo appends a \n since you usually do not want lines not ending with a linebreak in your shell (it looks really ugly if the prompt does not start at the very left).
Use the -n argument to omit the trailing linebreak and it will print the same checksum as your python script:

> echo -n mystringforhash | md5sum 86b6423cb6d211734fc7d81bbc5e11d3  - 
like image 163
ThiefMaster Avatar answered Sep 30 '22 16:09

ThiefMaster