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Topic: CRC32 Hash Missmatch
Replies: 2   Last Post: Jul 21, 2013 9:30 PM

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roby.nowak@gmail.com

Posts: 87
Registered: 5/8/07
Re: CRC32 Hash Missmatch
Posted: Jul 21, 2013 9:30 PM
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Am Donnerstag, 18. Juli 2013 08:43:21 UTC+2 schrieb roby:
> Dear Group,
>
>
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> I am trying to calculate a CRC 32 checksum with Mathematica 7, it seems that:
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> Hash[data, "CRC32"]
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> gives different values opposed to:
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> FileHash["datafile", "CRC32"]
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> In[613]:=
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> "Hello, World!"//
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> StringToStream //
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> FileHash[#, "CRC32"]& // IntegerString[#, 16, 8]&
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> Out[613]= "ec4ac3d0"
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> In[615]:= "Hello, World!"//
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> Hash[#, "CRC32"]& // IntegerString[#, 16, 8]&
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> Out[615]= "a776c351"
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> Bug or feature or different generating polynomial ???


Thank you for all your replies,
It seems that starting with Mathematica 8 the issue has been fixed.

Robert




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