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Best encryption / compression to use for MOSS?

Blocat Best encryption / compression to use for MOSS?

  • Donnerstag, 1. Juli 2010 14:39
     
     
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    Hi,

    I'm looking to encrypt files (and possibly compress) files than can be stored in a MOSS document library.

    Currently compressing a 144MB file in WinZIP with 256-BIT AES encyrption causes the error message "Large uncompressed size" (detecting the file as having a virus).

    Is there any encryption method (and compression) that could be used as an alternative?

       

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    • Freitag, 2. Juli 2010 08:00
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      Hi,

       

      Thank you for the post.

       

      This issue is caused by the file is larger than 100 MB.  To resolve this issue, you should  alter the following registry keys:

      For 32-bit systems:
      · HKLM\SOFTWARE\Microsoft\Forefront Server Security\SharePoint

      For 64-bit systems:
      · HKLM\SOFTWARE\Wow6432Node\Microsoft\Forefront Server Security\SharePoint

      MaxUncompressedFileSize - This key sets the maximum uncompressed file size for a file within a .zip or a RAR archive file. Files larger than the maximum permitted size are deleted and reported as “Large Uncompressed File Size” virus. The default setting is 100 MB. For more information, please refer to the following article.

       

      http://support.microsoft.com/kb/972074

       

      Regards,

      Nick Gu - MSFT
         
      • Freitag, 9. Juli 2010 15:22
         
         
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        Thanks.

        Is there any reason it is set at 100MB by default? i.e. would a limit of 150MB / 200MB give an increased security risk?