Decrypt problem with large file

Werner Koch wk at
Mon Nov 26 10:19:43 CET 2007

On Sun, 18 Nov 2007 00:39, thomas-pries at said:

> gpg: original file name='abc.tgz'
> gpg: packet(14) with unknown version 26
> gpg: WARNING: encrypted message has been manipulated!
> gpg: packet(6) with unknown version 139
> I repeated the decryption with different gpg versions (1.4.2, 2.0.4) on Linux 

I guess that the file got corrupted on the medium.  Hard disks are not
100% error free and with such a large file there is a chance that you
experienced a bit flip.

> I tryed --ignore-crc-error and --ignore-mdc-error but the decryption always 

The first is only good for the ascii armor which you don't use.
--ignore-mdc-error ignores error in the Manipulation Detection Code of
the data; not very useful either.

> mail-archive from Oct 2005, but this thread focuses on the WinXP problem with 
> large files an did not help solving my problem. 

That was probably something with a 2GB or 4GB edge condition or missing
support for large files.  Not your problem as you stated in the other
mail that you were able to decrypt about 30% of the 400GB file.

In theory we could add code to resync the parser again but Idount that
this will help you becuase yoyu would also need to fix the then
corrupted ZIP tarball.  Well, it can all be done but would take quite
some time to do and even more time for proper testing.



Die Gedanken sind frei.  Auschnahme regelt ein Bundeschgesetz.

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