Decrypt problem with large file

Thomas Pries thomas-pries at
Sun Nov 18 00:39:56 CET 2007


I encrypted a 420GB tgz-archive under SuSE 10.1 Linux with:

gpg -o /USBDISK/anc.tgz.gpg -c --ciper-algo AES256 abc.tgz

a few days later I try to decrypt the file on the same computer via:

gpg -d <./abc.tgz.gpg >./abc_a.tgz 
this decryption faild with errormessage:

:symkey enc packet: version 4, cipher 9, s2k 3, hash 2
        salt 43b51101569918f8, count 96
gpg: AES256 encrypted data
:encrypted data packet:
        length: unknown
        mdc_method: 2
gpg: encrypted with 1 passphrase
:literal data packet:
        mode b (62), created 1193559656, name="abc.tgz",
        raw data: unknown length
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 
and Windows but always the same error.

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

I found a thread discussing a similar decryption problem in the  Gnupg-users 
mail-archive from Oct 2005, but this thread focuses on the WinXP problem with 
large files an did not help solving my problem. 

Is there any possibility to recover my data?


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