Trouble decrypting AES256 symmetric encrypted 4.58 GB file

JIH, DOUG Y. doug.jih at
Sun Sep 18 21:37:40 CEST 2005

I got the following messages when I tried to decrypt a file.gpg with
the size 4,920,412,393 bytes using gpg version 1.4.2, official Windows version:

>gpg -vv -o file --decrypt file.gpg
:symkey enc packet: version 4, cipher 9, s2k 3, hash 2
        salt 5088796db832388a, count 96
gpg: AES256 encrypted data
:encrypted data packet:
        length: unknown
        mdc_method: 2
gpg: encrypted with 1 passphrase
:compressed packet: algo=1
:literal data packet:
        mode b (62), created 1126887210, name="file",
        raw data: 614055611 bytes
gpg: original file name='file'
gpg: [don't know]: invalid packet (ctb=7e)
gpg: [don't know]: invalid packet (ctb=32)
gpg: WARNING: encrypted message has been manipulated!
:unknown packet: type 59, length 35
dump: 59 71 71 c4 24 29 4c 5e  ee 7f e4 11 4d 3d 1a 78  08 6a e7 70 51 9d 0f 96
  24: 69 7a a3 fb 18 bb 14 15  0c bd 58
gpg: [don't know]: invalid packet (ctb=2c)

GPG failed when the output file has a size of 614,055,611 bytes.  I
noticed this is exactly the number of bytes shown by "raw data:" in
the above messages.   Is this a flaw in GPG?  It's hard to believe GPG
would have a serious flaw like this, because there was absolutely no
error message when I encrypted the file, and now GPG is unable to
decrypt the file to its ooriginal size?

Can anyone please help me recover my data!  Thanks.

More information about the Gnupg-users mailing list