Differing File Sizes & GPG Symmetric Decryption Failure After ~4G

[David Shaw]

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On Wed, Jul 02, 2003 at 08:46:12AM -0400, Packard, Matthew wrote:

>    But my new question is this - I searched through the man pages, the 
> FAQ, Google, etc. and did not find any switches relating to the partial 
> length headers option you mention. So, does that mean that GPG performs 
> this under the hood, or do I need to supply a switch on 
> encryption/decryption that will enable this?

Under the hood.  It's an encoding method used when the size of the
file is not known (usually because the file came in via a pipe).  It
also is needed to handle >4G files.

> Also, is my current ~8G file no good after ~4G, since it doesn't
> look like I used partial length headers for the original encryption
> (not a big deal if the file is unusable, but it'd be nice to recover
> it)?

Your current file is going to be unusable.  If the file contents were
critical, you *might* be able to hack a copy of GnuPG to handle it,
but if you say it is not a big deal, then it's probably not worth the
effort.

David
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