encrypting compression algorithms

[David Shaw]

On Sep 5, 2009, at 8:59 PM, M.B.Jr. wrote:

> Hi David, thank you.
>
>
> On Sat, Sep 5, 2009 at 1:11 PM, David Shaw<dshaw at jabberwocky.com>  
> wrote:
>> On Sep 4, 2009, at 12:53 PM, M.B.Jr. wrote:
>>
>>> How do I know which compression algorithm was used?
>>
>> Unless you've overridden the default, it is ZIP.
>>
>
>
> Ok but in this point, my doubt is about some command to check whether
> a "gpg" extension file is compressed and in case it is, which
> algorithm was used. Like (just an example):
>
> $ gpg --check-compression file.gpg
>
> Is there something like that?

Not really, but you could look at the debug output.  Try decrypting  
the file with "-vv" added to the command line.  If it is compressed,  
you'll see a line like ":compressed packet: algo=1".  Algo 1 is ZIP,  
algo 2 is ZLIB, algo 3 is BZIP2.

David