I thought of zip as a good solution for achieving encrypted backups. But 
you are right here, it will lose metadata. My only requirements are that 
archives must be encrypted at the file level (forget encrypted volume) 
and that I can open those under Windows (using Winzip for example).

Nils Breunese (Lemonbit) wrote:
> Alexandre Joly wrote:
>
>   
>> This is a requirement here at my company to have encrypted archives  
>> for
>> off-site backup.
>>     
>
> Yeah, but Tino's question was why you'd want to use zip instead of a  
> compressed tarball, because metadata like permissions and ownership  
> can't be stored in a zip file (AFAIK). You could also create a tar  
> archive and encrypt that, right? Or store the archive on an encrypted  
> volume.
>
> Nils Breunese.
>
>   
>> Tino Schwarze wrote:
>>     
>>> On Tue, Apr 15, 2008 at 10:18:50AM -0400, Alexandre Joly wrote:
>>>
>>>       
>>>> Well, I can see WinZip 11 has support for 128- and 256-bit AES
>>>> encryption. PKZIP, on the other hand, is weak and can be cracked  
>>>> within
>>>> minutes.
>>>>
>>>> My initial question was, anyone ever modified BackupPC in order to
>>>> archive in ZIP format instead of bz2 or gzip?
>>>>
>>>>         
>>> Why would you want to do that? You loose lots of meta information by
>>> going to ZIP instead of tar.gz. Compression is inferior and every
>>> decent archive browser tool should support .tar.gz anyway.
>>>
>>> Bye,
>>>
>>> Tino.
>>>       
>
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-- 
Alexandre Joly <aj AT infodev DOT ca>
Network Administrator
Infodev Electronic Designers Intl
(418) 681-3539 ext. 153


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