Re: Encrypting textfiles from shell

[steve <steve%unliketea.com@localhost>]

I don't know I worked this out a while ago, so the dd may be totally 
unnecessary.  This intent was to used a drop box like server as a backup 
repository.  The dd does seem excessive.  I abandon the plan but keep 
some of the notes.  My guess the dd is to just count the data.

On Fri, 16 Dec 2011 08:34:12 +0100, Ian D. Leroux wrote:
> On Thu, Dec 15, 2011, at 13:47, steve wrote:
> > [root@unixfoo-lin23 ~]# tar cvzf - passwd_info.txt | openssl des3 
> > -salt
> > -k secretkey | dd of=encrypted_passwd_info
> > passwd_info.txt
> > 20+1 records in
> > 20+1 records out
> >
> > [root@unixfoo-lin12 ~]# dd if=encrypted_passwd_info |openssl des3 -d 
> > -k
> > secretkey |tar xvzf -
> > 20+1 records in
> > 20+1 records out
> > passwd_info.txt
>
> Out of curiosity and ignorance, why do you need to go through dd?  
> Would
> standard shell redirection not work?  I'm thinking of something like:
>   $ tar ... | openssl ... >encrypted_passwd_info
>
> Not critical, just intrigued.
>
> -- IDL