On Wed, Jun 05, 2002 at 03:33:23AM -0700, 'jw schultz' wrote: > On Wed, Jun 05, 2002 at 12:21:18PM +0200, C.Zimmermann wrote: > > > > > > If you want them stored on the destination encrypted you > > > > Yes, that?s it. The owner of the source files will be sure, that no one > > else can read his files on the destination host. > > > > I thought, rsync only looks at the modification date of a file and > > decides whether to backup this file or not. In this case, the backup > > could be stored encrypted. > > Rsync can handle encrypted files just fine. It just treats > them as ordinary binary files. If the owner of the files > encrypts them on the source they will be encrypted on the > destination. > > As you have said rsync normally just looks at the > modification date for deciding whether to update the > destination (unless you use the -c option) But, unless the > -w option is used rsync will use some rather clever (nod to > rsync developers) methods to transfer only the changed the > parts of changed files. It is this feature that gives rsync > its speed. My comments below are to advise you that that > clever feature is nullified by encrypted files. In fact for > encrypted files rsync would be sub-optimal. If most/all of > the changed files are encrypted i would use the -w option.
Perhaps he wants a gpg-rsyncable patch to gpg? Seriously, such a thing would be possible. After the long thread in which I made a dick of myself discussing how gzip-rsyncable couldn't possibly work, only to have someone explain how it does, I now know how it could be done; encript the data in chunks, where the chunk boundaries are determined by the same heuristic gzip-rsyncable uses. I think I could even whip up a working Python wrapper around gpg in a day or so that could do the job... but I'm too buisy looking for paid work right now to do it so I'll leave it as an excersise for others :-) -- ---------------------------------------------------------------------- ABO: finger [EMAIL PROTECTED] for more info, including pgp key ---------------------------------------------------------------------- -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.tuxedo.org/~esr/faqs/smart-questions.html