On Fri, May 31, 2019 at 12:40 PM Samuel Sieb <sam...@sieb.net> wrote:
>
> On 5/31/19 6:57 AM, Martin Kolman wrote:
> > I guess we can't just switch what the signature refers to as there are 
> > other tools
> > that do this kind of verification on the compressed data, not just 
> > delta-RPM, right ?
> >
> > So maybe, could we attach a second signature computed on the uncompressed 
> > payload ?
> > Delta-RPM could then use that to verify the reconstructed package & would 
> > be crazy fast,
> > as the slow XZ compression will no longer be needed to be performed 
> > client-side to verify
> > the signature.
>
> It's not deltarpm that needs the signature.  It just puts the package
> together.  It's rpm that checks the signature.

I'm not sure...

847   fprintf(stderr, "could not read signature header\n");

There are several more of these, and also there are other checks happening.

1467 fprintf(stderr, "junk at end of payload\n");

That and a bunch of possible skipped file related messages suggests
drpm is not so simple. At least it seems like it isn't just some
simple difference map between two rpms.




--
Chris Murphy
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