On Sat, 16 Aug 2014 23:55:55 +0000
Joonas Lehtonen <joonas.lehto...@bitmessage.ch> wrote:

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> > It's logistically difficult to sign the repodata... but of course
> > it could be done.
> > 
> > Many, if not all of the things they mention (I can't seem to find a
> > link to the orig USENIX pdf thats still valid to be sure) were
> > fixed by us moving to using metalinks by default.
> > 
> > The metalink is fetched over https and the ssl certs are checked. 
> > The metalink has checksums of the current and previous repodata
> > only.
> 
> While transport layer security is certainly weaker than gpg signatures
> (depending on where you store your private keys) it is certainly
> addresses the easiest MITM attacks.

Yeah. 

> Is there any kind of certificate pinning in place when verifying the
> certificate of https://mirrors.fedoraproject.org or can the
> certificate be from any trusted CA?

I'm not sure. Yum (and dnf) uses python-urlgrabber, which uses
urlgrabber, which uses curl. So, it would depend on the default curl
config. 

> Thanks for your explanation!

No problem. 

kevin

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