Re: RFC7919 Diffie-Hellman parameters in Fedora

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On Sun, 2020-08-23 at 04:26 +0200, Kevin Kofler wrote:
> Christopher Engelhard wrote:
> > tl;dr should we make it easier/automatic for users to use the
> > Diffie-Hellman parameters defined in RFC7919?
> 
> While I understand the motivation behind the RFC (interoperability, safety 
> against intentionally or unintentionally bad parameters), hardcoded 
> parameters sound suspicious to me. How do we know that these are not chosen 
> to allow the NSA or some other country's equivalent agency to decrypt the 
> conversation?

You don't, except for all the reviews mentioned, which are definitely
more review than randomly selected parameters which often are more
suspicious.

If you are worried about DH I suggest you just disable it entirely and
rely on RSA/ECDH key exchanges instead.

Simo.

-- 
Simo Sorce
RHEL Crypto Team
Red Hat, Inc



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