[Cryptography] PRISM-Proofing and PRISM-Hardening
cryptography at dukhovni.org
Wed Sep 18 17:50:31 EDT 2013
On Wed, Sep 18, 2013 at 08:47:17PM +0000, Viktor Dukhovni wrote:
> On Wed, Sep 18, 2013 at 08:04:04PM +0100, Ben Laurie wrote:
> > > This is only realistic with DANE TLSA (certificate usage 2 or 3),
> > > and thus will start to be realistic for SMTP next year (provided
> > > DNSSEC gets off the ground) with the release of Postfix 2.11, and
> > > with luck also a DANE-capable Exim release.
> > What's wrong with name-constrained intermediates?
> X.509 name constraints (critical extensions in general) typically
> don't work.
And public CAs don't generally sell intermediate CAs with name
constraints. Rather undercuts their business model.
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