Re: [TLS] I-D Action: draft-ietf-tls-deprecate-obsolete-kex-03.txt

2023-09-28 Thread Hubert Kario
On Friday, 22 September 2023 08:08:17 CEST, Peter Gutmann wrote: This draft still has the same problem that's been pointed out previously: Clients MUST NOT offer and servers MUST NOT select FFDHE cipher suites in TLS 1.2 connections. What this means is that if the implementation doesn't

Re: [TLS] I-D Action: draft-ietf-tls-deprecate-obsolete-kex-03.txt

2023-09-26 Thread Nimrod Aviram
Thanks! Both points sound good to me. I pushed these changes to the main branch, I guess we'll wait to accumulate more (hopefully small) changes before publishing a new version. thanks, Nimrod On Thu, 21 Sept 2023 at 18:24, Thomas Fossati wrote: > Hi, > > Maybe I am completely confused but It

Re: [TLS] I-D Action: draft-ietf-tls-deprecate-obsolete-kex-03.txt

2023-09-22 Thread Peter Gutmann
This draft still has the same problem that's been pointed out previously: Clients MUST NOT offer and servers MUST NOT select FFDHE cipher suites in TLS 1.2 connections. What this means is that if the implementation doesn't support ECC, as some do, then it's in effect saying: Clients and

Re: [TLS] I-D Action: draft-ietf-tls-deprecate-obsolete-kex-03.txt

2023-09-21 Thread Thomas Fossati
Hi, Maybe I am completely confused but It also looks like the "SHOULD NOT non-ephemeral ECDH" (second para of §2) is already in the "general guidelines" of RFC9325. If you want to reiterate the point (which is good), you could just reference it? cheers, t On Thu, 21 Sept 2023 at 17:13, Thomas

Re: [TLS] I-D Action: draft-ietf-tls-deprecate-obsolete-kex-03.txt

2023-09-21 Thread Thomas Fossati
Hi, It looks like the requirements in §2 and §3 regarding FFDH(E) update the guidance given in RFC9325 (i.e., SHOULD NOT => MUST NOT). I guess this must be reflected in the "Updates" header. cheers, thanks t On Thu, 21 Sept 2023 at 10:22, wrote: > > Internet-Draft

[TLS] I-D Action: draft-ietf-tls-deprecate-obsolete-kex-03.txt

2023-09-21 Thread internet-drafts
Internet-Draft draft-ietf-tls-deprecate-obsolete-kex-03.txt is now available. It is a work item of the Transport Layer Security (TLS) WG of the IETF. Title: Deprecating Obsolete Key Exchange Methods in TLS 1.2 Authors: Carrick Bartle Nimrod Aviram Name: