Re: [TLS] Using both External PSK and (EC)DH in TLS 1.3

2017-03-25 Thread Eric Rescorla
On Fri, Mar 24, 2017 at 8:14 PM, Jim Schaad wrote: > EKR – I think that is the wrong answer because of the resume case. > Why? It seems like for Russ'a application, you would inject the static PSK initially and then it would be implicitly part of any resumption so no need to reinject it to obtai

Re: [TLS] Using both External PSK and (EC)DH in TLS 1.3

2017-03-25 Thread Jim Schaad
From: Eric Rescorla [mailto:e...@rtfm.com] Sent: Saturday, March 25, 2017 6:40 AM To: Jim Schaad Cc: Russ Housley ; IETF TLS Subject: Re: [TLS] Using both External PSK and (EC)DH in TLS 1.3 On Fri, Mar 24, 2017 at 8:14 PM, Jim Schaad mailto:i...@augustcellars.com> > wrote: EKR –

Re: [TLS] Using both External PSK and (EC)DH in TLS 1.3

2017-03-25 Thread Ilari Liusvaara
On Fri, Mar 24, 2017 at 12:16:48PM -0400, Russ Housley wrote: > > > I agree with David here. Specifically, I think. > > > > - The base specification should continue to forbid certificates in > > combination with PSK > > - We should at some point contemplate an extension that allows the use of >