Re: [Uta] Extended Master Secret as a MUST in 7525bis

2022-06-19 Thread Viktor Dukhovni
On Sun, Jun 19, 2022 at 08:38:26PM +0300, Ilari Liusvaara wrote: > > Of course both EMS and EtM MUST be a MUST. > > I think EtM is only MUST if blockmode (CBC) cipher is supported. And > clients SHOULD NOT send EtM if not sending any blockmode cipher suites > (as it is not possible to

Re: [Uta] Extended Master Secret as a MUST in 7525bis

2022-06-19 Thread Ilari Liusvaara
On Sun, Jun 19, 2022 at 09:16:48AM +, Peter Gutmann wrote: > Yaron Sheffer writes: > > >Ben Kaduk asked why we only added TLS 1.2 Extended Master Secret > >support as a SHOULD, and we tend to agree (given widespread support > >of this feature) that is needs to be a MUST [1]. We would

Re: [Uta] Extended Master Secret as a MUST in 7525bis

2022-06-19 Thread Peter Gutmann
Yaron Sheffer writes: >Ben Kaduk asked why we only added TLS 1.2 Extended Master Secret support as a >SHOULD, and we tend to agree (given widespread support of this feature) that >is needs to be a MUST [1]. We would appreciate the group’s input before we >make this change. This, alongside MUST