Re: [TLS] WGLC for "A Flags Extension for TLS 1.3"

2020-04-25 Thread Yoav Nir
See below. I think the next thing to do is to get a signal from the working group about whether we do or don’t want to allow unsolicited server flags, because prohibiting it will require a significant change in the draft. I’m happy to make such a change, because I still can’t come up with such

Re: [TLS] Choice of Additional Data Computation

2020-04-25 Thread chris -
> So far I fail to understand, on an intuitive level, why it easier to > analyze the protocol when the AAD can take multiple forms potentially > truncating or omitting the underlying data, but then I don't know the > details and you're the expert here. If you have time though to explain a > bit

Re: [TLS] DTLS 1.3 AEAD additional data

2020-04-25 Thread Thomas Fossati
On 25/04/2020, 11:11, "Thomas Fossati" wrote: > On 25/04/2020, 01:30, "Christopher Wood" wrote: > > On Thu, Apr 23, 2020, at 2:17 PM, Eric Rescorla wrote: > > > 1. Allowing implicit CIDs is very recent (it was introduced in > > > -34) > > > 2. The CID specification explicitly prohibits it for

Re: [TLS] Choice of Additional Data Computation

2020-04-25 Thread Thomas Fossati
On 24/04/2020, 22:35, "Eric Rescorla" wrote: > On Fri, Apr 24, 2020 at 2:29 PM chris - wrote: > > I would need to study the specs in order to provide an intelligent > > answer here. Off the hip, it would seem to depend on how the > > boundaries between record headers and ciphertexts are

Re: [TLS] DTLS 1.3 AEAD additional data

2020-04-25 Thread Thomas Fossati
On 25/04/2020, 01:30, "Christopher Wood" wrote: > On Thu, Apr 23, 2020, at 2:17 PM, Eric Rescorla wrote: > > 1. Allowing implicit CIDs is very recent (it was introduced in -34) > > 2. The CID specification explicitly prohibits it for DTLS 1.2. 3. I > > haven't really heard a very compelling