Re: [Ace] EST over CoAP

2018-05-16 Thread Mohit Sethi
Hi Panos, I wonder what kind of devices you have in mind? On one hand, the devices are constrained enough not to have resources for generating cryptographic quality randomness. But they somehow have support for tamper-resistance identity protection? Is it cheaper to have tamper-resistance? An

Re: [Ace] EST over CoAP

2018-05-16 Thread Hannes Tschofenig
Ø But I don't think we can tell endpoints that they are on their own unless they get the right hardware or they comply with the ACE-OAuth model, or DOXS. [This is probably an issue unrelated to EST topic but worthwhile to talk about nevertheless.] How do you expect companies to come up with re

Re: [Ace] Early media-type registration for EST over CoAP

2018-05-16 Thread Hannes Tschofenig
Hi Carsten, Yes, I am talking about the Content-Format numbers for them. Would rt="ace.est" be the parameter you are talking about? Ciao Hannes -Original Message- From: Carsten Bormann [mailto:c...@tzi.org] Sent: 15 May 2018 11:45 To: Hannes Tschofenig Cc: ace@ietf.org; core Subject: Re:

Re: [Ace] Early media-type registration for EST over CoAP

2018-05-16 Thread Carsten Bormann
I was thinking about media type parameters such as charset="utf-8". The RT value need to be registered separately, but we can be a bit lazy about that.. Sent from mobile > On 16. May 2018, at 12:15, Hannes Tschofenig > wrote: > > Hi Carsten, > > Yes, I am talking about the Content-Format nu

Re: [Ace] Early media-type registration for EST over CoAP

2018-05-16 Thread Carsten Bormann
Forgot to add another example: the content-format numbers for COSE have parameters. Sent from mobile > On 16. May 2018, at 12:26, Carsten Bormann wrote: > > I was thinking about media type parameters such as charset="utf-8". The RT > value need to be registered separately, but we can be a bi

Re: [Ace] Early media-type registration for EST over CoAP

2018-05-16 Thread Hannes Tschofenig
> Hannes: do you have any opinion about the necessity of going through > /.well-known/core to get the short URL, vs just using a /.well-known/est URL? (RTT for the lookup vs extra bytes in the URL) Are you asking me about these two options: Option #1 - going through /.well-known/core REQ:

Re: [Ace] Early media-type registration for EST over CoAP

2018-05-16 Thread Michael Richardson
Hannes Tschofenig wrote: >> Hannes: do you have any opinion about the necessity of going through >> /.well-known/core to get the short URL, vs just using a >> /.well-known/est URL? Yes, exactly. Is option #1 useful enough to justify the code to parse links? Os is the code impact al

Re: [Ace] Early media-type registration for EST over CoAP

2018-05-16 Thread Hannes Tschofenig
I don't have a strong opinion about option #2 appears to be slightly better. I guess hard-cording URLs will not work -Original Message- From: Michael Richardson [mailto:mcr+i...@sandelman.ca] Sent: 16 May 2018 14:16 To: Hannes Tschofenig Cc: ace@ietf.org Subject: Re: [Ace] Early media

[Ace] Reminder -- WGLC on draft-ietf-ace-cwt-proof-of-possession-02

2018-05-16 Thread Roman Danyliw
Hello! A reminder to the WG, draft-ietf-ace-cwt-proof-of-possession is in WGLC. Please send feedback to the mailing list by Wednesday, May 23. Thanks, Roman and Jim > -Original Message- > From: Ace [mailto:ace-boun...@ietf.org] On Behalf Of Roman Danyliw > Sent: Tuesday, May 08, 2018 6

[Ace] CA generated keys (was Re: EST over CoAP)

2018-05-16 Thread Michael Richardson
Michael StJohns wrote: > Basically, the argument I'm hearing again is that we have to have > common protocols that work with the least capable devices in the same > way that they work with more capable devices.   Which then is taken to > mean that we have to limit the security of

Re: [Ace] Early media-type registration for EST over CoAP

2018-05-16 Thread Michael Richardson
Hannes Tschofenig wrote: > I don't have a strong opinion about option #2 appears to be slightly > better. Oh, I misread your options before. Hannes Tschofenig wrote: >> (RTT for the lookup vs extra bytes in the URL) >> Are you asking me about these two options: >> Option #1