Re: [OAUTH-WG] I-D Action: draft-ietf-oauth-v2-http-mac-03.txt

[William Mills <[e-mail]>]

I certainly hope so.


________________________________
 From: Sergey Beryozkin <[e-mail]>
To: William Mills <[e-mail]> 
Cc: "[e-mail]" <[e-mail]> 
Sent: Thursday, February 28, 2013 10:02 AM
Subject: Re: [OAUTH-WG] I-D Action: draft-ietf-oauth-v2-http-mac-03.txt
 
On 28/02/13 17:49, William Mills wrote:
> The JWT replaces the oauth_token data element in the old MAC stuff. I
> just want to take all the other oauth_* variables and stuff them in a
> separate JSON object and completely kill the "fun with sorting
> variables" when the oauth_* things can be carried in the query string or
> header or post body.
As far as the client accessing RS is concerned, should it be limited to 
using a header, same as for other OAuth2 tokens ?

Cheers, Sergey

>
> ------------------------------------------------------------------------
> *From:* Sergey Beryozkin <[e-mail]>
> *To:* [e-mail]
> *Sent:* Thursday, February 28, 2013 9:04 AM
> *Subject:* Re: [OAUTH-WG] I-D Action: draft-ietf-oauth-v2-http-mac-03.txt
>
> Hi
> On 28/02/13 13:14, William Mills wrote:
>  > I'm actually advocating that we change MAC to be a JWT extension.
> IMHO, having a simpler option, plus, going forward, a possible JWT
> profile (client to RS path) would work better -
>
> Why would JWT completely take over ? May be it should be possible indeed
> to have it as a JWT extension - should it be part of the relevant JWT
> assertion spec, where JWT is used as a possible grant ?
>
> Thanks, Sergey
>  >
>  > ------------------------------------------------------------------------
>  > *From:* Hannes Tschofenig <[e-mail]
> <mailto:[e-mail]>>
>  > *To:* William Mills <[e-mail]
> <mailto:[e-mail]>>
>  > *Cc:* Hannes Tschofenig <[e-mail]
> <mailto:[e-mail]>>; "[e-mail]
> <mailto:[e-mail]>"
>  > <[e-mail] <mailto:[e-mail]>>
>  > *Sent:* Thursday, February 28, 2013 2:28 AM
>  > *Subject:* Re: [OAUTH-WG] I-D Action: draft-ietf-oauth-v2-http-mac-03.txt
>  >
>  > Hi Bill,
>  >
>  > I believe you are misreading the document. In
>  > draft-ietf-oauth-v2-http-mac the client still uses the MAC when it
>  > accesses a protected resource.
>  > The only place where the JWT comes into the picture is with the
>  > description of the access token. This matters from a key distribution
>  > point of view. The session key for the MAC is included in the encrypted
>  > JWT. The JWT is encrypted by the authorization server and decrypted by
>  > the resource server.
>  >
>  > Information about how header fields get included in the MAC is described
>  > in Section 5.
>  >
>  > The nonce isn't killed it is just called differently: seq-nr. The stuff
>  > in the original MAC specification actually wasn't a nonce (from the
>  > semantic point of view).
>  > The extension parameter is there implicitly by allowing additional
>  > header fields to be included in the MAC computation.
>  >
>  > I need to look at the port number field again.
>  >
>  > Ciao
>  > Hannes
>  >
>  > On Feb 27, 2013, at 11:12 AM, William Mills wrote:
>  >
>  > > Just read the draft quickly.
>  > >
>  > > Since we're now leaning on JWT do we need to include the token in
>  > this? Why not just make an additional "Envelope MAC" thing and have the
>  > signature include the 3 JWT parts in the signature base string? That
>  > object then just becomes a JSON container for the kid, timestamp,
>  > signature method, signature etc. That thing then is a 4th base64 encoded
>  > JSON thing in the auth header.
>  > >
>  > > How header fields get included in the signature needs definition.
>  > >
>  > > Why did you kill the port number, nonce, and extension parameter out
>  > of the signature base string?
>  > >
>  > > The BNF appears to have no separators between values.
>  > >
>  > > -bill
>  > >
>  > >
>  > > From: "[e-mail] <mailto:[e-mail]>
> <mailto:[e-mail] <mailto:[e-mail]>>"
>  > <[e-mail] <mailto:[e-mail]>
> <mailto:[e-mail] <mailto:[e-mail]>>>
>  > > To: [e-mail] <mailto:[e-mail]>
> <mailto:[e-mail] <mailto:[e-mail]>>
>  > > Cc: [e-mail] <mailto:[e-mail]> <mailto:[e-mail]
> <mailto:[e-mail]>>
>  > > Sent: Monday, February 25, 2013 4:46 AM
>  > > Subject: [OAUTH-WG] I-D Action: draft-ietf-oauth-v2-http-mac-03.txt
>  > >
>  > >
>  > > A New Internet-Draft is available from the on-line Internet-Drafts
>  > directories.
>  > > This draft is a work item of the Web Authorization Protocol Working
>  > Group of the IETF.
>  > >
>  > > Title : OAuth 2.0 Message Authentication Code (MAC) Tokens
>  > > Author(s) : Justin Richer
>  > > William Mills
>  > > Hannes Tschofenig
>  > > Filename : draft-ietf-oauth-v2-http-mac-03.txt
>  > > Pages : 26
>  > > Date : 2013-02-25
>  > >
>  > > Abstract:
>  > > This specification describes how to use MAC Tokens in HTTP requests
>  > > to access OAuth 2.0 protected resources. An OAuth client willing to
>  > > access a protected resource needs to demonstrate possession of a
>  > > crytographic key by using it with a keyed message digest function to
>  > > the request.
>  > >
>  > > The document also defines a key distribution protocol for obtaining a
>  > > fresh session key.
>  > >
>  > >
>  > > The IETF datatracker status page for this draft is:
>  > > https://datatracker.ietf.org/doc/draft-ietf-oauth-v2-http-mac
>  > >
>  > > There's also a htmlized version available at:
>  > > http://tools.ietf.org/html/draft-ietf-oauth-v2-http-mac-03
>  > >
>  > > A diff from the previous version is available at:
>  > > http://www.ietf.org/rfcdiff?url2=draft-ietf-oauth-v2-http-mac-03
>  > >
>  > >
>  > > Internet-Drafts are also available by anonymous FTP at:
>  > > ftp://ftp.ietf.org/internet-drafts/
>  > >
>  > > _______________________________________________
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> <mailto:[e-mail]>>
>  > > https://www.ietf.org/mailman/listinfo/oauth
>  > >
>  > >
>  >
>  >
>  >
>  >
>  >
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