Re: [OAUTH-WG] A draft on CBOR Web Tokens (CWT)

Mike Jones <> Thu, 12 November 2015 20:38 UTC

Return-Path: <>
Received: from localhost ( []) by (Postfix) with ESMTP id 86BE01B355D for <>; Thu, 12 Nov 2015 12:38:38 -0800 (PST)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -1.701
X-Spam-Status: No, score=-1.701 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=no
Received: from ([]) by localhost ( []) (amavisd-new, port 10024) with ESMTP id W_zcWq4UziET for <>; Thu, 12 Nov 2015 12:38:31 -0800 (PST)
Received: from ( []) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by (Postfix) with ESMTPS id DF4071B355C for <>; Thu, 12 Nov 2015 12:38:31 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=selector1; h=From:To:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=jZyGgdsipmPKVxDiPM1KtO8db1ti0ExlwdNYo+v3rmc=; b=f309s7G9O/zIiTkULSin7FXJwTIUFx2DzxjjagGQdGZByZi5Kr/rkZcI+7WSaRK5pQJEWlierttyY2nho/29gnzAMEIDgBdzN51MatZEDeBOHA1hs0cp2pM8Lt4fpvjIgIT7bTFbi6v6rcQ+3aGnoVPaKCtEEueS+GZAV7v6aus=
Received: from ( by ( with Microsoft SMTP Server (TLS) id 15.1.325.17; Thu, 12 Nov 2015 20:38:29 +0000
Received: from ([]) by ([]) with mapi id 15.01.0325.003; Thu, 12 Nov 2015 20:38:29 +0000
From: Mike Jones <>
To: Erik Wahlström neXus <>, "<>" <>
Thread-Topic: A draft on CBOR Web Tokens (CWT)
Thread-Index: AQHRHX3DyXQEi0Hb60mPSXqbnVxSe56Y2MzQ
Date: Thu, 12 Nov 2015 20:38:29 +0000
Message-ID: <>
References: <> <>
In-Reply-To: <>
Accept-Language: en-US
Content-Language: en-US
authentication-results: spf=none (sender IP is );
x-originating-ip: []
x-microsoft-exchange-diagnostics: 1; BY2PR03MB443; 5:9o83mr9bJaqzsNVigBDD6N6hXOVmpT814RCX0S3haHxBZKkN4RmqDNye9gR+NDjVwMCuZreg/kvA6cgL2ok4DMPk1b7RKiXjtvUQ/25Qn739lN64v0MZw3fBMCNJCq25NiKexm0FnWMoHfPk5lABCg==; 24:lcsCt1uIKl+dU9uov81SKIkVlA52/6CQ+0PYoX2RZHCQSG3+UPNZqjbi9JMklV/FRoDLXZu6vuWc2wD2omwpYlh6jBlQgV8Ya1wsS+f4sqk=; 20:FsY3Fj5lVmI2z0XT5JzCnn4wfxEoFq/W93D+hPHuv7BgbM32aAARBNCbtL00ymdRUWKEvORzOIBcfyrj3gPSpQ==
x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:BY2PR03MB443;
x-microsoft-antispam-prvs: <>
x-exchange-antispam-report-test: UriScan:(108003899814671);
x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(61425024)(601004)(2401047)(5005006)(520078)(8121501046)(10201501046)(3002001)(61426024)(61427024); SRVR:BY2PR03MB443; BCL:0; PCL:0; RULEID:; SRVR:BY2PR03MB443;
x-forefront-prvs: 07584EDBCD
x-forefront-antispam-report: SFV:NSPM; SFS:(10019020)(209900001)(377454003)(199003)(13464003)(189002)(69234005)(50986999)(54356999)(19300405004)(107886002)(10090500001)(16236675004)(19580395003)(33656002)(19580405001)(15975445007)(101416001)(76176999)(561944003)(19625215002)(2950100001)(106356001)(77096005)(2900100001)(105586002)(8990500004)(10290500002)(10400500002)(92566002)(99286002)(5005710100001)(106116001)(102836002)(87936001)(5008740100001)(11100500001)(5002640100001)(122556002)(5001920100001)(5001770100001)(5003600100002)(5004730100002)(66066001)(76576001)(189998001)(5001960100002)(81156007)(97736004)(5007970100001)(74316001)(86362001)(86612001)(19617315012)(40100003)(491001)(6606295002); DIR:OUT; SFP:1102; SCL:1; SRVR:BY2PR03MB443;; FPR:; SPF:None; PTR:InfoNoRecords; A:1; MX:1; LANG:en;
received-spf: None ( does not designate permitted sender hosts)
spamdiagnosticoutput: 1:23
spamdiagnosticmetadata: NSPM
Content-Type: multipart/alternative; boundary="_000_BY2PR03MB442CD32A3E442C53707A09FF5120BY2PR03MB442namprd_"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Nov 2015 20:38:29.4314 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY2PR03MB443
Archived-At: <>
Subject: Re: [OAUTH-WG] A draft on CBOR Web Tokens (CWT)
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: OAUTH WG <>
List-Unsubscribe: <>, <>
List-Archive: <>
List-Post: <>
List-Help: <>
List-Subscribe: <>, <>
X-List-Received-Date: Thu, 12 Nov 2015 20:38:38 -0000

FYI - I also wrote about this at and as @selfissued<>.

-----Original Message-----
From: OAuth [] On Behalf Of Erik Wahlström neXus
Sent: Thursday, November 12, 2015 11:26 AM
To: <>
Subject: [OAUTH-WG] A draft on CBOR Web Tokens (CWT)


In the ACE WG a straw man proposal of a CBOR Web Token (CWT) was defined in the draft "Authorization for the Internet of Things using OAuth 2.0” [1]. We just broke out the CBOR Web Token into a separate draft and the new draft is submitted to the OAUTH WG. It can be found here:


"CBOR Web Token (CWT) is a compact means of representing claims to be transferred between two parties.  CWT is a profile of the JSON Web Token (JWT) that is optimized for constrained devices. The claims in a CWT are encoded in the Concise Binary Object Representation (CBOR) and CBOR Object Signing and Encryption (COSE) is used for added application layer security protection.  A claim is a piece of information asserted about a subject and is represented as a name/value pair consisting of a claim name and a claim value."

/ Erik



OAuth mailing list<>