The Grant Negotiation and Authorization Protocol
draft-hardt-xauth-protocol-14
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Dick Hardt
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2020-08-15
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Network Working Group D. Hardt, Ed.
Internet-Draft SignIn.Org
Intended status: Standards Track 15 August 2020
Expires: 16 February 2021
The Grant Negotiation and Authorization Protocol
draft-hardt-xauth-protocol-14
Abstract
Client software often desires resources or identity claims that are
independent of the client. This protocol allows a user and/or
resource owner to delegate resource authorization and/or release of
identity claims to a server. Client software can then request access
to resources and/or identity claims by calling the server. The
server acquires consent and authorization from the user and/or
resource owner if required, and then returns to the client software
the authorization and identity claims that were approved. This
protocol may be extended on many dimensions.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
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and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on 16 February 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document.
Please review these documents carefully, as they describe your rights
and restrictions with respect to this document. Code Components
Hardt Expires 16 February 2021 [Page 1]
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. The Grant . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2. Protocol Roles . . . . . . . . . . . . . . . . . . . . . 4
1.3. Human Interactions . . . . . . . . . . . . . . . . . . . 5
1.4. Trust Model . . . . . . . . . . . . . . . . . . . . . . . 7
1.5. Terminology . . . . . . . . . . . . . . . . . . . . . . . 8
1.6. Notational Conventions . . . . . . . . . . . . . . . . . 10
2. Exemplar Sequences . . . . . . . . . . . . . . . . . . . . . 11
2.1. "redirect" Interaction . . . . . . . . . . . . . . . . . 11
2.2. "user_code" Interaction . . . . . . . . . . . . . . . . . 13
2.3. Independent RO Authorization . . . . . . . . . . . . . . 14
2.4. Resource Server Access . . . . . . . . . . . . . . . . . 15
3. GS APIs . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1. GS API Table . . . . . . . . . . . . . . . . . . . . . . 16
3.2. Create Grant . . . . . . . . . . . . . . . . . . . . . . 16
3.3. Verify Grant . . . . . . . . . . . . . . . . . . . . . . 19
3.4. Read Grant . . . . . . . . . . . . . . . . . . . . . . . 20
3.5. Request JSON . . . . . . . . . . . . . . . . . . . . . . 20
3.5.1. "client" Object . . . . . . . . . . . . . . . . . . . 20
3.5.2. "interaction" Object . . . . . . . . . . . . . . . . 21
3.5.3. "user" Object . . . . . . . . . . . . . . . . . . . . 21
3.5.4. "access" Object . . . . . . . . . . . . . . . . . . . 22
3.5.5. "claims" Object . . . . . . . . . . . . . . . . . . . 22
3.6. Read Access . . . . . . . . . . . . . . . . . . . . . . . 22
3.7. GS Options . . . . . . . . . . . . . . . . . . . . . . . 23
4. GS Responses . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1. Grant Response . . . . . . . . . . . . . . . . . . . . . 23
4.2. Interaction Response . . . . . . . . . . . . . . . . . . 25
4.3. Wait Response . . . . . . . . . . . . . . . . . . . . . . 26
4.4. Response JSON . . . . . . . . . . . . . . . . . . . . . . 26
4.4.1. "client" Object . . . . . . . . . . . . . . . . . . . 27
4.4.2. "interaction" Object . . . . . . . . . . . . . . . . 27
4.4.3. "access" Object . . . . . . . . . . . . . . . . . . . 27
4.4.4. Access Response Object . . . . . . . . . . . . . . . 27
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