OAuth Working Group B. Campbell
Internet-Draft Ping Identity
Intended status: Standards Track C. Mortimore
Expires: September 30, 2013 Salesforce
M.B. Jones
Microsoft
March 29, 2013
SAML 2.0 Profile for OAuth 2.0 Client Authentication and Authorization
Grants
draft-ietf-oauth-saml2-bearer-16
Abstract
This specification defines the use of a SAML 2.0 Bearer Assertion as
a means for requesting an OAuth 2.0 access token as well as for use
as a means of client authentication.
Status of This Memo
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This Internet-Draft will expire on September 30, 2013.
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Internet-Draft OAuth SAML Assertion Profiles March 2013
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Notational Conventions . . . . . . . . . . . . . . . . . 4
1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4
2. HTTP Parameter Bindings for Transporting Assertions . . . . . 4
2.1. Using SAML Assertions as Authorization Grants . . . . . . 4
2.2. Using SAML Assertions for Client Authentication . . . . . 5
3. Assertion Format and Processing Requirements . . . . . . . . 6
3.1. Authorization Grant Processing . . . . . . . . . . . . . 8
3.2. Client Authentication Processing . . . . . . . . . . . . 9
4. Authorization Grant Example . . . . . . . . . . . . . . . . . 9
5. Interoperability Considerations . . . . . . . . . . . . . . . 11
6. Security Considerations . . . . . . . . . . . . . . . . . . . 11
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 11
7.1. Sub-Namespace Registration of urn:ietf:params:oauth
:grant-type:saml2-bearer . . . . . . . . . . . . . . . . 11
7.2. Sub-Namespace Registration of urn:ietf:params:oauth
:client-assertion-type:saml2-bearer . . . . . . . . . . . 11
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.1. Normative References . . . . . . . . . . . . . . . . . . 12
8.2. Informative References . . . . . . . . . . . . . . . . . 12
Appendix A. Acknowledgements . . . . . . . . . . . . . . . . . . 13
Appendix B. Document History . . . . . . . . . . . . . . . . . . 13
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 19
1. Introduction
The Security Assertion Markup Language (SAML) 2.0
[OASIS.saml-core-2.0-os] is an XML-based framework that allows
identity and security information to be shared across security
domains. The SAML specification, while primarily targeted at
providing cross domain Web browser single sign-on, was also designed
to be modular and extensible to facilitate use in other contexts.
The Assertion, an XML security token, is a fundamental construct of
SAML that is often adopted for use in other protocols and
specifications. An Assertion is generally issued by an identity
provider and consumed by a service provider who relies on its content
to identify the Assertion's subject for security related purposes.
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