draft-ietf-httpbis-p7-auth-02.txt   draft-ietf-httpbis-p7-auth-03.txt 
Network Working Group R. Fielding, Ed. Network Working Group R. Fielding, Ed.
Internet-Draft Day Software Internet-Draft Day Software
Obsoletes: 2616 (if approved) J. Gettys Obsoletes: 2616 (if approved) J. Gettys
Updates: 2617 (if approved) One Laptop per Child Updates: 2617 (if approved) One Laptop per Child
Intended status: Standards Track J. Mogul Intended status: Standards Track J. Mogul
Expires: August 27, 2008 HP Expires: December 19, 2008 HP
H. Frystyk H. Frystyk
Microsoft Microsoft
L. Masinter L. Masinter
Adobe Systems Adobe Systems
P. Leach P. Leach
Microsoft Microsoft
T. Berners-Lee T. Berners-Lee
W3C/MIT W3C/MIT
Y. Lafon, Ed. Y. Lafon, Ed.
W3C W3C
J. Reschke, Ed. J. Reschke, Ed.
greenbytes greenbytes
February 24, 2008 June 17, 2008
HTTP/1.1, part 7: Authentication HTTP/1.1, part 7: Authentication
draft-ietf-httpbis-p7-auth-02 draft-ietf-httpbis-p7-auth-03
Status of this Memo Status of this Memo
By submitting this Internet-Draft, each author represents that any By submitting this Internet-Draft, each author represents that any
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aware will be disclosed, in accordance with Section 6 of BCP 79. aware will be disclosed, in accordance with Section 6 of BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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This Internet-Draft will expire on August 27, 2008. This Internet-Draft will expire on December 19, 2008.
Copyright Notice
Copyright (C) The IETF Trust (2008).
Abstract Abstract
The Hypertext Transfer Protocol (HTTP) is an application-level The Hypertext Transfer Protocol (HTTP) is an application-level
protocol for distributed, collaborative, hypermedia information protocol for distributed, collaborative, hypermedia information
systems. HTTP has been in use by the World Wide Web global systems. HTTP has been in use by the World Wide Web global
information initiative since 1990. This document is Part 7 of the information initiative since 1990. This document is Part 7 of the
seven-part specification that defines the protocol referred to as seven-part specification that defines the protocol referred to as
"HTTP/1.1" and, taken together, obsoletes RFC 2616. Part 7 defines "HTTP/1.1" and, taken together, obsoletes RFC 2616. Part 7 defines
HTTP Authentication. HTTP Authentication.
Editorial Note (To be removed by RFC Editor) Editorial Note (To be removed by RFC Editor)
Discussion of this draft should take place on the HTTPBIS working Discussion of this draft should take place on the HTTPBIS working
group mailing list (ietf-http-wg@w3.org). The current issues list is group mailing list (ietf-http-wg@w3.org). The current issues list is
at <http://www.tools.ietf.org/wg/httpbis/trac/report/11> and related at <http://www.tools.ietf.org/wg/httpbis/trac/report/11> and related
documents (including fancy diffs) can be found at documents (including fancy diffs) can be found at
<http://www.tools.ietf.org/wg/httpbis/>. <http://www.tools.ietf.org/wg/httpbis/>.
This draft incorporates those issue resolutions that were either The changes in this draft are summarized in Appendix B.4.
collected in the original RFC2616 errata list
(<http://purl.org/NET/http-errata>), or which were agreed upon on the
mailing list between October 2006 and November 2007 (as published in
"draft-lafon-rfc2616bis-03").
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Requirements . . . . . . . . . . . . . . . . . . . . . . . 4 1.1. Requirements . . . . . . . . . . . . . . . . . . . . . . . 4
2. Notational Conventions and Generic Grammar . . . . . . . . . . 4 2. Notational Conventions and Generic Grammar . . . . . . . . . . 4
3. Status Code Definitions . . . . . . . . . . . . . . . . . . . 5 3. Status Code Definitions . . . . . . . . . . . . . . . . . . . 5
3.1. 401 Unauthorized . . . . . . . . . . . . . . . . . . . . . 5 3.1. 401 Unauthorized . . . . . . . . . . . . . . . . . . . . . 5
3.2. 407 Proxy Authentication Required . . . . . . . . . . . . 5 3.2. 407 Proxy Authentication Required . . . . . . . . . . . . 5
4. Header Field Definitions . . . . . . . . . . . . . . . . . . . 5 4. Header Field Definitions . . . . . . . . . . . . . . . . . . . 5
4.1. Authorization . . . . . . . . . . . . . . . . . . . . . . 5 4.1. Authorization . . . . . . . . . . . . . . . . . . . . . . 5
4.2. Proxy-Authenticate . . . . . . . . . . . . . . . . . . . . 6 4.2. Proxy-Authenticate . . . . . . . . . . . . . . . . . . . . 6
4.3. Proxy-Authorization . . . . . . . . . . . . . . . . . . . 7 4.3. Proxy-Authorization . . . . . . . . . . . . . . . . . . . 7
4.4. WWW-Authenticate . . . . . . . . . . . . . . . . . . . . . 7 4.4. WWW-Authenticate . . . . . . . . . . . . . . . . . . . . . 7
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
6. Security Considerations . . . . . . . . . . . . . . . . . . . 7 5.1. Message Header Registration . . . . . . . . . . . . . . . 7
6. Security Considerations . . . . . . . . . . . . . . . . . . . 8
6.1. Authentication Credentials and Idle Clients . . . . . . . 8 6.1. Authentication Credentials and Idle Clients . . . . . . . 8
7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 8 7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 9
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8.1. Normative References . . . . . . . . . . . . . . . . . . . 8 8.1. Normative References . . . . . . . . . . . . . . . . . . . 9
8.2. Informative References . . . . . . . . . . . . . . . . . . 9 8.2. Informative References . . . . . . . . . . . . . . . . . . 9
Appendix A. Compatibility with Previous Versions . . . . . . . . 9 Appendix A. Compatibility with Previous Versions . . . . . . . . 9
A.1. Changes from RFC 2616 . . . . . . . . . . . . . . . . . . 9 A.1. Changes from RFC 2616 . . . . . . . . . . . . . . . . . . 9
Appendix B. Change Log (to be removed by RFC Editor before Appendix B. Change Log (to be removed by RFC Editor before
publication) . . . . . . . . . . . . . . . . . . . . 9 publication) . . . . . . . . . . . . . . . . . . . . 9
B.1. Since RFC2616 . . . . . . . . . . . . . . . . . . . . . . 9 B.1. Since RFC2616 . . . . . . . . . . . . . . . . . . . . . . 10
B.2. Since draft-ietf-httpbis-p7-auth-00 . . . . . . . . . . . 9 B.2. Since draft-ietf-httpbis-p7-auth-00 . . . . . . . . . . . 10
B.3. Since draft-ietf-httpbis-p7-auth-01 . . . . . . . . . . . 9 B.3. Since draft-ietf-httpbis-p7-auth-01 . . . . . . . . . . . 10
B.4. Since draft-ietf-httpbis-p7-auth-02 . . . . . . . . . . . 10
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 10 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11
Intellectual Property and Copyright Statements . . . . . . . . . . 14 Intellectual Property and Copyright Statements . . . . . . . . . . 14
1. Introduction 1. Introduction
This document defines HTTP/1.1 access control and authentication. This document defines HTTP/1.1 access control and authentication.
Right now it includes the extracted relevant sections of RFC 2616 Right now it includes the extracted relevant sections of RFC 2616
with only minor changes. The intention is to move the general with only minor changes. The intention is to move the general
framework for HTTP authentication here, as currently specified in framework for HTTP authentication here, as currently specified in
[RFC2617], and allow the individual authentication mechanisms to be [RFC2617], and allow the individual authentication mechanisms to be
defined elsewhere. This introduction will be rewritten when that defined elsewhere. This introduction will be rewritten when that
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The HTTP access authentication process is described in "HTTP The HTTP access authentication process is described in "HTTP
Authentication: Basic and Digest Access Authentication" [RFC2617]. Authentication: Basic and Digest Access Authentication" [RFC2617].
User agents are advised to take special care in parsing the WWW- User agents are advised to take special care in parsing the WWW-
Authenticate field value as it might contain more than one challenge, Authenticate field value as it might contain more than one challenge,
or if more than one WWW-Authenticate header field is provided, the or if more than one WWW-Authenticate header field is provided, the
contents of a challenge itself can contain a comma-separated list of contents of a challenge itself can contain a comma-separated list of
authentication parameters. authentication parameters.
5. IANA Considerations 5. IANA Considerations
[[anchor2: TBD.]] 5.1. Message Header Registration
The Message Header Registry located at <http://www.iana.org/
assignments/message-headers/message-header-index.html> should be
updated with the permanent registrations below (see [RFC3864]):
+---------------------+----------+----------+-------------+
| Header Field Name | Protocol | Status | Reference |
+---------------------+----------+----------+-------------+
| Authorization | http | standard | Section 4.1 |
| Proxy-Authenticate | http | standard | Section 4.2 |
| Proxy-Authorization | http | standard | Section 4.3 |
| WWW-Authenticate | http | standard | Section 4.4 |
+---------------------+----------+----------+-------------+
The change controller is: "IETF (iesg@ietf.org) - Internet
Engineering Task Force".
6. Security Considerations 6. Security Considerations
This section is meant to inform application developers, information This section is meant to inform application developers, information
providers, and users of the security limitations in HTTP/1.1 as providers, and users of the security limitations in HTTP/1.1 as
described by this document. The discussion does not include described by this document. The discussion does not include
definitive solutions to the problems revealed, though it does make definitive solutions to the problems revealed, though it does make
some suggestions for reducing security risks. some suggestions for reducing security risks.
6.1. Authentication Credentials and Idle Clients 6.1. Authentication Credentials and Idle Clients
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This is currently under separate study. There are a number of work- This is currently under separate study. There are a number of work-
arounds to parts of this problem, and we encourage the use of arounds to parts of this problem, and we encourage the use of
password protection in screen savers, idle time-outs, and other password protection in screen savers, idle time-outs, and other
methods which mitigate the security problems inherent in this methods which mitigate the security problems inherent in this
problem. In particular, user agents which cache credentials are problem. In particular, user agents which cache credentials are
encouraged to provide a readily accessible mechanism for discarding encouraged to provide a readily accessible mechanism for discarding
cached credentials under user control. cached credentials under user control.
7. Acknowledgments 7. Acknowledgments
TBD. [[anchor2: TBD.]]
8. References 8. References
8.1. Normative References 8.1. Normative References
[Part1] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H., [Part1] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed., Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,
and J. Reschke, Ed., "HTTP/1.1, part 1: URIs, Connections, and J. Reschke, Ed., "HTTP/1.1, part 1: URIs, Connections,
and Message Parsing", draft-ietf-httpbis-p1-messaging-02 and Message Parsing", draft-ietf-httpbis-p1-messaging-03
(work in progress), February 2008. (work in progress), June 2008.
[Part6] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H., [Part6] Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed., Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,
and J. Reschke, Ed., "HTTP/1.1, part 6: Caching", and J. Reschke, Ed., "HTTP/1.1, part 6: Caching",
draft-ietf-httpbis-p6-cache-02 (work in progress), draft-ietf-httpbis-p6-cache-03 (work in progress),
February 2008. June 2008.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2617] Franks, J., Hallam-Baker, P., Hostetler, J., Lawrence, S., [RFC2617] Franks, J., Hallam-Baker, P., Hostetler, J., Lawrence, S.,
Leach, P., Luotonen, A., and L. Stewart, "HTTP Leach, P., Luotonen, A., and L. Stewart, "HTTP
Authentication: Basic and Digest Access Authentication", Authentication: Basic and Digest Access Authentication",
RFC 2617, June 1999. RFC 2617, June 1999.
8.2. Informative References 8.2. Informative References
[RFC2616] Fielding, R., Gettys, J., Mogul, J., Frystyk, H., [RFC2616] Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P., and T. Berners-Lee, "Hypertext Masinter, L., Leach, P., and T. Berners-Lee, "Hypertext
Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999. Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.
[RFC3864] Klyne, G., Nottingham, M., and J. Mogul, "Registration
Procedures for Message Header Fields", BCP 90, RFC 3864,
September 2004.
Appendix A. Compatibility with Previous Versions Appendix A. Compatibility with Previous Versions
A.1. Changes from RFC 2616 A.1. Changes from RFC 2616
Appendix B. Change Log (to be removed by RFC Editor before publication) Appendix B. Change Log (to be removed by RFC Editor before publication)
B.1. Since RFC2616 B.1. Since RFC2616
Extracted relevant partitions from [RFC2616]. Extracted relevant partitions from [RFC2616].
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Ongoing work on ABNF conversion Ongoing work on ABNF conversion
(<http://www3.tools.ietf.org/wg/httpbis/trac/ticket/36>): (<http://www3.tools.ietf.org/wg/httpbis/trac/ticket/36>):
o Explicitly import BNF rules for "challenge" and "credentials" from o Explicitly import BNF rules for "challenge" and "credentials" from
RFC2617. RFC2617.
o Add explicit references to BNF syntax and rules imported from o Add explicit references to BNF syntax and rules imported from
other parts of the specification. other parts of the specification.
B.4. Since draft-ietf-httpbis-p7-auth-02
Ongoing work on IANA Message Header Registration
(<http://www3.tools.ietf.org/wg/httpbis/trac/ticket/40>):
o Reference RFC 3984, and update header registrations for headers
defined in this document.
Index Index
4 4
401 Unauthorized (status code) 5 401 Unauthorized (status code) 5
407 Proxy Authentication Required (status code) 5 407 Proxy Authentication Required (status code) 5
A A
Authorization header 5 Authorization header 5
G G
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attempt made to obtain a general license or permission for the use of attempt made to obtain a general license or permission for the use of
such proprietary rights by implementers or users of this such proprietary rights by implementers or users of this
specification can be obtained from the IETF on-line IPR repository at specification can be obtained from the IETF on-line IPR repository at
http://www.ietf.org/ipr. http://www.ietf.org/ipr.
The IETF invites any interested party to bring to its attention any The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary copyrights, patents or patent applications, or other proprietary
rights that may cover technology that may be required to implement rights that may cover technology that may be required to implement
this standard. Please address the information to the IETF at this standard. Please address the information to the IETF at
ietf-ipr@ietf.org. ietf-ipr@ietf.org.
Acknowledgment
Funding for the RFC Editor function is provided by the IETF
Administrative Support Activity (IASA).
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