HTTP Digest Access Authentication
RFC 7616
| Document | Type |
RFC - Proposed Standard
(September 2015; Errata)
Obsoletes RFC 2617
|
|
|---|---|---|---|
| Authors | Rifaat Shekh-Yusef , David Ahrens , Sophie Bremer | ||
| Last updated | 2020-01-21 | ||
| Replaces | draft-ietf-httpauth-digest-encoding, draft-ietf-httpauth-digest-update | ||
| Stream | Internet Engineering Task Force (IETF) | ||
| Formats | plain text html pdf htmlized (tools) htmlized with errata bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Yoav Nir | ||
| Shepherd write-up | Show (last changed 2015-03-09) | ||
| IESG | IESG state | RFC 7616 (Proposed Standard) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Kathleen Moriarty | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) R. Shekh-Yusef, Ed.
Request for Comments: 7616 Avaya
Obsoletes: 2617 D. Ahrens
Category: Standards Track Independent
ISSN: 2070-1721 S. Bremer
Netzkonform
September 2015
HTTP Digest Access Authentication
Abstract
The Hypertext Transfer Protocol (HTTP) provides a simple challenge-
response authentication mechanism that may be used by a server to
challenge a client request and by a client to provide authentication
information. This document defines the HTTP Digest Authentication
scheme that can be used with the HTTP authentication mechanism.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7616.
Shekh-Yusef, et al. Standards Track [Page 1]
RFC 7616 HTTP Digest Access Authentication September 2015
Copyright Notice
Copyright (c) 2015 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
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This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
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material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
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outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Shekh-Yusef, et al. Standards Track [Page 2]
RFC 7616 HTTP Digest Access Authentication September 2015
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4
2. Syntax Convention . . . . . . . . . . . . . . . . . . . . . . 4
2.1. Examples . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2. ABNF . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Digest Access Authentication Scheme . . . . . . . . . . . . . 5
3.1. Overall Operation . . . . . . . . . . . . . . . . . . . . 5
3.2. Representation of Digest Values . . . . . . . . . . . . . 5
3.3. The WWW-Authenticate Response Header Field . . . . . . . 5
3.4. The Authorization Header Field . . . . . . . . . . . . . 9
3.4.1. Response . . . . . . . . . . . . . . . . . . . . . . 11
3.4.2. A1 . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4.3. A2 . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.4. Username Hashing . . . . . . . . . . . . . . . . . . 12
3.4.5. Parameter Values and Quoted-String . . . . . . . . . 12
3.4.6. Various Considerations . . . . . . . . . . . . . . . 13
3.5. The Authentication-Info and Proxy-Authentication-Info
Header Fields . . . . . . . . . . . . . . . . . . . . . . 14
3.6. Digest Operation . . . . . . . . . . . . . . . . . . . . 15
3.7. Security Protocol Negotiation . . . . . . . . . . . . . . 16
3.8. Proxy-Authenticate and Proxy-Authorization . . . . . . . 17
3.9. Examples . . . . . . . . . . . . . . . . . . . . . . . . 18
3.9.1. Example with SHA-256 and MD5 . . . . . . . . . . . . 18
3.9.2. Example with SHA-512-256, Charset, and Userhash . . . 19
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