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| 305 | |
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| 319 | } |
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| 320 | |
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| 321 | @page { |
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| 322 | @top-left { |
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| 323 | content: "INTERNET DRAFT"; |
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| 324 | } |
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| 325 | @top-right { |
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| 326 | content: "March 2009"; |
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| 327 | } |
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| 328 | @top-center { |
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| 329 | content: "HTTP/1.1, Part 7"; |
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| 330 | } |
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| 331 | @bottom-left { |
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| 332 | content: "Fielding, et al."; |
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| 333 | } |
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| 334 | @bottom-center { |
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| 336 | } |
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| 341 | |
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| 349 | @top-center { |
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| 350 | content: normal; |
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| 351 | } |
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| 352 | } |
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| 353 | </style><link rel="Contents" href="#rfc.toc"> |
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| 354 | <link rel="Author" href="#rfc.authors"> |
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| 355 | <link rel="Copyright" href="#rfc.copyright"> |
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| 356 | <link rel="Index" href="#rfc.index"> |
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| 357 | <link rel="Chapter" title="1 Introduction" href="#rfc.section.1"> |
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| 358 | <link rel="Chapter" title="2 Status Code Definitions" href="#rfc.section.2"> |
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| 359 | <link rel="Chapter" title="3 Header Field Definitions" href="#rfc.section.3"> |
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| 360 | <link rel="Chapter" title="4 IANA Considerations" href="#rfc.section.4"> |
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| 361 | <link rel="Chapter" title="5 Security Considerations" href="#rfc.section.5"> |
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| 362 | <link rel="Chapter" title="6 Acknowledgments" href="#rfc.section.6"> |
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| 363 | <link rel="Chapter" href="#rfc.section.7" title="7 References"> |
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| 364 | <link rel="Appendix" title="A Compatibility with Previous Versions" href="#rfc.section.A"> |
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| 365 | <link rel="Appendix" title="B Collected ABNF" href="#rfc.section.B"> |
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| 366 | <link rel="Appendix" title="C Change Log (to be removed by RFC Editor before publication)" href="#rfc.section.C"> |
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| 367 | <meta name="generator" content="http://greenbytes.de/tech/webdav/rfc2629.xslt, Revision 1.424, 2009-02-24 16:15:29, XSLT vendor: SAXON 8.9 from Saxonica http://www.saxonica.com/"> |
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| 368 | <link rel="schema.DC" href="http://purl.org/dc/elements/1.1/"> |
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| 369 | <meta name="DC.Creator" content="Fielding, R."> |
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| 370 | <meta name="DC.Creator" content="Gettys, J."> |
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| 371 | <meta name="DC.Creator" content="Mogul, J."> |
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| 372 | <meta name="DC.Creator" content="Frystyk, H."> |
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| 373 | <meta name="DC.Creator" content="Masinter, L."> |
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| 374 | <meta name="DC.Creator" content="Leach, P."> |
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| 375 | <meta name="DC.Creator" content="Berners-Lee, T."> |
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| 376 | <meta name="DC.Creator" content="Lafon, Y."> |
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| 377 | <meta name="DC.Creator" content="Reschke, J. F."> |
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| 378 | <meta name="DC.Identifier" content="urn:ietf:id:draft-ietf-httpbis-p7-auth-latest"> |
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| 379 | <meta name="DC.Date.Issued" scheme="ISO8601" content="2009-03"> |
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| 380 | <meta name="DC.Relation.Replaces" content="urn:ietf:rfc:2616"> |
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| 381 | <meta name="DC.Description.Abstract" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. HTTP has been in use by the World Wide Web global information initiative since 1990. This document is Part 7 of the seven-part specification that defines the protocol referred to as "HTTP/1.1" and, taken together, obsoletes RFC 2616. Part 7 defines HTTP Authentication."> |
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| 382 | </head> |
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| 383 | <body> |
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| 384 | <table summary="header information" class="header" border="0" cellpadding="1" cellspacing="1"> |
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| 385 | <tr> |
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| 386 | <td class="header left">HTTPbis Working Group</td> |
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| 387 | <td class="header right">R. Fielding, Editor</td> |
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| 388 | </tr> |
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| 389 | <tr> |
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| 390 | <td class="header left">Internet Draft</td> |
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| 391 | <td class="header right">Day Software</td> |
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| 392 | </tr> |
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| 393 | <tr> |
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| 394 | <td class="header left"> |
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| 395 | <draft-ietf-httpbis-p7-auth-latest> |
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| 396 | |
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| 397 | </td> |
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| 398 | <td class="header right">J. Gettys</td> |
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| 399 | </tr> |
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| 400 | <tr> |
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| 401 | <td class="header left">Obsoletes: <a href="http://tools.ietf.org/html/rfc2616">2616</a> (if approved) |
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| 402 | </td> |
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| 403 | <td class="header right">One Laptop per Child</td> |
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| 404 | </tr> |
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| 405 | <tr> |
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| 406 | <td class="header left">Updates: <a href="http://tools.ietf.org/html/rfc2617">2617</a> (if approved) |
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| 407 | </td> |
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| 408 | <td class="header right">J. Mogul</td> |
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| 409 | </tr> |
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| 410 | <tr> |
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| 411 | <td class="header left">Intended status: Standards Track</td> |
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| 412 | <td class="header right">HP</td> |
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| 413 | </tr> |
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| 414 | <tr> |
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| 415 | <td class="header left">Expires: September 2009</td> |
|---|
| 416 | <td class="header right">H. Frystyk</td> |
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| 417 | </tr> |
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| 418 | <tr> |
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| 419 | <td class="header left"></td> |
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| 420 | <td class="header right">Microsoft</td> |
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| 421 | </tr> |
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| 422 | <tr> |
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| 423 | <td class="header left"></td> |
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| 424 | <td class="header right">L. Masinter</td> |
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| 425 | </tr> |
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| 426 | <tr> |
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| 427 | <td class="header left"></td> |
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| 428 | <td class="header right">Adobe Systems</td> |
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| 429 | </tr> |
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| 430 | <tr> |
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| 431 | <td class="header left"></td> |
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| 432 | <td class="header right">P. Leach</td> |
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| 433 | </tr> |
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| 434 | <tr> |
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| 435 | <td class="header left"></td> |
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| 436 | <td class="header right">Microsoft</td> |
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| 437 | </tr> |
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| 438 | <tr> |
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| 439 | <td class="header left"></td> |
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| 440 | <td class="header right">T. Berners-Lee</td> |
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| 441 | </tr> |
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| 442 | <tr> |
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| 443 | <td class="header left"></td> |
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| 444 | <td class="header right">W3C/MIT</td> |
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| 445 | </tr> |
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| 446 | <tr> |
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| 447 | <td class="header left"></td> |
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| 448 | <td class="header right">Y. Lafon, Editor</td> |
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| 449 | </tr> |
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| 450 | <tr> |
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| 451 | <td class="header left"></td> |
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| 452 | <td class="header right">W3C</td> |
|---|
| 453 | </tr> |
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| 454 | <tr> |
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| 455 | <td class="header left"></td> |
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| 456 | <td class="header right">J. F. Reschke, Editor</td> |
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| 457 | </tr> |
|---|
| 458 | <tr> |
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| 459 | <td class="header left"></td> |
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| 460 | <td class="header right">greenbytes</td> |
|---|
| 461 | </tr> |
|---|
| 462 | <tr> |
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| 463 | <td class="header left"></td> |
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| 464 | <td class="header right">March 2, 2009</td> |
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| 465 | </tr> |
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| 466 | </table> |
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| 467 | <p class="title">HTTP/1.1, part 7: Authentication<br><span class="filename">draft-ietf-httpbis-p7-auth-latest</span></p> |
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| 468 | <h1><a id="rfc.status" href="#rfc.status">Status of this Memo</a></h1> |
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| 469 | <p>This Internet-Draft is submitted to IETF pursuant to, and in full conformance with, the provisions of BCP 78 and BCP 79. This |
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| 470 | document may contain material from IETF Documents or IETF Contributions published or made publicly available before November |
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| 471 | 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to |
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| 472 | allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) |
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| 473 | controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative |
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| 474 | works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate |
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| 475 | it into languages other than English. |
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| 476 | </p> |
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| 477 | <p>Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note |
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| 478 | that other groups may also distribute working documents as Internet-Drafts. |
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| 479 | </p> |
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| 480 | <p>Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other |
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| 481 | documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as “work |
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| 482 | in progress”. |
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| 483 | </p> |
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| 484 | <p>The list of current Internet-Drafts can be accessed at <<a href="http://www.ietf.org/ietf/1id-abstracts.txt">http://www.ietf.org/ietf/1id-abstracts.txt</a>>. |
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| 485 | </p> |
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| 486 | <p>The list of Internet-Draft Shadow Directories can be accessed at <<a href="http://www.ietf.org/shadow.html">http://www.ietf.org/shadow.html</a>>. |
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| 487 | </p> |
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| 488 | <p>This Internet-Draft will expire in September 2009.</p> |
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| 489 | <h1><a id="rfc.copyrightnotice" href="#rfc.copyrightnotice">Copyright Notice</a></h1> |
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| 490 | <p>Copyright © 2009 IETF Trust and the persons identified as the document authors. All rights reserved.</p> |
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| 491 | <p>This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents in effect on the date |
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| 492 | of publication of this document (<a href="http://trustee.ietf.org/license-info">http://trustee.ietf.org/license-info</a>). Please review these documents carefully, as they describe your rights and restrictions with respect to this document. |
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| 493 | </p> |
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| 494 | <h1 id="rfc.abstract"><a href="#rfc.abstract">Abstract</a></h1> |
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| 495 | <p>The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information |
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| 496 | systems. HTTP has been in use by the World Wide Web global information initiative since 1990. This document is Part 7 of the |
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| 497 | seven-part specification that defines the protocol referred to as "HTTP/1.1" and, taken together, obsoletes RFC 2616. Part |
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| 498 | 7 defines HTTP Authentication. |
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| 499 | </p> |
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| 500 | <h1 id="rfc.note.1"><a href="#rfc.note.1">Editorial Note (To be removed by RFC Editor)</a></h1> |
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| 501 | <p>Discussion of this draft should take place on the HTTPBIS working group mailing list (ietf-http-wg@w3.org). The current issues |
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| 502 | list is at <<a href="http://tools.ietf.org/wg/httpbis/trac/report/11">http://tools.ietf.org/wg/httpbis/trac/report/11</a>> and related documents (including fancy diffs) can be found at <<a href="http://tools.ietf.org/wg/httpbis/">http://tools.ietf.org/wg/httpbis/</a>>. |
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| 503 | </p> |
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| 504 | <p>The changes in this draft are summarized in <a href="#changes.since.05" title="Since draft-ietf-httpbis-p7-auth-05">Appendix C.7</a>. |
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| 505 | </p> |
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| 506 | <hr class="noprint"> |
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| 507 | <h1 class="np" id="rfc.toc"><a href="#rfc.toc">Table of Contents</a></h1> |
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| 508 | <ul class="toc"> |
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| 509 | <li class="tocline0">1. <a href="#introduction">Introduction</a><ul class="toc"> |
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| 510 | <li class="tocline1">1.1 <a href="#intro.requirements">Requirements</a></li> |
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| 511 | <li class="tocline1">1.2 <a href="#notation">Syntax Notation</a><ul class="toc"> |
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| 512 | <li class="tocline1">1.2.1 <a href="#core.rules">Core Rules</a></li> |
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| 513 | <li class="tocline1">1.2.2 <a href="#abnf.dependencies">ABNF Rules defined in other Parts of the Specification</a></li> |
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| 514 | </ul> |
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| 515 | </li> |
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| 516 | </ul> |
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| 517 | </li> |
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| 518 | <li class="tocline0">2. <a href="#rfc.section.2">Status Code Definitions</a><ul class="toc"> |
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| 519 | <li class="tocline1">2.1 <a href="#status.401">401 Unauthorized</a></li> |
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| 520 | <li class="tocline1">2.2 <a href="#status.407">407 Proxy Authentication Required</a></li> |
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| 521 | </ul> |
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| 522 | </li> |
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| 523 | <li class="tocline0">3. <a href="#header.fields">Header Field Definitions</a><ul class="toc"> |
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| 524 | <li class="tocline1">3.1 <a href="#header.authorization">Authorization</a></li> |
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| 525 | <li class="tocline1">3.2 <a href="#header.proxy-authenticate">Proxy-Authenticate</a></li> |
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| 526 | <li class="tocline1">3.3 <a href="#header.proxy-authorization">Proxy-Authorization</a></li> |
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| 527 | <li class="tocline1">3.4 <a href="#header.www-authenticate">WWW-Authenticate</a></li> |
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| 528 | </ul> |
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| 529 | </li> |
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| 530 | <li class="tocline0">4. <a href="#IANA.considerations">IANA Considerations</a><ul class="toc"> |
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| 531 | <li class="tocline1">4.1 <a href="#message.header.registration">Message Header Registration</a></li> |
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| 532 | </ul> |
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| 533 | </li> |
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| 534 | <li class="tocline0">5. <a href="#security.considerations">Security Considerations</a><ul class="toc"> |
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| 535 | <li class="tocline1">5.1 <a href="#auth.credentials.and.idle.clients">Authentication Credentials and Idle Clients</a></li> |
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| 536 | </ul> |
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| 537 | </li> |
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| 538 | <li class="tocline0">6. <a href="#ack">Acknowledgments</a></li> |
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| 539 | <li class="tocline0">7. <a href="#rfc.references">References</a><ul class="toc"> |
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| 540 | <li class="tocline1">7.1 <a href="#rfc.references.1">Normative References</a></li> |
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| 541 | <li class="tocline1">7.2 <a href="#rfc.references.2">Informative References</a></li> |
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| 542 | </ul> |
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| 543 | </li> |
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| 544 | <li class="tocline0"><a href="#rfc.authors">Authors' Addresses</a></li> |
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| 545 | <li class="tocline0">A. <a href="#compatibility">Compatibility with Previous Versions</a><ul class="toc"> |
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| 546 | <li class="tocline1">A.1 <a href="#changes.from.rfc.2616">Changes from RFC 2616</a></li> |
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| 547 | </ul> |
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| 548 | </li> |
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| 549 | <li class="tocline0">B. <a href="#collected.abnf">Collected ABNF</a></li> |
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| 550 | <li class="tocline0">C. <a href="#change.log">Change Log (to be removed by RFC Editor before publication)</a><ul class="toc"> |
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| 551 | <li class="tocline1">C.1 <a href="#rfc.section.C.1">Since RFC2616</a></li> |
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| 552 | <li class="tocline1">C.2 <a href="#rfc.section.C.2">Since draft-ietf-httpbis-p7-auth-00</a></li> |
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| 553 | <li class="tocline1">C.3 <a href="#rfc.section.C.3">Since draft-ietf-httpbis-p7-auth-01</a></li> |
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| 554 | <li class="tocline1">C.4 <a href="#changes.since.02">Since draft-ietf-httpbis-p7-auth-02</a></li> |
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| 555 | <li class="tocline1">C.5 <a href="#changes.since.03">Since draft-ietf-httpbis-p7-auth-03</a></li> |
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| 556 | <li class="tocline1">C.6 <a href="#changes.since.04">Since draft-ietf-httpbis-p7-auth-04</a></li> |
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| 557 | <li class="tocline1">C.7 <a href="#changes.since.05">Since draft-ietf-httpbis-p7-auth-05</a></li> |
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| 558 | </ul> |
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| 559 | </li> |
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| 560 | <li class="tocline0"><a href="#rfc.index">Index</a></li> |
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| 561 | </ul> |
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| 562 | <h1 id="rfc.section.1" class="np"><a href="#rfc.section.1">1.</a> <a id="introduction" href="#introduction">Introduction</a></h1> |
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| 563 | <p id="rfc.section.1.p.1">This document defines HTTP/1.1 access control and authentication. Right now it includes the extracted relevant sections of <cite title="Hypertext Transfer Protocol -- HTTP/1.1" id="rfc.xref.RFC2616.1">RFC 2616</cite> with only minor changes. The intention is to move the general framework for HTTP authentication here, as currently specified |
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| 564 | in <a href="#RFC2617" id="rfc.xref.RFC2617.1"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>, and allow the individual authentication mechanisms to be defined elsewhere. This introduction will be rewritten when that |
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| 565 | occurs. |
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| 566 | </p> |
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| 567 | <p id="rfc.section.1.p.2">HTTP provides several <em class="bcp14">OPTIONAL</em> challenge-response authentication mechanisms which can be used by a server to challenge a client request and by a client to |
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| 568 | provide authentication information. The general framework for access authentication, and the specification of "basic" and |
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| 569 | "digest" authentication, are specified in "HTTP Authentication: Basic and Digest Access Authentication" <a href="#RFC2617" id="rfc.xref.RFC2617.2"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>. This specification adopts the definitions of "challenge" and "credentials" from that specification. |
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| 570 | </p> |
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| 571 | <h2 id="rfc.section.1.1"><a href="#rfc.section.1.1">1.1</a> <a id="intro.requirements" href="#intro.requirements">Requirements</a></h2> |
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| 572 | <p id="rfc.section.1.1.p.1">The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" |
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| 573 | in this document are to be interpreted as described in <a href="#RFC2119" id="rfc.xref.RFC2119.1"><cite title="Key words for use in RFCs to Indicate Requirement Levels">[RFC2119]</cite></a>. |
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| 574 | </p> |
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| 575 | <p id="rfc.section.1.1.p.2">An implementation is not compliant if it fails to satisfy one or more of the <em class="bcp14">MUST</em> or <em class="bcp14">REQUIRED</em> level requirements for the protocols it implements. An implementation that satisfies all the <em class="bcp14">MUST</em> or <em class="bcp14">REQUIRED</em> level and all the <em class="bcp14">SHOULD</em> level requirements for its protocols is said to be "unconditionally compliant"; one that satisfies all the <em class="bcp14">MUST</em> level requirements but not all the <em class="bcp14">SHOULD</em> level requirements for its protocols is said to be "conditionally compliant." |
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| 576 | </p> |
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| 577 | <h2 id="rfc.section.1.2"><a href="#rfc.section.1.2">1.2</a> <a id="notation" href="#notation">Syntax Notation</a></h2> |
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| 578 | <p id="rfc.section.1.2.p.1">This specification uses the ABNF syntax defined in <a href="p1-messaging.html#notation" title="Syntax Notation">Section 1.2</a> of <a href="#Part1" id="rfc.xref.Part1.1"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. The following core rules are included by reference, as defined in <a href="#RFC5234" id="rfc.xref.RFC5234.1"><cite title="Augmented BNF for Syntax Specifications: ABNF">[RFC5234]</cite></a>, <a href="http://tools.ietf.org/html/rfc5234#appendix-B.1">Appendix B.1</a>: ALPHA (letters), CR (carriage return), CRLF (CR LF), CTL (controls), DIGIT (decimal 0-9), DQUOTE (double quote), HEXDIG |
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| 579 | (hexadecimal 0-9/A-F/a-f), LF (line feed), OCTET (any 8-bit sequence of data), SP (space), VCHAR (any visible USASCII character), |
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| 580 | and WSP (whitespace). |
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| 581 | </p> |
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| 582 | <h3 id="rfc.section.1.2.1"><a href="#rfc.section.1.2.1">1.2.1</a> <a id="core.rules" href="#core.rules">Core Rules</a></h3> |
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| 583 | <p id="rfc.section.1.2.1.p.1">The core rules below are defined in <a href="p1-messaging.html#basic.rules" title="Basic Rules">Section 1.2.2</a> of <a href="#Part1" id="rfc.xref.Part1.2"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>: |
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| 584 | </p> |
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| 585 | <div id="rfc.figure.u.1"></div><pre class="inline"> <a href="#core.rules" class="smpl">OWS</a> = <OWS, defined in <a href="#Part1" id="rfc.xref.Part1.3"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#basic.rules" title="Basic Rules">Section 1.2.2</a>> |
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| 586 | </pre><h3 id="rfc.section.1.2.2"><a href="#rfc.section.1.2.2">1.2.2</a> <a id="abnf.dependencies" href="#abnf.dependencies">ABNF Rules defined in other Parts of the Specification</a></h3> |
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| 587 | <p id="rfc.section.1.2.2.p.1"> The ABNF rules below are defined in other specifications:</p> |
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| 588 | <div id="rfc.figure.u.2"></div><pre class="inline"><span id="rfc.iref.g.1"></span><span id="rfc.iref.g.2"></span> <a href="#abnf.dependencies" class="smpl">challenge</a> = <challenge, defined in <a href="#RFC2617" id="rfc.xref.RFC2617.3"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>, <a href="http://tools.ietf.org/html/rfc2617#section-1.2">Section 1.2</a>> |
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| 589 | <a href="#abnf.dependencies" class="smpl">credentials</a> = <credentials, defined in <a href="#RFC2617" id="rfc.xref.RFC2617.4"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>, <a href="http://tools.ietf.org/html/rfc2617#section-1.2">Section 1.2</a>> |
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| 590 | </pre><h1 id="rfc.section.2"><a href="#rfc.section.2">2.</a> Status Code Definitions |
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| 591 | </h1> |
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| 592 | <div id="rfc.iref.2"></div> |
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| 593 | <div id="rfc.iref.s.1"></div> |
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| 594 | <h2 id="rfc.section.2.1"><a href="#rfc.section.2.1">2.1</a> <a id="status.401" href="#status.401">401 Unauthorized</a></h2> |
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| 595 | <p id="rfc.section.2.1.p.1">The request requires user authentication. The response <em class="bcp14">MUST</em> include a WWW-Authenticate header field (<a href="#header.www-authenticate" id="rfc.xref.header.www-authenticate.1" title="WWW-Authenticate">Section 3.4</a>) containing a challenge applicable to the requested resource. The client <em class="bcp14">MAY</em> repeat the request with a suitable Authorization header field (<a href="#header.authorization" id="rfc.xref.header.authorization.1" title="Authorization">Section 3.1</a>). If the request already included Authorization credentials, then the 401 response indicates that authorization has been |
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| 596 | refused for those credentials. If the 401 response contains the same challenge as the prior response, and the user agent has |
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| 597 | already attempted authentication at least once, then the user <em class="bcp14">SHOULD</em> be presented the entity that was given in the response, since that entity might include relevant diagnostic information. HTTP |
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| 598 | access authentication is explained in "HTTP Authentication: Basic and Digest Access Authentication" <a href="#RFC2617" id="rfc.xref.RFC2617.5"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>. |
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| 599 | </p> |
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| 600 | <div id="rfc.iref.3"></div> |
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| 601 | <div id="rfc.iref.s.2"></div> |
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| 602 | <h2 id="rfc.section.2.2"><a href="#rfc.section.2.2">2.2</a> <a id="status.407" href="#status.407">407 Proxy Authentication Required</a></h2> |
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| 603 | <p id="rfc.section.2.2.p.1">This code is similar to 401 (Unauthorized), but indicates that the client must first authenticate itself with the proxy. The |
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| 604 | proxy <em class="bcp14">MUST</em> return a Proxy-Authenticate header field (<a href="#header.proxy-authenticate" id="rfc.xref.header.proxy-authenticate.1" title="Proxy-Authenticate">Section 3.2</a>) containing a challenge applicable to the proxy for the requested resource. The client <em class="bcp14">MAY</em> repeat the request with a suitable Proxy-Authorization header field (<a href="#header.proxy-authorization" id="rfc.xref.header.proxy-authorization.1" title="Proxy-Authorization">Section 3.3</a>). HTTP access authentication is explained in "HTTP Authentication: Basic and Digest Access Authentication" <a href="#RFC2617" id="rfc.xref.RFC2617.6"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>. |
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| 605 | </p> |
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| 606 | <h1 id="rfc.section.3"><a href="#rfc.section.3">3.</a> <a id="header.fields" href="#header.fields">Header Field Definitions</a></h1> |
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| 607 | <p id="rfc.section.3.p.1">This section defines the syntax and semantics of HTTP/1.1 header fields related to authentication.</p> |
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| 608 | <div id="rfc.iref.a.1"></div> |
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| 609 | <div id="rfc.iref.h.1"></div> |
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| 610 | <h2 id="rfc.section.3.1"><a href="#rfc.section.3.1">3.1</a> <a id="header.authorization" href="#header.authorization">Authorization</a></h2> |
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| 611 | <p id="rfc.section.3.1.p.1">A user agent that wishes to authenticate itself with a server-- usually, but not necessarily, after receiving a 401 response--does |
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| 612 | so by including an Authorization request-header field with the request. The field "Authorization" consists of credentials |
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| 613 | containing the authentication information of the user agent for the realm of the resource being requested. |
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| 614 | </p> |
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| 615 | <div id="rfc.figure.u.3"></div><pre class="inline"><span id="rfc.iref.g.3"></span><span id="rfc.iref.g.4"></span> <a href="#header.authorization" class="smpl">Authorization</a> = "Authorization" ":" <a href="#core.rules" class="smpl">OWS</a> <a href="#header.authorization" class="smpl">Authorization-v</a> |
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| 616 | <a href="#header.authorization" class="smpl">Authorization-v</a> = <a href="#abnf.dependencies" class="smpl">credentials</a> |
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| 617 | </pre><p id="rfc.section.3.1.p.3">HTTP access authentication is described in "HTTP Authentication: Basic and Digest Access Authentication" <a href="#RFC2617" id="rfc.xref.RFC2617.7"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>. If a request is authenticated and a realm specified, the same credentials <em class="bcp14">SHOULD</em> be valid for all other requests within this realm (assuming that the authentication scheme itself does not require otherwise, |
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| 618 | such as credentials that vary according to a challenge value or using synchronized clocks). |
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| 619 | </p> |
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| 620 | <p id="rfc.section.3.1.p.4">When a shared cache (see <a href="p6-cache.html#shared.and.non-shared.caches" title="ERROR: Anchor 'shared.and.non-shared.caches' not found in p6-cache.xml.">Appendix ERROR: Anchor 'shared.and.non-shared.caches' not found in p6-cache.xml.</a> of <a href="#Part6" id="rfc.xref.Part6.1"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>) receives a request containing an Authorization field, it <em class="bcp14">MUST NOT</em> return the corresponding response as a reply to any other request, unless one of the following specific exceptions holds: |
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| 621 | </p> |
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| 622 | <p id="rfc.section.3.1.p.5"> </p> |
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| 623 | <ol> |
|---|
| 624 | <li>If the response includes the "s-maxage" cache-control directive, the cache <em class="bcp14">MAY</em> use that response in replying to a subsequent request. But (if the specified maximum age has passed) a proxy cache <em class="bcp14">MUST</em> first revalidate it with the origin server, using the request-headers from the new request to allow the origin server to authenticate |
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| 625 | the new request. (This is the defined behavior for s-maxage.) If the response includes "s-maxage=0", the proxy <em class="bcp14">MUST</em> always revalidate it before re-using it. |
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| 626 | </li> |
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| 627 | <li>If the response includes the "must-revalidate" cache-control directive, the cache <em class="bcp14">MAY</em> use that response in replying to a subsequent request. But if the response is stale, all caches <em class="bcp14">MUST</em> first revalidate it with the origin server, using the request-headers from the new request to allow the origin server to authenticate |
|---|
| 628 | the new request. |
|---|
| 629 | </li> |
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| 630 | <li>If the response includes the "public" cache-control directive, it <em class="bcp14">MAY</em> be returned in reply to any subsequent request. |
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| 631 | </li> |
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| 632 | </ol> |
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| 633 | <div id="rfc.iref.p.1"></div> |
|---|
| 634 | <div id="rfc.iref.h.2"></div> |
|---|
| 635 | <h2 id="rfc.section.3.2"><a href="#rfc.section.3.2">3.2</a> <a id="header.proxy-authenticate" href="#header.proxy-authenticate">Proxy-Authenticate</a></h2> |
|---|
| 636 | <p id="rfc.section.3.2.p.1">The response-header field "Proxy-Authenticate" <em class="bcp14">MUST</em> be included as part of a 407 (Proxy Authentication Required) response. The field value consists of a challenge that indicates |
|---|
| 637 | the authentication scheme and parameters applicable to the proxy for this request-target. |
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| 638 | </p> |
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| 639 | <div id="rfc.figure.u.4"></div><pre class="inline"><span id="rfc.iref.g.5"></span><span id="rfc.iref.g.6"></span> <a href="#header.proxy-authenticate" class="smpl">Proxy-Authenticate</a> = "Proxy-Authenticate" ":" <a href="#core.rules" class="smpl">OWS</a> |
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| 640 | <a href="#header.proxy-authenticate" class="smpl">Proxy-Authenticate-v</a> |
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| 641 | <a href="#header.proxy-authenticate" class="smpl">Proxy-Authenticate-v</a> = 1#<a href="#abnf.dependencies" class="smpl">challenge</a> |
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| 642 | </pre><p id="rfc.section.3.2.p.3">The HTTP access authentication process is described in "HTTP Authentication: Basic and Digest Access Authentication" <a href="#RFC2617" id="rfc.xref.RFC2617.8"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>. Unlike WWW-Authenticate, the Proxy-Authenticate header field applies only to the current connection and <em class="bcp14">SHOULD NOT</em> be passed on to downstream clients. However, an intermediate proxy might need to obtain its own credentials by requesting |
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| 643 | them from the downstream client, which in some circumstances will appear as if the proxy is forwarding the Proxy-Authenticate |
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| 644 | header field. |
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| 645 | </p> |
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| 646 | <div id="rfc.iref.p.2"></div> |
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| 647 | <div id="rfc.iref.h.3"></div> |
|---|
| 648 | <h2 id="rfc.section.3.3"><a href="#rfc.section.3.3">3.3</a> <a id="header.proxy-authorization" href="#header.proxy-authorization">Proxy-Authorization</a></h2> |
|---|
| 649 | <p id="rfc.section.3.3.p.1">The request-header field "Proxy-Authorization" allows the client to identify itself (or its user) to a proxy which requires |
|---|
| 650 | authentication. The Proxy-Authorization field value consists of credentials containing the authentication information of the |
|---|
| 651 | user agent for the proxy and/or realm of the resource being requested. |
|---|
| 652 | </p> |
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| 653 | <div id="rfc.figure.u.5"></div><pre class="inline"><span id="rfc.iref.g.7"></span><span id="rfc.iref.g.8"></span> <a href="#header.proxy-authorization" class="smpl">Proxy-Authorization</a> = "Proxy-Authorization" ":" <a href="#core.rules" class="smpl">OWS</a> |
|---|
| 654 | <a href="#header.proxy-authorization" class="smpl">Proxy-Authorization-v</a> |
|---|
| 655 | <a href="#header.proxy-authorization" class="smpl">Proxy-Authorization-v</a> = <a href="#abnf.dependencies" class="smpl">credentials</a> |
|---|
| 656 | </pre><p id="rfc.section.3.3.p.3">The HTTP access authentication process is described in "HTTP Authentication: Basic and Digest Access Authentication" <a href="#RFC2617" id="rfc.xref.RFC2617.9"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>. Unlike Authorization, the Proxy-Authorization header field applies only to the next outbound proxy that demanded authentication |
|---|
| 657 | using the Proxy-Authenticate field. When multiple proxies are used in a chain, the Proxy-Authorization header field is consumed |
|---|
| 658 | by the first outbound proxy that was expecting to receive credentials. A proxy <em class="bcp14">MAY</em> relay the credentials from the client request to the next proxy if that is the mechanism by which the proxies cooperatively |
|---|
| 659 | authenticate a given request. |
|---|
| 660 | </p> |
|---|
| 661 | <div id="rfc.iref.w.1"></div> |
|---|
| 662 | <div id="rfc.iref.h.4"></div> |
|---|
| 663 | <h2 id="rfc.section.3.4"><a href="#rfc.section.3.4">3.4</a> <a id="header.www-authenticate" href="#header.www-authenticate">WWW-Authenticate</a></h2> |
|---|
| 664 | <p id="rfc.section.3.4.p.1">The WWW-Authenticate response-header field <em class="bcp14">MUST</em> be included in 401 (Unauthorized) response messages. The field value consists of at least one challenge that indicates the |
|---|
| 665 | authentication scheme(s) and parameters applicable to the request-target. |
|---|
| 666 | </p> |
|---|
| 667 | <div id="rfc.figure.u.6"></div><pre class="inline"><span id="rfc.iref.g.9"></span><span id="rfc.iref.g.10"></span> <a href="#header.www-authenticate" class="smpl">WWW-Authenticate</a> = "WWW-Authenticate" ":" <a href="#core.rules" class="smpl">OWS</a> <a href="#header.www-authenticate" class="smpl">WWW-Authenticate-v</a> |
|---|
| 668 | <a href="#header.www-authenticate" class="smpl">WWW-Authenticate-v</a> = 1#<a href="#abnf.dependencies" class="smpl">challenge</a> |
|---|
| 669 | </pre><p id="rfc.section.3.4.p.3">The HTTP access authentication process is described in "HTTP Authentication: Basic and Digest Access Authentication" <a href="#RFC2617" id="rfc.xref.RFC2617.10"><cite title="HTTP Authentication: Basic and Digest Access Authentication">[RFC2617]</cite></a>. User agents are advised to take special care in parsing the WWW-Authenticate field value as it might contain more than one |
|---|
| 670 | challenge, or if more than one WWW-Authenticate header field is provided, the contents of a challenge itself can contain a |
|---|
| 671 | comma-separated list of authentication parameters. |
|---|
| 672 | </p> |
|---|
| 673 | <h1 id="rfc.section.4"><a href="#rfc.section.4">4.</a> <a id="IANA.considerations" href="#IANA.considerations">IANA Considerations</a></h1> |
|---|
| 674 | <h2 id="rfc.section.4.1"><a href="#rfc.section.4.1">4.1</a> <a id="message.header.registration" href="#message.header.registration">Message Header Registration</a></h2> |
|---|
| 675 | <p id="rfc.section.4.1.p.1">The Message Header Registry located at <<a href="http://www.iana.org/assignments/message-headers/message-header-index.html">http://www.iana.org/assignments/message-headers/message-header-index.html</a>> should be updated with the permanent registrations below (see <a href="#RFC3864" id="rfc.xref.RFC3864.1"><cite title="Registration Procedures for Message Header Fields">[RFC3864]</cite></a>): |
|---|
| 676 | </p> |
|---|
| 677 | <div id="rfc.table.1"> |
|---|
| 678 | <div id="iana.header.registration.table"></div> |
|---|
| 679 | <table summary="" class="tt full" cellpadding="3" cellspacing="0"> |
|---|
| 680 | <thead> |
|---|
| 681 | <tr> |
|---|
| 682 | <th>Header Field Name</th> |
|---|
| 683 | <th>Protocol</th> |
|---|
| 684 | <th>Status</th> |
|---|
| 685 | <th>Reference</th> |
|---|
| 686 | </tr> |
|---|
| 687 | </thead> |
|---|
| 688 | <tbody> |
|---|
| 689 | <tr> |
|---|
| 690 | <td>Authorization</td> |
|---|
| 691 | <td>http</td> |
|---|
| 692 | <td>standard</td> |
|---|
| 693 | <td> <a href="#header.authorization" id="rfc.xref.header.authorization.2" title="Authorization">Section 3.1</a> |
|---|
| 694 | </td> |
|---|
| 695 | </tr> |
|---|
| 696 | <tr> |
|---|
| 697 | <td>Proxy-Authenticate</td> |
|---|
| 698 | <td>http</td> |
|---|
| 699 | <td>standard</td> |
|---|
| 700 | <td> <a href="#header.proxy-authenticate" id="rfc.xref.header.proxy-authenticate.2" title="Proxy-Authenticate">Section 3.2</a> |
|---|
| 701 | </td> |
|---|
| 702 | </tr> |
|---|
| 703 | <tr> |
|---|
| 704 | <td>Proxy-Authorization</td> |
|---|
| 705 | <td>http</td> |
|---|
| 706 | <td>standard</td> |
|---|
| 707 | <td> <a href="#header.proxy-authorization" id="rfc.xref.header.proxy-authorization.2" title="Proxy-Authorization">Section 3.3</a> |
|---|
| 708 | </td> |
|---|
| 709 | </tr> |
|---|
| 710 | <tr> |
|---|
| 711 | <td>WWW-Authenticate</td> |
|---|
| 712 | <td>http</td> |
|---|
| 713 | <td>standard</td> |
|---|
| 714 | <td> <a href="#header.www-authenticate" id="rfc.xref.header.www-authenticate.2" title="WWW-Authenticate">Section 3.4</a> |
|---|
| 715 | </td> |
|---|
| 716 | </tr> |
|---|
| 717 | </tbody> |
|---|
| 718 | </table> |
|---|
| 719 | </div> |
|---|
| 720 | <p id="rfc.section.4.1.p.2">The change controller is: "IETF (iesg@ietf.org) - Internet Engineering Task Force".</p> |
|---|
| 721 | <h1 id="rfc.section.5"><a href="#rfc.section.5">5.</a> <a id="security.considerations" href="#security.considerations">Security Considerations</a></h1> |
|---|
| 722 | <p id="rfc.section.5.p.1">This section is meant to inform application developers, information providers, and users of the security limitations in HTTP/1.1 |
|---|
| 723 | as described by this document. The discussion does not include definitive solutions to the problems revealed, though it does |
|---|
| 724 | make some suggestions for reducing security risks. |
|---|
| 725 | </p> |
|---|
| 726 | <h2 id="rfc.section.5.1"><a href="#rfc.section.5.1">5.1</a> <a id="auth.credentials.and.idle.clients" href="#auth.credentials.and.idle.clients">Authentication Credentials and Idle Clients</a></h2> |
|---|
| 727 | <p id="rfc.section.5.1.p.1">Existing HTTP clients and user agents typically retain authentication information indefinitely. HTTP/1.1 does not provide |
|---|
| 728 | a method for a server to direct clients to discard these cached credentials. This is a significant defect that requires further |
|---|
| 729 | extensions to HTTP. Circumstances under which credential caching can interfere with the application's security model include |
|---|
| 730 | but are not limited to: |
|---|
| 731 | </p> |
|---|
| 732 | <ul> |
|---|
| 733 | <li>Clients which have been idle for an extended period following which the server might wish to cause the client to reprompt |
|---|
| 734 | the user for credentials. |
|---|
| 735 | </li> |
|---|
| 736 | <li>Applications which include a session termination indication (such as a `logout' or `commit' button on a page) after which |
|---|
| 737 | the server side of the application `knows' that there is no further reason for the client to retain the credentials. |
|---|
| 738 | </li> |
|---|
| 739 | </ul> |
|---|
| 740 | <p id="rfc.section.5.1.p.2">This is currently under separate study. There are a number of work-arounds to parts of this problem, and we encourage the |
|---|
| 741 | use of password protection in screen savers, idle time-outs, and other methods which mitigate the security problems inherent |
|---|
| 742 | in this problem. In particular, user agents which cache credentials are encouraged to provide a readily accessible mechanism |
|---|
| 743 | for discarding cached credentials under user control. |
|---|
| 744 | </p> |
|---|
| 745 | <h1 id="rfc.section.6"><a href="#rfc.section.6">6.</a> <a id="ack" href="#ack">Acknowledgments</a></h1> |
|---|
| 746 | <p id="rfc.section.6.p.1"> <span class="comment">[rfc.comment.1: TBD.]</span> |
|---|
| 747 | </p> |
|---|
| 748 | <h1 id="rfc.references"><a id="rfc.section.7" href="#rfc.section.7">7.</a> References |
|---|
| 749 | </h1> |
|---|
| 750 | <h2 id="rfc.references.1"><a href="#rfc.section.7.1" id="rfc.section.7.1">7.1</a> Normative References |
|---|
| 751 | </h2> |
|---|
| 752 | <table summary="Normative References"> |
|---|
| 753 | <tr> |
|---|
| 754 | <td class="reference"><b id="Part1">[Part1]</b></td> |
|---|
| 755 | <td class="top"><a title="Day Software">Fielding, R., Ed.</a>, <a title="One Laptop per Child">Gettys, J.</a>, <a title="Hewlett-Packard Company">Mogul, J.</a>, <a title="Microsoft Corporation">Frystyk, H.</a>, <a title="Adobe Systems, Incorporated">Masinter, L.</a>, <a title="Microsoft Corporation">Leach, P.</a>, <a title="World Wide Web Consortium">Berners-Lee, T.</a>, <a title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a title="greenbytes GmbH">J. F. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-latest">HTTP/1.1, part 1: URIs, Connections, and Message Parsing</a>”, Internet-Draft draft-ietf-httpbis-p1-messaging-latest (work in progress), March 2009. |
|---|
| 756 | </td> |
|---|
| 757 | </tr> |
|---|
| 758 | <tr> |
|---|
| 759 | <td class="reference"><b id="Part6">[Part6]</b></td> |
|---|
| 760 | <td class="top"><a title="Day Software">Fielding, R., Ed.</a>, <a title="One Laptop per Child">Gettys, J.</a>, <a title="Hewlett-Packard Company">Mogul, J.</a>, <a title="Microsoft Corporation">Frystyk, H.</a>, <a title="Adobe Systems, Incorporated">Masinter, L.</a>, <a title="Microsoft Corporation">Leach, P.</a>, <a title="World Wide Web Consortium">Berners-Lee, T.</a>, <a title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a title="greenbytes GmbH">J. F. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p6-cache-latest">HTTP/1.1, part 6: Caching</a>”, Internet-Draft draft-ietf-httpbis-p6-cache-latest (work in progress), March 2009. |
|---|
| 761 | </td> |
|---|
| 762 | </tr> |
|---|
| 763 | <tr> |
|---|
| 764 | <td class="reference"><b id="RFC2119">[RFC2119]</b></td> |
|---|
| 765 | <td class="top"><a title="Harvard University">Bradner, S.</a>, “<a href="http://tools.ietf.org/html/rfc2119">Key words for use in RFCs to Indicate Requirement Levels</a>”, BCP 14, RFC 2119, March 1997. |
|---|
| 766 | </td> |
|---|
| 767 | </tr> |
|---|
| 768 | <tr> |
|---|
| 769 | <td class="reference"><b id="RFC2617">[RFC2617]</b></td> |
|---|
| 770 | <td class="top"><a title="Northwestern University, Department of Mathematics">Franks, J.</a>, <a title="Verisign Inc.">Hallam-Baker, P.M.</a>, <a title="AbiSource, Inc.">Hostetler, J.L.</a>, <a title="Agranat Systems, Inc.">Lawrence, S.D.</a>, <a title="Microsoft Corporation">Leach, P.J.</a>, Luotonen, A., and <a title="Open Market, Inc.">L. Stewart</a>, “<a href="http://tools.ietf.org/html/rfc2617">HTTP Authentication: Basic and Digest Access Authentication</a>”, RFC 2617, June 1999. |
|---|
| 771 | </td> |
|---|
| 772 | </tr> |
|---|
| 773 | <tr> |
|---|
| 774 | <td class="reference"><b id="RFC5234">[RFC5234]</b></td> |
|---|
| 775 | <td class="top"><a title="Brandenburg InternetWorking">Crocker, D., Ed.</a> and <a title="THUS plc.">P. Overell</a>, “<a href="http://tools.ietf.org/html/rfc5234">Augmented BNF for Syntax Specifications: ABNF</a>”, STD 68, RFC 5234, January 2008. |
|---|
| 776 | </td> |
|---|
| 777 | </tr> |
|---|
| 778 | </table> |
|---|
| 779 | <h2 id="rfc.references.2"><a href="#rfc.section.7.2" id="rfc.section.7.2">7.2</a> Informative References |
|---|
| 780 | </h2> |
|---|
| 781 | <table summary="Informative References"> |
|---|
| 782 | <tr> |
|---|
| 783 | <td class="reference"><b id="RFC2616">[RFC2616]</b></td> |
|---|
| 784 | <td class="top"><a title="University of California, Irvine">Fielding, R.</a>, <a title="W3C">Gettys, J.</a>, <a title="Compaq Computer Corporation">Mogul, J.</a>, <a title="MIT Laboratory for Computer Science">Frystyk, H.</a>, <a title="Xerox Corporation">Masinter, L.</a>, <a title="Microsoft Corporation">Leach, P.</a>, and <a title="W3C">T. Berners-Lee</a>, “<a href="http://tools.ietf.org/html/rfc2616">Hypertext Transfer Protocol -- HTTP/1.1</a>”, RFC 2616, June 1999. |
|---|
| 785 | </td> |
|---|
| 786 | </tr> |
|---|
| 787 | <tr> |
|---|
| 788 | <td class="reference"><b id="RFC3864">[RFC3864]</b></td> |
|---|
| 789 | <td class="top"><a title="Nine by Nine">Klyne, G.</a>, <a title="BEA Systems">Nottingham, M.</a>, and <a title="HP Labs">J. Mogul</a>, “<a href="http://tools.ietf.org/html/rfc3864">Registration Procedures for Message Header Fields</a>”, BCP 90, RFC 3864, September 2004. |
|---|
| 790 | </td> |
|---|
| 791 | </tr> |
|---|
| 792 | </table> |
|---|
| 793 | <h1 id="rfc.authors"><a href="#rfc.authors">Authors' Addresses</a></h1> |
|---|
| 794 | <address class="vcard"><span class="vcardline"><span class="fn">Roy T. Fielding</span> |
|---|
| 795 | (editor) |
|---|
| 796 | <span class="n hidden"><span class="family-name">Fielding</span><span class="given-name">Roy T.</span></span></span><span class="org vcardline">Day Software</span><span class="adr"><span class="street-address vcardline">23 Corporate Plaza DR, Suite 280</span><span class="vcardline"><span class="locality">Newport Beach</span>, <span class="region">CA</span> <span class="postal-code">92660</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline tel">Phone: <a href="tel:+1-949-706-5300"><span class="value">+1-949-706-5300</span></a></span><span class="vcardline tel"><span class="type">Fax</span>: <a href="fax:+1-949-706-5305"><span class="value">+1-949-706-5305</span></a></span><span class="vcardline">EMail: <a><span class="email">fielding@gbiv.com</span></a></span><span class="vcardline">URI: <a href="http://roy.gbiv.com/" class="url">http://roy.gbiv.com/</a></span></address> |
|---|
| 797 | <address class="vcard"><span class="vcardline"><span class="fn">Jim Gettys</span><span class="n hidden"><span class="family-name">Gettys</span><span class="given-name">Jim</span></span></span><span class="org vcardline">One Laptop per Child</span><span class="adr"><span class="street-address vcardline">21 Oak Knoll Road</span><span class="vcardline"><span class="locality">Carlisle</span>, <span class="region">MA</span> <span class="postal-code">01741</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">jg@laptop.org</span></a></span><span class="vcardline">URI: <a href="http://www.laptop.org/" class="url">http://www.laptop.org/</a></span></address> |
|---|
| 798 | <address class="vcard"><span class="vcardline"><span class="fn">Jeffrey C. Mogul</span><span class="n hidden"><span class="family-name">Mogul</span><span class="given-name">Jeffrey C.</span></span></span><span class="org vcardline">Hewlett-Packard Company</span><span class="adr"><span class="street-address vcardline">HP Labs, Large Scale Systems Group</span><span class="street-address vcardline">1501 Page Mill Road, MS 1177</span><span class="vcardline"><span class="locality">Palo Alto</span>, <span class="region">CA</span> <span class="postal-code">94304</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">JeffMogul@acm.org</span></a></span></address> |
|---|
| 799 | <address class="vcard"><span class="vcardline"><span class="fn">Henrik Frystyk Nielsen</span><span class="n hidden"><span class="family-name">Frystyk</span></span></span><span class="org vcardline">Microsoft Corporation</span><span class="adr"><span class="street-address vcardline">1 Microsoft Way</span><span class="vcardline"><span class="locality">Redmond</span>, <span class="region">WA</span> <span class="postal-code">98052</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">henrikn@microsoft.com</span></a></span></address> |
|---|
| 800 | <address class="vcard"><span class="vcardline"><span class="fn">Larry Masinter</span><span class="n hidden"><span class="family-name">Masinter</span><span class="given-name">Larry</span></span></span><span class="org vcardline">Adobe Systems, Incorporated</span><span class="adr"><span class="street-address vcardline">345 Park Ave</span><span class="vcardline"><span class="locality">San Jose</span>, <span class="region">CA</span> <span class="postal-code">95110</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">LMM@acm.org</span></a></span><span class="vcardline">URI: <a href="http://larry.masinter.net/" class="url">http://larry.masinter.net/</a></span></address> |
|---|
| 801 | <address class="vcard"><span class="vcardline"><span class="fn">Paul J. Leach</span><span class="n hidden"><span class="family-name">Leach</span><span class="given-name">Paul J.</span></span></span><span class="org vcardline">Microsoft Corporation</span><span class="adr"><span class="street-address vcardline">1 Microsoft Way</span><span class="vcardline"><span class="locality">Redmond</span>, <span class="region">WA</span> <span class="postal-code">98052</span></span></span><span class="vcardline">EMail: <a><span class="email">paulle@microsoft.com</span></a></span></address> |
|---|
| 802 | <address class="vcard"><span class="vcardline"><span class="fn">Tim Berners-Lee</span><span class="n hidden"><span class="family-name">Berners-Lee</span><span class="given-name">Tim</span></span></span><span class="org vcardline">World Wide Web Consortium</span><span class="adr"><span class="street-address vcardline">MIT Computer Science and Artificial Intelligence Laboratory</span><span class="street-address vcardline">The Stata Center, Building 32</span><span class="street-address vcardline">32 Vassar Street</span><span class="vcardline"><span class="locality">Cambridge</span>, <span class="region">MA</span> <span class="postal-code">02139</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">timbl@w3.org</span></a></span><span class="vcardline">URI: <a href="http://www.w3.org/People/Berners-Lee/" class="url">http://www.w3.org/People/Berners-Lee/</a></span></address> |
|---|
| 803 | <address class="vcard"><span class="vcardline"><span class="fn">Yves Lafon</span> |
|---|
| 804 | (editor) |
|---|
| 805 | <span class="n hidden"><span class="family-name">Lafon</span><span class="given-name">Yves</span></span></span><span class="org vcardline">World Wide Web Consortium</span><span class="adr"><span class="street-address vcardline">W3C / ERCIM</span><span class="street-address vcardline">2004, rte des Lucioles</span><span class="vcardline"><span class="locality">Sophia-Antipolis</span>, <span class="region">AM</span> <span class="postal-code">06902</span></span><span class="country-name vcardline">France</span></span><span class="vcardline">EMail: <a><span class="email">ylafon@w3.org</span></a></span><span class="vcardline">URI: <a href="http://www.raubacapeu.net/people/yves/" class="url">http://www.raubacapeu.net/people/yves/</a></span></address> |
|---|
| 806 | <address class="vcard"><span class="vcardline"><span class="fn">Julian F. Reschke</span> |
|---|
| 807 | (editor) |
|---|
| 808 | <span class="n hidden"><span class="family-name">Reschke</span><span class="given-name">Julian F.</span></span></span><span class="org vcardline">greenbytes GmbH</span><span class="adr"><span class="street-address vcardline">Hafenweg 16</span><span class="vcardline"><span class="locality">Muenster</span>, <span class="region">NW</span> <span class="postal-code">48155</span></span><span class="country-name vcardline">Germany</span></span><span class="vcardline tel">Phone: <a href="tel:+492512807760"><span class="value">+49 251 2807760</span></a></span><span class="vcardline tel"><span class="type">Fax</span>: <a href="fax:+492512807761"><span class="value">+49 251 2807761</span></a></span><span class="vcardline">EMail: <a><span class="email">julian.reschke@greenbytes.de</span></a></span><span class="vcardline">URI: <a href="http://greenbytes.de/tech/webdav/" class="url">http://greenbytes.de/tech/webdav/</a></span></address> |
|---|
| 809 | <h1 id="rfc.section.A"><a href="#rfc.section.A">A.</a> <a id="compatibility" href="#compatibility">Compatibility with Previous Versions</a></h1> |
|---|
| 810 | <h2 id="rfc.section.A.1"><a href="#rfc.section.A.1">A.1</a> <a id="changes.from.rfc.2616" href="#changes.from.rfc.2616">Changes from RFC 2616</a></h2> |
|---|
| 811 | <h1 id="rfc.section.B"><a href="#rfc.section.B">B.</a> <a id="collected.abnf" href="#collected.abnf">Collected ABNF</a></h1> |
|---|
| 812 | <div id="rfc.figure.u.7"></div> <pre class="inline"><a href="#header.authorization" class="smpl">Authorization</a> = "Authorization:" OWS Authorization-v |
|---|
| 813 | <a href="#header.authorization" class="smpl">Authorization-v</a> = credentials |
|---|
| 814 | |
|---|
| 815 | <a href="#core.rules" class="smpl">OWS</a> = <OWS, defined in [Part1], Section 1.2.2> |
|---|
| 816 | |
|---|
| 817 | <a href="#header.proxy-authenticate" class="smpl">Proxy-Authenticate</a> = "Proxy-Authenticate:" OWS Proxy-Authenticate-v |
|---|
| 818 | <a href="#header.proxy-authenticate" class="smpl">Proxy-Authenticate-v</a> = *( "," OWS ) challenge *( OWS "," [ OWS |
|---|
| 819 | challenge ] ) |
|---|
| 820 | <a href="#header.proxy-authorization" class="smpl">Proxy-Authorization</a> = "Proxy-Authorization:" OWS |
|---|
| 821 | Proxy-Authorization-v |
|---|
| 822 | <a href="#header.proxy-authorization" class="smpl">Proxy-Authorization-v</a> = credentials |
|---|
| 823 | |
|---|
| 824 | <a href="#header.www-authenticate" class="smpl">WWW-Authenticate</a> = "WWW-Authenticate:" OWS WWW-Authenticate-v |
|---|
| 825 | <a href="#header.www-authenticate" class="smpl">WWW-Authenticate-v</a> = *( "," OWS ) challenge *( OWS "," [ OWS |
|---|
| 826 | challenge ] ) |
|---|
| 827 | |
|---|
| 828 | <a href="#abnf.dependencies" class="smpl">challenge</a> = <challenge, defined in [RFC2617], Section 1.2> |
|---|
| 829 | <a href="#abnf.dependencies" class="smpl">credentials</a> = <credentials, defined in [RFC2617], Section 1.2> |
|---|
| 830 | |
|---|
| 831 | |
|---|
| 832 | </pre> <div id="rfc.figure.u.8"></div> |
|---|
| 833 | <p>ABNF diagnostics:</p><pre class="inline">; Authorization defined but not used |
|---|
| 834 | ; Proxy-Authenticate defined but not used |
|---|
| 835 | ; Proxy-Authorization defined but not used |
|---|
| 836 | ; WWW-Authenticate defined but not used |
|---|
| 837 | </pre><h1 id="rfc.section.C"><a href="#rfc.section.C">C.</a> <a id="change.log" href="#change.log">Change Log (to be removed by RFC Editor before publication)</a></h1> |
|---|
| 838 | <h2 id="rfc.section.C.1"><a href="#rfc.section.C.1">C.1</a> Since RFC2616 |
|---|
| 839 | </h2> |
|---|
| 840 | <p id="rfc.section.C.1.p.1">Extracted relevant partitions from <a href="#RFC2616" id="rfc.xref.RFC2616.2"><cite title="Hypertext Transfer Protocol -- HTTP/1.1">[RFC2616]</cite></a>. |
|---|
| 841 | </p> |
|---|
| 842 | <h2 id="rfc.section.C.2"><a href="#rfc.section.C.2">C.2</a> Since draft-ietf-httpbis-p7-auth-00 |
|---|
| 843 | </h2> |
|---|
| 844 | <p id="rfc.section.C.2.p.1">Closed issues: </p> |
|---|
| 845 | <ul> |
|---|
| 846 | <li> <<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/35">http://tools.ietf.org/wg/httpbis/trac/ticket/35</a>>: "Normative and Informative references" |
|---|
| 847 | </li> |
|---|
| 848 | </ul> |
|---|
| 849 | <h2 id="rfc.section.C.3"><a href="#rfc.section.C.3">C.3</a> Since draft-ietf-httpbis-p7-auth-01 |
|---|
| 850 | </h2> |
|---|
| 851 | <p id="rfc.section.C.3.p.1">Ongoing work on ABNF conversion (<<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/36">http://tools.ietf.org/wg/httpbis/trac/ticket/36</a>>): |
|---|
| 852 | </p> |
|---|
| 853 | <ul> |
|---|
| 854 | <li>Explicitly import BNF rules for "challenge" and "credentials" from RFC2617.</li> |
|---|
| 855 | <li>Add explicit references to BNF syntax and rules imported from other parts of the specification.</li> |
|---|
| 856 | </ul> |
|---|
| 857 | <h2 id="rfc.section.C.4"><a href="#rfc.section.C.4">C.4</a> <a id="changes.since.02" href="#changes.since.02">Since draft-ietf-httpbis-p7-auth-02</a></h2> |
|---|
| 858 | <p id="rfc.section.C.4.p.1">Ongoing work on IANA Message Header Registration (<<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/40">http://tools.ietf.org/wg/httpbis/trac/ticket/40</a>>): |
|---|
| 859 | </p> |
|---|
| 860 | <ul> |
|---|
| 861 | <li>Reference RFC 3984, and update header registrations for headers defined in this document.</li> |
|---|
| 862 | </ul> |
|---|
| 863 | <h2 id="rfc.section.C.5"><a href="#rfc.section.C.5">C.5</a> <a id="changes.since.03" href="#changes.since.03">Since draft-ietf-httpbis-p7-auth-03</a></h2> |
|---|
| 864 | <h2 id="rfc.section.C.6"><a href="#rfc.section.C.6">C.6</a> <a id="changes.since.04" href="#changes.since.04">Since draft-ietf-httpbis-p7-auth-04</a></h2> |
|---|
| 865 | <p id="rfc.section.C.6.p.1">Ongoing work on ABNF conversion (<<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/36">http://tools.ietf.org/wg/httpbis/trac/ticket/36</a>>): |
|---|
| 866 | </p> |
|---|
| 867 | <ul> |
|---|
| 868 | <li>Use "/" instead of "|" for alternatives.</li> |
|---|
| 869 | <li>Introduce new ABNF rules for "bad" whitespace ("BWS"), optional whitespace ("OWS") and required whitespace ("RWS").</li> |
|---|
| 870 | <li>Rewrite ABNFs to spell out whitespace rules, factor out header value format definitions.</li> |
|---|
| 871 | </ul> |
|---|
| 872 | <h2 id="rfc.section.C.7"><a href="#rfc.section.C.7">C.7</a> <a id="changes.since.05" href="#changes.since.05">Since draft-ietf-httpbis-p7-auth-05</a></h2> |
|---|
| 873 | <p id="rfc.section.C.7.p.1">Ongoing work on ABNF conversion (<<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/36">http://tools.ietf.org/wg/httpbis/trac/ticket/36</a>>): |
|---|
| 874 | </p> |
|---|
| 875 | <ul> |
|---|
| 876 | <li>Add appendix containing collected and expanded ABNF, reorganize ABNF introduction.</li> |
|---|
| 877 | </ul> |
|---|
| 878 | <h1 id="rfc.index"><a href="#rfc.index">Index</a></h1> |
|---|
| 879 | <p class="noprint"><a href="#rfc.index.4">4</a> <a href="#rfc.index.A">A</a> <a href="#rfc.index.G">G</a> <a href="#rfc.index.H">H</a> <a href="#rfc.index.P">P</a> <a href="#rfc.index.R">R</a> <a href="#rfc.index.S">S</a> <a href="#rfc.index.W">W</a> |
|---|
| 880 | </p> |
|---|
| 881 | <div class="print2col"> |
|---|
| 882 | <ul class="ind"> |
|---|
| 883 | <li class="indline0"><a id="rfc.index.4" href="#rfc.index.4"><b>4</b></a><ul class="ind"> |
|---|
| 884 | <li class="indline1">401 Unauthorized (status code) <a class="iref" href="#rfc.iref.2"><b>2.1</b></a></li> |
|---|
| 885 | <li class="indline1">407 Proxy Authentication Required (status code) <a class="iref" href="#rfc.iref.3"><b>2.2</b></a></li> |
|---|
| 886 | </ul> |
|---|
| 887 | </li> |
|---|
| 888 | <li class="indline0"><a id="rfc.index.A" href="#rfc.index.A"><b>A</b></a><ul class="ind"> |
|---|
| 889 | <li class="indline1">Authorization header <a class="iref" href="#rfc.xref.header.authorization.1">2.1</a>, <a class="iref" href="#rfc.iref.a.1"><b>3.1</b></a>, <a class="iref" href="#rfc.xref.header.authorization.2">4.1</a></li> |
|---|
| 890 | </ul> |
|---|
| 891 | </li> |
|---|
| 892 | <li class="indline0"><a id="rfc.index.G" href="#rfc.index.G"><b>G</b></a><ul class="ind"> |
|---|
| 893 | <li class="indline1"><tt>Grammar</tt> |
|---|
| 894 | <ul class="ind"> |
|---|
| 895 | <li class="indline1"><tt>Authorization</tt> <a class="iref" href="#rfc.iref.g.3"><b>3.1</b></a></li> |
|---|
| 896 | <li class="indline1"><tt>Authorization-v</tt> <a class="iref" href="#rfc.iref.g.4"><b>3.1</b></a></li> |
|---|
| 897 | <li class="indline1"><tt>challenge</tt> <a class="iref" href="#rfc.iref.g.1"><b>1.2.2</b></a></li> |
|---|
| 898 | <li class="indline1"><tt>credentials</tt> <a class="iref" href="#rfc.iref.g.2"><b>1.2.2</b></a></li> |
|---|
| 899 | <li class="indline1"><tt>Proxy-Authenticate</tt> <a class="iref" href="#rfc.iref.g.5"><b>3.2</b></a></li> |
|---|
| 900 | <li class="indline1"><tt>Proxy-Authenticate-v</tt> <a class="iref" href="#rfc.iref.g.6"><b>3.2</b></a></li> |
|---|
| 901 | <li class="indline1"><tt>Proxy-Authorization</tt> <a class="iref" href="#rfc.iref.g.7"><b>3.3</b></a></li> |
|---|
| 902 | <li class="indline1"><tt>Proxy-Authorization-v</tt> <a class="iref" href="#rfc.iref.g.8"><b>3.3</b></a></li> |
|---|
| 903 | <li class="indline1"><tt>WWW-Authenticate</tt> <a class="iref" href="#rfc.iref.g.9"><b>3.4</b></a></li> |
|---|
| 904 | <li class="indline1"><tt>WWW-Authenticate-v</tt> <a class="iref" href="#rfc.iref.g.10"><b>3.4</b></a></li> |
|---|
| 905 | </ul> |
|---|
| 906 | </li> |
|---|
| 907 | </ul> |
|---|
| 908 | </li> |
|---|
| 909 | <li class="indline0"><a id="rfc.index.H" href="#rfc.index.H"><b>H</b></a><ul class="ind"> |
|---|
| 910 | <li class="indline1">Headers |
|---|
| 911 | <ul class="ind"> |
|---|
| 912 | <li class="indline1">Authorization <a class="iref" href="#rfc.xref.header.authorization.1">2.1</a>, <a class="iref" href="#rfc.iref.h.1"><b>3.1</b></a>, <a class="iref" href="#rfc.xref.header.authorization.2">4.1</a></li> |
|---|
| 913 | <li class="indline1">Proxy-Authenticate <a class="iref" href="#rfc.xref.header.proxy-authenticate.1">2.2</a>, <a class="iref" href="#rfc.iref.h.2"><b>3.2</b></a>, <a class="iref" href="#rfc.xref.header.proxy-authenticate.2">4.1</a></li> |
|---|
| 914 | <li class="indline1">Proxy-Authorization <a class="iref" href="#rfc.xref.header.proxy-authorization.1">2.2</a>, <a class="iref" href="#rfc.iref.h.3"><b>3.3</b></a>, <a class="iref" href="#rfc.xref.header.proxy-authorization.2">4.1</a></li> |
|---|
| 915 | <li class="indline1">WWW-Authenticate <a class="iref" href="#rfc.xref.header.www-authenticate.1">2.1</a>, <a class="iref" href="#rfc.iref.h.4"><b>3.4</b></a>, <a class="iref" href="#rfc.xref.header.www-authenticate.2">4.1</a></li> |
|---|
| 916 | </ul> |
|---|
| 917 | </li> |
|---|
| 918 | </ul> |
|---|
| 919 | </li> |
|---|
| 920 | <li class="indline0"><a id="rfc.index.P" href="#rfc.index.P"><b>P</b></a><ul class="ind"> |
|---|
| 921 | <li class="indline1"><em>Part1</em> <a class="iref" href="#rfc.xref.Part1.1">1.2</a>, <a class="iref" href="#rfc.xref.Part1.2">1.2.1</a>, <a class="iref" href="#rfc.xref.Part1.3">1.2.1</a>, <a class="iref" href="#Part1"><b>7.1</b></a><ul class="ind"> |
|---|
| 922 | <li class="indline1"><em>Section 1.2</em> <a class="iref" href="#rfc.xref.Part1.1">1.2</a></li> |
|---|
| 923 | <li class="indline1"><em>Section 1.2.2</em> <a class="iref" href="#rfc.xref.Part1.2">1.2.1</a>, <a class="iref" href="#rfc.xref.Part1.3">1.2.1</a></li> |
|---|
| 924 | </ul> |
|---|
| 925 | </li> |
|---|
| 926 | <li class="indline1"><em>Part6</em> <a class="iref" href="#rfc.xref.Part6.1">3.1</a>, <a class="iref" href="#Part6"><b>7.1</b></a><ul class="ind"> |
|---|
| 927 | <li class="indline1"><em>Appendix </em> <a class="iref" href="#rfc.xref.Part6.1">3.1</a></li> |
|---|
| 928 | </ul> |
|---|
| 929 | </li> |
|---|
| 930 | <li class="indline1">Proxy-Authenticate header <a class="iref" href="#rfc.xref.header.proxy-authenticate.1">2.2</a>, <a class="iref" href="#rfc.iref.p.1"><b>3.2</b></a>, <a class="iref" href="#rfc.xref.header.proxy-authenticate.2">4.1</a></li> |
|---|
| 931 | <li class="indline1">Proxy-Authorization header <a class="iref" href="#rfc.xref.header.proxy-authorization.1">2.2</a>, <a class="iref" href="#rfc.iref.p.2"><b>3.3</b></a>, <a class="iref" href="#rfc.xref.header.proxy-authorization.2">4.1</a></li> |
|---|
| 932 | </ul> |
|---|
| 933 | </li> |
|---|
| 934 | <li class="indline0"><a id="rfc.index.R" href="#rfc.index.R"><b>R</b></a><ul class="ind"> |
|---|
| 935 | <li class="indline1"><em>RFC2119</em> <a class="iref" href="#rfc.xref.RFC2119.1">1.1</a>, <a class="iref" href="#RFC2119"><b>7.1</b></a></li> |
|---|
| 936 | <li class="indline1"><em>RFC2616</em> <a class="iref" href="#rfc.xref.RFC2616.1">1</a>, <a class="iref" href="#RFC2616"><b>7.2</b></a>, <a class="iref" href="#rfc.xref.RFC2616.2">C.1</a></li> |
|---|
| 937 | <li class="indline1"><em>RFC2617</em> <a class="iref" href="#rfc.xref.RFC2617.1">1</a>, <a class="iref" href="#rfc.xref.RFC2617.2">1</a>, <a class="iref" href="#rfc.xref.RFC2617.3">1.2.2</a>, <a class="iref" href="#rfc.xref.RFC2617.4">1.2.2</a>, <a class="iref" href="#rfc.xref.RFC2617.5">2.1</a>, <a class="iref" href="#rfc.xref.RFC2617.6">2.2</a>, <a class="iref" href="#rfc.xref.RFC2617.7">3.1</a>, <a class="iref" href="#rfc.xref.RFC2617.8">3.2</a>, <a class="iref" href="#rfc.xref.RFC2617.9">3.3</a>, <a class="iref" href="#rfc.xref.RFC2617.10">3.4</a>, <a class="iref" href="#RFC2617"><b>7.1</b></a><ul class="ind"> |
|---|
| 938 | <li class="indline1"><em>Section 1.2</em> <a class="iref" href="#rfc.xref.RFC2617.3">1.2.2</a>, <a class="iref" href="#rfc.xref.RFC2617.4">1.2.2</a></li> |
|---|
| 939 | </ul> |
|---|
| 940 | </li> |
|---|
| 941 | <li class="indline1"><em>RFC3864</em> <a class="iref" href="#rfc.xref.RFC3864.1">4.1</a>, <a class="iref" href="#RFC3864"><b>7.2</b></a></li> |
|---|
| 942 | <li class="indline1"><em>RFC5234</em> <a class="iref" href="#rfc.xref.RFC5234.1">1.2</a>, <a class="iref" href="#RFC5234"><b>7.1</b></a><ul class="ind"> |
|---|
| 943 | <li class="indline1"><em>Appendix B.1</em> <a class="iref" href="#rfc.xref.RFC5234.1">1.2</a></li> |
|---|
| 944 | </ul> |
|---|
| 945 | </li> |
|---|
| 946 | </ul> |
|---|
| 947 | </li> |
|---|
| 948 | <li class="indline0"><a id="rfc.index.S" href="#rfc.index.S"><b>S</b></a><ul class="ind"> |
|---|
| 949 | <li class="indline1">Status Codes |
|---|
| 950 | <ul class="ind"> |
|---|
| 951 | <li class="indline1">401 Unauthorized <a class="iref" href="#rfc.iref.s.1"><b>2.1</b></a></li> |
|---|
| 952 | <li class="indline1">407 Proxy Authentication Required <a class="iref" href="#rfc.iref.s.2"><b>2.2</b></a></li> |
|---|
| 953 | </ul> |
|---|
| 954 | </li> |
|---|
| 955 | </ul> |
|---|
| 956 | </li> |
|---|
| 957 | <li class="indline0"><a id="rfc.index.W" href="#rfc.index.W"><b>W</b></a><ul class="ind"> |
|---|
| 958 | <li class="indline1">WWW-Authenticate header <a class="iref" href="#rfc.xref.header.www-authenticate.1">2.1</a>, <a class="iref" href="#rfc.iref.w.1"><b>3.4</b></a>, <a class="iref" href="#rfc.xref.header.www-authenticate.2">4.1</a></li> |
|---|
| 959 | </ul> |
|---|
| 960 | </li> |
|---|
| 961 | </ul> |
|---|
| 962 | </div> |
|---|
| 963 | </body> |
|---|
| 964 | </html> |
|---|
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