draft-ietf-sipcore-digest-scheme-06.txt   draft-ietf-sipcore-digest-scheme-07.txt 
SIP Core R. Shekh-Yusef SIP Core R. Shekh-Yusef
Internet-Draft Avaya Internet-Draft Avaya
Updates: 3261 (if approved) July 2, 2019 Updates: 3261 (if approved) July 3, 2019
Intended status: Standards Track Intended status: Standards Track
Expires: January 3, 2020 Expires: January 4, 2020
The Session Initiation Protocol (SIP) Digest Authentication Scheme The Session Initiation Protocol (SIP) Digest Authentication Scheme
draft-ietf-sipcore-digest-scheme-06 draft-ietf-sipcore-digest-scheme-07
Abstract Abstract
This document updates [RFC3261] by updating the Digest Access This document updates [RFC3261] by updating the Digest Access
Authentication scheme used by the Session Initiation Protocol (SIP) Authentication scheme used by the Session Initiation Protocol (SIP)
to add support for more secure digest algorithms, e.g. SHA-256 and to add support for more secure digest algorithms, e.g. SHA-256 and
SHA-512-256, to replace the broken MD5 algorithm, which might be used SHA-512-256, to replace the broken MD5 algorithm, which might be used
for backward compatibility reasons only. for backward compatibility reasons only.
Status of This Memo Status of This Memo
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on January 3, 2020. This Internet-Draft will expire on January 4, 2020.
Copyright Notice Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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response it MUST maintain the order of these header fields. The response it MUST maintain the order of these header fields. The
ordering of the header field values from the various proxies is not ordering of the header field values from the various proxies is not
significant. significant.
2.6. HTTP Digest Authentication Scheme Modifications 2.6. HTTP Digest Authentication Scheme Modifications
This section describes the modifications and clarifications required This section describes the modifications and clarifications required
to apply the HTTP Digest authentication scheme to SIP. The SIP to apply the HTTP Digest authentication scheme to SIP. The SIP
scheme usage is similar to that for HTTP. For completeness, the scheme usage is similar to that for HTTP. For completeness, the
bullets specified below are mostly copied from section 22.4 of bullets specified below are mostly copied from section 22.4 of
[RFC3261]; the only semantic changes are specified in bullets 7 and 8 [RFC3261]; the only semantic changes are specified in bullets 1, 7,
below. and 8 below.
SIP clients and servers MUST NOT accept or request Basic SIP clients and servers MUST NOT accept or request Basic
authentication. authentication.
The rules for Digest authentication follow those defined in HTTP, The rules for Digest authentication follow those defined in HTTP,
with "HTTP/1.1" [RFC7616] replaced by "SIP/2.0" in addition to the with "HTTP/1.1" [RFC7616] replaced by "SIP/2.0" in addition to the
following differences: following differences:
1. The URI included in the challenge has the following BNF: 1. The URI included in the challenge has the following BNF:
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in the future. This document specifies that algorithms defined in in the future. This document specifies that algorithms defined in
that registry may be used in SIP digest authentication. that registry may be used in SIP digest authentication.
This document has no actions for IANA. This document has no actions for IANA.
5. Acknowledgments 5. Acknowledgments
The author would like to thank the following individuals for their The author would like to thank the following individuals for their
careful reviews, comments, and suggestions: Paul Kyzivat, Olle careful reviews, comments, and suggestions: Paul Kyzivat, Olle
Johansson, Dale Worley, Michael Procter, Inaki Baz Castillo, Tolga Johansson, Dale Worley, Michael Procter, Inaki Baz Castillo, Tolga
Asveren, Christer Holmberg, and Brian Rosen. Asveren, Christer Holmberg, Brian Rosen, and Jean Mahoney.
6. References 6. References
6.1. Normative References 6.1. Normative References
[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.
[RFC3261] Rosenberg, J., Schulzrinne, H., Camarillo, H., Johnston, [RFC3261] Rosenberg, J., Schulzrinne, H., Camarillo, H., Johnston,
A., Peterson, J., Sparks, R., Handley, M., and E. A., Peterson, J., Sparks, R., Handley, M., and E.
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