terms of AUTH_SESSION size. The AUTH_SESSION only needs to contain
the principal@realm name of the authorizing entity. This is much
more efficient than the PKI authentication option.
PKI authentication option provides a high level of security and good
scalability, however it requires the presence of credentials in the
AUTH_SESSION policy element which impacts its size.
10. Acknowledgments
We would like to thank Francois Audet, Don Wade, Hamid Syed, Kwok Ho
Chan and many others for their valuable comments. Special thanks to
Eric Rescorla who provided numerous comments and suggestions that
improved this document.
In addition, we would like to thank S. Yadav, et al., for their
efforts on RFC3182, as this document borrows from their work.
11. Normative References
[ASCII] Coded Character Set -- 7-Bit American Standard
Code for Information Interchange, ANSI X3.4-
1986.
[X.509-ITU] ITU-T (formerly CCITT) Information technology
Open Systems Interconnection - The Directory:
Authentication Framework Recommendation X.509
ISO/IEC 9594-8
[RFC-1034] Mockapetris, P., "Domain names - concepts and
facilities", STD 13, RFC1034, November 1987.
[RFC-1305] Mills, D., "Network Time Protocol (Version 3)
Specification, Implementation, and Analysis",
RFC1305, March 1992.
[RFC-1321] Rivest, R., "The MD5 Message-Digest Algorithm",
RFC1321, April 1992.
[RFC-1510] Kohl, J. and C. Neuman, "The Kerberos Network
Authentication Service (V5)", RFC1510,
September 1993.
[RFC-2104] Krawczyk, H., Bellare, M. and R. Canetti,
"HMAC: Keyed-Hashing for Message
Authentication", RFC2104, February 1997.
[RFC-2119] Bradner, S., "Key words for use in RFCs to
Indicate Requirement Levels", BCP 14, RFC2119,
March 1997.
[RFC-2205] Braden, R., Ed., Zhang, L., Berson, S., Herzog,
S. and S. Jamin, "Resource ReSerVation Protocol
(RSVP) - Version 1 Functional Specification",
RFC2205, September 1997.
[RFC-2209] Braden, R. and L. Zhang, "Resource ReSerVation
Protocol (RSVP) - Version 1 Message Processing
Rules", RFC2209, September 1997.
[RFC-2253] Wahl, M., Kille, S. and T. Howes , "UTF-8
String Representation of Distinguished Names",
RFC2253, December 1997.
[RFC-2279] Yergeau, F., "UTF-8, a transformation format of
ISO 10646", RFC2279, January 1998.
[RFC-2327] Handley, M. and V. Jacobson, "SDP: Session
Description Protocol", RFC2327, October 1998.
[RFC-2396] Berners-Lee, T., Fielding, R., Masinter, L.,
"Uniform Resource Identifiers (URI): Generic
Syntax", RFC2396, August 1998.
[RFC-2440] Callas, J., Donnerhacke, L., Finney, H. and R.
Thayer, "OpenPGP Message Format", RFC2440,
November 1998.
[RFC-2474] Nichols, K., Blake, S., Baker, F. and D. Black,
"Definition of the Differentiated Services
Field (DS Field) in the IPv4 and IPv6 Headers",
RFC2474, December 1998.
[RFC-2750] Herzog, S., "RSVP Extensions for Policy
Control", RFC2750, January 2000.
[RFC-2753] Yavatkar, R., Pendarakis, D. and R. Guerin, "A
Framework for Policy-based Admission Control
RSVP", RFC2753, January 2000.
[RFC-3182] Yadav, S., Yavatkar, R., Pabbati, R., Ford, P.,
Moore, T., Herzog, S. and R. Hess, "Identity
Representation for RSVP", RFC3182, October
2001
[RFC-3280] Housley, R., Polk, W., Ford, W. and D. Solo,
"Internet X.509 Public Key Infrastructure
Certificate and Certificate Revocation List
(CRL) Profile", RFC3280, April 2002.
[RFC-3369] Housley, R., "Cryptographic Message Syntax",
RFC3369, August 2002.
[RFC-3447] Jonsson, J. and B. Kaliski, "Public-Key
Cryptography Standards (PKCS) #1: RSA
Cryptography Specifications Version 2.1", RFC
3447, February 2003.
[RFC-3521] Hamer, L.-N., Gage, B. and H. Shieh, "Framework
for Session Setup with Media Authorization",
RFC3521, April 2003.
12. Informative References
[IANA-CONSIDERATIONS] Alvestrand, H. and T. Narten, "Guidelines for
Writing an IANA Considerations Section in
RFCs", BCP 26, RFC2434, October 1998.
[RFC-3261] Rosenberg, J., Schulzrinne, H., Camarillo, G.,
Johnston, A., Peterson, J., Sparks, R.,
Handley, M. and E. Schooler, "SIP: Session
Initiation Protocol", RFC3261, June 2002.
13. Intellectual Property Statement
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pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
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14. Contributors
Matt Broda
Nortel Networks
EMail: mbroda@nortelnetworks.com
Louis LeVay
Nortel Networks
EMail: levay@nortelnetworks.com
Dennis Beard
Nortel Networks
EMail: beardd@nortelnetworks.com
Lawrence Dobranski
Nortel Networks
EMail: ldobran@nortelnetworks.com
15. Authors' Addresses
Louis-Nicolas Hamer
Nortel Networks
PO Box 3511 Station C
Ottawa, Ontario
Canada K1Y 4H7
Phone: +1 613.768.3409
EMail: nhamer@nortelnetworks.com
Brett Kosinski
Invidi Technologies
Edmonton, Alberta
Canada T5J 3S4
EMail: brettk@invidi.com
Bill Gage
Nortel Networks
PO Box 3511 Station C
Ottawa, Ontario
Canada K1Y 4H7
Phone: +1 613.763.4400
EMail: gageb@nortelnetworks.com
Hugh Shieh
AT&T Wireless
7277 164th Avenue NE
Redmond, WA
USA 98073-9761
Phone: +1 425.580.6898
EMail: hugh.shieh@attws.com
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