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+Internet Engineering Task Force (IETF) J. Jeong
+Request for Comments: 5748 H. Kim
+Category: Informational H. Jeong
+ISSN: 2070-1721 Y. Won
+ Korea Internet & Security Agency
+ August 2010
+
+
+ IANA Registry Update for Support of the SEED Cipher Algorithm in
+ Multimedia Internet KEYing (MIKEY)
+
+Abstract
+
+ This document updates IANA registries to support the SEED block
+ cipher algorithm for the Secure Real-time Transport Protocol (SRTP)
+ and the secure Real-time Transport Control Protocol (SRTCP) in
+ Multimedia Internet KEYing (MIKEY).
+
+Status of This Memo
+
+ This document is not an Internet Standards Track specification; it is
+ published for informational purposes.
+
+ 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). Not all documents
+ approved by the IESG are a candidate for any level of Internet
+ Standard; see 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/rfc5748.
+
+Copyright Notice
+
+ Copyright (c) 2010 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
+ Provisions Relating to IETF Documents
+ (http://trustee.ietf.org/license-info) in effect on the date of
+ publication of this document. Please review these documents
+ carefully, as they describe your rights and restrictions with respect
+ to this document. Code Components extracted from this document must
+ include Simplified BSD License text as described in Section 4.e of
+ the Trust Legal Provisions and are provided without warranty as
+ described in the Simplified BSD License.
+
+
+
+Jeong, et al. Informational [Page 1]
+
+RFC 5748 MIKEY_SEED August 2010
+
+
+Table of Contents
+
+ 1. Introduction ....................................................2
+ 1.1. SEED .......................................................2
+ 2. Additions to MIKEY Payload ......................................2
+ 2.1. Modified Table 6.10.1.b from RFC 3830 ......................3
+ 2.2. Modified Table 6.10.1.d from RFC 3830 ......................3
+ 3. Security Considerations .........................................3
+ 4. IANA Considerations .............................................3
+ 5. Acknowledgements ................................................3
+ 6. References ......................................................4
+ 6.1. Normative References .......................................4
+ 6.2. Informative References .....................................4
+
+1. Introduction
+
+ This document updates IANA registries to support the SEED [RFC4269]
+ block cipher algorithm for the Secure Real-time Transport Protocol
+ (SRTP) and the Secure Real-time Transport Control Protocol (SRTCP)
+ [RFC3711] in Multimedia Internet KEYing (MIKEY) [RFC3830].
+
+1.1. SEED
+
+ SEED is a 128-bit symmetric key block cipher that has been developed
+ by KISA (Korea Information Security Agency) and a group of experts
+ since 1998. The input/output block size of SEED is 128-bit, and the
+ key length is also 128-bit. SEED has a 16-round Feistel structure.
+
+ SEED is a Korean National Industrial Association standard and is
+ widely used in South Korea for electronic commerce and various
+ security products such as firewalls, VPNs, and so on.
+
+2. Additions to MIKEY Payload
+
+ This section specifies new code points for the MIKEY [RFC3830]
+ payload to indicate the use of the SEED cipher algorithm for SRTP and
+ SRTCP. There are three applicable modes of running SEED: SEED in
+ Counter Mode (SEED-CTR), SEED in Counter with CBC-MAC Mode (SEED-
+ CCM), and SEED in Galois/Counter Mode (SEED-GCM) Mode. These are
+ defined in [RFC5669].
+
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+Jeong, et al. Informational [Page 2]
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+RFC 5748 MIKEY_SEED August 2010
+
+
+2.1. Modified Table 6.10.1.b from RFC 3830
+
+ IANA has amended the sub-registry derived from Table 6.10.1.b of
+ [RFC3830] as follows:
+
+ SRTP encr alg | Value
+ ---------------------
+ NULL | 0
+ AES-CM | 1
+ AES-F8 | 2
+ SEED-CTR | 3 (NEW)
+ SEED-CCM | 4 (NEW)
+ SEED-GCM | 5 (NEW)
+
+ Figure 1: Table 6.10.1.b from [RFC3830] (Revised)
+
+2.2. Modified Table 6.10.1.d from RFC 3830
+
+ IANA has amended the sub-registry derived from Table 6.10.1.d of
+ [RFC3830] as follows:
+
+ SRTP PRF | Value
+ ---------------------
+ AES-CM | 0
+ SEED-CTR | 1 (NEW)
+
+ Figure 2: Table 6.10.1.d from [RFC3830] (Revised)
+
+3. Security Considerations
+
+ No security problem has been found on SEED. SEED is secure against
+ all known attacks including differential cryptanalysis, linear
+ cryptanalysis, and related key attacks. The only known attack is an
+ exhaustive search for the key. For further security considerations,
+ the reader is encouraged to read [SEED-EVAL].
+
+4. IANA Considerations
+
+ IANA has amended the indicated sub-registries in Section 2 of the
+ MIKEY [RFC3830] Payload Name registry according to Sections 2.1 and
+ 2.2 above.
+
+5. Acknowledgements
+
+ The authors would like to thank David McGrew, Spencer Dawkins,
+ SangHwan Park, Brian Weis, and Tim Polk for their reviews and
+ support.
+
+
+
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+Jeong, et al. Informational [Page 3]
+
+RFC 5748 MIKEY_SEED August 2010
+
+
+6. References
+
+6.1. Normative References
+
+ [RFC3711] Baugher, M., McGrew, D., Naslund, M., Carrara, E., and K.
+ Norrman, "The Secure Real-time Transport Protocol
+ (SRTP)", RFC 3711, March 2004.
+
+ [RFC3830] Arkko, J., Carrara, E., Lindholm, F., Naslund, M., and K.
+ Norrman, "MIKEY: Multimedia Internet KEYing", RFC 3830,
+ August 2004.
+
+ [RFC4269] Lee, H., Lee, S., Yoon, J., Cheon, D., and J. Lee, "The
+ SEED Encryption Algorithm", RFC 4269, December 2005.
+
+ [RFC5669] Yoon, S., Kim, J., Park, H., Jeong, H., and Y. Won, "The
+ SEED Cipher Algorithm and Its Use with the Secure Real-
+ Time Transport Protocol (SRTP)", RFC 5669, August 2010.
+
+6.2. Informative References
+
+ [SEED-EVAL] KISA, "Self Evaluation Report",
+ http://seed.kisa.or.kr/eng/main.jsp
+
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+RFC 5748 MIKEY_SEED August 2010
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+Authors' Addresses
+
+ Seokung Yoon
+ Korea Internet & Security Agency
+ IT Venture Tower, Jungdaero 135, Songpa-gu
+ Seoul, Korea 138-950
+ EMail: seokung@kisa.or.kr
+
+ Jongil Jeong
+ Korea Internet & Security Agency
+ IT Venture Tower, Jungdaero 135, Songpa-gu
+ Seoul, Korea 138-950
+ EMail: jijeong@kisa.or.kr
+
+ Hwankuk Kim
+ Korea Internet & Security Agency
+ IT Venture Tower, Jungdaero 135, Songpa-gu
+ Seoul, Korea 138-950
+ EMail: rinyfeel@kisa.or.kr
+
+ Hyuncheol Jeong
+ Korea Internet & Security Agency
+ IT Venture Tower, Jungdaero 135, Songpa-gu
+ Seoul, Korea 138-950
+ EMail: hcjung@kisa.or.kr
+
+ Yoojae Won
+ Korea Internet & Security Agency
+ IT Venture Tower, Jungdaero 135, Songpa-gu
+ Seoul, Korea 138-950
+ EMail: yjwon@kisa.or.kr
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