MSEC Working Group S. Yoon Internet Draft J. Jeong Intended Status: Informational H. Kim Expires: May 23, 2010 H. Jeong Y. Won Korea Internet & Security Agency November 23, 2009 IANA Registry Update for Support of the SEED Cipher Algorithm in the Multimedia Internet KEYing (MIKEY) draft-seokung-msec-mikey-seed-05 Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on May 23, 2010. Copyright Notice Copyright (c) 2009 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 in effect on the date of publication of this document (http://trustee.ietf.org/license-info). Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Yoon, et al. Expires May 23, 2010 [Page 1] Internet-Draft MIKEY-SEED November 23, 2009 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). Table of Contents 1. Introduction..................................................3 1.1. SEED.....................................................3 2. Additions to MIKEY payload....................................3 2.1. Modified Table 6.10.1.b from RFC3830.....................3 2.2. Modified Table 6.10.1.d from RFC3830.....................4 3. Security Considerations.......................................4 4. IANA Considerations...........................................4 5. Acknowledgements..............................................4 6. References....................................................5 6.1. Normative References.....................................5 6.2. Informative References...................................5 Author's Addresses...............................................6 Yoon, et al. Expires May 23, 2010 [Page 2] Internet-Draft MIKEY-SEED November 23, 2009 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 firewall, VPN, 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 [I-D.ietf-avt-seed-srtp]. 2.1. Modified Table 6.10.1.b from RFC3830 IANA is asked to amend 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) Yoon, et al. Expires May 23, 2010 [Page 3] Internet-Draft MIKEY-SEED November 23, 2009 2.2. Modified Table 6.10.1.d from RFC3830 IANA is asked to amend 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 With the adoption of this document for publication IANA has amended the indicated sub-registries in Section 2 of the MIKEY [RFC3830] Payload Name registry according to Section 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. Yoon, et al. Expires May 23, 2010 [Page 4] Internet-Draft MIKEY-SEED November 23, 2009 6. References 6.1. Normative References [I-D.ietf-avt-seed-srtp] S. Yoon, J. Kim, H. Park, H. Jeong, Y. Won, "The SEED Cipher Algorithm and Its Use with the Secure Real-time Transport Protocol (SRTP)", draft-ietf-avt-seed-srtp-14 (work in progress), June 2009. [RFC3711] M. Baugher, D. McGrew, M. Naslund, E.Carrara, 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] H. Lee, S. Lee, J. Yoon, D. Cheon, J. Lee, "The SEED Encryption Algorithm", RFC 4269, December 2005. 6.2. Informative References [SEED-EVAL] KISA, "Self Evaluation Report", http://www.kisa.or.kr/kisa/seed/down/SEED_Evaluation_Repo rt_by_CRYPTREC.pdf Yoon, et al. Expires May 23, 2010 [Page 5] Internet-Draft MIKEY-SEED November 23, 2009 Author's 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 Yoon, et al. Expires May 23, 2010 [Page 6]