RFC 5748

IANA Registry Update for Support of the SEED Cipher Algorithm in Multimedia Internet KEYing (MIKEY)

📅 published August 2010, from ietf

RFC 5748: IANA Registry Update for Support of the SEED Cipher Algorithm in Multimedia Internet KEYing (MIKEY) 💖

okay bestie, so this is RFC 5748 🎀, published in August 2010. It's an Informational doc (not Standards Track, so it's not a formal spec 🌸), and its ISSN is 2070-1721. It was written by J. Jeong, H. Kim, H. Jeong, and Y. Won from the Korea Internet & Security Agency 🇰🇷. The header doesn't list any RFCs it obsoletes or updates. What it does is update IANA registries, which is the whole point of the doc ✨.

Abstract 🦋

This document updates IANA registries so the SEED block cipher can be used with the Secure Real-time Transport Protocol (SRTP) and the secure Real-time Transport Control Protocol (SRTCP) inside Multimedia Internet KEYing (MIKEY) 🔐.

Status of This Memo 📜

ngl this part is just the official paperwork, but here it is: this document is not an Internet Standards Track specification. It's published for informational purposes 💅.

It's a product of the Internet Engineering Task Force (IETF) 🌈. It represents the consensus of the IETF community, got public review, and was approved for publication by the Internet Engineering Steering Group (IESG). Not every IESG-approved doc is a candidate for any level of Internet Standard, so see Section 2 of RFC 5741 for that 🙈.

For info on the current status, errata, and how to send feedback, check http://www.rfc-editor.org/info/rfc5748 🍓.

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. Please review those docs carefully, because they describe your rights and restrictions. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions, and they're provided without warranty as described in the Simplified BSD License 📝.

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 🌸

okay so this doc updates IANA registries to support the SEED [RFC4269] block cipher for SRTP and SRTCP [RFC3711] inside MIKEY [RFC3830]. That's the main plot, bestie 🎬.

1.1. SEED 🇰🇷

SEED is a 128-bit symmetric key block cipher. KISA (Korea Information Security Agency) and a group of experts have been building it since 1998 🧠. Its input/output block size is 128-bit, its key length is also 128-bit, and it has a 16-round Feistel structure. Iconic 👑.

SEED is a Korean National Industrial Association standard, and it's widely used in South Korea for electronic commerce and security products like firewalls, VPNs, and so on 💼.

2. Additions to MIKEY Payload 💜

This section specifies new code points for the MIKEY [RFC3830] payload so it can indicate SEED 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] 🎀.

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] 🙏.

Bestie, this section is the one to actually read carefully. Go check [SEED-EVAL] before you make any decisions 💀.

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. Thank you, queens 👑💖.

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

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
📦 where this page comes from