Network Working Group H.J. Lee Request for Comments: 4162 J.H. Yoon Category: Standards Track J.I. Lee KISA August 2005 Addition of SEED Cipher Suites to Transport Layer Security (TLS) Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2005).
AbstractThis document proposes the addition of new cipher suites to the Transport Layer Security (TLS) protocol to support the SEED encryption algorithm as a bulk cipher algorithm. TLS] to support the SEED encryption algorithm as a bulk cipher algorithm.
SEED is easily implemented in various software and hardware because it is designed to increase the efficiency of memory storage and the simplicity of generating keys without degrading the security of the algorithm. In particular, it can be effectively adopted in a computing environment that has a restricted resources such as mobile devices, smart cards, and so on. SEED is a national industrial association standard [TTASSEED] and is widely used in South Korea for electronic commerce and financial services operated on wired & wireless PKI. The algorithm specification and object identifiers are described in [SEED-ALG]. The SEED homepage, http://www.kisa.or.kr/seed/seed_eng.html, contains a wealth of information about SEED, including detailed specification, evaluation report, test vectors, and so on. RFC2119]. SHA-1] in an HMAC construction as described in section 5 of [TLS].
sections 7.4.2 and 7.4.3 of [TLS]. ISOSEED] [CRYPTREC]. SEED has been submitted to several other standardization bodies such as ISO (ISO/IEC 18033-3) and IETF S/MIME Mail Security [SEED-SMIME]; and it is under consideration. For further security considerations, the reader is encouraged to read [SEED-EVAL]. For other security considerations, please refer to the security of the corresponding older cipher suites described in [TLS] and [AES-TLS].
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [TLS] Dierks, T. and C. Allen, "The TLS Protocol Version 1.0", RFC 2246, January 1999. [TTASSEED] Telecommunications Technology Association (TTA), South Korea, "128-bit Symmetric Block Cipher (SEED)", TTAS.KO-12.0004, September 1998, (In Korean) http://www.tta.or.kr/English/new/main/index.htm. [AES-TLS] Chown, P., "Advanced Encryption Standard (AES) Ciphersuites for Transport Layer Security (TLS)", RFC 3268, June 2002. [CRYPTREC] Information-technology Promotion Agency (IPA), Japan, CRYPTREC. "SEED Evaluation Report", February 2002, http://www.kisa.or.kr/seed/seed_eng.html. [ISOSEED] ISO/IEC JTC 1/SC 27, "National Body contributions on NP 18033 'Encryption Algorithms' in Response to SC 27 N2563 (ATT.3 Korea Contribution)", ISO/IEC JTC 1/SC 27 N2656r1 (n2656_3.zip), October 2000. [SEED-EVAL] KISA, "Self Evaluation Report", http://www.kisa.or.kr/seed/seed_eng.html. [SEED-ALG] Park, J., Lee, S., Kim, J., and J. Lee, "The SEED Encryption Algorithm", RFC 4009, February 2005. [SEED-SMIME] Park, J., Lee, S., Kim, J., and J. Lee, "Use of the SEED Encryption Algorithm in Cryptographic Message Syntax (CMS)", RFC 4010, February 2005. [SHA-1] FIPS PUB 180-1, "Secure Hash Standard", National Institute of Standards and Technology, U.S. Department of Commerce, April 17, 1995.
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