Network Working Group S. Kanno
Internet-Draft NTT Software Corporation
Intended status: Informational M. Kanda
Expires: December 17, 2011 NTT
June 15, 2011
Addition of the Camellia Cipher Suites to Transport Layer Security (TLS)
draft-kanno-tls-camellia-03
Abstract
This document specifies forty-two cipher suites for the Transport
Security Layer (TLS) protocol to additionally support the Camellia
encryption algorithm as a block cipher.
Status of this Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. Proposed Cipher Suites . . . . . . . . . . . . . . . . . . . . 4
2.1. HMAC based Cipher Suites . . . . . . . . . . . . . . . . . 4
2.2. GCM based Cipher Suites . . . . . . . . . . . . . . . . . 4
2.3. PSK based Cipher Suites . . . . . . . . . . . . . . . . . 5
3. Cipher Suite Definitions . . . . . . . . . . . . . . . . . . . 6
3.1. Key Exchange . . . . . . . . . . . . . . . . . . . . . . . 6
3.2. Cipher . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3. PRFs . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4. PSK cipher suites . . . . . . . . . . . . . . . . . . . . 6
4. Security Considerations . . . . . . . . . . . . . . . . . . . 7
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.1. Normative References . . . . . . . . . . . . . . . . . . . 9
6.2. Informative References . . . . . . . . . . . . . . . . . . 10
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11
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1. Introduction
The Camellia cipher suites are already specified in RFC5932 [15] with
SHA-256 based HMAC using asymmetric key encryption. This document
proposes the addition of new cipher suites to the Transport Layer
Security (TLS) [8] protocol to support the Camellia [4] cipher
algorithm as a block cipher algorithm. The proposed cipher suites
include variants using SHA-2 family of cryptographic hash functions
[13] and Galois Counter Mode (GCM) [14]. Elliptic curve cipher
suites and Pre-Shared Key (PSK) [5] cipher suites are also included.
1.1. Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC2119 [3].
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2. Proposed Cipher Suites
2.1. HMAC based Cipher Suites
The eight cipher suites use Camellia [4] in Cipher Block Chaining
(CBC) [4] mode with a SHA-2 family HMAC using elliptic curves
cryptosystem:
CipherSuite TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
2.2. GCM based Cipher Suites
The twenty cipher suites use the same asymmetric key algorithms as
those in the previous section but use the authenticated encryption
modes defined in TLS 1.2 [8] with the Camellia in GCM [14].
CipherSuite TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DH_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DH_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DHE_DSS_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DHE_DSS_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DH_DSS_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DH_DSS_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DH_anon_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DH_anon_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
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2.3. PSK based Cipher Suites
The fourteen cipher suites describe PSK cipher suites. The first six
cipher suites use Camellia with GCM and the next eight cipher suites
use the Camellia with SHA-2 family HMAC using asymmetric key
encryption or elliptic curves cryptosystem.
CipherSuite TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
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3. Cipher Suite Definitions
3.1. Key Exchange
The RSA, DHE_RSA, DH_RSA, DHE_DSS, DH_DSS, ECDH, DH_anon, and ECDHE
key exchanges are performed as defined in RFC5246 [8].
3.2. Cipher
This document describes cipher suites based on Camellia cipher using
CBC mode and GCM. The details are follows;
The CAMELLIA_128_CBC cipher suites use Camellia [4] in CBC mode with
a 128-bit key and 128-bit Initialization Vector (IV); the
CAMELLIA_256_CBC cipher suites use a 256-bit key and 128-bit IV.
Advanced Encryption Standard (AES) [19] authenticated encryption with
additional data algorithms, AEAD_AES_128_GCM and AEAD_AES_256_GCM are
described in RFC5116 [7]. And AES GCM cipher suites for TLS are
described in RFC5288 [9]. AES and Camellia share common
characteristics including key sizes and block length.
CAMELLIA_128_GCM and CAMELLIA_256_GCM are defined according as those
of AES.
3.3. PRFs
The hash algorithms and PseudoRandom Function (PRF) algorithms for
TLS 1.2 [8] SHALL be as follows:
a) The cipher suites ending with _SHA256 use HMAC-SHA-256 [1] as the
MAC algorithm, The PRF is the TLS PRF [8] with SHA-256 [13] as the
hash function,
b) The cipher suites ending with _SHA384 use HMAC-SHA-384 [1] as the
MAC algorithm, The PRF is the TLS PRF [8] with SHA-384 [13] as the
hash function.
When used with TLS versions prior to 1.2 (TLS 1.0 [2] and TLS 1.1
[6]), the PRF is calculated as specified in the appropriate version
of the TLS specification.
3.4. PSK cipher suites
PSK cipher suites for TLS are described in RFC5487 [11] as to SHA-
256/384 and RFC5489 [12] as to ECDHE_PSK.
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4. Security Considerations
At the time of writing this document there are no known weak keys for
Camellia. And no security problem has been found on Camellia (see
NESSIE [16], CRYPTREC [17], and LNCS 5867[18]).
The security considerations in previous RFCs (RFC5116 [7], RFC5289
[10], and RFC5487 [11]) apply to this document as well.
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5. IANA Considerations
IANA is requested to allocate the following numbers in the TLS Cipher
Suite Registry:
CipherSuite TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DH_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DH_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DHE_DSS_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DHE_DSS_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DH_DSS_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DH_DSS_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DH_anon_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DH_anon_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256 = {TBD,TBD};
CipherSuite TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384 = {TBD,TBD};
CipherSuite TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
CipherSuite TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256 = {TBD,TBD};
CipherSuite TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384 = {TBD,TBD};
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6. References
6.1. Normative References
[1] Krawczyk, H., Bellare, M., and R. Canetti, "HMAC: Keyed-Hashing
for Message Authentication", RFC 2104, February 1997.
[2] Dierks, T. and C. Allen, "The TLS Protocol Version 1.0",
RFC 2246, January 1999.
[3] Bradner, S., "Key words for use in RFCs to Indicate Requirement
Levels", BCP 14, RFC 2119, March 1997.
[4] Matsui, M., Nakajima, J., and S. Moriai, "A Description of the
Camellia Encryption Algorithm", RFC 3713, April 2004.
[5] Eronen, P. and H. Tschofenig, "Pre-Shared Key Ciphersuites for
Transport Layer Security (TLS)", RFC 4279, December 2005.
[6] Dierks, T. and E. Rescorla, "The Transport Layer Security (TLS)
Protocol Version 1.1", RFC 4346, April 2006.
[7] McGrew, D., "An Interface and Algorithms for Authenticated
Encryption", RFC 5116, January 2008.
[8] Dierks, T. and E. Rescorla, "The Transport Layer Security (TLS)
Protocol Version 1.2", RFC 5246, August 2008.
[9] Salowey, J., Choudhury, A., and D. McGrew, "AES Galois Counter
Mode (GCM) Cipher Suites for TLS", RFC 5288, August 2008.
[10] Rescorla, E., "TLS Elliptic Curve Cipher Suites with SHA-256/
384 and AES Galois Counter Mode (GCM)", RFC 5289, August 2008.
[11] Badra, M., "Pre-Shared Key Cipher Suites for TLS with SHA-256/
384 and AES Galois Counter Mode", RFC 5487, March 2009.
[12] Badra, M. and I. Hajjeh, "ECDHE_PSK Cipher Suites for Transport
Layer Security (TLS)", RFC 5489, March 2009.
[13] National Institute of Standards and Technology, "Secure Hash
Standard (SHS)", FIPS PUB 180, October 2008, <http://
csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf>.
[14] Dworkin, M., "Recommendation for Block Cipher Modes of
Operation: Galois/Counter Mode (GCM) for Confidentiality and
Authentication", April 2006, <http://csrc.nist.gov/
publications/nistpubs/800-38D/SP-800-38D.pdf>.
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6.2. Informative References
[15] Kato, A., Kanda, M., and S. Kanno, "Camellia Cipher Suites for
TLS", RFC 5932, June 2010.
[16] "The NESSIE project (New European Schemes for Signatures,
Integrity and Encryption)",
<http://www.cosic.esat.kuleuven.ac.be/nessie/>.
[17] "CRYPTREC (Cryptography Research and Evaluation Committees)",
<http://www.cryptrec.go.jp/english/index.html>.
[18] Mala, H., Shakiba, M., and M. Dakhil-alian, "New Results on
Impossible Differential Cryptanalysis of Reduced Round
Camellia-128", November 2009,
<http://www.springerlink.com/content/e55783u422436g77/>.
[19] National Institute of Standards and Technology, "Advanced
Encryption Standard (AES)", FIPS PUB 197, November 2001,
<http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf>.
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Authors' Addresses
Satoru Kanno
NTT Software Corporation
Phone: +81-45-212-9803
Fax: +81-45-212-9800
Email: kanno.satoru@po.ntts.co.jp
Masayuki Kanda
NTT
Phone: +81-422-59-3456
Fax: +81-422-59-4015
Email: kanda.masayuki@lab.ntt.co.jp
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