Internet Engineering Task Force (IETF) A. Kato Request for Comments: 5932 NTT Software Corporation Obsoletes: 4132 M. Kanda Category: Standards Track NTT ISSN: 2070-1721 S. Kanno NTT Software Corporation June 2010
Camellia Cipher Suites for TLS
This document specifies a set of cipher suites for the Transport Security Layer (TLS) protocol to support the Camellia encryption algorithm as a block cipher. It amends the cipher suites originally specified in RFC 4132 by introducing counterparts using the newer cryptographic hash algorithms from the SHA-2 family. This document obsoletes RFC 4132.
Status of This Memo
This is an Internet Standards Track document.
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Kato, et al. Standards Track [Page 1]
RFC 5932 Camellia Cipher Suites for TLS June 2010
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This document proposes the addition of new cipher suites to the Transport Layer Security (TLS) [RFC5246] protocol to support the Camellia [RFC3713] encryption algorithm as a block cipher algorithm, adding variants using the SHA-2 family of cryptographic hash algorithms [FIPS180-3] to the TLS cipher suite portfolio originally specified in RFC 4132 [RFC4132]. This document obsoletes RFC 4132.
The Camellia algorithm and its properties are described in [RFC3713].
The cipher suites ending with _SHA256 use HMAC-SHA-256 as the MAC algorithm. The PRF is the TLS PRF [RFC5246] with SHA-256 as the hash function. These cipher suites MUST NOT be negotiated by TLS 1.1 or earlier versions. Clients MUST NOT offer these cipher suites if they do not offer TLS 1.2 or later. Servers that select an earlier version of TLS MUST NOT select one of these cipher suites.