RFC 3713 (rfc3713) - Page 1 of 15

A Description of the Camellia Encryption Algorithm

Network Working Group                                          M. Matsui
Request for Comments: 3713                                   J. Nakajima
Category: Informational                  Mitsubishi Electric Corporation
                                                               S. Moriai
                                        Sony Computer Entertainment Inc.
                                                              April 2004


           A Description of the Camellia Encryption Algorithm

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).  All Rights Reserved.

Abstract

   This document describes the Camellia encryption algorithm.  Camellia
   is a block cipher with 128-bit block size and 128-, 192-, and 256-bit
   keys.  The algorithm description is presented together with key
   scheduling part and data randomizing part.

1.  Introduction

1.1.  Camellia

   Camellia was jointly developed by Nippon Telegraph and Telephone
   Corporation and Mitsubishi Electric Corporation in 2000
   [CamelliaSpec].  Camellia specifies the 128-bit block size and 128-,
   192-, and 256-bit key sizes, the same interface as the Advanced
   Encryption Standard (AES).  Camellia is characterized by its
   suitability for both software and hardware implementations as well as
   its high level of security.  From a practical viewpoint, it is
   designed to enable flexibility in software and hardware
   implementations on 32-bit processors widely used over the Internet
   and many applications, 8-bit processors used in smart cards,
   cryptographic hardware, embedded systems, and so on [CamelliaTech].
   Moreover, its key setup time is excellent, and its key agility is
   superior to that of AES.







Matsui, et al.               Informational