The 128-Bit Block Cipher Camellia

• AOKI Kazumaro

  NTT Communications Corporation

• ICHIKAWA Tetsuya

  Mitsubishi Electric Corporation

• KANDA Masayuki

  Nippon Telegraph and Telephone Corporation

• MATSUI Mitsuru

  Mitsubishi Electric Corporation

• MORIAI Shiho

  Nippon Telegraph and Telephone Corporation

• NAKAJIMA Junko

  Mitsubishi Electric Corporation

• TOKITA Toshio

  Mitsubishi Electric Corporation

Abstract

We present the new 128-bit block cipher called Camellia. Camellia supports 128-bit, block size and 128-, 192-, and 256-bit key lengths, i.e. the same interface specifications as the Advanced Encryption Standard(AES). Camellia was carefully designed to withstand all known cryptanalytic attacks and even to have a sufficiently large security leeway. It was also designed to suit both software and hardware implementations and to cover all possible encryption applications that range from lowcost smart cards to high-speed network systems. Compared to the AES finalists, Camellia offers at least comparable encryption speed in software and hardware. An optimized implementation of Camellia in assembly language can encrypt on a Pentium III(1.13GHz)at the rate of 471 Mbits per second. In addition, a distinguishing feature is its small hardware design. A hardware implementation, which includes encryption, decryption, and the key schedule for 128-bit keys, occupies only 9.66 K gates using a 0.35μm CMOS ASIC library. This is in the smallest class among all existing 128-bit block ciphers. It perfectly meets the current market requirements in wireless cards, for instance, where low power consumption is essential.

Journal

• IEICE Trans. Fundamentals, A

  IEICE Trans. Fundamentals, A 85 (1), 11-24, 2002-01-01

  The Institute of Electronics, Information and Communication Engineers

Keywords

• block cipher
• block cipher design
• cryptanalysis
• Camellia

Details

• CRID: 1570854177379233280
• NII Article ID: 110003209073
• NII Book ID: AA10826239
• ISSN: 09168508
• Text Lang: en
• Data Source:
  • CiNii Articles