CLEFIA The 128-bit Blockcipher

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Several technical documents of CLEFIA are available in this page.

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DOWNLOADING OR USING THE DOCUMENTS, PROGRAMS AND ANY OTHER INFORMATION WITH REGARD TO "CLEFIA", A HIGHLY SECURE AND EFFICIENT BLOCK CIPHER ALGORITHM DISCLOSED AND PROVIDED BY SONY CORPORATION IN THIS WEBSITE ("CLEFIA INFORMATION") INDICATES YOUR ACCEPTANCE OF THIS NOTICE. IF YOU DO NOT AGREE WITH THIS NOTICE, YOU SHOULD NOT DOWNLOAD OR USE CLEFIA INFORMATION.

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  • Specification v1.0
  • Design Rationale v1.0
  • Security and Performance Evaluation v1.0
  • Reference Code v1.0.1
  • Slides presented at ISEC (May 18, 2007)
    ISEC2007-1 "The 128-Bit Blockcipher CLEFIA (in Japanese)." (Slides)
  • Slides presented at ISEC (July 20, 2007)
    ISEC2007-49 "Hardware Implementations of the 128-bit Blockcipher CLEFIA (in Japanese)." (Slides)
  • The Submission Package to CRYPTREC (Application for Cryptographic Techniques towards the Revision of the e-Government Recommended Ciphers List)
    Application Form (Japanese/English),
    Specification (Japanese/English),
    Self Evaluations Report (Japanese/English), Test Vectors,
    Reference Code, Reference Code Specifications (Japanese/English),
    Reference HDL Code, Reference HDL Code Specifications (Japanese/English),
    Test Vector Generator, Test Vector Generator Specifications (Japanese/English),
    Information on Publication Status (Japanese),
    Presentation for the CRYPTREC Symposium (Japanese/English)
  • Reports and Slides presented at the 2011 Symposium on Cryptography and Information Security(SCIS 2011)
    2B1-2 "Update of the Security Evaluation of CLEFIA against Differential Attack and Linear Attack", (Report, Slides) - Japanese
    3D1-1 "Compact Hardware Implementation of the 128-bit Blockcipher CLEFIA",
    (Report, Slides) - Japanese
  • Technical paper "Very Compact Hardware Implementations of the Blockcipher CLEFIA"

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Japanese CLEFIA