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Hitachi

Hitachi Crypto Technology

News

22 Feb. 2010
3 Feb. 2010
  • The Enocoro site launched.

What is Enocoro?

Enocoro is a family of pseudorandom number generators (stream ciphers) developed by Hitachi, Ltd. In this site, we mainly provide the technical information on Enocoro-128v2, which we submitted to CRYPTREC in 2010.

Submission Documents

CRYPTREC has started accepting applications of ``cryptographic techniques towards the revision of the e-Government Ciphers List'' in February 2009. The following list of the documents is the technical part of the submission package of Enocoro.

Supplemental Information

Here is a list of reports on security or implementation perspective of the Enocoro family which includes not only Enocoro-128v2 but also Enocoro-80, Enocoro-128v1, and Enocoro-128v1.1. The list will be updated when new reports are available.

Security Analyses

  • 2007
    • D.Watanabe and T.Kaneko, ``A construction of light weight Panama-like keystream generator,'' IEICE Technical Report, ISEC2007-78, 2007 (in Japanese).
    • K.Muto, D.Watanabe, and T.Kaneko, ``A Study on Strength of Pseudorandom Number Generator Enocoro-80 against Linear Distinguish Attack,'' SITA2007, 2007 (in Japanese).
  • 2008
    • H. Furuichi, K. Muto, D. Watanabe, and T. Kaneko, ``Security evaluation of Enocoro-80 against differential resynchronization attack,'' The 2008 Symposium on Cryptography and Information Security, SCIS2008, 4A1-3, January 2008 (in Japanese).
    • K.Ideguchi and D.Watanabe, ``A Method of Security Evaluation of Guess and Determine Attacks,'' The 2008 Symposium on Cryptography and Information Security, SCIS2008, 3A1-4, January 2008 (in Japanese).
    • K.Muto, D.Watanabe, and T.Kaneko, ``Strength evaluation of Enocoro-128 against LDA and its Improvement,'' The 2008 Symposium on Cryptography and Information Security, SCIS2008, 4A1-1, January 2008 (in Japanese).
    • K.Muto, D.Watanabe, and T.Kaneko, ``Security evaluation of Enocoro-80 against linear resynchronization attack,'' The 2008 Symposium on Cryptography and Information Security, SCIS2008, 4A1-2, January 2008 (in Japanese).
    • D. Watanabe, K. Ideguchi, J. Kitahara, K. Muto, H. Furuichi, T. Kaneko, ``Enocoro-80: A Hardware Oriented Stream Cipher,'' Second International Workshop on Advances in Information Security, 2008.
    • K.Konosu, K.Muto, H.Furuichi, D.Watanabe and T.Kaneko, ``Security evaluation of Enocoro-128~ver.1.1 against resynchronization attack,'' IEICE Technical Report, ISEC2007-147, 2008 (in Japanese).
  • 2009
    • K.Okamoto, K.Muto, and T.Kaneko, ``Security evaluation of Pseudorandom Number Generator Enocoro-80 against Differential/Linear Cryptanalysis (II),'' The 2009 Symposium on Cryptography and Information Security, SCIS2009, 4B2-3, 2009 (in Japanese).
  • 2010
    • D.Watanabe, K.Okamoto, T.Kaneko, ``A Hardware-Oriented Light Weight Pseudo-Random Number Generator Enocoro-128v2,'' The 2010 Symposium on Cryptography and Information Security, SCIS2010, 3D1-3, 2010 (in Japanese).
    • D.Watanabe, T.Owada, K.Okamoto, Y.Igarashi and T.Kaneko, ``Update on Enocoro Stream Cipher,'' 2010 International Symposium on Information Theory and its Applications, ISITA 2010.

Software Implementations

None.

Hardware Implementations

  • J.Kitahara and D.Watanabe, ``An electrical power evaluation of stream cipher Enocoro which is implemented in hardware,'' The 2008 Symposium on Cryptography and Information Security, SCIS2008, 2C2-3, January 2008 (in Japanese).