K2 stream cipher

Shinsaku Kiyomoto, Toshiaki Tanaka, Kouichi Sakurai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


A variety of different clock-controlled stream ciphers and attacks on them have been described in a number of papers. However, few word-oriented algorithms with an irregular clocking mechanism have been proposed. This paper proposes a new design of irregular clocking for word-oriented stream ciphers that is dynamic feedback control and show analysis results of its security and performance. The stream cipher K2 v2.0 is a secure and high-performance stream cipher using the dynamic feedback control, which is applicable for several applications. We believe that the dynamic feedback control mechanism is potentially effective against several different types of attacks, not only existing attacks but also novel attacks.

Original languageEnglish
Title of host publicationE-business and Telecommunications - 4th International Conference, ICETE 2007, Revised Selected Papers
Number of pages13
Publication statusPublished - Dec 1 2008
Event4th International Conference on E-Business and Telecommunications, ICETE 2007 - Barcelona, Spain
Duration: Jul 28 2007Jul 31 2007

Publication series

NameCommunications in Computer and Information Science
Volume23 CCIS
ISSN (Print)1865-0929


Other4th International Conference on E-Business and Telecommunications, ICETE 2007

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Mathematics(all)


Dive into the research topics of 'K2 stream cipher'. Together they form a unique fingerprint.

Cite this