Nonlinear Theory and Its Applications, IEICE
Online ISSN : 2185-4106
Special Section on Communication Sciences and Engineering
Further improving security of Vector Stream Cipher
Atsushi IwasakiKen Umeno
Author information
JOURNALS FREE ACCESS

Volume 8 (2017) Issue 3 Pages 215-223

Details
Download PDF (163K) Contact us
Abstract

Vector Stream Cipher (VSC) is a stream cipher which consists of permutation polynomial over a ring of modulo 2w. The algorithm for generating key stream is very simple and the encryption is very fast. Some theoretical attacks for VSC have been reported so far since the invention of VSC in 2004. Then, the authors proposed some improvements and developed “Vector Stream Cipher 2.0 (VSC 2.0)” to be immune against the theoretical attacks. In this paper, we propose further improvement of VSC 2.0 to publish as a new chaos cipher “Vector Stream Cipher 2.1 (VSC2.1)”. VSC 2.1 is faster and more secure than VSC 2.0. Our result suggests that permutation polynomials over a ring of modulo 2w are useful for cryptography.

Information related to the author
© 2017 The Institute of Electronics, Information and Communication Engineers
Previous article Next article

Recently visited articles
feedback
Top