TY - JOUR
T1 - An improved chaotic cryptosystem with external key
AU - Xiang, Tao
AU - Wong, Kwok-wo
AU - Liao, Xiaofeng
PY - 2008/11
Y1 - 2008/11
N2 - In recent years, external key was introduced to chaotic cryptography by Pareek et al. and find its application in several discrete chaotic cryptosystems. The first part of this paper is devoted to the analysis of their essential weaknesses as well as some redundancies that contribute little to the security of those cryptosystems. Then, an improved scheme with all existing deficiencies and redundancies eliminated, is proposed. Theoretic analysis and numerical simulation both verify its superiority and security. © 2007 Elsevier B.V. All rights reserved.
AB - In recent years, external key was introduced to chaotic cryptography by Pareek et al. and find its application in several discrete chaotic cryptosystems. The first part of this paper is devoted to the analysis of their essential weaknesses as well as some redundancies that contribute little to the security of those cryptosystems. Then, an improved scheme with all existing deficiencies and redundancies eliminated, is proposed. Theoretic analysis and numerical simulation both verify its superiority and security. © 2007 Elsevier B.V. All rights reserved.
KW - Chaotic cryptography
KW - Chaotic map
KW - External key
UR - http://www.scopus.com/inward/record.url?scp=41149123614&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-41149123614&origin=recordpage
U2 - 10.1016/j.cnsns.2007.04.017
DO - 10.1016/j.cnsns.2007.04.017
M3 - RGC 21 - Publication in refereed journal
SN - 1007-5704
VL - 13
SP - 1879
EP - 1887
JO - Communications in Nonlinear Science and Numerical Simulation
JF - Communications in Nonlinear Science and Numerical Simulation
IS - 9
ER -