2004/02/29 by Shujun Li, Guanrong Chen, Kwok-Wo Wong +3
Computer Science · Physics and Astronomy · #Chaos-based Image/Signal Encryption #Cryptographic Implementations and Security #Quantum chaos and dynamical systems #cs.CR #nlin.CD
paper · pdf · doi:10.1016/j.physleta.2004.09.028
published as Physics Letters A, 332(5-6):368-375, 2004 · 13 pages, 2 figures
openalex publication_date 2004/10/05 · arxiv created 2004/11/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In 1998, M. S. Baptista proposed a chaotic cryptosystem, which has attracted much attention from the chaotic cryptography community: some of its modifications and also attacks have been reported in recent years. In [Phys. Lett. A 307 (2003) 22], we suggested a method to enhance the security of Baptista-type cryptosystem, which can successfully resist all proposed attacks. However, the enhanced Baptista-type cryptosystem has a nontrivial defect, which produces errors in the decrypted data with a generally small but nonzero probability, and the consequent error propagation exists. In this Letter, we analyze this defect and discuss how to rectify it. In addition, we point out some newly-found problems existing in all Baptista-type cryptosystems and consequently propose corresponding countermeasures.