Cryptanalyzing an improved security modulated chaotic encryption scheme using ciphertext absolute value
arXiv:nlin/0406065 · doi:10.1016/j.chaos.2004.07.006
Abstract
This paper describes the security weakness of a recently proposed improved chaotic encryption method based on the modulation of a signal generated by a chaotic system with an appropriately chosen scalar signal. The aim of the improvement is to avoid the breaking of chaotic encryption schemes by means of the return map attack introduced by Perez and Cerdeira. A method of attack based on taking the absolute value of the ciphertext is presented, that allows for the cancellation of the modulation scalar signal and the determination of some system parameters that play the role of system key. The proposed improved method is shown to be compromised without any knowledge of the chaotic system parameter values and even without knowing the transmitter structure.
12 pages, 8 figures, LaTeX format
References in corpus (1)
Cited by in corpus (5)
- Cryptographic requirements for chaotic secure communications
- Breaking a chaos-based secure communication scheme designed by an improved modulation method
- Return-Map Cryptanalysis Revisited
- Analog Chaos-based Secure Communications and Cryptanalysis: A Brief Survey
- Cryptanalysis of a computer cryptography scheme based on a filter bank