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Zbl 1134.94371
Zhang, Linhua
Cryptanalysis of the public key encryption based on multiple chaotic systems. (English)
[J] Chaos Solitons Fractals 37, No. 3, 669-674 (2008). ISSN 0960-0779

Summary: Recently, {\it Ranjan Bose} [Phys. Rev. Lett. 95, 098702 (2005)] proposed a novel public key encryption technique based on multiple chaotic systems. Unfortunately, {\it K. Wang} et al. [Security of public key encryption technique based on multiple chaotic system. Phys Lett A, in press] soon gave a successful attack on its special case based on Parseval's theorem. In this letter, we give an improved example which can avoid the attack and point out that Wang cannot find the essential drawback of the technique. However, further experimental result shows Ranjan's encryption technique is inefficient, and detailed theoretic analysis shows that the complexity to break the cryptosystem is overestimated.

MSC 2000:: *94A60 Cryptography
37D99 Dynamical systems with hyperbolic behavior

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