Cryptographic requirements for chaotic secure communications

Details Cryptographic requirements for chaotic secure communications Cryptographic requirements for chaotic secure communications

2003-11-20

arxiv.org/abs/nlin/0311039v1

International Journal of Bifurcation and Chaos 16 (8), 2129-2151, 2006

Nonlinear Sciences

Chaotic Dynamics

13 pages, 3 figures

Scientific paper

10.1142/S0218127406015970

In recent years, a great amount of secure communications systems based on chaotic synchronization have been published. Most of the proposed schemes fail to explain a number of features of fundamental importance to all cryptosystems, such as key definition, characterization, and generation. As a consequence, the proposed ciphers are difficult to realize in practice with a reasonable degree of security. Likewise, they are seldom accompanied by a security analysis. Thus, it is hard for the reader to have a hint about their security. In this work we provide a set of guidelines that every new cryptosystems would benefit from adhering to. The proposed guidelines address these two main gaps, i.e., correct key management and security analysis, to help new cryptosystems be presented in a more rigorous cryptographic way. Also some recommendations are offered regarding some practical aspects of communications, such as channel noise, limited bandwith, and attenuation.

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