| Original Articles |
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A Spatiotemporal-Chaos-Based Cryptosystem Taking Advantage of Both Synchronous and Self-Synchronizing Schemes |
| LÜ Hua-Ping1,2;WANG Shi-Hong1;LI Xiao-Wen1;TANG Guo-Ning1;KUANG Jin-Yu3;YE Wei-Ping3;HU Gang1,4 |
| 1Department of Physics, Beijing Normal University, Beijing 100875
2Department of Physics, Xuzhou Normal University, Xuzhou 221009
3Department of Electronics, Beijing Normal University, Beijing 100875
4The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875 |
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| Cite this article: |
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LÜ, Hua-Ping, WANG Shi-Hong et al 2004 Chin. Phys. Lett. 21 1016-1019 |
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Abstract Two-dimensional one-way coupled map lattices are used for cryptography where multiple space units produce chaotic outputs in parallel. One of the outputs plays the role of driving for synchronization of the decryption system while the others perform the function of information encoding. With this separation of functions the receiver can establish a self-checking and self-correction mechanism, and enjoys the advantages of both synchronous and self-synchronizing schemes. A comparison between the present system with the system of advanced encryption standard (AES) is presented in the aspect of channel noise influence. Numerical investigations show that our system is much stronger than AES against channel noise perturbations, and thus can be better used for secure communications with large channel noise.
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| Keywords:
05.45.Vx
05.45.Ra
43.72.+q
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Published: 01 June 2004
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| PACS: |
05.45.Vx
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(Communication using chaos)
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05.45.Ra
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(Coupled map lattices)
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43.72.+q
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(Speech processing and communication systems)
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