一種實用的混沌保密編碼方法

基于實用符號動力學的基礎理論，提出了一種實用的混沌保密編碼方法，該方法借助于單峰的logistic映射處于混沌吸引子狀態(tài)時產(chǎn)生的符號序列作為密鑰，對信源編碼信號進行加密。使用數(shù)字可編程芯片TMS320VC5402實現(xiàn)了實時保密編碼，并對混沌符號密鑰的相似性作了分析。研究表明，該方法在實際應用中具有推廣價值。
關 鍵 詞 符號動力學; 混沌保密; 符號密鑰; 硬件實現(xiàn)

A Practical Method of Chaos Secret Coding

Abstract Based on the foundation theory of applied symbolic dynamics, we get a practical method of chaos secret coding, i.e. use the strange attractor of logistic map to produce the symbol secret key to modulate the source code. Then, we realize the real-time secret coding on the digital chip TMS320VC5402 and analyze the similarity of symbol secret keys. The results show that this method has extended value for the practical usage.
Key words symbolic dynamics; chaos secret; symbol secret keys; hardware implement