基于混沌映射的数码防伪技术研究

Research on Anti-counterfeiting Technology for Digital Based on Chaotic Map

提出了一种基于混沌映射的数码防伪的加密算法。在加密的过程中,选用结构相对简单且生成序列相对复杂的正弦混沌映射和Chebyshev映射。对两个混沌映射进行敏感性和随机性测试,得出两个混沌映射具有良好的密码学特性,并验证得出该加密系统具有良好的加密性能。应用该混沌系统进行加密,提高了算法的复杂度,增大了密钥空间,提高了破译难度,使商品在市场流通的过程中具有更强的防伪性能。

The encryption algorithm for data encryption is proposed, which is based on chaotic map system. In the encryption process，we take the sine chaotic map and Chebyshev-map together that the structure is relative simple and generate a relatively complex sequence . Sensitivity and random testing of two chaotic mapping, two chaotic maps obtained with better cryptographic properties, and verify obtained the encryption system has better encrypted performance. Which makes constructing algorithm more complex, key space of algorithm will be bigger and it’s harder to break into this cryptosystem. As a result, the goods process of commodity circulation have a stronger function of anti-counterfeiting.