中文摘要：

为解决传统低维二进制混沌序列作为伪随机序列来源而随机性不理想、动力学特性易退化的问题,利用四阶CNN细胞神经网络超混沌系统的四路实数值序列进行比较,生成一种新的四进制超混沌序列,并应用于数字签名算法和数据摘要算法。仿真结果表明,新的超混沌序列的随机性优于传统的二进制混沌序列,能够通过＂一次一密＂实现复杂网络环境中的快速加密数据传输,克服现有多种加密算法已被破译的问题。

英文摘要：

As a new rich source of pseudo-random coding,the random property and dynamical degradation of low-dimensional binary chaotic sequences were non-ideal.Recently,several encryption and message digest algorithms have been deciphered.In order to solve these problems,it proposed an enhanced quaternary hyperchaotic sequence by comparing the four real-valued sequences of fourth-order CNN（cellular neural networks） hyperchaotic system.It proved that the random of quaternary hyperchaotic sequences was superior to the traditional binary chaotic sequences.Simulation results show the feasibility of the encryption algorithm and message digest algorithm in solving ＂one-time pad＂,rapid authentication and encrypted data transmission with complex network environment.