基于状态空间法的加密器设计研究

本文基于控制理论中的状态空间方法,提出了一种设计加密器和解密器的方法.加密器没计为—个非线性能观系统,这种加密器在同等的安全强度情况下,较之传统的移位寄存器式加密器没计容易,计算复杂度低,加解密速度快,结构灵活,易于实现.本文还讨论了提高这种加密器性能的基本途径,并举了几个说明性例子说明这种加密器及其设计方法的可行性.

An Encryptor Design Research Based on State Space Method

Based on the state space analysis method on control theory, this paper suggests an efficient en(?)ryptor and d(?)ryptor design method where encryptor is designed to be a nonlinear observable system. Under the same s(?)curity intensity, this kind of en(?)rypt ro has many advantages, such as designing (?)asier, en(?)ryptor structure more flexible, en(?)rypt speed faster, and realization more convenient in comparison with the traditional shift register en(?)ryptor. How to in(?)r(?)ase en(?)ryptor performance is also discussed, and some illustrative examples are listed to explain the efficiency of this kind of en(?)ryptor and de(?)ryptor design method.