一种改进的数字混沌编码器

A Novel Digital Chaotic Encoder

针对解码器在解码前不需要初始化,攻击者容易重构出解码器结构这一缺陷,提出了一种新的编解码方法。改进后的解码器只有当编、解码器的初始状态相同时,解码器才能正确地恢复出原始信息序列。仿真结果表明,改进后的混沌编解码器结构比原结构具有更好的保密性能。

Aiming at the shortcoming that initial value is not required before decoding of the decoder, an im- proved en-decoder is proposed. To restore the original signal exactly, the state of the decoder must be initialized to that of the encoder. Simulation results show that the new en-decoder possesses much better security performance compared with original chaotic en-decoder.