| 摘要: |
| 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。 |
| 关键词: 保密通信 混沌编码 数字滤波器 |
| DOI： |
|
| 基金项目:重庆市科委自然科学基金资助项目（2007ba2017） |
|
| A Novel Digital Chaotic Encoder |
| XIAO Li-li,HE Shi-biao,TIAN Dong,WU Yong-bin |
| (Department of Communication and Information System, Chongqing Communication Institute,Chongqing 400035, China) |
| Abstract: |
| Aiming at the shortcoming that initial value is not required before de
coding of the decoder, an improved en decoder is proposed. To restore the origi
nal si
gnal exactly, the state of the decoder must be initialized to that of the encode
r. Simulation results show that the new en decoder possesses much better securi
ty performance compared with original chaotic en decoder. |
| Key words: secure communication chaos code digital filter |
