基于m序列的端信息扩展序列生成机制研究

Research on generation mechanism of end spreading based on m-sequence

端信息扩展被用来解决高速端信息跳变系统中同步认证难的问题.其使用多项端信息组成的扩展序列来表征身份信息并使得各项端信息与所表示数据本身无关,达到隐藏真实信息的目的.然而,现有算法生成的端信息扩展序列存在伪随机性差、抗分析能力弱等弊端,不利于保障原始数据的安全与隐私.针对上述问题,首先将m序列引入端信息扩展序列的生成过程中,提出了基于m序列的端信息扩展序列生成机制,使其具有良好的机密性与伪随机性;其次,详细介绍了基于m序列的端信息扩展序列生成机制中包含的消息预处理、m序列生成与调制、端信息扩展序列生成等模块;随后,对其所具有的机密性、容失性及抗截获性等特性进行了理论分析;最后,对所提出机制生成的端信息扩展序列进行了性能测试实验并以现有端信息扩展序列生成算法作为对比方案.实验结果表明基于m序列生成的端信息扩展序列具有更好的伪随机性及鲁棒性,对保障秘密信息的安全可靠传输具有重要意义.

End Spreading is proposed to solve the problem of synchronization authentication in high-speed End Hopping system,which expresses the identity information as the extended sequence composed of several independent end information and protects the security and privacy of identity information well.However,the End Spreading sequence generated by the existing algorithm has poor pseudo-randomness and weak anti-analysis ability,which is not conducive toensuring the security and privacy of the original data.Therefore,the m-sequencewasintroduced into the generation process for the first time and proposes the generation mechanism of End Spreading based on m-sequence,making it have great confidentiality and pseudo-randomness.Secondly,the modules involved in this mechanism are discussed in detail,such as message preprocessing,m-sequence generation and modulation,and End Spreading sequence generation.Then,the characteristics equipped by the End Spreading sequence generated by the generation mechanism based on m-sequence are analyzed theoretically,like concealment,loss-tolerance,and anti-interference.Finally,the performance tests are conducted and the existing algorithm is regarded as the comparison scheme.The test results show that the End Spreading sequence generated by the generation mechanism based on m-sequence has better pseudo-randomness and robustness,which is of great significance to guarantee the security and reliable transmission of secret information.