基于FPGA的FSK加密通信  

FSK Encryption Communication Based on FPGA

作　　者：杨自恒[1] 齐滨[1] 李博[2] 

机构地区：[1]黑龙江大学信号与信息重点实验室,黑龙江哈尔滨150080 [2]中国科学技术大学,安徽合肥230026

出　　处：《现代电子技术》2009年第5期78-80,共3页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(60672011);黑龙江省科学技术计划项目资助(GZ06A101)

摘　　要：主要介绍了二进制移频键控FSK通信过程中利用FPGA进行伪随机序列加密的实现方法。移频键控是信息传输中使用较早的一种调制方式,它具有实现容易,抗噪声与抗衰减性能较好的优点,在中低速数据传输中得到了广泛的应用。直接利用FPGA产生伪随机序列的方法可以为系统设计或测试带来极大的便利。给出了基于线性反馈移位寄存器电路,设计一种简洁的伪随机序列发生器的方法。这种方法所产生的随机序列不仅可具有极长的周期,而且还具有良好的随机特性。由于该伪随机序列可以被设计成任意长度,所以设计过程比较灵活。介绍了加密的设计理论、设计过程和硬件实现,该电路可进行下载生成实际电路,并应用到信息安全领域中。The method of using FPGA to encrypt pseudo - random sequence in the process of binary Frequency Shift Keying（FSK）communication is introduced. FSK, which is early used in the information transmission, has many advantages such as it＇s convenience to realize, anti - noise and anti - attenuation, so it is widely used in middle and low - speed data trans- mission. Now,as FPGA can be directly used to generate pseudo - random sequence. It has become an indispensable technology and brought great convenience to system design or test. In this paper, a simple method of pseudo- random sequence generator based on the linear feedback shift register circuit is designed. This method can not only has a extremly long cycle, but also has good random properties. As the pseudo - random sequence can be designed to any length,so the design process turn out to be more flexible. The design theory of encryption,design process and hardware implementation are introduced. The circuit can be downloaded to generate the actual circuit which can be applied to the field of information security.

关 键 词：伪随机序列发生器 线性反馈移位寄存器 M序列 移频键控FSK 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]