基于Nios Ⅱ软核的DES加密系统设计  

Design of DES Encryption System Based on Nios Ⅱ Soft Core

作　　者：吴林煌[1] 杨秀芝[1] 

机构地区：[1]福州大学通信与信息工程学院,福建福州350002

出　　处：《现代电子技术》2008年第19期84-87,共4页Modern Electronics Technique

摘　　要：DES算法在信息安全领域扮演着重要的角色,采用软件实现DES算法速度慢,不能满足一些高速应用领域的要求,所以采用硬件实现的方法,在FPGA上实现DES算法,速度非常快。另一个创新之处在于采用Nios Ⅱ软核作为整个加密系统的控制器,通过Nios Ⅱ软核控制串口收发数据以及DES模块的加密过程,Nios Ⅱ软核的最大特点是用户可以灵活定制,这就使得整个系统的扩展性和灵活性非常好,具有很好的应用前景。Data Encryption Standard（DES） encryption algorithm plays an inportant role in the field of information security. The implementation speed of DES algorithm with software is slow, can＇t meet the requirement of some application fields. In this paper, the DES algorithm is implemented by hardware in a chip of FPGA has fast speed. The whole system of encryption is controlled by the soft core of Nios Ⅱ ,it controls receive or send data of serial port and controls the encryption process of DES model. The outstanding feature of Nios Ⅱ is that it can be customized by user flexibly,so expansibility and flexibility of the system is very well,it can be applied well in many fields.

关 键 词：DES NiosⅡ 定制 密钥更新 

分 类 号：TP332.3[自动化与计算机技术—计算机系统结构]