一种基于SRAM的FPGA的加密方法

FPGA在现代电子系统设计中，由于其卓越性能、灵活方便而被广泛使用，但基于SRAM的FPGA需要从外部进行配置，配置数据很容易被截获，故存遮安全隐患。总结了当前FPGA的加密方法；提出了一种基于外部单片机的FPGA加密方法，该方法中使用外部单片机配合FPGA产生了真随机数，并利用随机数进行加密，保护FPGA内部设计的知识产权；最后给出了该加密方法的一个实例。实验结果表明，该方法实现简单、使用灵活，适用于成本敏感场合。

An Encryption Method of SRAM-Based FPGA

In the modern electronic system design,FPGAs are widely used because of its excellent capability and agile design.However,SRAM-Based FPGA need be configured outside,and the configuration data may be captured easily,which bring out security problem.Summarizes the current methods of FPGA encryption,and brings forward a new method of based external single-chip microcomputer FPGA encryption.This method produces real random number by SCM cooperating FPGA and adopts proper encryption algorithm to encrypt the random number,protect the intellectual property of the FPGA internal design.At last,show an example of the encryption.The experiment indicates that the method is implemented easily,used neatly,and suitable for cost sensitive occasion.