基于AES加密电路的防复制电路及系统设计  

Design of Copy Prevention Circuit and System Based on AES Encryption Circuit

作　　者：张玉浩[1] 徐志鹏[1] 黄新锐 胡航[1] 单伟伟[1] 

机构地区：[1]东南大学电子科学与工程学院,南京210096

出　　处：《电子器件》2015年第1期103-107,共5页Chinese Journal of Electron Devices

基　　金：江苏省大学生创新性实验计划项目(S2013040);国家自然科学基金项目(61006029)

摘　　要：随着各种抄板技术和芯片解剖技术的发展,嵌入式系统芯片正面临着越来越多受攻击风险,如何保护嵌入式系统产品不受非法复制,正日益受到人们的关注,各种防复制方法也应运而生。由此设计了一款软硬件协同的新型防复制电路及系统,用以实现对嵌入式软件版权的保护。防复制电路采用AES加密算法与嵌入式芯片进行多次随机动态加密验证,使破解者无法通过监控通信数据来破解验证保护。防复制电路中内置CPU和安全存储器,用来存储关键数据以及执行部分嵌入式程序,让破解者无法获得嵌入式芯片中完整的程序,从软硬件两方面实现了对嵌入式产品版权的充分保护。本电路在FPGA上进行了实现,并搭建被保护芯片与防复制FPGA电路的联合保护系统,实测结果显示该系统很好的完成了防复制的功能,未通过动态加密验证无法启动系统,此外,没有防复制电路的配合,无法执行完整的嵌入式芯片中的程序。Embedded chips and systems are facing a big threat of being copied easily as the emerging of circuit board copy technology. A novel copy prevention circuit is designed to build a copy prevention system to protect the intellectual property of embedded systems from being copied,by using a software and hardware co-design system. This design uses AES（ Advanced Encryption Standard） encryption algorithm circuit,CPU core and dynamic password authentication between the protected chip and copy prevention circuit to develop a complete system. Besides,CPU IP core and protection memory are used to run part of the main program codes and store some critical data in the copy prevention circuit. This circuit is implemented in a FPGA. The test results show that the whole system completed the copy-prevention functions that without the dynamic authentication the system could not start up. Plus,the whole program in the embedded chip will not be executed without the cooperation of the copy prevention circuit.

关 键 词：防复制 AES加密电路 动态口令认证 FPGA 

分 类 号：TN492[电子电信—微电子学与固体电子学]