嵌入式系统通信中sm2加密技术的研究.pdf

嵌入式系统通信中SM2加密技术研究摘要 I 嵌入式系统通信中SM2加密技术研究摘要随着计算机与通信技术的进步,嵌入式系统获得了巨大的发展,并日益深入到日常生活中的方方面面。网络的不断发展使得远程操控工业、家庭设备变得轻而易举,因此在嵌入式系统之间进行安全通信就显得极为重要。SM2公钥密码算法是由国家商用密码管理局于2010年公布的一种商用密码算法,用于取代此前在我国广泛使用的RSA算法。SM2算法相对于RSA算法具有计算量小,处理速度快,同等安全情况下所需密钥长度更短等优点,具有非常高的安全性与实用性。本文在嵌入式系统平台中以软件方式实现SM2算法、完成数据通信以及软件升级过程的加解密。椭圆曲线密码算法的的改进型,算法中大部分运算都集中在有限域上的大数运算,因此在算法实现中本文引入了OpenSSL安全协议中有关大数运算的算法,并将其做部分裁剪后移植到嵌入式系统中,在这基础上编写了SM2加密、解密算法和其中的SM3杂凑算法的算法库。本文采用AT91SAM9260微处理器进行了性能测试,最高时钟频率180MHz时, ,,与使用ASIC加密芯片的硬件加密方式用时相当,。关键词:SM2加密,嵌入式系统,OpenSSL,加密通信,远程更新作者:谢华菁指导教师:周鸣籁 Abstract Research onSM2Encryption Technology munication of Embedded Systems II Research on SM2Encryption Technology municationof Embedded Systems Abstract With puter and communication technology, embedded systems have gained tremendous development, and affectdeeplyinto every aspect of daily life. Continued development of the network enables remote control of industrialand household equipment a breeze, so the secure communication between the embedded system is extremely important. SM2 public key cryptography algorithm is mercial encryption algorithm published by the State Administration mercial Encryption in 2010,it is used to replace the RSA algorithm which is previously widely used in our pared to RSA algorithm, SM2 algorithm has the advantages ofa smaller amount of calculation, a faster processing speed,and a shorter key lengths under the same conditions required for the safety, together with high safety and practicality. In this paper, SM2 algorithm is implemented in software in embeddedsystems platforms,along with munication and encryption in software upgrade process. SM2 is animprovedalgorithmof Elliptic Curve Cryptography algorithm,most putationconcentratein large puting arithmetic on the finite , this paper introduces the algorithmsin OpenSSL security agreement relating to large number