基于物理不可克隆函数的加密通信系统

Encryption Communication System Base on PUF

当前物联网设备数量快速增长,与此同时物联网设备易被入侵和系统密码易被破解等安全问题日益严重。针对此问题,提出了一种适用于物联网设备的基于物理不可克隆函数的加密通信系统。本系统通过物理不可克隆函数(PUF)产生加密密钥,随后利用对称加密算法SM4对通信数据进行加密,进而实现物联网设备数据的加密通信。调试结果表明:本系统设计的PUF平均片内、外海明距离分别为1.13%和43.3%,可以稳定有效地完成物联网设备的加密通信任务。

The number of IoT devices is growing rapidly.Meanwhile,IoT devices are vulnerable to intrude and system passwords are easily cracked,which is becoming more serious.Aiming at this problem,a cryptographic communication system based on physical unclonable function for IoT devices is proposed.The system generates a key for encryption through a physical unclonable function(PUF).Then the system uses the secret algorithm SM4 to encrypt the communicational data.Finally,the encrypted communication of the IoT devices’data is completed.The testing results show that the system can complete the encrypted communication task of the IoT device stably and effectively,the on-chip Hamming distance and the on-chip Hamming distance of PUF in this system is 1.13%and 43.3%.