基于 COM 口通信数据加密系统设计与实现

摘要

PC control of single chip microcomputer system is widely used,but the upper machine and lower machine communication as vulnerable to the threat of command control and data transmission be cracked.In order to effectively solve the above problem,this paper puts forward the following security so-lution:based on AES encryption algorithm,the upper machine and lower machine communication technol-ogy of digital signature,authentication and the control instruction,data communication is encrypted,thus effectively improve the security of the upper machine and lower machine communication system,guarantee the hardware and software systems are not stolen.%上位机控制的单片机系统得到广泛应用，但是上位机与下位机通信时容易遭到指令控制和数据传输被破解的威胁。为了有效解决上述问题，提出了以下安全方案：基于 AES 加密算法下，对上位机和下位机通信时进行数字签名、身份验证及对控制指令、数据通信进行加密，从而有效提高上位机和下位机系统通信的安全性，有力保证了软硬件系统不被盗用。