限次使用的电控加解密系统

Electrically Controlled Encryption and Decryption System Limited to Number of Use

介绍一种限次使用的电控加解密系统的控制原理,该系统可用于安装在工程机械车辆上,以满足客户试用的需求,同时促进客户及时付款。系统主要由控制器和加密狗2部分组成。控制器通过ATMEGA16L单片机检测自身输入引脚电平变化、向EEPROM写入数据和驱动继电器等操作,来实现加密任务。加密狗通过ATMEGA8单片机,负责与控制器通信,实现解密任务。

The article introduces the control principle of an electrically controlled encryption and decryption system that is limited to number of use. The system can be installed on a construction machinery vehicle to meet the trial requirements of customers and promote the timely payment by customers. The system mainly consists of two parts,namely,the controller and the dongle. The controller tests the level variation of its own input pin via the ATMEGA16L single-chip microcomputer,writes data into EEPROM and drives the relay,etc. to realize encryption. The dongle communicates with the controller via the ATMEGA16L single-chip microcomputer to realize decryption.