【摘要】 密码键盘广泛应用于金融行业,为保证密码输入过程中的安全性,该系统目标通过PCI-2.0安全认证。本文在讨论了FreeRTOS操作系统在ADS中移植于AT91SO51安全芯片(arm7)的基础上,实现了一种基于实时操作系统FreeRTOS的密码键盘方案。对系统功能模块使用任务的方式进行处理,该系统采用FreeRTOS 5.0.4版本,软件结构模块化,多个功能模块的任务化使得实现更为方便。更多还原

【Abstract】 PED(PINPAD Entry Device) is widely used in financial Industry,the system aims to pass the PCI-2.0 authentication so as to ensure the safety in inputting password.On the basis of the discussion of the transplantation of FreeRTOS to AT91SO51 microchip in ADS environment,a PED scheme is realized based on FreeRTOS.In the system FreeRTOS version 5.0.4 and modular software structure are adopted,thereby facilitating the realization of the system.更多还原