安全芯片操作系统的设计方法  

Design Method of Security Chip Operating System

作　　者：庞振江 徐平江 刘芳 

机构地区：[1]北京智芯半导体科技有限公司

出　　处：《信息技术与标准化》2022年第1期22-26,共5页Information Technology & Standardization

摘　　要：介绍了一种新型的安全芯片操作系统,该系统由存储及文件管理子系统及安全子系统组成。以扇区为基本单元组成微小文件管理系统,结合热备份的机制实现无冗余写入的掉电保护功能。设计了指令驱动的安全状态寄存器,通过状态寄存器当前读写权限状态与文件预置的读写权限的比对,判决访问的合法性。最终实现了文件空间随应用自适应增长、高效的可定制安全的芯片操作系统。This paper presents a new secure chip operating system.The system consists of storage management module,file and power down protection module and safety status register.The micro file management system is composed of sectors as the basic unit,combined with the hot backup mechanism to realize the power down protection function without redundant writing.An instruction driven security status register is designed.The access legitimacy is determined by comparing the current read-write permission state of the status register with the preset read-write permission of the file.Finally,an efficient and customizable secure chip operating system with adaptive growth of file space with application is realized.

关 键 词：安全芯片 片内操作系统 状态寄存器 

分 类 号：TP309[自动化与计算机技术—计算机系统结构] TN40[自动化与计算机技术—计算机科学与技术]