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	Security processing unit of PLC and bus arbitration method thereof
	Yu HB(于海斌); Zeng P(曾鹏); Liu XD(刘贤达); Zhao JM(赵剑明); Wang TY(王天宇); Zhang BW(张博文)
	2020-02-06
著作权人	SHENYANG INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES
国家	美国
文献子类	发明授权
产权排序	1
英文摘要	The present invention relates to a security processing unit of PLC and a bus arbitration method thereof, to provide PLC with an active defense means to build a PLC hardware and software security layer. On a hardware security layer, a part of hardware processing mechanism is added to support trusted measurement, encryption algorithms and signature algorithms, and a virtual isolation technology is used; and on a software security layer, transparent encryption and decryption, integrity verification, backup recovery and virtual isolation security mechanism are provided. The security processing aspect is improved to achieve the purpose of security and reliability. The present invention can correctly establish a trusted environment of PLC to ensure that PLC is guided by a strictly verified path. A new star type trusted structure is designed to reduce loss during information transmission and increase information transmission efficiency.
公开日期	2021-09-28
申请日期	2018-06-07
语种	英语
状态	有权
内容类型	专利
源URL	[http://ir.sia.cn/handle/173321/29702]
专题	沈阳自动化研究所_工业控制网络与系统研究室
作者单位	SHENYANG INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES
推荐引用方式 GB/T 7714	Yu HB,Zeng P,Liu XD,et al. Security processing unit of PLC and bus arbitration method thereof. 2020-02-06.

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