CAJ | 학술논문

OPC UA是一种基于Web服务的新型软件接口规范和应用，能够让不同地区的工业自动化系统之间通过网络进行交互。因此安全问题对于系统的发展十分关键。根据系统的安全需求，在现有模型的基础上加入安全策略管理模块，提高OPC UA安全模型性能，使得OPC UA的安全特性适用于不同的安全级。并且设计安全模型中的信息模型，从而更好的平衡OPC UA的通信安全和通信效率之间的关系。
OPC UA시일충기우Web복무적신형연건접구규범화응용，능구양불동지구적공업자동화계통지간통과망락진행교호。인차안전문제대우계통적발전십분관건。근거계통적안전수구，재현유모형적기출상가입안전책략관리모괴，제고OPC UA안전모형성능，사득OPC UA적안전특성괄용우불동적안전급。병차설계안전모형중적신식모형，종이경호적평형OPC UA적통신안전화통신효솔지간적관계。
OPC unified architectures ( OPC UA) is a new software interface specification and applica-tion based on Web service for plant automation systems in different areas which communicate with each other over the internet .The security issue holds the key to development for systems .According to security requirements of system , improving performance of security model by adding a security strategy manage -ment module into the existing model , so that the security characteristic of OPC UA can adapt to different security level .And designed the information model of the security model to balance the relationship of OPC UA communication security and efficiency be better .