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一、认证业务 信息系统安全的一个重要方面就是防止系统遭受攻击,如获取信息、破坏系统或获得对资源的非授权访问等。认证则是防止攻击的重要技术,对于开放环境中各种信息系统的安全性有重要作用。认证可分为实体认证和消息认证。实体认证是验证消息的发送者是否是真的;消息认证是验证消息的完整性。在达到基本的安全目标方面,实体认证业务和消息认证业务都具有重要作用。
First, the certification business An important aspect of information system security is to prevent system attacks, such as access to information, damage to the system or access to resources, such as unauthorized access. Authentication is an important technique to prevent attacks and plays an important role in the security of various information systems in an open environment. Certification can be divided into physical certification and news certification. Entity authentication is to verify the sender of the message is true; message authentication is to verify the integrity of the message. Both the entity authentication business and the message authentication business play an important role in meeting basic security goals.