(Message Authentication: Used to ensure message integrity and resistance to repudiation. In many cases, users need to acknowledge whether the online information is fake and whether the information has been modified or forged by a third party, which requires message authentication. Authentication: used to identify user identity. Including identification and verification. Identification refers to identifying and distinguishing the identity of the visitor; verification refers to the recognition of the identity of the visitor as claimed.
Information Security Principles and Technologies ch06-Identity Authentication and Access Control (1).ppt)
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