Identification is being able to identify uniquely a user of a system or an application that is running in the system. Authentication is being able to prove that a user or application is genuinely who that person or what that application claims to be.
For example, consider a user who logs on to a system by entering a user ID and password. The system uses the user ID to identify the user and, at the time of logon, authenticates the user by checking that the supplied password is correct.
Here are some examples of the identification and authentication service in a WebSphere MQ environment:
The context information in a message allows the receiving application to find out about the originator of the message. It contains, for example, the name of the application that put the message and the user ID associated with the application.
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