# Package org.apache.ignite.internal.processors.authentication

Class Summary
AuthorizationContext: Ignite authentication context.
IgniteAuthenticationProcessor
User
UserAcceptedMessage: Is sent as an acknowledgement for end (with success or error) of user management operation on the cluster (see `UserProposedMessage` and `UserManagementOperation`).
UserAuthenticateRequestMessage: Message is sent from client to coordinator node when a user needs to authorize on client node.
UserAuthenticateResponseMessage: Is sent from coordinator node to client to deliver the results of the user authentication.
UserManagementOperation: The operation with users.
UserManagementOperationFinishedMessage: Message indicating that user operation is finished locally on the node.
UserProposedMessage: A node sends this message when it wants to propose user operation (add / update / remove).

Enum Summary
UserManagementOperation.OperationType: User action type.

Exception Summary
IgniteAccessControlException: Exception that represents authentication / authorization failure.
UserManagementException: Exception that represents failures of user management operations.

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Ignite Database and Caching Platform | : ver. 2.10.0
Release Date | : March 10 2021