# Package javax.security.auth.message

This package defines the core interfaces of the JSR 196 message authentication SPI.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  ClientAuth | An implementation of this interface is used to secure service request messages, and validate received service response messages.
  MessageInfo | A message processing runtime uses this interface to pass messages and message processing state to authentication contexts for processing by authentication modules.
  MessagePolicy.ProtectionPolicy | This interface is used to represent message authentication policy.
  MessagePolicy.Target | This interface is used to represent and perform message targeting.
  ServerAuth | An implementation of this interface is used to validate received service request messages, and to secure service response messages.

- Class Summary
  Class | Description
  --- | ---
  AuthStatus | The AuthStatus class is used to represent return values from Authentication modules and Authentication Contexts.
  MessagePolicy | This class defines a message authentication policy.
  MessagePolicy.TargetPolicy | This class defines the message protection policies for specific Targets.

- Exception Summary
  Exception | Description
  --- | ---
  AuthException | A generic authentication exception.

## Package javax.security.auth.message Description

This package defines the core interfaces of the JSR 196 message authentication SPI. The SPI defines the interfaces by which pluggable message authentication modules may be configured and invoked by message processing runtimes.

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