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## java.security
Class AuthProvider

    java.lang.Object
      java.util.Dictionary<K,V>
          java.util.Hashtable<Object,Object>
              java.util.Properties
                  java.security.Provider
                      java.security.AuthProvider

All Implemented Interfaces:
  Serializable, Cloneable, Map<Object,Object>

    public abstract class AuthProvider

extends Provider

This class defines login and logout methods for a provider.

While callers may invoke `login` directly, the provider may also invoke `login` on behalf of callers if it determines that a login must be performed prior to certain operations.

Since:
  1.5
See Also:
  Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.security.Provider
`Provider.Service`

Field Summary

Fields inherited from class java.util.Properties
`defaults`

Constructor Summary
`protected` | `AuthProvider(String name, double version, String info)` Constructs a provider with the specified name, version number, and information.

Method Summary
`abstract void` | `login(Subject subject, CallbackHandler handler)` Log in to this provider.
`abstract void` | `logout()` Log out from this provider.
`abstract void` | `setCallbackHandler(CallbackHandler handler)` Set a `CallbackHandler`.

Methods inherited from class java.security.Provider
`clear, elements, entrySet, get, getInfo, getName, getProperty, getService, getServices, getVersion, keys, keySet, load, put, putAll, putService, remove, removeService, toString, values`

Methods inherited from class java.util.Properties
`getProperty, list, list, load, loadFromXML, propertyNames, save, setProperty, store, store, storeToXML, storeToXML, stringPropertyNames`

Methods inherited from class java.util.Hashtable
`clone, contains, containsKey, containsValue, equals, hashCode, isEmpty, rehash, size`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Constructor Detail

### AuthProvider

    protected AuthProvider(String name,
                           double version,
                           String info)

  Constructs a provider with the specified name, version number, and information.

  Parameters:
    `name` - the provider name.
    `version` - the provider version number.
    `info` - a description of the provider and its services.

Method Detail

### login

    public abstract void login(Subject subject,
                               CallbackHandler handler)
                        throws LoginException

  Log in to this provider.

  The provider relies on a `CallbackHandler` to obtain authentication information from the caller (a PIN, for example). If the caller passes a `null` handler to this method, the provider uses the handler set in the `setCallbackHandler` method. If no handler was set in that method, the provider queries the auth.login.defaultCallbackHandler security property for the fully qualified class name of a default handler implementation. If the security property is not set, the provider is assumed to have alternative means for obtaining authentication information.

  Parameters:
    `subject` - the `Subject` which may contain principals/credentials used for authentication, or may be populated with additional principals/credentials after successful authentication has completed. This parameter may be `null`.
    `handler` - the `CallbackHandler` used by this provider to obtain authentication information from the caller, which may be `null`
  Throws:
    `LoginException` - if the login operation fails
    `SecurityException` - if the caller does not pass a security check for `SecurityPermission("authProvider.name")`, where name is the value returned by this provider's `getName` method

### logout

    public abstract void logout()
                         throws LoginException

  Log out from this provider.

  Throws:
    `LoginException` - if the logout operation fails
    `SecurityException` - if the caller does not pass a security check for `SecurityPermission("authProvider.name")`, where name is the value returned by this provider's `getName` method

### setCallbackHandler

    public abstract void setCallbackHandler(CallbackHandler handler)

  Set a `CallbackHandler`.

  The provider uses this handler if one is not passed to the `login` method. The provider also uses this handler if it invokes `login` on behalf of callers. In either case if a handler is not set via this method, the provider queries the auth.login.defaultCallbackHandler security property for the fully qualified class name of a default handler implementation. If the security property is not set, the provider is assumed to have alternative means for obtaining authentication information.

  Parameters:
    `handler` - a `CallbackHandler` for obtaining authentication information, which may be `null`
  Throws:
    `SecurityException` - if the caller does not pass a security check for `SecurityPermission("authProvider.name")`, where name is the value returned by this provider's `getName` method

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For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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