Web services security service provider programming interfaces

Several Service Provider Interfaces (SPIs) are provided to extend the capability of the Web services security run time. The following list contains the SPIs that are available for WebSphere Application Server:

• com.ibm.wsspi.wssecurity.config.KeyLocator is an abstract for obtaining the keys for digital signature and encryption. The following list contains the default implementations:

  • com.ibm.wsspi.wssecurity.config.KeyStoreKeyLocator

    Implements the Java key store.

  • com.ibm.wsspi.wssecurity.config.WSIdKeyStoreMapKeyLocator

    Provides a mapping of the authenticated identity to a key for encryption. Or, the implementation uses the default key that is specified. This implementation is typically used in the response sender configuration.

  • com.ibm.wsspi.wssecurity.config.CertInRequestKeyLocator

    Provides the capability of using the signer key for encryption in the response message. This implementation is typically used in the response sender configuration.

• com.ibm.wsspi.wssecurity.id.TrustedIDEvaluator is an interface that is used to evaluate the trust for identity assertion. The default implementation is com.ibm.wsspi.wssecurity.id.TrustedIDEvaluatorImpl, which enables you to define a list of trusted identities.

• The Java Authentication and Authorization Service (JAAS) CallbackHandler APIs are used for token generation by the request sender. This interface can be extended to generate a custom token that can be inserted in the Web services security header. The following list contains the default implementations that are provided by WebSphere Application Server:

  • com.ibm.wsspi.wssecurity.auth.callback.GUIPromptCallbackHandler

    Presents a login prompt to gather the basic authentication data. Use this implementation in the client environment only.

  • com.ibm.wsspi.wssecurity.auth.callback.StdinPromptCallbackHandler

    Collects the basic authentication data in the standard in (stdin) prompt. Use this implementation in the client environment only.

  • com.ibm.wsspi.wssecurity.auth.callback.NonPromptCallbackHandler

    Reads the basic authentication data from the application binding file. This implementation might be used on the server side to generate a user name token.

  • com.ibm.wsspi.wssecurity.auth.callback.LTPATokenCallbackHandler

    Generates a Lightweight Third Party Authentication (LTPA) token in the Web services security header as a binary security token. If basic authentication data is defined in the application binding file, it is used to perform a login, to extract the LTPA token from the WebSphere credentials, and to insert the token in the Web services security header. Otherwise, it will extract the LTPA security token from the invocation credentials (run as identity) and insert the token in the Web services security header.

The JAAS LoginModule API is used for token validation on the request receiver side of the message. We can implement a custom LoginModule API to perform validation of the custom token on the request receiver of the message. After the token is verified and validated, the token is set as the caller and then run as the identity in the WAS run time. The identity is used for authorization checks by the containers before a Java 2 Platform, Enterprise Edition (J2EE) resource is invoked. The following list presents the are the default AuthMethod configurations provided by WebSphere Application Server:

BasicAuth

Validates a user name token.

Signature

Maps the distinguished name (DN) of a verified certificate to a Java Authentication and Authorization Service (JAAS) subject.

IDAssertion

Maps a trusted identity to a JAAS subject.

LTPA

Validates an LTPA token that is received in the message and creates a JAAS subject.

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See Also

Lightweight Third Party Authentication
Web services security model in WebSphere Application Server
Login mappings

 

See Also

Web services security support

 

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