de> objects.

 <p> Authentication context configuration objects serve as sources of 
 the authentication context objects, that is, <code>ClientAuthContext</code> or
 <code>ServerAuthContext</code> objects, for a specific message layer
 and messaging context.
 
 <p> Authentication context objects encapsulate the initialization, 
 configuration, and invocation of authentication modules, that is,
 <code>ClientAuthModule</code> or <code>ServerAuthModule</code> objects, for
 a specific message exchange within a 