The javadoc reference information for IBM® JGSS includes classes and methods in the org.ietf.jgss api package and the Java™ versions of some Kerberos credential management tools.
Although JGSS includes several publicly accessible packages (for example, com.ibm.security.jgss and com.ibm.security.jgss.spi), you should use only APIs from the standardized org.ietf.jgss package. Using only this package ensures that your application conforms to the GSS-API specifications and ensures optimum interoperability and portability.