Question regarding SecureIdentityModule

[mandarm]

Hi,
I am new to JBoss Security and have a question related to SecureIdentityModule class.
I was able to use this class and set up encrypted passwords in config files. The next step would be to use a customized version of this class so that I can use a different secret other than "jaas is the way" and if necessary use a different algorithm.
How can I customize this class ?

Am I supposed to copy the source code, rename and change it and compile back into my app jar ?
OR
There is some easier way that I am missing ?

I am sure I am missing something here.

Thanks for your help.

Regards
Mandar

[starksm64]

See http://wiki.jboss.org/wiki/Wiki.jsp?page=EncryptingDataSourcePasswords and the more generic JaasSecurityDomainIdentityLoginModule.