Spring Security Custom Authentication and Password Encoding

Question

Is there a tutorial out there or does anyone have pointers on how to do the following with Spring-Security?

Task:

I need to get the salt from my

Answer 1

For what it's worth, I wrote this blog post detailing what you've described: http://rtimothy.tumblr.com/post/26527448708/spring-3-1-security-and-salting-passwords