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Java Simple MessageDigest Integrate  RSS feed

 
techi shawn
Greenhorn
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I just started learning java(no JSP) and am learning to create a simple system.
I research around and only found login from file.



1. How to integrate with MessageDigest for password to be hash SHA-256?
2. With login, how to add to file with password hash for user register and remove from file to delete user?
3. if I want Logout, how do i achieve it?
 
It is sorta covered in the JavaRanch Style Guide.
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