Any extremely weak encryption suggestions?

Question

I have an XML file that contains information on how to connect to a database, including the username and the password. I would like to make the password human-unreadable.
Essentially what I am trying to do is make it such that the department secretary (i.e., casual users) cannot just simply look at the XML file and get the information needed; we have decided that it's not worth the time and effort to secure the password against determined crackers because they will more than likely be able to exploit other holes or use specialized tools. In other words, obsfucation rather than true security.
I'd like to go with something like Rot13, have the JavaBean do a simple substitution cipher on the password string when the time comes to write it to the XML file, and likewise, read the data back from the file. Other members of the team have suggested hard coding the seed into the class file, and doing a random number substitution.
Any suggestions?

Answer 1

As mentioned elsewhere in this forum, Sun doesn't provide Base64 encoding and decoding within its standard libraries (that I'm aware of). For something as trivial as this, I really don't want to suggest to the customer that they download and install a third party library.
Granted, he's going to have to install my classes, but I legally can't package someone else's Base64 into my jar file, and I don't want to tell him to use implementation A in the common libraries, and then have someone else come along demanding implementation B.
Rolling my own version of Base64 is a definite possibility, but I'd like to wait and see what else is suggested. :)