I am wondeirng if there's any alternative to encrypt datasource passwords?

I have followed http://wiki.jboss.org/wiki/Wiki.jsp?page=EncryptingDataSourcePasswords the link. However, my requirement is slightly variant.

My requirement is to create the *-ds.xml with encrypted password quoted in the file itself.

For example, the user-name and encrypted password are provided in the following config:

<datasources>
 <local-tx-datasource>
 ....
 <user-name>myUser</user-name>
 <password>my-encrypted-password</password>
 ...
 </local-tx-datasource>
</datasources>

I expect JBoss to read the encrypted password, decrypt it and then create the Datasource. BUT is this possible???

So, can we provide an encrypted password in the *-ds.xml file itself so it can be decrypted?

Any pointers much appreciated

Thanks
/Madhu