Encrypt value before commit

Hello,
I'm using Oracle JDeveloper 11g Release 2 (11.1.2.3.0).
I have a form that the user must enter some values, one of these values is a password. I need to pick up that value before commit and encrypt it. Actually the password is stored in the database without encyptation, just as the user entered it.
My application does not use adf security, and now it's too late to change everything.
Any idea that how can I fix this?
Thanks in advance!

Hello Shay!
Thanks a lot for your answer, I'm newby in ADF and I don't know how to do that. I think that the easiest option is to overwrite the doDML method.
I overwrite this method in the EOImpl and, now I have this:
     * Custom DML update/insert/delete logic here.
     * @param operation the operation type
     * @param e the transaction event
    protected void doDML(int operation, TransactionEvent e) {
        super.doDML(operation, e);
I have a method called encrypt(password), that return the password encrypted.
How can I set the new string to the password attribute when I update on database? I guess I have to insert this code before super.doDML(operation e);, is it?
if (operation == this.DML_UPDATE){
            // CODE HERE
Please can you help me with this? Thanks in advance!

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Encrypt value before commit

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