Security issue using Nant

I need to store authentication information and I rather not have the password in plain text:

<property name="user"      value="theUser"/>  
<property name="password"  value="secret"/>

Has anyone figured out a way to encrypt property values in Nant?

I've looked in Nant and Nantcontrib docs but no mention of encry开发者_如何学Cption. I am considering going the route of creating my own Nant Task.

Any suggestions?