I don't believe such thing can be possible, by the following reason: it if was possible, it would greatly compromise OS security. The idea is: there is a single point in code where the user is authenticated; there are no a work-around, when Windows is already bootstrapped/loaded. If you store the password somewhere on a different system (nothing can prevent you from doing such an unsafe thing), it will be your responsibility, not the responsibility of the authors of the OS.
But if you agree to give someone the opportunity to use the password for authentication just once and then store it somewhere, you can do it in more or less secure way. (Unless you want to create a fixed account with never-changing password and deploy the remote system with such settings, which is possible but does not look flexible enough; what if the customers needs to replace that system?) But you should never store the password itself, because if your application can access it, some user will be able to do it, too, with some considerable effort. This is not really needed. The right way is to use
cryptographic hash function, store only the hash and use the hash. Probably, this is possible if you create your own RDP client implementation. Frankly, I'm not sure, because, at this moment, I don't know the detail of authentication via RDP. You can lean if from the very good CodeProject articles:
Remote Desktop using C#.NET[
^],
Palantir - Remote Desktop Manager[
^].
In the very worse case, you would need to design and implement your own analog of RDP, and that would require you to create the service part as well (please see one of the links below commented with "as to the custom protocol similar to RDP").
To explore the authentication mechanism using the cryptographic hash function, please see:
http://en.wikipedia.org/wiki/Cryptographic_hash_function[
^].
See also my past answers:
i already encrypt my password but when i log in it gives me an error. how can decrypte it[
^],
TCP Connection with username and password[
^] (as to the custom protocol similar to RDP),
Decryption of Encrypted Password[
^],
storing password value int sql server with secure way[
^].
—SA
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