Pass encrypted querystring between php and asp.net (c#)

Question

I need to pass a single variable in a querystring from one application (in PHP) to another (in ASP.NET). It's a one way transfer...That is I need to encrypt it in PHP and decrypt it in ASP.NET (c#).

I'm barely a newbie on PHP and I'd like not to have to do more than add a tag to the page that needs to do the passing.

The data will be anywhere from 5 - 15 characters..only letters and numbers.

Thanks!

Answer 1

hey.. u figured it out? what algorithm did you use? something with a private key?