Using PHP, how to send an encrypted file to a .NET script for decryption

Here's the scenario:

Trying to implement a single sign on intranet system, but there are mixed PHP and .NET scripts, I am the PHP guy, but the cookie was created and encrypted by a .NET scripte, I can't figure out how to decrypt the cookie using PHP, so I'm going to send the encrypted cookie to t开发者_JAVA技巧he .NET script for decryption, and then the .NET script will send me back the data with JSON, all using a https secured connection. I am trying to figure out what's the best way to send the encrypted cookie over to the .NET script, can I just send the encrypted cookie as a string using "GET"?

---

If the encrypted cookie is a string and reasonably short, then just send it in a query string with GET. If it's binary data, then base64_encode it first. If the data is long, you'll probably want to do a POST instead.

You're probably better off, though, understanding how the .NET code decrypts things. Then you can write your own decryption in PHP.