How to encrypt with JavaScript and then decrypt with C#

Question

I'm working with ASP.NET MVC4 and here is what i want to do:

I have a Web API that Gets a username, a password and a serial number and return a JSON file with the required data. But as a matter of security, passwords should not figure that clear in the URL, so I changed its implementation into a Web API that gets an encrypted string, that will be decrypted later to extract the three fields.

The problem is when working with a view that calls this Web API, I should encrypt the text fields entered by the user using JavaScript, right? So this encryption with JavaScript should correspond to the decryption method written in C#. Is there any existing way to do that ? Or should I consider this problem differently?

Answer 1

Just use a secure connection ( https:// ssl).

Any encryption you can do in JavaScript can be reversed, since the code used to encrypt the data is available to anyone that uses it, and can easily be reverse-engineered.