Encryption puzzle

[joppiesaus]

Hello, I made a nice puzzle just for you.

It's about encryption, I made a simple encryption program. It works great!

Here's the story:

I "forgot" how it actually worked(not really). I want you to find out how it works!

Here's the program!(Note: Written in C#, needs .NET 4 Framework)

Rules:

• Don't use decompilers
  
• I want a step-by-step guide what happens when you encrypt a piece of text. For example:

  1: the string is devided into seperated characters
  2: The characters are placed backwards
  3...

Hints:

• The system picks the ASCII value of characters
  
• A "d" has a value of 100!
  
• Something gets multiplied by two
  
• - and + is used, each one time
  
• Range is the range of the random

Your reward is... the source code! If the answer is (close to) right of course.

Have fun!

[TheCanadianVendingMachine]

3197680:-

Thats it