如何使用Visual Studio 2013 Express和Windows窗体创建C＃Encrypt-Decrypt程序？

I've been wanting to create a encrypt decrypt program for a while now and basically I would like to hook up 3 text boxes together with one being text to encrypt. the encrypted code, and the hash used to encrypt the text. so if the program is restarted you can input the hash and the encrypted text to decrypt. Here's what I've got far:I've been wanting to create a encrypt decrypt p