In this tutorial I will show you what is DES (Data Encryption Standard) and also I will show you how you write DES encryption and decryption algorithm in c#.net. DES is symmetric encryption and it uses 64 bits as a key size for encryption and decryption. For two communicating parties using symmetric encryption for secure communication, the key represents a shared secret between the two.There exist many symmetric encryption algorithms. A few of the well-known ones include AES, DES, Blowfish, and Skipjack. Please like this video and share it with your friends. Also please subscribe to my channel for more cool and awesome programming videos. Have a good day :) Link to source code: https://drive.google.com/open?id=0B8o...