Hello friends! Welcome to my channel. My name is Abhishek Sharma. #abhics789 #Cryptography #NetworkSecurity #AbhishekDit Courses on my Website (big discounts going on) https://www.abhisheksharmadit.com/s/store In this video, I have explained the concept of what is cryptography and why is it necessary? If you learned something new do like and share this video with your friends and don't forget to subscribe to my channel :) There are lectures related to different subjects on this channel.Do check them out, guys. Link is given below: computer graphics:    • Computer Graphics   engineering economics:    • Engineering Economics   Cryptography :    • Cryptography and network security   .Net C# :    • .NET C#   Pointers in C :    • Pointers in C   Linked List for Interviews :    • Linked List for interviews   Java Tricky videos/programs for interviews :    • Java tricky programs/videos   File Handling in C :    • FILE Handling in C   pointers playlist:    • Pointers in C   C Programming tips and tricks:    • C tricky programs/videos   Abhishek VLOGS :    • Abhishek Vlogs   Concerts :    • Concerts