How WhatsApp Encrypts Your Messages | Build Encryption and Decryption Program

In this lesson, we write a C++ program that reads a message, encrypts it, and then decrypts it.

For example:
If the user inserts: Sam Adam
The output is:

Message Before Encryption is : Sam Adam
Message After Encryption is : Uco"Cfco
Message After Decryption is : Sam Adam

In this video, you will learn:
- How to read a full message from the user using getline
- How to encrypt a message in C++ using a simple encryption key
- How to decrypt the encrypted message and return it back to the original message
- How character conversion works during encryption and decryption
- How developers use the basic idea of encryption and decryption to protect messages
- How this lesson is related to real-world messaging apps and secure communication

This lesson is one of the most important beginner-friendly introductions to message encryption in C++.

In real applications, the idea of encrypting and decrypting data is used to help protect messages while they are transferred between users and systems.

If you are learning C++ problem solving step by step, this lesson will help you understand strings, functions, character manipulation, and the basic idea behind secure communication.

This lesson 17 of Course 4: Problem Solving for Programmers using C++ (part 2) – Beginner Track

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Видео How WhatsApp Encrypts Your Messages | Build Encryption and Decryption Program канала Real Programming Skool (RPS)