Explaining RSA, AES, Key Exchange, Digital Signatures & Hashing for Developers

In this video, we break down the core building blocks of modern encryption — explained in a practical and easy-to-understand way for developers and tech enthusiasts!

You’ll learn:

What a session is and how it keeps communication secure

The difference between RSA (asymmetric) and AES (symmetric) encryption

How key exchange works to securely share encryption keys

What a digital signature is and how it ensures authenticity and data integrity

How hashing protects passwords and verifies message integrity

How to mock and unit test these cryptographic operations in Android/Kotlin

This session connects theory with practical real-world examples — perfect for anyone learning about secure communication, Kotlin cryptography, or Android security development.