Cryptography Essentials - A Practical Approach to Real-World Digital Security

This course explains practical cryptographic building blocks used in digital security, including hashing, symmetric and asymmetric cryptography, signatures, and key exchange. It provides a foundation for understanding protocols such as SSL, TLS, IPsec, and SSH.

Syllabus

Cryptography Essentials - Series Intro
Hashing and Hashing Algorithms - md5 sha1 sha256 sha2 sha3 - Cryptography Essentials
Understanding Secret Keys: A Simple Explanation
Symmetric Cryptography is a category
Symmetric Encryption - AES ChaCha20 3DES RC4 DES - Cryptography Essentials
MAC / HMAC - Message Authentication Code / Hash Bashed Message Authentication Codes
PRFs explained: Transforming Secrets into Infinite Keys - Pseudo Random Functions
A better definition of Asymmetric Cryptography
RSA & Asymmetric Encryption - Cryptography Essentials
Signatures - What and why are they?
RSA Signatures
DSA Signatures
You can't do security without THIS
RSA Key Exchange and Forward Secrecy - Cryptography Essentials
Diffie-Hellman Key Exchange and Forward Secrecy
Elliptic Curve Cryptography in less than 5 minutes