Cryptography is the backbone of digital security. Every time a user logs into a banking application, sends an encrypted email, or signs a cryptocurrency transaction, cryptographic algorithms are working behind the scenes to protect data from unauthorised access. At the foundation of these systems are two distinct approaches: symmetric cryptography and asymmetric cryptography. Understanding how these methods differ, and when each is most appropriate, is essential for anyone in cybersecurity, fintech, or blockchain. This guide breaks down the mechanics, strengths, limitations, and applications of both encryption types, ... (full story)