Technology • Cybersecurity

How Cryptography Protects Online Banking

Summary

Online banking uses asymmetric RSA/ECC keys during TLS handshakes to establish secure sessions, encrypts financial payloads with AES-256, and signs transactions digitally to guarantee non-repudiation.

Core Principles

Asymmetric key exchanges, TLS handshakes, AES-256 data-at-rest encryption, and digital signatures.

Understanding this topic provides critical context for software design, runtime execution, and computational trade-offs.

Why It Matters in Computing

In modern software systems, abstractions exist to shield developers from lower-level mechanics. However, when systems scale, encounter latency spikes, or experience production failures, understanding these fundamentals allows engineers to diagnose root causes and make optimal architectural choices.

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