Episode 58 — Cryptography II: Symmetric, Asymmetric, and Hashing
Building on the previous episode, this discussion dives into the main families of cryptographic systems. You’ll learn how symmetric encryption uses a single shared key for speed and simplicity, while asymmetric encryption employs key pairs for scalability and trust. We cover common algorithms—AES, RSA, ECC, and SHA—and how each balances performance, strength, and application fit. The conversation also clarifies how hashing differs from encryption by providing integrity rather than secrecy, and why collisions or weak digests can undermine digital signatures and verification systems.
Listeners will also explore how hybrid encryption models combine the best of both worlds—using asymmetric keys to exchange symmetric session keys securely. Real-world examples illustrate how SSL/TLS, email encryption, and password storage rely on these building blocks. The episode concludes by reinforcing that cryptography is not magic; it’s engineering. Knowing which algorithm, key length, or protocol fits a scenario will not only help you on the GSEC exam but also in designing resilient systems where trust is measurable. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.
