#cryptography
2 articles
01
·Security·★ MEMBER·10 min read
TLS from Scratch — Key Exchange and Certificates
Behind the padlock icon, your browser pulls off something strange: it agrees on a secret with a stranger, over a wire everyone can read. This walks through key exchange, certificates, and the TLS 1.3 handshake from zero, ending with why a man in the middle cannot win.
02
·Security·FREE·13 min read
Cryptography from Scratch — Symmetric Keys, Public Keys, and Hashes
Cryptography isn't about producing unreadable text — it's about engineering an extreme gap in effort between people who hold the key and people who don't. We build up the three tools (symmetric, public-key, hashing) from zero, explain why factoring shows up at all, what a signature actually promises, and how every widely deployed cipher has eventually broken.