Phase: 2 — Networking Foundations + L4 Goal: Build TLS from the certificate level up. Generate certs in Go, enforce mTLS, implement HMAC request signing, and build the crypto primitives that your API security gateway uses.
Background in this wiki: HTTPS guide Ch 4 (TLS 1.3) and Ch 16 (certificate operations); TCP/IP guide Ch 29 (
tlsinspect) and Ch 56 (certreload: zero-downtime rotation); Go guide §35 and §50 (mTLS).