Phase 1 Week 4: X.509 Certificates
- Day 22: ASN.1 and DER Encoding
- Day 23: X.509 Certificate Structure — TBSCertificate
- Day 24: Core Extensions — BasicConstraints, KeyUsage, EKU
- Day 25: SANs, AKI, SKI, and pathLenConstraint
- Day 26: Certificate Chain Validation — RFC 5280 §6
- Day 27: CRL Structure and Distribution
- Day 28: OCSP Protocol — Requests, Responses, Delegated Responders