✨ Please consider supporting my channel! ✨ Every bit helps—whether it’s $15, $10, or even $5. You can make a donation via this site: Digital certificate are normally expired after one year, but some situations might cause a certificate to be revoked before expiration. How does a client check the revocation status? Here I introduce three methods: CRL, OCSP, & OCSP stapling. What are they? How do they work? You would find answers in this video. Playlist: Advanced Cryptography - Playlist: Basic Cryptography Please subscribe to my channel! Please leave comments or questions! Many thanks, Sunny Classroom