Revocation of digital certificates: CRL, OCSP, OCSP stapling

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 -
https://www.youtube.com/watch?v=TmA2QWSLSPg&list=PLSNNzog5eydtwsdT__t5WtRgvpfMzpTc7

Playlist: Basic Cryptography
https://www.youtube.com/watch?v=vk3py9M2IfE&list=PLSNNzog5eyduN6o4e6AKFHekbH5-37BdV
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Видео Revocation of digital certificates: CRL, OCSP, OCSP stapling канала Sunny Classroom