Digital Certificates

Question 1

OCSP

Answer 1

OCSP (Online Certificate Status Protocol)

A system that is the fastest on-demand way to check if an SSL/TLS certificate is valid or revoked in real time, ensuring secure communications.

Question 2

CSR

Answer 2

CSR (Certificate Signing Request)

A file containing a request to a Certificate Authority (CA) to issue a digital certificate. It includes the public key and organisation details.

Question 3

Wildcard Certificate

Answer 3

A type of digital certificate that can be used to secure multiple subdomains within a primary domain.

Question 4

Subject Alternative Name (SAN) Certificate

Answer 4

A digital certificate type that allows to secure multiple domain names or subdomains with a single certificate.

Question 5

OID

Answer 5

OID (Object Identifier)

A unique identifier used in certificates and security protocols to label specific objects, such as encryption algorithms or certificate policies. Think of it like a barcode for digital security settings.