X.509 Certificates
X.509 Certificates are a standard format for public key certificates, which are used in various internet protocols, including SSL/TLS, for secure communication. An X.509 certificate binds a public key to an entity (such as a person, organization, or device) and is issued by a trusted Certificate Authority (CA). These certificates authenticate the identity of entities and establish encrypted communication channels, playing a crucial role in internet security by enabling trust and confidentiality in digital transactions.