SSL Certificate vs X509 vs PEM
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SSL Certificate vs X.509 vs PEM #
SSL Certificate is X.509, format, and more data.
- SSL is by far the largest use of X.509 certificates, many people use the terms interchangeably.
- They’re not the same however; a “SSL Certificate” is a X.509 Certificate with Extended Key Usage: Server Authentication (1.3.6.1.5.5.7.3.1).
Other “common” types of X.509 certs are Client Authentication (1.3.6.1.5.5.7.3.2), Code Signing (1.3.6.1.5.5.7.3.3), and a handful of others are used for various encryption and authentication schemes.