PEM, DER, CRT, and CER: X.509 Encodings and Conversions
How to recognize and work with PEM and DER digital certificate files: common file extensions, visual examples, and conversion with OpenSSL.
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Tag: x.509
What Is an X.509 Certificate?
X.509 is a standard format for public key certificates. Each X.509 certificate includes a public key, identifying information, and a digital signature.
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