openssl x509
OpenSSL command to manage X.509 certificates. More information: https://www.openssl.org/docs/manmaster/man1/openssl-x509.html.
- Display certificate information:
openssl x509 -in {{filename.crt}} -noout -text
- Display a certificate's expiration date:
openssl x509 -enddate -noout -in {{filename.pem}}
- Convert a certificate between binary DER encoding and textual PEM encoding:
openssl x509 -inform {{der}} -outform {{pem}} -in {{original_certificate_file}} -out {{converted_certificate_file}}
- Store a certificate's public key in a file:
openssl x509 -in {{certificate_file}} -noout -pubkey -out {{output_file}}
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