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}}
License and Disclaimer
The content on this page is copyright © 2014—present the tldr-pages team and contributors.This page is used with permission under Creative Commons Attribution 4.0 International License.
While we do attempt to make sure content is accurate, there isn't a warranty of any kind.