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