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26 lines
736 B
Plaintext
26 lines
736 B
Plaintext
---
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syntax: markdown
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tags: [tldr, common]
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source: https://github.com/tldr-pages/tldr.git
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---
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# openssl x509
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> OpenSSL command to manage X.509 certificates.
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> More information: <https://docs.openssl.org/master/man1/openssl-x509/>.
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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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