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How to view a TLS certificate from the command line?

+2
−1

I have a TLS certificate, let's say codidact.pem (downloaded as in https://linux.codidact.com/posts/292251/292257#answer-292257). But when I view it the file it appears to be base64 encoded:

$ cat codidact.pem
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

How can I see the contents of the certificate, from the command line?

cli tls
posted 3 months ago
3mo ago
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matthewsnyder‭
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Unclear (1 comment)

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−0

You can use openssl:

openssl x509 -in server.crt -text
posted 3 months ago
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GeraldS‭
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Worked for Iizuki‭

Certtool from GnuTLS can do this:

certtool --certificate-info --infile=server.crt

posted 3 months ago
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matthewsnyder‭
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Works for me (1 comment)

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