certcheck - check certificate chain or self-signed

NAME

certcheck - check certificate chain or self-signed

SYNOPSIS

certcheck check cert_base_name
certcheck text  cert_base_name.pub.pem
certcheck txt   cert_base_name.pub.pem
certcheck info  cert_base_name.pub.pem
certcheck version
certcheck help

DESCRIPTION

The certcheck command verifies a certificate. For a certificate signed by a certification authority, the three parts (public, private and chain) are checked with openssl. For a self-signed certificate, it is verified that it works correctly with openssl.

<check>

The subcommand check verify the certificate chain and takes the certificate name base as input. The three certificates (public, private and chain parts) can take the form:

cert_base_name.pub.pem
cert_base_name.key.pem
cert_base_name.chain.pem

or one of theses...

cert_base_name.crt     cert_base_name.cer
cert_base_name.key     cert_base_name.keystore
cert_base_name.bundle  cert_base_name.ca-bundle

In the case of a self-signed certificate, the check command does not search for a certification chain file, but only verifies that the certificate is valid.

Example:

certcheck check cert_base_name

`text` or `txt` or `info`

The text (or txt, info) subcommand returns the main values (lifetime, DNS name...) of the public key. The certificate's name base can also be used as command-line input, in which case the same rules as with check are applied to find the public certificate.

certcheck text  cert_base_name.pub.pem
certcheck txt   cert_base_name.pub.pem
certcheck info  cert_base_name.pub.pem

`version`

The version subcommand returns the version of certcheck.

certcheck version

`help`

The help subcommand returns this help.

certcheck help

AUTHORS

Written by Valentin Hilbig (hilbix https://gist.github.com/hilbix/bde7c02009544faed7a1) and extended by Gabriel Moreau <Gabriel.Moreau@univ-grenoble-alpes.fr>, Grenoble - France

COPYRIGHT

Licence: CC0 (Creative Commons Zero - https://spdx.org/licenses/CC0-1.0)