certverify

command
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Published: Aug 28, 2023 License: BSD-2-Clause, ISC Imports: 10 Imported by: 0

README

certverify

This is a small utility to verify a TLS X.509 certificate. It returns
0 on success; on error, it prints the error and returns with exit code 1.
It does not check for revocations (though this is a planned feature),
and it does not check the hostname (it deals only in certificate files).

[ Usage ]
        certverify [-ca bundle] [-f] [-i bundle] [-r] [-v] certificate

[ Flags ]
        -ca bundle      Specify the path to the CA certificate bundle
                        to use.
        -f              Force the use of the intermediate bundle, ignoring
                        any intermediates bundled with the certificate.
        -i bundle       Specify the path to the intermediate certificate
                        bundle to use.
        -r              Print revocation and expiry information.
        -v              Print extra information during the program's run.
                        If the certificate validates, also prints 'OK'.

[ Examples ]

To verify the 'www.pem' certificate against the system roots:

        $ certverify www.pem
        $ echo $?
        0

To verify the 'www.pem' certificate against the 'ca-cert.pem' CA
certificate bundle, and seeing a mismatch:

        $ certverify -ca ca-cert.pem www.pem
        Verification failed: x509: certificate signed by unknown authority
        $ echo $?
        1

Using the stealchain (../stealchain) util, print revocation and expiry
information for google.com:

        $ stealchain google.com
        [+] wrote google.com.pem.
        $ certverify -r google.com.pem 
        certificate expires in 53d.

Documentation

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