/usr/share/doc/libweb-id-perl/examples/certificate-parsing.pl is in libweb-id-perl 1.922-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | use 5.010;
use lib "../lib";
use lib "lib";
use Data::Dumper;
#use Moose ();
use Web::ID::Certificate;
use Web::ID::SAN;
use Web::ID::SAN::Email;
use Web::ID::SAN::URI;
my $cert = Web::ID::Certificate->new( pem => <<PEM );
-----BEGIN CERTIFICATE-----
MIIDwjCCAyugAwIBAgIBADANBgkqhkiG9w0BAQUFADCBiDELMAkGA1UEBhMCR0Ix
FDASBgNVBAgTC0Vhc3QgU3Vzc2V4MQ4wDAYDVQQHEwVMZXdlczEVMBMGA1UEChMM
VG9ieSBJbmtzdGVyMRUwEwYDVQQDEwxUb2J5IElua3N0ZXIxJTAjBgkqhkiG9w0B
CQEWFm1haWxAdG9ieWlua3N0ZXIuY28udWswHhcNMDkwNjIyMTE0OTQ1WhcNMTMw
NjIxMTE0OTQ1WjCBiDELMAkGA1UEBhMCR0IxFDASBgNVBAgTC0Vhc3QgU3Vzc2V4
MQ4wDAYDVQQHEwVMZXdlczEVMBMGA1UEChMMVG9ieSBJbmtzdGVyMRUwEwYDVQQD
EwxUb2J5IElua3N0ZXIxJTAjBgkqhkiG9w0BCQEWFm1haWxAdG9ieWlua3N0ZXIu
Y28udWswgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBANCO9ePkHf7wd12IV4pk
dWb6sMiaYwVe5epncwwARrxIoRfkwXrBkvV+bE9jjTQDODYNeLIPinnZEAfeIPEs
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LyNpMA0GCSqGSIb3DQEBBQUAA4GBADrTzhHHsx2kox2rl1LLQvr7lCL0QJYoC/5B
NwTOr2DmtRsMbGLJsBoXylOmcBmKt6jwEjt8ZtpordY5WuCHdhQnQMPHVq7QedFN
67BP9knqFu7LV9dmqn12k0/I4b34/A0erLHTVzlj/E91OkASTf3M1ipGMcC8H97C
xQX4IrD3
-----END CERTIFICATE-----
PEM
local $Data::Dumper::Terse = 1;
say "Cert dates: ", $cert->not_before, " -- ", $cert->not_after;
say "Exponent: ", $cert->exponent;
say "Modulus: ", $cert->modulus;
say "Subject alt names: ", Dumper($cert->subject_alt_names);
say "Fingerprint: ", $cert->fingerprint;
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