Mozilla::CA(3) User Contributed Perl Documentation Mozilla::CA(3)

# [NAME](#NAME)

Mozilla::CA - Mozilla's CA cert bundle in PEM format

# [SYNOPSIS](#SYNOPSIS)

```
    use IO::Socket::SSL;
    use Mozilla::CA;
    my $host = "www.paypal.com";
    my $client = IO::Socket::SSL->new(
        PeerHost => "$host:443",
        SSL_verify_mode => 0x02,
        SSL_ca_file => Mozilla::CA::SSL_ca_file(),
    )
        || die "Can't connect: $@";
    $client->verify_hostname($host, "http")
        || die "hostname verification failure";
```

# [DESCRIPTION](#DESCRIPTION)

Mozilla::CA provides a copy of Mozilla's bundle of Certificate Authority certificates in a form that can be consumed by modules and libraries based on OpenSSL.

The module provide a single function:

[**SSL\_ca\_file()**](#SSL_ca_file%28%29)

Returns the absolute path to the Mozilla's CA cert bundle PEM file.

# [SEE ALSO](#SEE_ALSO)

<http://curl.haxx.se/docs/caextract.html>

# [LICENSE](#LICENSE)

For the bundled Mozilla CA PEM file the following applies:

This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.

The Mozilla::CA distribution itself is available under the same license.

2026-10-26 perl v5.44.0

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Document: Mozilla::CA(3pm) from perl-mozilla-ca 20261020-r2 (Chainguard OS)
Source: https://github.com/libwww-perl/Mozilla-CA