NAME

    HTTP::PublicKeyPins - Generate RFC 7469 HTTP Public Key Pin (HPKP)
    header values

VERSION

    Version 0.15

SYNOPSIS

    Make it more difficult for the bad guys to Man-In-The-Middle your users
    TLS sessions

        use HTTP::Headers();
        use HTTP::PublicKeyPins qw( pin_sha256 );
    
        ...
        my $h = HTTP::Headers->new();
        $h->header( 'Public-Key-Pins-Report-Only',
                'pin-sha256="'
              . pin_sha256('/etc/pki/tls/certs/example.pem')
              . '"; pin-sha256="'
              . pin_sha256('/etc/pki/tls/certs/backup.req')
              . '"; report-uri="https://example.com/pkp-report.pl' );

DESCRIPTION

    This module allows the calculation of RFC 7469 HTTP Public Key Pin
    header values. This can be used to verify your TLS session to a remote
    server has not been hit by a Man-In-The-Middle attack OR to instruct
    your users to ignore any TLS sessions to your web service that does not
    use your Public Key

EXPORT

 pin_sha256

    This function accepts the path to a X.509 Certificate
    <http://tools.ietf.org/html/rfc5280>. It will load the public key from
    the certificate and prepare the appropriate value for the pin_sha256
    parameter of the Public-Key-Pins value. This function will also make an
    attempt to read public keys (in PEM (SubjectPublicKeyInfo
    <http://tools.ietf.org/html/rfc5280#section-4.1.2.7> or PKCS#1
    <https://tools.ietf.org/html/rfc2437>) or DER format), private keys (in
    PEM PKCS#1 or DER format) and PKCS#10 Certificate Requests
    <https://tools.ietf.org/html/rfc2986> in PEM or DER format.

SUBROUTINES/METHODS

    None. This module only has the one exported function.

DIAGNOSTICS

    Failed to open %s for reading

      Failed to open the supplied X.509 Certificate, PKCS10 Certificate
      Request, Private or Public Key file

    Failed to read from %s

      Failed to read from the X.509 Certificate, PKCS10 Certificate
      Request, Private or Public Key file

    %s is not an X.509 Certificate, PKCS10 Certificate Request, Private or
    Public Key

      The supplied input file does not look like X.509 Certificate File,
      PKCS10 Certificate Request, Private or Public Key. These files may be
      encoded in PEM or DER format. A PEM encoded X.509 Certificate file
      has the following header

        -----BEGIN CERTIFICATE-----

      A PEM encoded PKCS#10 Certificate Request has the following header

        -----BEGIN CERTIFICATE REQUEST-----

      A PEM encoded PKCS#1 Public Key has the following header

        -----BEGIN RSA PUBLIC KEY-----

      A PEM encoded PKCS#1 Private Key has the following header

        -----BEGIN RSA PRIVATE KEY-----

      A PEM encoded SubjectPublicKeyInfo Public Key has the following
      header

        -----BEGIN PUBLIC KEY-----

CONFIGURATION AND ENVIRONMENT

    HTTP::PublicKeyPins requires no configuration files or environment
    variables.

DEPENDENCIES

    HTTP::PublicKeyPins requires the following non-core modules

      Convert::ASN1
      Crypt::PKCS10
      Crypt::OpenSSL::RSA
      Crypt::OpenSSL::X509
      Digest
     

INCOMPATIBILITIES

    None known.

SEE ALSO

    RFC 7469 - Public Key Pinning Extension for HTTP
    <http://tools.ietf.org/html/rfc7469>

    X.509 Certificate <http://tools.ietf.org/html/rfc5280>

    PKCS#1 <https://tools.ietf.org/html/rfc2437>

    PKCS#10 <https://tools.ietf.org/html/rfc2986>

AUTHOR

    David Dick, <ddick at cpan.org>

BUGS AND LIMITATIONS

    Please report any bugs or feature requests to bug-http-publickeypins at
    rt.cpan.org, or through the web interface at
    http://rt.cpan.org/NoAuth/ReportBug.html?Queue=HTTP-PublicKeyPins. I
    will be notified, and then you'll automatically be notified of progress
    on your bug as I make changes.

SUPPORT

    You can find documentation for this module with the perldoc command.

        perldoc HTTP::PublicKeyPins

    You can also look for information at:

      * RT: CPAN's request tracker (report bugs here)

      http://rt.cpan.org/NoAuth/Bugs.html?Dist=HTTP-PublicKeyPins

      * AnnoCPAN: Annotated CPAN documentation

      http://annocpan.org/dist/HTTP-PublicKeyPins

      * CPAN Ratings

      http://cpanratings.perl.org/d/HTTP-PublicKeyPins

      * Search CPAN

      http://search.cpan.org/dist/HTTP-PublicKeyPins/

LICENSE AND COPYRIGHT

    Copyright 2015 David Dick.

    This module is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself. This program is distributed in the
    hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
    implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
    PURPOSE.