package Net::OAuth::SignatureMethod::HMAC_SHA256;
use warnings;
use strict;
use Digest::SHA  ();
use MIME::Base64 ();

sub sign {
    my $self = shift;
    my $request = shift;
    my $hmac_digest = Digest::SHA::hmac_sha256(
        $request->signature_base_string, $request->signature_key
    );
    return MIME::Base64::encode_base64($hmac_digest, '');
}

sub verify {
    my $self = shift;
    my $request = shift;
    return $request->signature eq $self->sign($request);
}

=head1 NAME

Net::OAuth::SignatureMethod::HMAC_SHA256 - HMAC_SHA256 Signature Method for OAuth protocol

=head1 SEE ALSO

L<Net::OAuth>, L<http://oauth.net>

=head1 AUTHOR

Keith Grennan, C<< <kgrennan at cpan.org> >>

=head1 COPYRIGHT & LICENSE

Copyright 2012 Keith Grennan, all rights reserved.

This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.

=cut

1;