121 lines
2.3 KiB
Perl
121 lines
2.3 KiB
Perl
package Mail::DKIM::Algorithm::rsa_sha256;
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use strict;
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use warnings;
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our $VERSION = '1.20230212'; # VERSION
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# ABSTRACT: rsa sha256 algorithm class
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# Copyright 2005-2006 Messiah College. All rights reserved.
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# Jason Long <jlong@messiah.edu>
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# Copyright (c) 2004 Anthony D. Urso. All rights reserved.
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# This program is free software; you can redistribute it and/or
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# modify it under the same terms as Perl itself.
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use base 'Mail::DKIM::Algorithm::Base';
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use Carp;
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use MIME::Base64;
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use Digest::SHA;
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sub init_digests {
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my $self = shift;
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# initialize a SHA-256 Digest
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$self->{header_digest} = new Digest::SHA(256);
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$self->{body_digest} = new Digest::SHA(256);
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}
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sub sign {
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my $self = shift;
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croak 'wrong number of arguments' unless ( @_ == 1 );
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my ($private_key) = @_;
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my $digest = $self->{header_digest}->digest;
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my $signature = $private_key->sign_digest( 'SHA-256', $digest );
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return encode_base64( $signature, '' );
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}
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sub verify {
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my $self = shift;
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croak 'wrong number of arguments' unless ( @_ == 0 );
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my $base64 = $self->signature->data;
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my $public_key = $self->signature->get_public_key;
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my $digest = $self->{header_digest}->digest;
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my $sig = decode_base64($base64);
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return unless $public_key->verify_digest( 'SHA-256', $digest, $sig );
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return $self->check_body_hash;
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}
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sub wants_pre_signature_headers {
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return 1;
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}
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1;
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__END__
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=pod
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=encoding UTF-8
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=head1 NAME
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Mail::DKIM::Algorithm::rsa_sha256 - rsa sha256 algorithm class
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=head1 VERSION
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version 1.20230212
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=head1 AUTHORS
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=over 4
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=item *
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Jason Long <jason@long.name>
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=item *
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Marc Bradshaw <marc@marcbradshaw.net>
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=item *
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Bron Gondwana <brong@fastmailteam.com> (ARC)
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=back
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=head1 THANKS
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Work on ensuring that this module passes the ARC test suite was
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generously sponsored by Valimail (https://www.valimail.com/)
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=head1 COPYRIGHT AND LICENSE
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=over 4
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=item *
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Copyright (C) 2013 by Messiah College
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=item *
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Copyright (C) 2010 by Jason Long
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=item *
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Copyright (C) 2017 by Standcore LLC
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=item *
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Copyright (C) 2020 by FastMail Pty Ltd
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=back
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This library is free software; you can redistribute it and/or modify
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it under the same terms as Perl itself, either Perl version 5.8.6 or,
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at your option, any later version of Perl 5 you may have available.
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=cut
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