openssl/util/perl/TLSProxy/CertificateVerify.pm

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2023-05-09 22:08:48 +00:00
# Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
use strict;
package TLSProxy::CertificateVerify;
use vars '@ISA';
push @ISA, 'TLSProxy::Message';
sub new
{
my $class = shift;
my ($server,
$data,
$records,
$startoffset,
$message_frag_lens) = @_;
my $self = $class->SUPER::new(
$server,
TLSProxy::Message::MT_CERTIFICATE_VERIFY,
$data,
$records,
$startoffset,
$message_frag_lens);
$self->{sigalg} = -1;
$self->{signature} = "";
return $self;
}
sub parse
{
my $self = shift;
my $sigalg = -1;
my $remdata = $self->data;
my $record = ${$self->records}[0];
if (TLSProxy::Proxy->is_tls13()
|| $record->version() == TLSProxy::Record::VERS_TLS_1_2) {
$sigalg = unpack('n', $remdata);
$remdata = substr($remdata, 2);
}
my $siglen = unpack('n', substr($remdata, 0, 2));
my $sig = substr($remdata, 2);
die "Invalid CertificateVerify signature length" if length($sig) != $siglen;
print " SigAlg:".$sigalg."\n";
print " Signature Len:".$siglen."\n";
$self->sigalg($sigalg);
$self->signature($sig);
}
#Reconstruct the on-the-wire message data following changes
sub set_message_contents
{
my $self = shift;
my $data = "";
my $sig = $self->signature();
my $olddata = $self->data();
$data .= pack("n", $self->sigalg()) if ($self->sigalg() != -1);
$data .= pack("n", length($sig));
$data .= $sig;
$self->data($data);
}
#Read/write accessors
sub sigalg
{
my $self = shift;
if (@_) {
$self->{sigalg} = shift;
}
return $self->{sigalg};
}
sub signature
{
my $self = shift;
if (@_) {
$self->{signature} = shift;
}
return $self->{signature};
}
1;