#!/usr/bin/perl
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
# Yokogawa Electric Corporation.
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# POSSIBILITY OF SUCH DAMAGE.
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# $Id: IKEv2-EN-I-1-1-10-3-A.seq,v 1.4 2008/11/28 10:16:17 doo Exp $
#
################################################################

BEGIN
{
	push(@INC, '..');
}

END {}

use IKEv2;
use strict;



my $remote	= 'common_remote_index';
my $selector	= 'common_selector_index_outbound';



my $session	= undef;
my $ret	= undef;
my $str = undef;
my $ike_sa_init_req_param	= undef;
my $ike_sa_init_resp_param	= undef;
my $ike_auth_req_param	= undef;
my $ike_auth_resp_param	= undef;
my $dh	= undef;
my $material	= undef;
my $child_sa_material = undef;


kLogHTML('<FONT COLOR="#FF0000" SIZE="+1"><U><B>TEST SETUP</B></U></FONT>');

my $tn = 'EN';
my $nut = 'EN';


#------------------------------#
# register IKEv2.pm            #
#------------------------------#
unless(IKEv2initialize($tn, $nut)) {
	IKEv2exitFatal('<FONT COLOR="#ff0000">IKEv2 module initializing failure</FONT>');
}



#---------------------------------#
# switch Support or Not Support   #
#---------------------------------#
unless ($config_pl->{'advanced_support_rsa_digital_signature'}) {
	IKEv2exitNS('Not support ' . "'advanced_support_rsa_digital_signature'");
}



#------------------------------#
# configure TN                 #
#------------------------------#
unless(IKEv2setupTN()) {
	IKEv2exitFatal('<FONT COLOR="#ff0000">TN setup failure</FONT>');
}



#------------------------------#
# configure NUT                #
#------------------------------#
unless(IKEv2setupNUT()) {
	IKEv2exitFatal('<FONT COLOR="#ff0000">NUT setup failure</FONT>');
}



kLogHTML('<FONT COLOR="#FF0000" SIZE="+1"><U><B>TEST PROCEDURE</B></U></FONT>');


#------------------------------#
# prepare session handler      #
#------------------------------#
$session = IKEv2create_session($remote);
unless(defined($session)) {
	IKEv2exitFatal('<FONT COLOR="#ff0000">IKEv2 session creation failure</FONT>');
}



$str  = '<PRE>';
$str .= "    (I)             (R)\n";
$str .= "    NUT             TN1\n";
$str .= "     |               |\n";
$str .= "     |-------------->| IKE_SA_INIT request (HDR, SAi1, KEi, Ni)\n";
$str .= "     |               |\n";
$str .= "     V               V";
$str .= '</PRE>';

kLogHTML($str);



#--------------------------------------#
# invoke IKE_SA_INIT request           #
#--------------------------------------#
unless(IKEv2initiateNUT($selector)) {
	IKEv2exitFatal('<FONT COLOR="#ff0000">NUT initiation failure</FONT>');
}



#--------------------------------------#
# receive IKE_SA_INIT request          #
#--------------------------------------#
$ike_sa_init_req_param = devel_IKEv2receive_IKE_SA_INIT_request($session, $remote);
unless(defined($ike_sa_init_req_param)) {
	kLogHTML(kDump_Common_Error());
	kLogHTML('<FONT COLOR="#ff0000">Can\'t observe IKE_SA_INIT request.</FONT>');
	IKEv2exitFail();
}



$str  = '<PRE>';
$str .= "    (I)             (R)\n";
$str .= "    NUT             TN1\n";
$str .= "     |               |\n";
$str .= "     |<--------------| IKE_SA_INIT response (HDR, SAr1, KEr, Nr)\n";
$str .= "     |               |\n";
$str .= "     V               V";
$str .= '</PRE>';

kLogHTML($str);



#--------------------------------------#
# send IKE_SA_INIT response            #
#--------------------------------------#
$ike_sa_init_resp_param = devel_IKEv2send_IKE_SA_INIT_response($session,
							       $remote,
							       $ike_sa_init_req_param);
unless(defined($ike_sa_init_resp_param)) {
	kLogHTML(kDump_Common_Error());
	IKEv2exitFatal('<FONT COLOR="#ff0000">Can\'t send IKE_SA_INIT response.</FONT>');
}



#--------------------------------------#
# generate keying material             #
#--------------------------------------#
$material = devel_IKEv2gen_keymat(0, $ike_sa_init_req_param, $ike_sa_init_resp_param);
unless(defined($material)) {
	kLogHTML(kDump_Common_Error());
	IKEv2exitFatal('<FONT COLOR="#ff0000">Can\'t generate keying material.</FONT>');
}



#--------------------------------------#
# prepare IKE_AUTH request             #
#--------------------------------------#
my $certreq_payload =
{       # Certificate Request Payload
	'self'		=> 'CERTREQ',	# *** MUST BE HERE ***
	'nexttype'	=> undef,	# Next Payload
	'critical'	=> '0',		# Critical
	'reserved'	=> '0',		# RESERVED
	'length'	=> '5',
	'cert_encoding'	=> 'X.509 Certificate - Signature',
	'cert_data'	=> undef,
};
my $common_ike_auth_req = $exp_ike_auth_req->{'common_remote_index'};
my @local_ike_auth_req = @{$common_ike_auth_req};
foreach my $payload1 (@local_ike_auth_req) {
	if ($payload1->{'self'} eq 'E') {
		# insert CERT and modify AUTH
		for (my $i = 0; $i < scalar(@{$payload1->{'innerPayloads'}}); $i++) {
			my $inner = ${$payload1->{'innerPayloads'}}[$i];

			if ($inner->{'self'} eq 'IDi') {
				splice(@{$payload1->{'innerPayloads'}}, $i+1, 0, $certreq_payload);
			}
			if ($inner->{'self'} eq 'AUTH') {
				$inner->{'method'} = 'RSA_DS';
			}
		}

		#set correct nexttype
		$payload1->{'innerType'} = @{$payload1->{'innerPayloads'}}[0]->{'self'};
		for (my $i = 0; $i < scalar(@{$payload1->{'innerPayloads'}}); $i++) {
			my $inner = ${$payload1->{'innerPayloads'}}[$i];
			my $next = ${$payload1->{'innerPayloads'}}[$i+1];
			if (defined($next)) {
				$inner->{'nexttype'} = $next->{'self'};
			}
			else {
				$inner->{'nexttype'} = '0';
			}
		}
	}
}
my $index = 'sending_cert.1';
$exp_ike_auth_req->{$index} = \@local_ike_auth_req;


#--------------------------------------#
# receive IKE_AUTH request             #
#--------------------------------------#
$str  = '<PRE>';
$str .= "    (I)             (R)\n";
$str .= "    NUT             TN1\n";
$str .= "     |               |\n";
$str .= "     |-------------->| IKE_AUTH request (HDR, SK {IDi, CERTREQ, AUTH, N(USE_TRANSPORT_MODE), SAi2, TSi, TSr})\n";
$str .= "     |               |\n";
$str .= "     V               V";
$str .= '</PRE>';

kLogHTML($str);



$ike_auth_req_param = devel_IKEv2receive_IKE_AUTH_request($session,
							  $index,
							  $ike_sa_init_req_param,
							  $ike_sa_init_resp_param,
							  $material);
unless(defined($ike_auth_req_param)) {
	kLogHTML(kDump_Common_Error());
	kLogHTML('<FONT COLOR="#ff0000">Can\'t observe IKE_AUTH request.</FONT>');
	IKEv2exitFail();
}



#--------------------------------------#
# prepare IKE_AUTH response            #
#--------------------------------------#
my $cert_data = der2hexstr('./cert/TNcert.der');
my $cert_payload =
{	# Certificate Payload
	'self'		=> 'CERT',	# *** MUST BE HERE ***
	'nexttype'	=> 'AUTH',	# specify CERT
	'critical'	=> '0',		# Critical
	'reserved'	=> '0',		# RESERVED
	'length'	=> undef,
	'cert_encoding'	=> 'X.509 Certificate - Signature',
	'cert_data'	=> $cert_data,
};

my $common_ike_auth_resp = $gen_ike_auth_resp->{'common_remote_index'};
my @local_ike_auth_resp = @{$common_ike_auth_resp};

for (my $i = 0; $i < scalar(@local_ike_auth_resp); $i++) {
	my $payload = $local_ike_auth_resp[$i];

	if ($payload->{'self'} eq 'IDi') {
		splice(@local_ike_auth_resp, $i+1, 0, $cert_payload);
		$payload->{'nexttype'} = 'CERT';
		next;
	}
	if ($payload->{'self'} eq 'AUTH') {
		$payload->{'method'} = 'RSA_DS';
		next;
	}
}
$index = 'sending_cert.2';
$gen_ike_auth_resp->{$index} = \@local_ike_auth_resp;


#--------------------------------------#
# send IKE_AUTH response               #
#--------------------------------------#
$str  = '<PRE>';
$str .= "    (I)             (R)\n";
$str .= "    NUT             TN1\n";
$str .= "     |               |\n";
$str .= "     |<--------------| IKE_AUTH response (HDR, SK {IDr, CERT, AUTH, N(USE_TRANSPORT_MODE), SAr2, TSi, TSr})\n";
$str .= "     |               |\n";
$str .= "     V               V";
$str .= '</PRE>';

kLogHTML($str);



$ike_auth_resp_param = devel_IKEv2send_IKE_AUTH_response($session,
							 $index,
							 $ike_sa_init_req_param,
							 $ike_sa_init_resp_param,
							 $material);
unless (defined($ike_auth_resp_param)) {
	kLogHTML(kDump_Common_Error());
	IKEv2exitFatal('<FONT COLOR="#ff0000">Can\'t send IKE_AUTH response.</FONT>');
}



#--------------------------------------#
# generate keying material (CHILD_SA)  #
#--------------------------------------#
$child_sa_material = devel_IKEv2gen_child_sa_keymat(1,	# Initial Exchanges
						    $material,
						    $ike_sa_init_req_param,
						    $ike_sa_init_resp_param,
						    $ike_auth_req_param,
						    $ike_auth_resp_param);



#--------------------------------------#
# set keying material                  #
#--------------------------------------#
$ret = IKEv2set_child_sa_keymat(0, $child_sa_material, $ike_auth_req_param, $ike_auth_resp_param);
unless($ret) {
	kLogHTML(kDump_Common_Error());
	IKEv2exitFatal('<FONT COLOR="#ff0000">Can\'t set keying material.</FONT>');
}



#--------------------------------------#
# prepare ICMP session handler         #
#--------------------------------------#
my $icmp_session = ICMPcreate_session('TN1sendtoNUT');
unless(defined($icmp_session)) {
	IKEv2exitFatal('<FONT COLOR="#ff0000">ICMP session creation failure</FONT>');
}



#--------------------------------------#
# send Echo Request                    #
# receive Echo Reply                   #
#--------------------------------------#
$ret = ICMPexchange($tn, $nut, $icmp_session);
if ($ret == -1) {
	kLogHTML(kDump_Common_Error());
	IKEv2exitFatal('<FONT COLOR="#ff0000">Can\'t send ICMP packet.</FONT>');
} elsif ($ret == 0) {
	my $strerror = kDump_Common_Error();
	kLogHTML('<FONT COLOR="#ff0000">Can\'t observe ICMP packet.</FONT>');
	IKEv2exitFail();
}



#--------------------------------------#
# exit with cleanup                    #
#--------------------------------------#
IKEv2exitPass();



#
# perldoc
#
########################################################################
__END__

=head1 Title

  Test IKEv2.EN.I.1.1.10.3:  RSA Digital Signature
  Part A: (ADVANCED)

=head1 Purpose

  To verify an IKEv2 device authenticates the corresponding node by RSA Digital Signature.

=head1 References

  [RFC 4306] - Sections 1.2 and 3.7

=head1 Test Setup

  * Network Topology
     Connect the devices according to the Common Topology.
  * Configuration
     In each part, configure the devices according to the following IKE peer configuration.

=begin html

<BLOCKQUOTE>
<PRE>
<TABLE BORDER>
<TR>
<TD></TD>
<TD>Authentication Method</TD>
</TR>
<TR>
<TD>Remote</TD>
<TD>X.509 Certificate - Signature</TD>
</TR>
</TABLE> 
</PRE>
</BLOCKQUOTE>

=end html

  * Pre-Sequence and Cleanup Sequence
     IKEv2 on the NUT is disabled after each part.

=head1 Procedure

=begin html
<BLOCKQUOTE>
<PRE>

   NUT                  TN1
(End-Node)           (End-Node)
    |                    |
    |------------------->| IKE_SA_INIT request (HDR, SAi1, KEi, Ni)
    |                    | (Judgement #1)
    |<-------------------| IKE_SA_INIT Response (HDR, SAr1, KEr, Nr)
    |                    | (Packet #1)
    |                    |
    |------------------->| IKE_AUTH request (HDR, SK {IDi, CERTREQ, AUTH, N, SAi2, TSi, TSr})
    |                    | (Judgement #2)
    |<-------------------| IKE_AUTH Response (HDR, SK {IDr, iCERT, AUTH, N, SAr2, TSi, TSr})
    |                    | (Packet #2)
    |                    |  
    |<-------------------| IPSec {Echo Request}
    |                    | (Packet #3)
    |------------------->| IPSec {Echo Reply}
    |                    | (Judgement #3)
    |                    |
    V                    V

<br>
 N+: USE_TRANSPORT_MODE

</PRE>
</BLOCKQUOTE>

<BLOCKQUOTE>  
<TABLE BORDER>
<TR>
<TD><TT>Packet #1</TT></TD>
<TD><TT>See Common Packet #2</TT></TD>
</TR>
<TR>
<TD><TT>Packet #2</TT></TD>
<TD><TT>See below</TT></TD>
</TR>
<TR>
<TD><TT>Packet #3</TT></TD>
<TD><TT>See Common Packet #19</TT></TD>
</TR>
</TABLE>
</BLOCKQUOTE>
<br>

<BLOCKQUOTE>
Packet #2: IKE_AUTH response
<TABLE BORDER>
<TR>
<TD>IPv6 Header</TD>
<TD colspan="2">Same as Common Packet #4</TD>
</TR>
<TR>
<TD>UDP Header</TD>
<TD colspan="2">Same as Common Packet #4</TD>
</TR>
<TR>
<TD>IKEv2 Header</TD>
<TD colspan="2">Same as Common Packet #4</TD>
</TR>
<TR>
<TD>E Payloa</TD>
<TD colspan="2">Same as Common Packet #4</TD>
</TR>
<TR>
<TD rowspan="2">IDr Payload</TD>
<TD>Next Payload</TD>
<TD>37 (CERT)</TD>
</TR>
<TR>
<TD colspan="2">Other fields are same as the Common Packet #4</TD>
</TR>
<TR>
<TD>CERT Payload</TD>
<TD colspan="2">See below</TD>
</TR>
<TR>
<TD>AUTH Payload</TD>
<TD colspan="2">Same as Common Packet #4</TD>
</TR>
<TR>
<TD>N Payload</TD>
<TD colspan="2">Same as Common Packet #4</TD>
</TR>
<TR>
<TD>SA Payload</TD>
<TD colspan="2">Same as Common Packet #4</TD>
</TR>
<TR>
<TD>TSi Payload</TD>
<TD colspan="2">Same as Common Packet #4</TD>
</TR>
<TR>
<TD>TSr Payload</TD>
<TD colspan="2">Same as Common Packet #4</TD>
</TR>
</TABLE>
</BLOCKQUOTE>

<BLOCKQUOTE>
<TABLE BORDER>
<TR>
<TD rowspan="6">CERT Payload</TD>
<TD>Next Payload</TD>
<TD>39 (AUTH)</TD>
</TR>
<TR>
<TD>Critical</TD>
<TD>0</TD>
</TR>
<TR>
<TD>Reserved</TD>
<TD>0</TD>
</TR>
<TR>
<TD>Payload Length</TD>
<TD>Any</TD>
</TR>
<TR>
<TD>Certificate Encoding</TD>
<TD>4 (X.509 Certificate - Signature)</TD>
</TR>
<TR>
<TD>Certificate Data</TD>
<TD>TN1's X.509 Certificate</TD>
</TR>
</TABLE>
</BLOCKQUOTE>

=end html

  Part A: (ADVANCED)
     1. NUT starts to negotiate with TN1 by sending IKE_SA_INIT request.
     2. Observe the messages transmitted on Link A.
     3. TN1 responds with an IKE_SA_INIT response to the NUT.
     4. Observe the messages transmitted on Link A.
     5. After reception of IKE_AUTH request from the NUT, TN1 responds with an IKE_AUTH
         response including IDr payload as describe above to the NUT
     6. TN1 transmits an Echo Request with IPsec ESP using corresponding algorithms to NUT.
     7. Observe the messages transmitted on Link A.


=head1 Observable Results

  Part A
       Step 2: Judgment #1
       The NUT transmits an IKE_SA_INIT request including "ENCR_3DES",
       "PRF_HMAC_SHA1", "AUTH_HMAC_SHA1_96" and "D-H group 2" as proposed
       algorithms.

       Step 4: Judgment #2
       The NUT transmits an IKE_AUTH request with a CERTREQ payload which contains 4
       (X.509 Certificate - Signature) as Certificate Encoding.

       Step 7: Judgment #3
       The NUT transmits an Echo Reply with IPsec ESP using ENCR_3DES an
       AUTH_HMAC_SHA1_96.


=head1 Possible Problems

  * None

=cut

