testing: added ikev2/alg-chacha20poly1305 scenario

testing/tests/ikev2/alg-chacha20poly1305/description.txt

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+Roadwarrior <b>carol</b> proposes to gateway <b>moon</b> the cipher suite
+<b>CHACHA20_POLY1305_256</b> both for IKE and ESP by defining
+<b>ike=chacha20poly1305-prfsha256-ntru256</b> and
+<b>esp=chacha20poly1305-ntru256</b> in ipsec.conf, respectively.
+A ping from <b>carol</b> to <b>alice</b> successfully checks the established tunnel.

testing/tests/ikev2/alg-chacha20poly1305/evaltest.dat

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+moon:: ipsec status 2> /dev/null::rw.*ESTABLISHED.*moon.strongswan.org.*[email protected]::YES
+carol::ipsec status 2> /dev/null::home.*ESTABLISHED.*[email protected].*moon.strongswan.org::YES
+moon:: ipsec status 2> /dev/null::rw.*INSTALLED, TUNNEL::YES
+carol::ipsec status 2> /dev/null::home.*INSTALLED, TUNNEL::YES
+carol::ping -c 1 -s 120 -p deadbeef PH_IP_ALICE::128 bytes from PH_IP_ALICE: icmp_req=1::YES
+moon:: ipsec statusall 2> /dev/null::IKE proposal: CHACHA20_POLY1305_256::YES
+carol::ipsec statusall 2> /dev/null::IKE proposal: CHACHA20_POLY1305_256::YES
+moon:: ipsec statusall 2> /dev/null::CHACHA20_POLY1305_256,::YES
+carol::ipsec statusall 2> /dev/null::CHACHA20_POLY1305_256,::YES
+moon:: ip xfrm state::aead rfc7539esp(chacha20,poly1305)::YES
+carol::ip xfrm state::aead rfc7539esp(chacha20,poly1305)::YES
+moon::tcpdump::IP carol.strongswan.org > moon.strongswan.org: ESP.*length 184::YES
+moon::tcpdump::IP moon.strongswan.org > carol.strongswan.org: ESP.*length 184::YES

testing/tests/ikev2/alg-chacha20poly1305/hosts/carol/etc/ipsec.conf

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+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	ike=chacha20poly1305-prfsha256-ntru256!
+	esp=chacha20poly1305-ntru256!
+
+conn home
+	left=PH_IP_CAROL
+	leftfirewall=yes
+	leftcert=carolCert.pem
+	[email protected]
+	right=PH_IP_MOON
+	rightsubnet=10.1.0.0/16
+	[email protected]
+	auto=add 

testing/tests/ikev2/alg-chacha20poly1305/hosts/carol/etc/strongswan.conf

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+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = chapoly aes des sha1 sha2 md5 pem pkcs1 gmp ntru random nonce x509 curl revocation hmac stroke kernel-netlink socket-default updown
+
+  send_vendor_id = yes
+}

testing/tests/ikev2/alg-chacha20poly1305/hosts/moon/etc/ipsec.conf

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+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+        ike=chacha20poly1305-prfsha256-ntru256!
+        esp=chacha20poly1305-ntru256!
+
+conn rw
+	left=PH_IP_MOON
+	leftfirewall=yes
+	leftcert=moonCert.pem
+	[email protected]
+	leftsubnet=10.1.0.0/16
+	right=%any
+	auto=add

testing/tests/ikev2/alg-chacha20poly1305/hosts/moon/etc/strongswan.conf

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+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = chapoly aes des sha1 sha2 md5 pem pkcs1 gmp ntru random nonce x509 curl revocation hmac stroke kernel-netlink socket-default updown
+
+  send_vendor_id = yes 
+}

testing/tests/ikev2/alg-chacha20poly1305/posttest.dat

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+moon::ipsec stop
+carol::ipsec stop
+moon::iptables-restore < /etc/iptables.flush
+carol::iptables-restore < /etc/iptables.flush

testing/tests/ikev2/alg-chacha20poly1305/pretest.dat

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+moon::iptables-restore < /etc/iptables.rules
+carol::iptables-restore < /etc/iptables.rules
+moon::ipsec start
+carol::ipsec start
+carol::sleep 1 
+carol::ipsec up home

testing/tests/ikev2/alg-chacha20poly1305/test.conf

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+#!/bin/bash
+#
+# This configuration file provides information on the
+# guest instances used for this test
+
+# All guest instances that are required for this test
+#
+VIRTHOSTS="alice moon carol winnetou"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-m-c-w.png"
+
+# Guest instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="moon"
+
+# Guest instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="moon carol"