3 from scapy.layers.inet import IP, ICMP
4 from scapy.layers.l2 import Ether
5 from scapy.layers.ipsec import *
7 from framework import VppTestCase
8 from vpp_ip_route import VppIpRoute
13 class TestIpsecAh(VppTestCase):
15 Basic test for IPSEC using AH transport and Tunnel mode
17 Below 4 cases are covered as part of this test
18 1) ipsec ah v4 transport basic test - IPv4 Transport mode
19 scenario using HMAC-SHA1-96 intergrity algo
20 2) ipsec ah v4 transport burst test
21 Above test for 257 pkts
22 3) ipsec ah 4o4 tunnel basic test - IPv4 Tunnel mode
23 scenario using HMAC-SHA1-96 intergrity algo
24 4) ipsec ah 4o4 tunnel burst test
25 Above test for 257 pkts
35 --- encrypt --- plain ---
36 |pg0| -------> |VPP| ------> |pg1|
39 --- decrypt --- plain ---
40 |pg0| <------- |VPP| <------ |pg1|
43 Note : IPv6 is not covered
46 remote_pg0_lb_addr = '1.1.1.1'
47 remote_pg1_lb_addr = '2.2.2.2'
51 super(TestIpsecAh, cls).setUpClass()
53 cls.create_pg_interfaces(range(3))
54 cls.interfaces = list(cls.pg_interfaces)
55 for i in cls.interfaces:
59 cls.logger.info(cls.vapi.ppcli("show int addr"))
61 cls.logger.info(cls.vapi.ppcli("show ipsec"))
63 cls.logger.info(cls.vapi.ppcli("show ipsec"))
65 super(TestIpsecAh, cls).tearDownClass()
76 src4 = socket.inet_pton(socket.AF_INET, cls.remote_pg0_lb_addr)
77 cls.vapi.ip_add_del_route(src4, 32, cls.pg0.remote_ip4n)
78 dst4 = socket.inet_pton(socket.AF_INET, cls.remote_pg1_lb_addr)
79 cls.vapi.ip_add_del_route(dst4, 32, cls.pg1.remote_ip4n)
80 cls.vapi.ipsec_sad_add_del_entry(
85 integrity_key_length=20)
86 cls.vapi.ipsec_sad_add_del_entry(
91 integrity_key_length=20)
92 cls.vapi.ipsec_spd_add_del(spd_id)
93 cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg0.sw_if_index)
94 l_startaddr = r_startaddr = socket.inet_pton(
95 socket.AF_INET, "0.0.0.0")
96 l_stopaddr = r_stopaddr = socket.inet_pton(
97 socket.AF_INET, "255.255.255.255")
98 cls.vapi.ipsec_spd_add_del_entry(
105 cls.vapi.ipsec_spd_add_del_entry(
113 l_startaddr = l_stopaddr = socket.inet_pton(
114 socket.AF_INET, cls.remote_pg0_lb_addr)
115 r_startaddr = r_stopaddr = socket.inet_pton(
116 socket.AF_INET, cls.remote_pg1_lb_addr)
117 cls.vapi.ipsec_spd_add_del_entry(
127 cls.vapi.ipsec_spd_add_del_entry(
140 def configAhTra(cls):
145 remote_tra_spi = 2001
147 cls.vapi.ipsec_sad_add_del_entry(
150 integrity_key_length=20,
152 cls.vapi.ipsec_sad_add_del_entry(
155 integrity_key_length=20,
157 cls.vapi.ipsec_spd_add_del(spd_id)
158 cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg2.sw_if_index)
159 l_startaddr = r_startaddr = socket.inet_pton(
160 socket.AF_INET, "0.0.0.0")
161 l_stopaddr = r_stopaddr = socket.inet_pton(
162 socket.AF_INET, "255.255.255.255")
163 cls.vapi.ipsec_spd_add_del_entry(
170 cls.vapi.ipsec_spd_add_del_entry(
178 l_startaddr = l_stopaddr = cls.pg2.local_ip4n
179 r_startaddr = r_stopaddr = cls.pg2.remote_ip4n
180 cls.vapi.ipsec_spd_add_del_entry(
190 cls.vapi.ipsec_spd_add_del_entry(
202 def configScapySA(self, is_tun=False):
204 self.remote_tun_sa = SecurityAssociation(
207 auth_algo='HMAC-SHA1-96',
208 auth_key='C91KUR9GYMm5GfkEvNjX',
210 src=self.pg0.remote_ip4,
211 dst=self.pg0.local_ip4))
212 self.local_tun_sa = SecurityAssociation(
215 auth_algo='HMAC-SHA1-96',
216 auth_key='C91KUR9GYMm5GfkEvNjX',
218 dst=self.pg0.remote_ip4,
219 src=self.pg0.local_ip4))
221 self.remote_tra_sa = SecurityAssociation(
222 AH, spi=0x000007d0, auth_algo='HMAC-SHA1-96',
223 auth_key='C91KUR9GYMm5GfkEvNjX')
224 self.local_tra_sa = SecurityAssociation(
225 AH, spi=0x000007d1, auth_algo='HMAC-SHA1-96',
226 auth_key='C91KUR9GYMm5GfkEvNjX')
229 super(TestIpsecAh, self).tearDown()
230 if not self.vpp_dead:
231 self.vapi.cli("show hardware")
233 def send_and_expect(self, input, pkts, output, count=1):
234 input.add_stream(pkts)
235 self.pg_enable_capture(self.pg_interfaces)
237 rx = output.get_capture(count)
240 def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1):
241 return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
242 sa.encrypt(IP(src=src, dst=dst) / ICMP() /
243 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
246 def gen_pkts(self, sw_intf, src, dst, count=1):
247 return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
248 IP(src=src, dst=dst) / ICMP() /
249 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
252 def test_ipsec_ah_tra_basic(self, count=1):
253 """ ipsec ah v4 transport basic test """
256 send_pkts = self.gen_encrypt_pkts(
259 src=self.pg2.remote_ip4,
260 dst=self.pg2.local_ip4,
262 recv_pkts = self.send_and_expect(
263 self.pg2, send_pkts, self.pg2, count=count)
264 # ESP TRA VPP encryption/decryption verification
265 for Pkts in recv_pkts:
266 Pkts[AH].padding = Pkts[AH].icv[12:]
267 Pkts[AH].icv = Pkts[AH].icv[:12]
268 decrypt_pkt = self.local_tra_sa.decrypt(Pkts[IP])
270 self.logger.info(self.vapi.ppcli("show error"))
271 self.logger.info(self.vapi.ppcli("show ipsec"))
273 def test_ipsec_ah_tra_burst(self):
274 """ ipsec ah v4 transport burst test """
276 self.test_ipsec_ah_tra_basic(count=257)
278 self.logger.info(self.vapi.ppcli("show error"))
279 self.logger.info(self.vapi.ppcli("show ipsec"))
281 def test_ipsec_ah_tun_basic(self, count=1):
282 """ ipsec ah 4o4 tunnel basic test """
284 self.configScapySA(is_tun=True)
285 send_pkts = self.gen_encrypt_pkts(
288 src=self.remote_pg0_lb_addr,
289 dst=self.remote_pg1_lb_addr,
291 recv_pkts = self.send_and_expect(
292 self.pg0, send_pkts, self.pg1, count=count)
293 # ESP TUN VPP decryption verification
294 for recv_pkt in recv_pkts:
295 self.assert_equal(recv_pkt[IP].src, self.remote_pg0_lb_addr)
296 self.assert_equal(recv_pkt[IP].dst, self.remote_pg1_lb_addr)
297 send_pkts = self.gen_pkts(
299 src=self.remote_pg1_lb_addr,
300 dst=self.remote_pg0_lb_addr,
302 recv_pkts = self.send_and_expect(
303 self.pg1, send_pkts, self.pg0, count=count)
304 # ESP TUN VPP encryption verification
305 for recv_pkt in recv_pkts:
306 decrypt_pkt = self.local_tun_sa.decrypt(recv_pkt[IP])
307 decrypt_pkt = IP(decrypt_pkt[Raw].load)
308 self.assert_equal(decrypt_pkt.src, self.remote_pg1_lb_addr)
309 self.assert_equal(decrypt_pkt.dst, self.remote_pg0_lb_addr)
311 self.logger.info(self.vapi.ppcli("show error"))
312 self.logger.info(self.vapi.ppcli("show ipsec"))
314 def test_ipsec_ah_tun_burst(self):
315 """ ipsec ah 4o4 tunnel burst test """
317 self.test_ipsec_ah_tun_basic(count=257)
319 self.logger.info(self.vapi.ppcli("show error"))
320 self.logger.info(self.vapi.ppcli("show ipsec"))
323 if __name__ == '__main__':
324 unittest.main(testRunner=VppTestRunner)