summaryrefslogtreecommitdiffstats
path: root/test/test_ikev2.py
diff options
context:
space:
mode:
Diffstat (limited to 'test/test_ikev2.py')
-rw-r--r--test/test_ikev2.py2059
1 files changed, 2059 insertions, 0 deletions
diff --git a/test/test_ikev2.py b/test/test_ikev2.py
new file mode 100644
index 00000000000..558e8a02f87
--- /dev/null
+++ b/test/test_ikev2.py
@@ -0,0 +1,2059 @@
+import os
+import time
+from socket import inet_pton
+from cryptography import x509
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import hashes, hmac
+from cryptography.hazmat.primitives.asymmetric import dh, padding
+from cryptography.hazmat.primitives.serialization import load_pem_private_key
+from cryptography.hazmat.primitives.ciphers import (
+ Cipher,
+ algorithms,
+ modes,
+)
+from ipaddress import IPv4Address, IPv6Address, ip_address
+import unittest
+from scapy.layers.ipsec import ESP
+from scapy.layers.inet import IP, UDP, Ether
+from scapy.layers.inet6 import IPv6
+from scapy.packet import raw, Raw
+from scapy.utils import long_converter
+from framework import tag_fixme_vpp_workers
+from framework import VppTestCase, VppTestRunner
+from vpp_ikev2 import Profile, IDType, AuthMethod
+from vpp_papi import VppEnum
+
+try:
+ text_type = unicode
+except NameError:
+ text_type = str
+
+KEY_PAD = b"Key Pad for IKEv2"
+SALT_SIZE = 4
+GCM_ICV_SIZE = 16
+GCM_IV_SIZE = 8
+
+
+# defined in rfc3526
+# tuple structure is (p, g, key_len)
+DH = {
+ '2048MODPgr': (long_converter("""
+ FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1
+ 29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD
+ EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245
+ E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED
+ EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D
+ C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F
+ 83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D
+ 670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B
+ E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9
+ DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510
+ 15728E5A 8AACAA68 FFFFFFFF FFFFFFFF"""), 2, 256),
+
+ '3072MODPgr': (long_converter("""
+ FFFFFFFF FFFFFFFF C90FDAA2 2168C234 C4C6628B 80DC1CD1
+ 29024E08 8A67CC74 020BBEA6 3B139B22 514A0879 8E3404DD
+ EF9519B3 CD3A431B 302B0A6D F25F1437 4FE1356D 6D51C245
+ E485B576 625E7EC6 F44C42E9 A637ED6B 0BFF5CB6 F406B7ED
+ EE386BFB 5A899FA5 AE9F2411 7C4B1FE6 49286651 ECE45B3D
+ C2007CB8 A163BF05 98DA4836 1C55D39A 69163FA8 FD24CF5F
+ 83655D23 DCA3AD96 1C62F356 208552BB 9ED52907 7096966D
+ 670C354E 4ABC9804 F1746C08 CA18217C 32905E46 2E36CE3B
+ E39E772C 180E8603 9B2783A2 EC07A28F B5C55DF0 6F4C52C9
+ DE2BCBF6 95581718 3995497C EA956AE5 15D22618 98FA0510
+ 15728E5A 8AAAC42D AD33170D 04507A33 A85521AB DF1CBA64
+ ECFB8504 58DBEF0A 8AEA7157 5D060C7D B3970F85 A6E1E4C7
+ ABF5AE8C DB0933D7 1E8C94E0 4A25619D CEE3D226 1AD2EE6B
+ F12FFA06 D98A0864 D8760273 3EC86A64 521F2B18 177B200C
+ BBE11757 7A615D6C 770988C0 BAD946E2 08E24FA0 74E5AB31
+ 43DB5BFC E0FD108E 4B82D120 A93AD2CA FFFFFFFF FFFFFFFF"""), 2, 384)
+}
+
+
+class CryptoAlgo(object):
+ def __init__(self, name, cipher, mode):
+ self.name = name
+ self.cipher = cipher
+ self.mode = mode
+ if self.cipher is not None:
+ self.bs = self.cipher.block_size // 8
+
+ if self.name == 'AES-GCM-16ICV':
+ self.iv_len = GCM_IV_SIZE
+ else:
+ self.iv_len = self.bs
+
+ def encrypt(self, data, key, aad=None):
+ iv = os.urandom(self.iv_len)
+ if aad is None:
+ encryptor = Cipher(self.cipher(key), self.mode(iv),
+ default_backend()).encryptor()
+ return iv + encryptor.update(data) + encryptor.finalize()
+ else:
+ salt = key[-SALT_SIZE:]
+ nonce = salt + iv
+ encryptor = Cipher(self.cipher(key[:-SALT_SIZE]), self.mode(nonce),
+ default_backend()).encryptor()
+ encryptor.authenticate_additional_data(aad)
+ data = encryptor.update(data) + encryptor.finalize()
+ data += encryptor.tag[:GCM_ICV_SIZE]
+ return iv + data
+
+ def decrypt(self, data, key, aad=None, icv=None):
+ if aad is None:
+ iv = data[:self.iv_len]
+ ct = data[self.iv_len:]
+ decryptor = Cipher(algorithms.AES(key),
+ self.mode(iv),
+ default_backend()).decryptor()
+ return decryptor.update(ct) + decryptor.finalize()
+ else:
+ salt = key[-SALT_SIZE:]
+ nonce = salt + data[:GCM_IV_SIZE]
+ ct = data[GCM_IV_SIZE:]
+ key = key[:-SALT_SIZE]
+ decryptor = Cipher(algorithms.AES(key),
+ self.mode(nonce, icv, len(icv)),
+ default_backend()).decryptor()
+ decryptor.authenticate_additional_data(aad)
+ return decryptor.update(ct) + decryptor.finalize()
+
+ def pad(self, data):
+ pad_len = (len(data) // self.bs + 1) * self.bs - len(data)
+ data = data + b'\x00' * (pad_len - 1)
+ return data + bytes([pad_len - 1])
+
+
+class AuthAlgo(object):
+ def __init__(self, name, mac, mod, key_len, trunc_len=None):
+ self.name = name
+ self.mac = mac
+ self.mod = mod
+ self.key_len = key_len
+ self.trunc_len = trunc_len or key_len
+
+
+CRYPTO_ALGOS = {
+ 'NULL': CryptoAlgo('NULL', cipher=None, mode=None),
+ 'AES-CBC': CryptoAlgo('AES-CBC', cipher=algorithms.AES, mode=modes.CBC),
+ 'AES-GCM-16ICV': CryptoAlgo('AES-GCM-16ICV', cipher=algorithms.AES,
+ mode=modes.GCM),
+}
+
+AUTH_ALGOS = {
+ 'NULL': AuthAlgo('NULL', mac=None, mod=None, key_len=0, trunc_len=0),
+ 'HMAC-SHA1-96': AuthAlgo('HMAC-SHA1-96', hmac.HMAC, hashes.SHA1, 20, 12),
+ 'SHA2-256-128': AuthAlgo('SHA2-256-128', hmac.HMAC, hashes.SHA256, 32, 16),
+ 'SHA2-384-192': AuthAlgo('SHA2-384-192', hmac.HMAC, hashes.SHA256, 48, 24),
+ 'SHA2-512-256': AuthAlgo('SHA2-512-256', hmac.HMAC, hashes.SHA256, 64, 32),
+}
+
+PRF_ALGOS = {
+ 'NULL': AuthAlgo('NULL', mac=None, mod=None, key_len=0, trunc_len=0),
+ 'PRF_HMAC_SHA2_256': AuthAlgo('PRF_HMAC_SHA2_256', hmac.HMAC,
+ hashes.SHA256, 32),
+}
+
+CRYPTO_IDS = {
+ 12: 'AES-CBC',
+ 20: 'AES-GCM-16ICV',
+}
+
+INTEG_IDS = {
+ 2: 'HMAC-SHA1-96',
+ 12: 'SHA2-256-128',
+ 13: 'SHA2-384-192',
+ 14: 'SHA2-512-256',
+}
+
+
+class IKEv2ChildSA(object):
+ def __init__(self, local_ts, remote_ts, is_initiator):
+ spi = os.urandom(4)
+ if is_initiator:
+ self.ispi = spi
+ self.rspi = None
+ else:
+ self.rspi = spi
+ self.ispi = None
+ self.local_ts = local_ts
+ self.remote_ts = remote_ts
+
+
+class IKEv2SA(object):
+ def __init__(self, test, is_initiator=True, i_id=None, r_id=None,
+ spi=b'\x01\x02\x03\x04\x05\x06\x07\x08', id_type='fqdn',
+ nonce=None, auth_data=None, local_ts=None, remote_ts=None,
+ auth_method='shared-key', priv_key=None, i_natt=False,
+ r_natt=False, udp_encap=False):
+ self.udp_encap = udp_encap
+ self.i_natt = i_natt
+ self.r_natt = r_natt
+ if i_natt or r_natt:
+ self.sport = 4500
+ self.dport = 4500
+ else:
+ self.sport = 500
+ self.dport = 500
+ self.msg_id = 0
+ self.dh_params = None
+ self.test = test
+ self.priv_key = priv_key
+ self.is_initiator = is_initiator
+ nonce = nonce or os.urandom(32)
+ self.auth_data = auth_data
+ self.i_id = i_id
+ self.r_id = r_id
+ if isinstance(id_type, str):
+ self.id_type = IDType.value(id_type)
+ else:
+ self.id_type = id_type
+ self.auth_method = auth_method
+ if self.is_initiator:
+ self.rspi = 8 * b'\x00'
+ self.ispi = spi
+ self.i_nonce = nonce
+ else:
+ self.rspi = spi
+ self.ispi = 8 * b'\x00'
+ self.r_nonce = nonce
+ self.child_sas = [IKEv2ChildSA(local_ts, remote_ts,
+ self.is_initiator)]
+
+ def new_msg_id(self):
+ self.msg_id += 1
+ return self.msg_id
+
+ @property
+ def my_dh_pub_key(self):
+ if self.is_initiator:
+ return self.i_dh_data
+ return self.r_dh_data
+
+ @property
+ def peer_dh_pub_key(self):
+ if self.is_initiator:
+ return self.r_dh_data
+ return self.i_dh_data
+
+ @property
+ def natt(self):
+ return self.i_natt or self.r_natt
+
+ def compute_secret(self):
+ priv = self.dh_private_key
+ peer = self.peer_dh_pub_key
+ p, g, l = self.ike_group
+ return pow(int.from_bytes(peer, 'big'),
+ int.from_bytes(priv, 'big'), p).to_bytes(l, 'big')
+
+ def generate_dh_data(self):
+ # generate DH keys
+ if self.ike_dh not in DH:
+ raise NotImplementedError('%s not in DH group' % self.ike_dh)
+
+ if self.dh_params is None:
+ dhg = DH[self.ike_dh]
+ pn = dh.DHParameterNumbers(dhg[0], dhg[1])
+ self.dh_params = pn.parameters(default_backend())
+
+ priv = self.dh_params.generate_private_key()
+ pub = priv.public_key()
+ x = priv.private_numbers().x
+ self.dh_private_key = x.to_bytes(priv.key_size // 8, 'big')
+ y = pub.public_numbers().y
+
+ if self.is_initiator:
+ self.i_dh_data = y.to_bytes(pub.key_size // 8, 'big')
+ else:
+ self.r_dh_data = y.to_bytes(pub.key_size // 8, 'big')
+
+ def complete_dh_data(self):
+ self.dh_shared_secret = self.compute_secret()
+
+ def calc_child_keys(self):
+ prf = self.ike_prf_alg.mod()
+ s = self.i_nonce + self.r_nonce
+ c = self.child_sas[0]
+
+ encr_key_len = self.esp_crypto_key_len
+ integ_key_len = self.esp_integ_alg.key_len
+ salt_len = 0 if integ_key_len else 4
+
+ l = (integ_key_len * 2 +
+ encr_key_len * 2 +
+ salt_len * 2)
+ keymat = self.calc_prfplus(prf, self.sk_d, s, l)
+
+ pos = 0
+ c.sk_ei = keymat[pos:pos+encr_key_len]
+ pos += encr_key_len
+
+ if integ_key_len:
+ c.sk_ai = keymat[pos:pos+integ_key_len]
+ pos += integ_key_len
+ else:
+ c.salt_ei = keymat[pos:pos+salt_len]
+ pos += salt_len
+
+ c.sk_er = keymat[pos:pos+encr_key_len]
+ pos += encr_key_len
+
+ if integ_key_len:
+ c.sk_ar = keymat[pos:pos+integ_key_len]
+ pos += integ_key_len
+ else:
+ c.salt_er = keymat[pos:pos+salt_len]
+ pos += salt_len
+
+ def calc_prfplus(self, prf, key, seed, length):
+ r = b''
+ t = None
+ x = 1
+ while len(r) < length and x < 255:
+ if t is not None:
+ s = t
+ else:
+ s = b''
+ s = s + seed + bytes([x])
+ t = self.calc_prf(prf, key, s)
+ r = r + t
+ x = x + 1
+
+ if x == 255:
+ return None
+ return r
+
+ def calc_prf(self, prf, key, data):
+ h = self.ike_prf_alg.mac(key, prf, backend=default_backend())
+ h.update(data)
+ return h.finalize()
+
+ def calc_keys(self):
+ prf = self.ike_prf_alg.mod()
+ # SKEYSEED = prf(Ni | Nr, g^ir)
+ s = self.i_nonce + self.r_nonce
+ self.skeyseed = self.calc_prf(prf, s, self.dh_shared_secret)
+
+ # calculate S = Ni | Nr | SPIi SPIr
+ s = s + self.ispi + self.rspi
+
+ prf_key_trunc = self.ike_prf_alg.trunc_len
+ encr_key_len = self.ike_crypto_key_len
+ tr_prf_key_len = self.ike_prf_alg.key_len
+ integ_key_len = self.ike_integ_alg.key_len
+ if integ_key_len == 0:
+ salt_size = 4
+ else:
+ salt_size = 0
+
+ l = (prf_key_trunc +
+ integ_key_len * 2 +
+ encr_key_len * 2 +
+ tr_prf_key_len * 2 +
+ salt_size * 2)
+ keymat = self.calc_prfplus(prf, self.skeyseed, s, l)
+
+ pos = 0
+ self.sk_d = keymat[:pos+prf_key_trunc]
+ pos += prf_key_trunc
+
+ self.sk_ai = keymat[pos:pos+integ_key_len]
+ pos += integ_key_len
+ self.sk_ar = keymat[pos:pos+integ_key_len]
+ pos += integ_key_len
+
+ self.sk_ei = keymat[pos:pos+encr_key_len + salt_size]
+ pos += encr_key_len + salt_size
+ self.sk_er = keymat[pos:pos+encr_key_len + salt_size]
+ pos += encr_key_len + salt_size
+
+ self.sk_pi = keymat[pos:pos+tr_prf_key_len]
+ pos += tr_prf_key_len
+ self.sk_pr = keymat[pos:pos+tr_prf_key_len]
+
+ def generate_authmsg(self, prf, packet):
+ if self.is_initiator:
+ id = self.i_id
+ nonce = self.r_nonce
+ key = self.sk_pi
+ else:
+ id = self.r_id
+ nonce = self.i_nonce
+ key = self.sk_pr
+ data = bytes([self.id_type, 0, 0, 0]) + id
+ id_hash = self.calc_prf(prf, key, data)
+ return packet + nonce + id_hash
+
+ def auth_init(self):
+ prf = self.ike_prf_alg.mod()
+ if self.is_initiator:
+ packet = self.init_req_packet
+ else:
+ packet = self.init_resp_packet
+ authmsg = self.generate_authmsg(prf, raw(packet))
+ if self.auth_method == 'shared-key':
+ psk = self.calc_prf(prf, self.auth_data, KEY_PAD)
+ self.auth_data = self.calc_prf(prf, psk, authmsg)
+ elif self.auth_method == 'rsa-sig':
+ self.auth_data = self.priv_key.sign(authmsg, padding.PKCS1v15(),
+ hashes.SHA1())
+ else:
+ raise TypeError('unknown auth method type!')
+
+ def encrypt(self, data, aad=None):
+ data = self.ike_crypto_alg.pad(data)
+ return self.ike_crypto_alg.encrypt(data, self.my_cryptokey, aad)
+
+ @property
+ def peer_authkey(self):
+ if self.is_initiator:
+ return self.sk_ar
+ return self.sk_ai
+
+ @property
+ def my_authkey(self):
+ if self.is_initiator:
+ return self.sk_ai
+ return self.sk_ar
+
+ @property
+ def my_cryptokey(self):
+ if self.is_initiator:
+ return self.sk_ei
+ return self.sk_er
+
+ @property
+ def peer_cryptokey(self):
+ if self.is_initiator:
+ return self.sk_er
+ return self.sk_ei
+
+ def concat(self, alg, key_len):
+ return alg + '-' + str(key_len * 8)
+
+ @property
+ def vpp_ike_cypto_alg(self):
+ return self.concat(self.ike_crypto, self.ike_crypto_key_len)
+
+ @property
+ def vpp_esp_cypto_alg(self):
+ return self.concat(self.esp_crypto, self.esp_crypto_key_len)
+
+ def verify_hmac(self, ikemsg):
+ integ_trunc = self.ike_integ_alg.trunc_len
+ exp_hmac = ikemsg[-integ_trunc:]
+ data = ikemsg[:-integ_trunc]
+ computed_hmac = self.compute_hmac(self.ike_integ_alg.mod(),
+ self.peer_authkey, data)
+ self.test.assertEqual(computed_hmac[:integ_trunc], exp_hmac)
+
+ def compute_hmac(self, integ, key, data):
+ h = self.ike_integ_alg.mac(key, integ, backend=default_backend())
+ h.update(data)
+ return h.finalize()
+
+ def decrypt(self, data, aad=None, icv=None):
+ return self.ike_crypto_alg.decrypt(data, self.peer_cryptokey, aad, icv)
+
+ def hmac_and_decrypt(self, ike):
+ ep = ike[ikev2.IKEv2_payload_Encrypted]
+ if self.ike_crypto == 'AES-GCM-16ICV':
+ aad_len = len(ikev2.IKEv2_payload_Encrypted()) + len(ikev2.IKEv2())
+ ct = ep.load[:-GCM_ICV_SIZE]
+ tag = ep.load[-GCM_ICV_SIZE:]
+ plain = self.decrypt(ct, raw(ike)[:aad_len], tag)
+ else:
+ self.verify_hmac(raw(ike))
+ integ_trunc = self.ike_integ_alg.trunc_len
+
+ # remove ICV and decrypt payload
+ ct = ep.load[:-integ_trunc]
+ plain = self.decrypt(ct)
+ # remove padding
+ pad_len = plain[-1]
+ return plain[:-pad_len - 1]
+
+ def build_ts_addr(self, ts, version):
+ return {'starting_address_v' + version: ts['start_addr'],
+ 'ending_address_v' + version: ts['end_addr']}
+
+ def generate_ts(self, is_ip4):
+ c = self.child_sas[0]
+ ts_data = {'IP_protocol_ID': 0,
+ 'start_port': 0,
+ 'end_port': 0xffff}
+ if is_ip4:
+ ts_data.update(self.build_ts_addr(c.local_ts, '4'))
+ ts1 = ikev2.IPv4TrafficSelector(**ts_data)
+ ts_data.update(self.build_ts_addr(c.remote_ts, '4'))
+ ts2 = ikev2.IPv4TrafficSelector(**ts_data)
+ else:
+ ts_data.update(self.build_ts_addr(c.local_ts, '6'))
+ ts1 = ikev2.IPv6TrafficSelector(**ts_data)
+ ts_data.update(self.build_ts_addr(c.remote_ts, '6'))
+ ts2 = ikev2.IPv6TrafficSelector(**ts_data)
+
+ if self.is_initiator:
+ return ([ts1], [ts2])
+ return ([ts2], [ts1])
+
+ def set_ike_props(self, crypto, crypto_key_len, integ, prf, dh):
+ if crypto not in CRYPTO_ALGOS:
+ raise TypeError('unsupported encryption algo %r' % crypto)
+ self.ike_crypto = crypto
+ self.ike_crypto_alg = CRYPTO_ALGOS[crypto]
+ self.ike_crypto_key_len = crypto_key_len
+
+ if integ not in AUTH_ALGOS:
+ raise TypeError('unsupported auth algo %r' % integ)
+ self.ike_integ = None if integ == 'NULL' else integ
+ self.ike_integ_alg = AUTH_ALGOS[integ]
+
+ if prf not in PRF_ALGOS:
+ raise TypeError('unsupported prf algo %r' % prf)
+ self.ike_prf = prf
+ self.ike_prf_alg = PRF_ALGOS[prf]
+ self.ike_dh = dh
+ self.ike_group = DH[self.ike_dh]
+
+ def set_esp_props(self, crypto, crypto_key_len, integ):
+ self.esp_crypto_key_len = crypto_key_len
+ if crypto not in CRYPTO_ALGOS:
+ raise TypeError('unsupported encryption algo %r' % crypto)
+ self.esp_crypto = crypto
+ self.esp_crypto_alg = CRYPTO_ALGOS[crypto]
+
+ if integ not in AUTH_ALGOS:
+ raise TypeError('unsupported auth algo %r' % integ)
+ self.esp_integ = None if integ == 'NULL' else integ
+ self.esp_integ_alg = AUTH_ALGOS[integ]
+
+ def crypto_attr(self, key_len):
+ if self.ike_crypto in ['AES-CBC', 'AES-GCM-16ICV']:
+ return (0x800e << 16 | key_len << 3, 12)
+ else:
+ raise Exception('unsupported attribute type')
+
+ def ike_crypto_attr(self):
+ return self.crypto_attr(self.ike_crypto_key_len)
+
+ def esp_crypto_attr(self):
+ return self.crypto_attr(self.esp_crypto_key_len)
+
+ def compute_nat_sha1(self, ip, port, rspi=None):
+ if rspi is None:
+ rspi = self.rspi
+ data = self.ispi + rspi + ip + (port).to_bytes(2, 'big')
+ digest = hashes.Hash(hashes.SHA1(), backend=default_backend())
+ digest.update(data)
+ return digest.finalize()
+
+
+class IkePeer(VppTestCase):
+ """ common class for initiator and responder """
+
+ @classmethod
+ def setUpClass(cls):
+ import scapy.contrib.ikev2 as _ikev2
+ globals()['ikev2'] = _ikev2
+ super(IkePeer, cls).setUpClass()
+ cls.create_pg_interfaces(range(2))
+ for i in cls.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+ i.config_ip6()
+ i.resolve_ndp()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(IkePeer, cls).tearDownClass()
+
+ def tearDown(self):
+ super(IkePeer, self).tearDown()
+ if self.del_sa_from_responder:
+ self.initiate_del_sa_from_responder()
+ else:
+ self.initiate_del_sa_from_initiator()
+ r = self.vapi.ikev2_sa_dump()
+ self.assertEqual(len(r), 0)
+ sas = self.vapi.ipsec_sa_dump()
+ self.assertEqual(len(sas), 0)
+ self.p.remove_vpp_config()
+ self.assertIsNone(self.p.query_vpp_config())
+
+ def setUp(self):
+ super(IkePeer, self).setUp()
+ self.config_tc()
+ self.p.add_vpp_config()
+ self.assertIsNotNone(self.p.query_vpp_config())
+ if self.sa.is_initiator:
+ self.sa.generate_dh_data()
+ self.vapi.cli('ikev2 set logging level 4')
+ self.vapi.cli('event-lo clear')
+
+ def assert_counter(self, count, name, version='ip4'):
+ node_name = '/err/ikev2-%s/' % version + name
+ self.assertEqual(count, self.statistics.get_err_counter(node_name))
+
+ def create_rekey_request(self):
+ sa, first_payload = self.generate_auth_payload(is_rekey=True)
+ header = ikev2.IKEv2(
+ init_SPI=self.sa.ispi,
+ resp_SPI=self.sa.rspi, id=self.sa.new_msg_id(),
+ flags='Initiator', exch_type='CREATE_CHILD_SA')
+
+ ike_msg = self.encrypt_ike_msg(header, sa, first_payload)
+ return self.create_packet(self.pg0, ike_msg, self.sa.sport,
+ self.sa.dport, self.sa.natt, self.ip6)
+
+ def create_empty_request(self):
+ header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+ id=self.sa.new_msg_id(), flags='Initiator',
+ exch_type='INFORMATIONAL',
+ next_payload='Encrypted')
+
+ msg = self.encrypt_ike_msg(header, b'', None)
+ return self.create_packet(self.pg0, msg, self.sa.sport,
+ self.sa.dport, self.sa.natt, self.ip6)
+
+ def create_packet(self, src_if, msg, sport=500, dport=500, natt=False,
+ use_ip6=False):
+ if use_ip6:
+ src_ip = src_if.remote_ip6
+ dst_ip = src_if.local_ip6
+ ip_layer = IPv6
+ else:
+ src_ip = src_if.remote_ip4
+ dst_ip = src_if.local_ip4
+ ip_layer = IP
+ res = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+ ip_layer(src=src_ip, dst=dst_ip) /
+ UDP(sport=sport, dport=dport))
+ if natt:
+ # insert non ESP marker
+ res = res / Raw(b'\x00' * 4)
+ return res / msg
+
+ def verify_udp(self, udp):
+ self.assertEqual(udp.sport, self.sa.sport)
+ self.assertEqual(udp.dport, self.sa.dport)
+
+ def get_ike_header(self, packet):
+ try:
+ ih = packet[ikev2.IKEv2]
+ ih = self.verify_and_remove_non_esp_marker(ih)
+ except IndexError as e:
+ # this is a workaround for getting IKEv2 layer as both ikev2 and
+ # ipsec register for port 4500
+ esp = packet[ESP]
+ ih = self.verify_and_remove_non_esp_marker(esp)
+ self.assertEqual(ih.version, 0x20)
+ self.assertNotIn('Version', ih.flags)
+ return ih
+
+ def verify_and_remove_non_esp_marker(self, packet):
+ if self.sa.natt:
+ # if we are in nat traversal mode check for non esp marker
+ # and remove it
+ data = raw(packet)
+ self.assertEqual(data[:4], b'\x00' * 4)
+ return ikev2.IKEv2(data[4:])
+ else:
+ return packet
+
+ def encrypt_ike_msg(self, header, plain, first_payload):
+ if self.sa.ike_crypto == 'AES-GCM-16ICV':
+ data = self.sa.ike_crypto_alg.pad(raw(plain))
+ plen = len(data) + GCM_IV_SIZE + GCM_ICV_SIZE +\
+ len(ikev2.IKEv2_payload_Encrypted())
+ tlen = plen + len(ikev2.IKEv2())
+
+ # prepare aad data
+ sk_p = ikev2.IKEv2_payload_Encrypted(next_payload=first_payload,
+ length=plen)
+ header.length = tlen
+ res = header / sk_p
+ encr = self.sa.encrypt(raw(plain), raw(res))
+ sk_p = ikev2.IKEv2_payload_Encrypted(next_payload=first_payload,
+ length=plen, load=encr)
+ res = header / sk_p
+ else:
+ encr = self.sa.encrypt(raw(plain))
+ trunc_len = self.sa.ike_integ_alg.trunc_len
+ plen = len(encr) + len(ikev2.IKEv2_payload_Encrypted()) + trunc_len
+ tlen = plen + len(ikev2.IKEv2())
+
+ sk_p = ikev2.IKEv2_payload_Encrypted(next_payload=first_payload,
+ length=plen, load=encr)
+ header.length = tlen
+ res = header / sk_p
+
+ integ_data = raw(res)
+ hmac_data = self.sa.compute_hmac(self.sa.ike_integ_alg.mod(),
+ self.sa.my_authkey, integ_data)
+ res = res / Raw(hmac_data[:trunc_len])
+ assert(len(res) == tlen)
+ return res
+
+ def verify_udp_encap(self, ipsec_sa):
+ e = VppEnum.vl_api_ipsec_sad_flags_t
+ if self.sa.udp_encap or self.sa.natt:
+ self.assertIn(e.IPSEC_API_SAD_FLAG_UDP_ENCAP, ipsec_sa.flags)
+ else:
+ self.assertNotIn(e.IPSEC_API_SAD_FLAG_UDP_ENCAP, ipsec_sa.flags)
+
+ def verify_ipsec_sas(self, is_rekey=False):
+ sas = self.vapi.ipsec_sa_dump()
+ if is_rekey:
+ # after rekey there is a short period of time in which old
+ # inbound SA is still present
+ sa_count = 3
+ else:
+ sa_count = 2
+ self.assertEqual(len(sas), sa_count)
+ if self.sa.is_initiator:
+ if is_rekey:
+ sa0 = sas[0].entry
+ sa1 = sas[2].entry
+ else:
+ sa0 = sas[0].entry
+ sa1 = sas[1].entry
+ else:
+ if is_rekey:
+ sa0 = sas[2].entry
+ sa1 = sas[0].entry
+ else:
+ sa1 = sas[0].entry
+ sa0 = sas[1].entry
+
+ c = self.sa.child_sas[0]
+
+ self.verify_udp_encap(sa0)
+ self.verify_udp_encap(sa1)
+ vpp_crypto_alg = self.vpp_enums[self.sa.vpp_esp_cypto_alg]
+ self.assertEqual(sa0.crypto_algorithm, vpp_crypto_alg)
+ self.assertEqual(sa1.crypto_algorithm, vpp_crypto_alg)
+
+ if self.sa.esp_integ is None:
+ vpp_integ_alg = 0
+ else:
+ vpp_integ_alg = self.vpp_enums[self.sa.esp_integ]
+ self.assertEqual(sa0.integrity_algorithm, vpp_integ_alg)
+ self.assertEqual(sa1.integrity_algorithm, vpp_integ_alg)
+
+ # verify crypto keys
+ self.assertEqual(sa0.crypto_key.length, len(c.sk_er))
+ self.assertEqual(sa1.crypto_key.length, len(c.sk_ei))
+ self.assertEqual(sa0.crypto_key.data[:len(c.sk_er)], c.sk_er)
+ self.assertEqual(sa1.crypto_key.data[:len(c.sk_ei)], c.sk_ei)
+
+ # verify integ keys
+ if vpp_integ_alg:
+ self.assertEqual(sa0.integrity_key.length, len(c.sk_ar))
+ self.assertEqual(sa1.integrity_key.length, len(c.sk_ai))
+ self.assertEqual(sa0.integrity_key.data[:len(c.sk_ar)], c.sk_ar)
+ self.assertEqual(sa1.integrity_key.data[:len(c.sk_ai)], c.sk_ai)
+ else:
+ self.assertEqual(sa0.salt.to_bytes(4, 'little'), c.salt_er)
+ self.assertEqual(sa1.salt.to_bytes(4, 'little'), c.salt_ei)
+
+ def verify_keymat(self, api_keys, keys, name):
+ km = getattr(keys, name)
+ api_km = getattr(api_keys, name)
+ api_km_len = getattr(api_keys, name + '_len')
+ self.assertEqual(len(km), api_km_len)
+ self.assertEqual(km, api_km[:api_km_len])
+
+ def verify_id(self, api_id, exp_id):
+ self.assertEqual(api_id.type, IDType.value(exp_id.type))
+ self.assertEqual(api_id.data_len, exp_id.data_len)
+ self.assertEqual(bytes(api_id.data, 'ascii'), exp_id.type)
+
+ def verify_ike_sas(self):
+ r = self.vapi.ikev2_sa_dump()
+ self.assertEqual(len(r), 1)
+ sa = r[0].sa
+ self.assertEqual(self.sa.ispi, (sa.ispi).to_bytes(8, 'big'))
+ self.assertEqual(self.sa.rspi, (sa.rspi).to_bytes(8, 'big'))
+ if self.ip6:
+ if self.sa.is_initiator:
+ self.assertEqual(sa.iaddr, IPv6Address(self.pg0.remote_ip6))
+ self.assertEqual(sa.raddr, IPv6Address(self.pg0.local_ip6))
+ else:
+ self.assertEqual(sa.iaddr, IPv6Address(self.pg0.local_ip6))
+ self.assertEqual(sa.raddr, IPv6Address(self.pg0.remote_ip6))
+ else:
+ if self.sa.is_initiator:
+ self.assertEqual(sa.iaddr, IPv4Address(self.pg0.remote_ip4))
+ self.assertEqual(sa.raddr, IPv4Address(self.pg0.local_ip4))
+ else:
+ self.assertEqual(sa.iaddr, IPv4Address(self.pg0.local_ip4))
+ self.assertEqual(sa.raddr, IPv4Address(self.pg0.remote_ip4))
+ self.verify_keymat(sa.keys, self.sa, 'sk_d')
+ self.verify_keymat(sa.keys, self.sa, 'sk_ai')
+ self.verify_keymat(sa.keys, self.sa, 'sk_ar')
+ self.verify_keymat(sa.keys, self.sa, 'sk_ei')
+ self.verify_keymat(sa.keys, self.sa, 'sk_er')
+ self.verify_keymat(sa.keys, self.sa, 'sk_pi')
+ self.verify_keymat(sa.keys, self.sa, 'sk_pr')
+
+ self.assertEqual(sa.i_id.type, self.sa.id_type)
+ self.assertEqual(sa.r_id.type, self.sa.id_type)
+ self.assertEqual(sa.i_id.data_len, len(self.sa.i_id))
+ self.assertEqual(sa.r_id.data_len, len(self.sa.r_id))
+ self.assertEqual(bytes(sa.i_id.data, 'ascii'), self.sa.i_id)
+ self.assertEqual(bytes(sa.r_id.data, 'ascii'), self.sa.r_id)
+
+ r = self.vapi.ikev2_child_sa_dump(sa_index=sa.sa_index)
+ self.assertEqual(len(r), 1)
+ csa = r[0].child_sa
+ self.assertEqual(csa.sa_index, sa.sa_index)
+ c = self.sa.child_sas[0]
+ if hasattr(c, 'sk_ai'):
+ self.verify_keymat(csa.keys, c, 'sk_ai')
+ self.verify_keymat(csa.keys, c, 'sk_ar')
+ self.verify_keymat(csa.keys, c, 'sk_ei')
+ self.verify_keymat(csa.keys, c, 'sk_er')
+ self.assertEqual(csa.i_spi.to_bytes(4, 'big'), c.ispi)
+ self.assertEqual(csa.r_spi.to_bytes(4, 'big'), c.rspi)
+
+ tsi, tsr = self.sa.generate_ts(self.p.ts_is_ip4)
+ tsi = tsi[0]
+ tsr = tsr[0]
+ r = self.vapi.ikev2_traffic_selector_dump(
+ is_initiator=True, sa_index=sa.sa_index,
+ child_sa_index=csa.child_sa_index)
+ self.assertEqual(len(r), 1)
+ ts = r[0].ts
+ self.verify_ts(r[0].ts, tsi[0], True)
+
+ r = self.vapi.ikev2_traffic_selector_dump(
+ is_initiator=False, sa_index=sa.sa_index,
+ child_sa_index=csa.child_sa_index)
+ self.assertEqual(len(r), 1)
+ self.verify_ts(r[0].ts, tsr[0], False)
+
+ n = self.vapi.ikev2_nonce_get(is_initiator=True,
+ sa_index=sa.sa_index)
+ self.verify_nonce(n, self.sa.i_nonce)
+ n = self.vapi.ikev2_nonce_get(is_initiator=False,
+ sa_index=sa.sa_index)
+ self.verify_nonce(n, self.sa.r_nonce)
+
+ def verify_nonce(self, api_nonce, nonce):
+ self.assertEqual(api_nonce.data_len, len(nonce))
+ self.assertEqual(api_nonce.nonce, nonce)
+
+ def verify_ts(self, api_ts, ts, is_initiator):
+ if is_initiator:
+ self.assertTrue(api_ts.is_local)
+ else:
+ self.assertFalse(api_ts.is_local)
+
+ if self.p.ts_is_ip4:
+ self.assertEqual(api_ts.start_addr,
+ IPv4Address(ts.starting_address_v4))
+ self.assertEqual(api_ts.end_addr,
+ IPv4Address(ts.ending_address_v4))
+ else:
+ self.assertEqual(api_ts.start_addr,
+ IPv6Address(ts.starting_address_v6))
+ self.assertEqual(api_ts.end_addr,
+ IPv6Address(ts.ending_address_v6))
+ self.assertEqual(api_ts.start_port, ts.start_port)
+ self.assertEqual(api_ts.end_port, ts.end_port)
+ self.assertEqual(api_ts.protocol_id, ts.IP_protocol_ID)
+
+
+class TemplateInitiator(IkePeer):
+ """ initiator test template """
+
+ def initiate_del_sa_from_initiator(self):
+ ispi = int.from_bytes(self.sa.ispi, 'little')
+ self.pg0.enable_capture()
+ self.pg_start()
+ self.vapi.ikev2_initiate_del_ike_sa(ispi=ispi)
+ capture = self.pg0.get_capture(1)
+ ih = self.get_ike_header(capture[0])
+ self.assertNotIn('Response', ih.flags)
+ self.assertIn('Initiator', ih.flags)
+ self.assertEqual(ih.init_SPI, self.sa.ispi)
+ self.assertEqual(ih.resp_SPI, self.sa.rspi)
+ plain = self.sa.hmac_and_decrypt(ih)
+ d = ikev2.IKEv2_payload_Delete(plain)
+ self.assertEqual(d.proto, 1) # proto=IKEv2
+ header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+ flags='Response', exch_type='INFORMATIONAL',
+ id=ih.id, next_payload='Encrypted')
+ resp = self.encrypt_ike_msg(header, b'', None)
+ self.send_and_assert_no_replies(self.pg0, resp)
+
+ def verify_del_sa(self, packet):
+ ih = self.get_ike_header(packet)
+ self.assertEqual(ih.id, self.sa.msg_id)
+ self.assertEqual(ih.exch_type, 37) # exchange informational
+ self.assertIn('Response', ih.flags)
+ self.assertIn('Initiator', ih.flags)
+ plain = self.sa.hmac_and_decrypt(ih)
+ self.assertEqual(plain, b'')
+
+ def initiate_del_sa_from_responder(self):
+ header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+ exch_type='INFORMATIONAL',
+ id=self.sa.new_msg_id())
+ del_sa = ikev2.IKEv2_payload_Delete(proto='IKEv2')
+ ike_msg = self.encrypt_ike_msg(header, del_sa, 'Delete')
+ packet = self.create_packet(self.pg0, ike_msg,
+ self.sa.sport, self.sa.dport,
+ self.sa.natt, self.ip6)
+ self.pg0.add_stream(packet)
+ self.pg0.enable_capture()
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ self.verify_del_sa(capture[0])
+
+ @staticmethod
+ def find_notify_payload(packet, notify_type):
+ n = packet[ikev2.IKEv2_payload_Notify]
+ while n is not None:
+ if n.type == notify_type:
+ return n
+ n = n.payload
+ return None
+
+ def verify_nat_detection(self, packet):
+ if self.ip6:
+ iph = packet[IPv6]
+ else:
+ iph = packet[IP]
+ udp = packet[UDP]
+
+ # NAT_DETECTION_SOURCE_IP
+ s = self.find_notify_payload(packet, 16388)
+ self.assertIsNotNone(s)
+ src_sha = self.sa.compute_nat_sha1(
+ inet_pton(socket.AF_INET, iph.src), udp.sport, b'\x00' * 8)
+ self.assertEqual(s.load, src_sha)
+
+ # NAT_DETECTION_DESTINATION_IP
+ s = self.find_notify_payload(packet, 16389)
+ self.assertIsNotNone(s)
+ dst_sha = self.sa.compute_nat_sha1(
+ inet_pton(socket.AF_INET, iph.dst), udp.dport, b'\x00' * 8)
+ self.assertEqual(s.load, dst_sha)
+
+ def verify_sa_init_request(self, packet):
+ udp = packet[UDP]
+ self.sa.dport = udp.sport
+ ih = packet[ikev2.IKEv2]
+ self.assertNotEqual(ih.init_SPI, 8 * b'\x00')
+ self.assertEqual(ih.exch_type, 34) # SA_INIT
+ self.sa.ispi = ih.init_SPI
+ self.assertEqual(ih.resp_SPI, 8 * b'\x00')
+ self.assertIn('Initiator', ih.flags)
+ self.assertNotIn('Response', ih.flags)
+ self.sa.i_nonce = ih[ikev2.IKEv2_payload_Nonce].load
+ self.sa.i_dh_data = ih[ikev2.IKEv2_payload_KE].load
+
+ prop = packet[ikev2.IKEv2_payload_Proposal]
+ self.assertEqual(prop.proto, 1) # proto = ikev2
+ self.assertEqual(prop.proposal, 1)
+ self.assertEqual(prop.trans[0].transform_type, 1) # encryption
+ self.assertEqual(prop.trans[0].transform_id,
+ self.p.ike_transforms['crypto_alg'])
+ self.assertEqual(prop.trans[1].transform_type, 2) # prf
+ self.assertEqual(prop.trans[1].transform_id, 5) # "hmac-sha2-256"
+ self.assertEqual(prop.trans[2].transform_type, 4) # dh
+ self.assertEqual(prop.trans[2].transform_id,
+ self.p.ike_transforms['dh_group'])
+
+ self.verify_nat_detection(packet)
+ self.sa.set_ike_props(
+ crypto='AES-GCM-16ICV', crypto_key_len=32,
+ integ='NULL', prf='PRF_HMAC_SHA2_256', dh='3072MODPgr')
+ self.sa.set_esp_props(crypto='AES-CBC', crypto_key_len=32,
+ integ='SHA2-256-128')
+ self.sa.generate_dh_data()
+ self.sa.complete_dh_data()
+ self.sa.calc_keys()
+
+ def update_esp_transforms(self, trans, sa):
+ while trans:
+ if trans.transform_type == 1: # ecryption
+ sa.esp_crypto = CRYPTO_IDS[trans.transform_id]
+ elif trans.transform_type == 3: # integrity
+ sa.esp_integ = INTEG_IDS[trans.transform_id]
+ trans = trans.payload
+
+ def verify_sa_auth_req(self, packet):
+ udp = packet[UDP]
+ self.sa.dport = udp.sport
+ ih = self.get_ike_header(packet)
+ self.assertEqual(ih.resp_SPI, self.sa.rspi)
+ self.assertEqual(ih.init_SPI, self.sa.ispi)
+ self.assertEqual(ih.exch_type, 35) # IKE_AUTH
+ self.assertIn('Initiator', ih.flags)
+ self.assertNotIn('Response', ih.flags)
+
+ udp = packet[UDP]
+ self.verify_udp(udp)
+ self.assertEqual(ih.id, self.sa.msg_id + 1)
+ self.sa.msg_id += 1
+ plain = self.sa.hmac_and_decrypt(ih)
+ idi = ikev2.IKEv2_payload_IDi(plain)
+ idr = ikev2.IKEv2_payload_IDr(idi.payload)
+ self.assertEqual(idi.load, self.sa.i_id)
+ self.assertEqual(idr.load, self.sa.r_id)
+ prop = idi[ikev2.IKEv2_payload_Proposal]
+ c = self.sa.child_sas[0]
+ c.ispi = prop.SPI
+ self.update_esp_transforms(
+ prop[ikev2.IKEv2_payload_Transform], self.sa)
+
+ def send_init_response(self):
+ tr_attr = self.sa.ike_crypto_attr()
+ trans = (ikev2.IKEv2_payload_Transform(transform_type='Encryption',
+ transform_id=self.sa.ike_crypto, length=tr_attr[1],
+ key_length=tr_attr[0]) /
+ ikev2.IKEv2_payload_Transform(transform_type='Integrity',
+ transform_id=self.sa.ike_integ) /
+ ikev2.IKEv2_payload_Transform(transform_type='PRF',
+ transform_id=self.sa.ike_prf_alg.name) /
+ ikev2.IKEv2_payload_Transform(transform_type='GroupDesc',
+ transform_id=self.sa.ike_dh))
+ props = (ikev2.IKEv2_payload_Proposal(proposal=1, proto='IKEv2',
+ trans_nb=4, trans=trans))
+
+ src_address = inet_pton(socket.AF_INET, self.pg0.remote_ip4)
+ if self.sa.natt:
+ dst_address = b'\x0a\x0a\x0a\x0a'
+ else:
+ dst_address = inet_pton(socket.AF_INET, self.pg0.local_ip4)
+ src_nat = self.sa.compute_nat_sha1(src_address, self.sa.sport)
+ dst_nat = self.sa.compute_nat_sha1(dst_address, self.sa.dport)
+
+ self.sa.init_resp_packet = (
+ ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+ exch_type='IKE_SA_INIT', flags='Response') /
+ ikev2.IKEv2_payload_SA(next_payload='KE', prop=props) /
+ ikev2.IKEv2_payload_KE(next_payload='Nonce',
+ group=self.sa.ike_dh,
+ load=self.sa.my_dh_pub_key) /
+ ikev2.IKEv2_payload_Nonce(load=self.sa.r_nonce,
+ next_payload='Notify') /
+ ikev2.IKEv2_payload_Notify(
+ type='NAT_DETECTION_SOURCE_IP', load=src_nat,
+ next_payload='Notify') / ikev2.IKEv2_payload_Notify(
+ type='NAT_DETECTION_DESTINATION_IP', load=dst_nat))
+
+ ike_msg = self.create_packet(self.pg0, self.sa.init_resp_packet,
+ self.sa.sport, self.sa.dport,
+ False, self.ip6)
+ self.pg_send(self.pg0, ike_msg)
+ capture = self.pg0.get_capture(1)
+ self.verify_sa_auth_req(capture[0])
+
+ def initiate_sa_init(self):
+ self.pg0.enable_capture()
+ self.pg_start()
+ self.vapi.ikev2_initiate_sa_init(name=self.p.profile_name)
+
+ capture = self.pg0.get_capture(1)
+ self.verify_sa_init_request(capture[0])
+ self.send_init_response()
+
+ def send_auth_response(self):
+ tr_attr = self.sa.esp_crypto_attr()
+ trans = (ikev2.IKEv2_payload_Transform(transform_type='Encryption',
+ transform_id=self.sa.esp_crypto, length=tr_attr[1],
+ key_length=tr_attr[0]) /
+ ikev2.IKEv2_payload_Transform(transform_type='Integrity',
+ transform_id=self.sa.esp_integ) /
+ ikev2.IKEv2_payload_Transform(
+ transform_type='Extended Sequence Number',
+ transform_id='No ESN') /
+ ikev2.IKEv2_payload_Transform(
+ transform_type='Extended Sequence Number',
+ transform_id='ESN'))
+
+ c = self.sa.child_sas[0]
+ props = (ikev2.IKEv2_payload_Proposal(proposal=1, proto='ESP',
+ SPIsize=4, SPI=c.rspi, trans_nb=4, trans=trans))
+
+ tsi, tsr = self.sa.generate_ts(self.p.ts_is_ip4)
+ plain = (ikev2.IKEv2_payload_IDi(next_payload='IDr',
+ IDtype=self.sa.id_type, load=self.sa.i_id) /
+ ikev2.IKEv2_payload_IDr(next_payload='AUTH',
+ IDtype=self.sa.id_type, load=self.sa.r_id) /
+ ikev2.IKEv2_payload_AUTH(next_payload='SA',
+ auth_type=AuthMethod.value(self.sa.auth_method),
+ load=self.sa.auth_data) /
+ ikev2.IKEv2_payload_SA(next_payload='TSi', prop=props) /
+ ikev2.IKEv2_payload_TSi(next_payload='TSr',
+ number_of_TSs=len(tsi),
+ traffic_selector=tsi) /
+ ikev2.IKEv2_payload_TSr(next_payload='Notify',
+ number_of_TSs=len(tsr),
+ traffic_selector=tsr) /
+ ikev2.IKEv2_payload_Notify(type='INITIAL_CONTACT'))
+
+ header = ikev2.IKEv2(
+ init_SPI=self.sa.ispi,
+ resp_SPI=self.sa.rspi, id=self.sa.new_msg_id(),
+ flags='Response', exch_type='IKE_AUTH')
+
+ ike_msg = self.encrypt_ike_msg(header, plain, 'IDi')
+ packet = self.create_packet(self.pg0, ike_msg, self.sa.sport,
+ self.sa.dport, self.sa.natt, self.ip6)
+ self.pg_send(self.pg0, packet)
+
+ def test_initiator(self):
+ self.initiate_sa_init()
+ self.sa.auth_init()
+ self.sa.calc_child_keys()
+ self.send_auth_response()
+ self.verify_ike_sas()
+
+
+class TemplateResponder(IkePeer):
+ """ responder test template """
+
+ def initiate_del_sa_from_responder(self):
+ self.pg0.enable_capture()
+ self.pg_start()
+ self.vapi.ikev2_initiate_del_ike_sa(
+ ispi=int.from_bytes(self.sa.ispi, 'little'))
+ capture = self.pg0.get_capture(1)
+ ih = self.get_ike_header(capture[0])
+ self.assertNotIn('Response', ih.flags)
+ self.assertNotIn('Initiator', ih.flags)
+ self.assertEqual(ih.exch_type, 37) # INFORMATIONAL
+ plain = self.sa.hmac_and_decrypt(ih)
+ d = ikev2.IKEv2_payload_Delete(plain)
+ self.assertEqual(d.proto, 1) # proto=IKEv2
+ self.assertEqual(ih.init_SPI, self.sa.ispi)
+ self.assertEqual(ih.resp_SPI, self.sa.rspi)
+ header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+ flags='Initiator+Response',
+ exch_type='INFORMATIONAL',
+ id=ih.id, next_payload='Encrypted')
+ resp = self.encrypt_ike_msg(header, b'', None)
+ self.send_and_assert_no_replies(self.pg0, resp)
+
+ def verify_del_sa(self, packet):
+ ih = self.get_ike_header(packet)
+ self.assertEqual(ih.id, self.sa.msg_id)
+ self.assertEqual(ih.exch_type, 37) # exchange informational
+ self.assertIn('Response', ih.flags)
+ self.assertNotIn('Initiator', ih.flags)
+ self.assertEqual(ih.next_payload, 46) # Encrypted
+ self.assertEqual(ih.init_SPI, self.sa.ispi)
+ self.assertEqual(ih.resp_SPI, self.sa.rspi)
+ plain = self.sa.hmac_and_decrypt(ih)
+ self.assertEqual(plain, b'')
+
+ def initiate_del_sa_from_initiator(self):
+ header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+ flags='Initiator', exch_type='INFORMATIONAL',
+ id=self.sa.new_msg_id())
+ del_sa = ikev2.IKEv2_payload_Delete(proto='IKEv2')
+ ike_msg = self.encrypt_ike_msg(header, del_sa, 'Delete')
+ packet = self.create_packet(self.pg0, ike_msg,
+ self.sa.sport, self.sa.dport,
+ self.sa.natt, self.ip6)
+ self.pg0.add_stream(packet)
+ self.pg0.enable_capture()
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ self.verify_del_sa(capture[0])
+
+ def send_sa_init_req(self):
+ tr_attr = self.sa.ike_crypto_attr()
+ trans = (ikev2.IKEv2_payload_Transform(transform_type='Encryption',
+ transform_id=self.sa.ike_crypto, length=tr_attr[1],
+ key_length=tr_attr[0]) /
+ ikev2.IKEv2_payload_Transform(transform_type='Integrity',
+ transform_id=self.sa.ike_integ) /
+ ikev2.IKEv2_payload_Transform(transform_type='PRF',
+ transform_id=self.sa.ike_prf_alg.name) /
+ ikev2.IKEv2_payload_Transform(transform_type='GroupDesc',
+ transform_id=self.sa.ike_dh))
+
+ props = (ikev2.IKEv2_payload_Proposal(proposal=1, proto='IKEv2',
+ trans_nb=4, trans=trans))
+
+ next_payload = None if self.ip6 else 'Notify'
+
+ self.sa.init_req_packet = (
+ ikev2.IKEv2(init_SPI=self.sa.ispi,
+ flags='Initiator', exch_type='IKE_SA_INIT') /
+ ikev2.IKEv2_payload_SA(next_payload='KE', prop=props) /
+ ikev2.IKEv2_payload_KE(next_payload='Nonce',
+ group=self.sa.ike_dh,
+ load=self.sa.my_dh_pub_key) /
+ ikev2.IKEv2_payload_Nonce(next_payload=next_payload,
+ load=self.sa.i_nonce))
+
+ if not self.ip6:
+ if self.sa.i_natt:
+ src_address = b'\x0a\x0a\x0a\x01'
+ else:
+ src_address = inet_pton(socket.AF_INET, self.pg0.remote_ip4)
+
+ if self.sa.r_natt:
+ dst_address = b'\x0a\x0a\x0a\x0a'
+ else:
+ dst_address = inet_pton(socket.AF_INET, self.pg0.local_ip4)
+
+ src_nat = self.sa.compute_nat_sha1(src_address, self.sa.sport)
+ dst_nat = self.sa.compute_nat_sha1(dst_address, self.sa.dport)
+ nat_src_detection = ikev2.IKEv2_payload_Notify(
+ type='NAT_DETECTION_SOURCE_IP', load=src_nat,
+ next_payload='Notify')
+ nat_dst_detection = ikev2.IKEv2_payload_Notify(
+ type='NAT_DETECTION_DESTINATION_IP', load=dst_nat)
+ self.sa.init_req_packet = (self.sa.init_req_packet /
+ nat_src_detection /
+ nat_dst_detection)
+
+ ike_msg = self.create_packet(self.pg0, self.sa.init_req_packet,
+ self.sa.sport, self.sa.dport,
+ self.sa.natt, self.ip6)
+ self.pg0.add_stream(ike_msg)
+ self.pg0.enable_capture()
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ self.verify_sa_init(capture[0])
+
+ def generate_auth_payload(self, last_payload=None, is_rekey=False):
+ tr_attr = self.sa.esp_crypto_attr()
+ last_payload = last_payload or 'Notify'
+ trans = (ikev2.IKEv2_payload_Transform(transform_type='Encryption',
+ transform_id=self.sa.esp_crypto, length=tr_attr[1],
+ key_length=tr_attr[0]) /
+ ikev2.IKEv2_payload_Transform(transform_type='Integrity',
+ transform_id=self.sa.esp_integ) /
+ ikev2.IKEv2_payload_Transform(
+ transform_type='Extended Sequence Number',
+ transform_id='No ESN') /
+ ikev2.IKEv2_payload_Transform(
+ transform_type='Extended Sequence Number',
+ transform_id='ESN'))
+
+ c = self.sa.child_sas[0]
+ props = (ikev2.IKEv2_payload_Proposal(proposal=1, proto='ESP',
+ SPIsize=4, SPI=c.ispi, trans_nb=4, trans=trans))
+
+ tsi, tsr = self.sa.generate_ts(self.p.ts_is_ip4)
+ plain = (ikev2.IKEv2_payload_AUTH(next_payload='SA',
+ auth_type=AuthMethod.value(self.sa.auth_method),
+ load=self.sa.auth_data) /
+ ikev2.IKEv2_payload_SA(next_payload='TSi', prop=props) /
+ ikev2.IKEv2_payload_TSi(next_payload='TSr',
+ number_of_TSs=len(tsi), traffic_selector=tsi) /
+ ikev2.IKEv2_payload_TSr(next_payload=last_payload,
+ number_of_TSs=len(tsr), traffic_selector=tsr))
+
+ if is_rekey:
+ first_payload = 'Nonce'
+ plain = (ikev2.IKEv2_payload_Nonce(load=self.sa.i_nonce,
+ next_payload='SA') / plain /
+ ikev2.IKEv2_payload_Notify(type='REKEY_SA',
+ proto='ESP', SPI=c.ispi))
+ else:
+ first_payload = 'IDi'
+ ids = (ikev2.IKEv2_payload_IDi(next_payload='IDr',
+ IDtype=self.sa.id_type, load=self.sa.i_id) /
+ ikev2.IKEv2_payload_IDr(next_payload='AUTH',
+ IDtype=self.sa.id_type, load=self.sa.r_id))
+ plain = ids / plain
+ return plain, first_payload
+
+ def send_sa_auth(self):
+ plain, first_payload = self.generate_auth_payload(
+ last_payload='Notify')
+ plain = plain / ikev2.IKEv2_payload_Notify(type='INITIAL_CONTACT')
+ header = ikev2.IKEv2(
+ init_SPI=self.sa.ispi,
+ resp_SPI=self.sa.rspi, id=self.sa.new_msg_id(),
+ flags='Initiator', exch_type='IKE_AUTH')
+
+ ike_msg = self.encrypt_ike_msg(header, plain, first_payload)
+ packet = self.create_packet(self.pg0, ike_msg, self.sa.sport,
+ self.sa.dport, self.sa.natt, self.ip6)
+ self.pg0.add_stream(packet)
+ self.pg0.enable_capture()
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ self.verify_sa_auth_resp(capture[0])
+
+ def verify_sa_init(self, packet):
+ ih = self.get_ike_header(packet)
+
+ self.assertEqual(ih.id, self.sa.msg_id)
+ self.assertEqual(ih.exch_type, 34)
+ self.assertIn('Response', ih.flags)
+ self.assertEqual(ih.init_SPI, self.sa.ispi)
+ self.assertNotEqual(ih.resp_SPI, 0)
+ self.sa.rspi = ih.resp_SPI
+ try:
+ sa = ih[ikev2.IKEv2_payload_SA]
+ self.sa.r_nonce = ih[ikev2.IKEv2_payload_Nonce].load
+ self.sa.r_dh_data = ih[ikev2.IKEv2_payload_KE].load
+ except IndexError as e:
+ self.logger.error("unexpected reply: SA/Nonce/KE payload found!")
+ self.logger.error(ih.show())
+ raise
+ self.sa.complete_dh_data()
+ self.sa.calc_keys()
+ self.sa.auth_init()
+
+ def verify_sa_auth_resp(self, packet):
+ ike = self.get_ike_header(packet)
+ udp = packet[UDP]
+ self.verify_udp(udp)
+ self.assertEqual(ike.id, self.sa.msg_id)
+ plain = self.sa.hmac_and_decrypt(ike)
+ idr = ikev2.IKEv2_payload_IDr(plain)
+ prop = idr[ikev2.IKEv2_payload_Proposal]
+ self.assertEqual(prop.SPIsize, 4)
+ self.sa.child_sas[0].rspi = prop.SPI
+ self.sa.calc_child_keys()
+
+ IKE_NODE_SUFFIX = 'ip4'
+
+ def verify_counters(self):
+ self.assert_counter(2, 'processed', self.IKE_NODE_SUFFIX)
+ self.assert_counter(1, 'init_sa_req', self.IKE_NODE_SUFFIX)
+ self.assert_counter(1, 'ike_auth_req', self.IKE_NODE_SUFFIX)
+
+ r = self.vapi.ikev2_sa_dump()
+ s = r[0].sa.stats
+ self.assertEqual(1, s.n_sa_auth_req)
+ self.assertEqual(1, s.n_sa_init_req)
+
+ def test_responder(self):
+ self.send_sa_init_req()
+ self.send_sa_auth()
+ self.verify_ipsec_sas()
+ self.verify_ike_sas()
+ self.verify_counters()
+
+
+class Ikev2Params(object):
+ def config_params(self, params={}):
+ ec = VppEnum.vl_api_ipsec_crypto_alg_t
+ ei = VppEnum.vl_api_ipsec_integ_alg_t
+ self.vpp_enums = {
+ 'AES-CBC-128': ec.IPSEC_API_CRYPTO_ALG_AES_CBC_128,
+ 'AES-CBC-192': ec.IPSEC_API_CRYPTO_ALG_AES_CBC_192,
+ 'AES-CBC-256': ec.IPSEC_API_CRYPTO_ALG_AES_CBC_256,
+ 'AES-GCM-16ICV-128': ec.IPSEC_API_CRYPTO_ALG_AES_GCM_128,
+ 'AES-GCM-16ICV-192': ec.IPSEC_API_CRYPTO_ALG_AES_GCM_192,
+ 'AES-GCM-16ICV-256': ec.IPSEC_API_CRYPTO_ALG_AES_GCM_256,
+
+ 'HMAC-SHA1-96': ei.IPSEC_API_INTEG_ALG_SHA1_96,
+ 'SHA2-256-128': ei.IPSEC_API_INTEG_ALG_SHA_256_128,
+ 'SHA2-384-192': ei.IPSEC_API_INTEG_ALG_SHA_384_192,
+ 'SHA2-512-256': ei.IPSEC_API_INTEG_ALG_SHA_512_256}
+
+ dpd_disabled = True if 'dpd_disabled' not in params else\
+ params['dpd_disabled']
+ if dpd_disabled:
+ self.vapi.cli('ikev2 dpd disable')
+ self.del_sa_from_responder = False if 'del_sa_from_responder'\
+ not in params else params['del_sa_from_responder']
+ i_natt = False if 'i_natt' not in params else params['i_natt']
+ r_natt = False if 'r_natt' not in params else params['r_natt']
+ self.p = Profile(self, 'pr1')
+ self.ip6 = False if 'ip6' not in params else params['ip6']
+
+ if 'auth' in params and params['auth'] == 'rsa-sig':
+ auth_method = 'rsa-sig'
+ work_dir = os.getenv('BR') + '/../src/plugins/ikev2/test/certs/'
+ self.vapi.ikev2_set_local_key(
+ key_file=work_dir + params['server-key'])
+
+ client_file = work_dir + params['client-cert']
+ server_pem = open(work_dir + params['server-cert']).read()
+ client_priv = open(work_dir + params['client-key']).read()
+ client_priv = load_pem_private_key(str.encode(client_priv), None,
+ default_backend())
+ self.peer_cert = x509.load_pem_x509_certificate(
+ str.encode(server_pem),
+ default_backend())
+ self.p.add_auth(method='rsa-sig', data=str.encode(client_file))
+ auth_data = None
+ else:
+ auth_data = b'$3cr3tpa$$w0rd'
+ self.p.add_auth(method='shared-key', data=auth_data)
+ auth_method = 'shared-key'
+ client_priv = None
+
+ is_init = True if 'is_initiator' not in params else\
+ params['is_initiator']
+
+ idr = {'id_type': 'fqdn', 'data': b'vpp.home'}
+ idi = {'id_type': 'fqdn', 'data': b'roadwarrior.example.com'}
+ if is_init:
+ self.p.add_local_id(**idr)
+ self.p.add_remote_id(**idi)
+ else:
+ self.p.add_local_id(**idi)
+ self.p.add_remote_id(**idr)
+
+ loc_ts = {'start_addr': '10.10.10.0', 'end_addr': '10.10.10.255'} if\
+ 'loc_ts' not in params else params['loc_ts']
+ rem_ts = {'start_addr': '10.0.0.0', 'end_addr': '10.0.0.255'} if\
+ 'rem_ts' not in params else params['rem_ts']
+ self.p.add_local_ts(**loc_ts)
+ self.p.add_remote_ts(**rem_ts)
+ if 'responder' in params:
+ self.p.add_responder(params['responder'])
+ if 'ike_transforms' in params:
+ self.p.add_ike_transforms(params['ike_transforms'])
+ if 'esp_transforms' in params:
+ self.p.add_esp_transforms(params['esp_transforms'])
+
+ udp_encap = False if 'udp_encap' not in params else\
+ params['udp_encap']
+ if udp_encap:
+ self.p.set_udp_encap(True)
+
+ if 'responder_hostname' in params:
+ hn = params['responder_hostname']
+ self.p.add_responder_hostname(hn)
+
+ # configure static dns record
+ self.vapi.dns_name_server_add_del(
+ is_ip6=0, is_add=1,
+ server_address=IPv4Address(u'8.8.8.8').packed)
+ self.vapi.dns_enable_disable(enable=1)
+
+ cmd = "dns cache add {} {}".format(hn['hostname'],
+ self.pg0.remote_ip4)
+ self.vapi.cli(cmd)
+
+ self.sa = IKEv2SA(self, i_id=idi['data'], r_id=idr['data'],
+ is_initiator=is_init,
+ id_type=self.p.local_id['id_type'],
+ i_natt=i_natt, r_natt=r_natt,
+ priv_key=client_priv, auth_method=auth_method,
+ auth_data=auth_data, udp_encap=udp_encap,
+ local_ts=self.p.remote_ts, remote_ts=self.p.local_ts)
+ if is_init:
+ ike_crypto = ('AES-CBC', 32) if 'ike-crypto' not in params else\
+ params['ike-crypto']
+ ike_integ = 'HMAC-SHA1-96' if 'ike-integ' not in params else\
+ params['ike-integ']
+ ike_dh = '2048MODPgr' if 'ike-dh' not in params else\
+ params['ike-dh']
+
+ esp_crypto = ('AES-CBC', 32) if 'esp-crypto' not in params else\
+ params['esp-crypto']
+ esp_integ = 'HMAC-SHA1-96' if 'esp-integ' not in params else\
+ params['esp-integ']
+
+ self.sa.set_ike_props(
+ crypto=ike_crypto[0], crypto_key_len=ike_crypto[1],
+ integ=ike_integ, prf='PRF_HMAC_SHA2_256', dh=ike_dh)
+ self.sa.set_esp_props(
+ crypto=esp_crypto[0], crypto_key_len=esp_crypto[1],
+ integ=esp_integ)
+
+
+class TestApi(VppTestCase):
+ """ Test IKEV2 API """
+ @classmethod
+ def setUpClass(cls):
+ super(TestApi, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestApi, cls).tearDownClass()
+
+ def tearDown(self):
+ super(TestApi, self).tearDown()
+ self.p1.remove_vpp_config()
+ self.p2.remove_vpp_config()
+ r = self.vapi.ikev2_profile_dump()
+ self.assertEqual(len(r), 0)
+
+ def configure_profile(self, cfg):
+ p = Profile(self, cfg['name'])
+ p.add_local_id(id_type=cfg['loc_id'][0], data=cfg['loc_id'][1])
+ p.add_remote_id(id_type=cfg['rem_id'][0], data=cfg['rem_id'][1])
+ p.add_local_ts(**cfg['loc_ts'])
+ p.add_remote_ts(**cfg['rem_ts'])
+ p.add_responder(cfg['responder'])
+ p.add_ike_transforms(cfg['ike_ts'])
+ p.add_esp_transforms(cfg['esp_ts'])
+ p.add_auth(**cfg['auth'])
+ p.set_udp_encap(cfg['udp_encap'])
+ p.set_ipsec_over_udp_port(cfg['ipsec_over_udp_port'])
+ if 'lifetime_data' in cfg:
+ p.set_lifetime_data(cfg['lifetime_data'])
+ if 'tun_itf' in cfg:
+ p.set_tunnel_interface(cfg['tun_itf'])
+ if 'natt_disabled' in cfg and cfg['natt_disabled']:
+ p.disable_natt()
+ p.add_vpp_config()
+ return p
+
+ def test_profile_api(self):
+ """ test profile dump API """
+ loc_ts4 = {
+ 'proto': 8,
+ 'start_port': 1,
+ 'end_port': 19,
+ 'start_addr': '3.3.3.2',
+ 'end_addr': '3.3.3.3',
+ }
+ rem_ts4 = {
+ 'proto': 9,
+ 'start_port': 10,
+ 'end_port': 119,
+ 'start_addr': '4.5.76.80',
+ 'end_addr': '2.3.4.6',
+ }
+
+ loc_ts6 = {
+ 'proto': 8,
+ 'start_port': 1,
+ 'end_port': 19,
+ 'start_addr': 'ab::1',
+ 'end_addr': 'ab::4',
+ }
+ rem_ts6 = {
+ 'proto': 9,
+ 'start_port': 10,
+ 'end_port': 119,
+ 'start_addr': 'cd::12',
+ 'end_addr': 'cd::13',
+ }
+
+ conf = {
+ 'p1': {
+ 'name': 'p1',
+ 'natt_disabled': True,
+ 'loc_id': ('fqdn', b'vpp.home'),
+ 'rem_id': ('fqdn', b'roadwarrior.example.com'),
+ 'loc_ts': loc_ts4,
+ 'rem_ts': rem_ts4,
+ 'responder': {'sw_if_index': 0, 'addr': '5.6.7.8'},
+ 'ike_ts': {
+ 'crypto_alg': 20,
+ 'crypto_key_size': 32,
+ 'integ_alg': 1,
+ 'dh_group': 1},
+ 'esp_ts': {
+ 'crypto_alg': 13,
+ 'crypto_key_size': 24,
+ 'integ_alg': 2},
+ 'auth': {'method': 'shared-key', 'data': b'sharedkeydata'},
+ 'udp_encap': True,
+ 'ipsec_over_udp_port': 4501,
+ 'lifetime_data': {
+ 'lifetime': 123,
+ 'lifetime_maxdata': 20192,
+ 'lifetime_jitter': 9,
+ 'handover': 132},
+ },
+ 'p2': {
+ 'name': 'p2',
+ 'loc_id': ('ip4-addr', b'192.168.2.1'),
+ 'rem_id': ('ip6-addr', b'abcd::1'),
+ 'loc_ts': loc_ts6,
+ 'rem_ts': rem_ts6,
+ 'responder': {'sw_if_index': 4, 'addr': 'def::10'},
+ 'ike_ts': {
+ 'crypto_alg': 12,
+ 'crypto_key_size': 16,
+ 'integ_alg': 3,
+ 'dh_group': 3},
+ 'esp_ts': {
+ 'crypto_alg': 9,
+ 'crypto_key_size': 24,
+ 'integ_alg': 4},
+ 'auth': {'method': 'shared-key', 'data': b'sharedkeydata'},
+ 'udp_encap': False,
+ 'ipsec_over_udp_port': 4600,
+ 'tun_itf': 0}
+ }
+ self.p1 = self.configure_profile(conf['p1'])
+ self.p2 = self.configure_profile(conf['p2'])
+
+ r = self.vapi.ikev2_profile_dump()
+ self.assertEqual(len(r), 2)
+ self.verify_profile(r[0].profile, conf['p1'])
+ self.verify_profile(r[1].profile, conf['p2'])
+
+ def verify_id(self, api_id, cfg_id):
+ self.assertEqual(api_id.type, IDType.value(cfg_id[0]))
+ self.assertEqual(bytes(api_id.data, 'ascii'), cfg_id[1])
+
+ def verify_ts(self, api_ts, cfg_ts):
+ self.assertEqual(api_ts.protocol_id, cfg_ts['proto'])
+ self.assertEqual(api_ts.start_port, cfg_ts['start_port'])
+ self.assertEqual(api_ts.end_port, cfg_ts['end_port'])
+ self.assertEqual(api_ts.start_addr,
+ ip_address(text_type(cfg_ts['start_addr'])))
+ self.assertEqual(api_ts.end_addr,
+ ip_address(text_type(cfg_ts['end_addr'])))
+
+ def verify_responder(self, api_r, cfg_r):
+ self.assertEqual(api_r.sw_if_index, cfg_r['sw_if_index'])
+ self.assertEqual(api_r.addr, ip_address(cfg_r['addr']))
+
+ def verify_transforms(self, api_ts, cfg_ts):
+ self.assertEqual(api_ts.crypto_alg, cfg_ts['crypto_alg'])
+ self.assertEqual(api_ts.crypto_key_size, cfg_ts['crypto_key_size'])
+ self.assertEqual(api_ts.integ_alg, cfg_ts['integ_alg'])
+
+ def verify_ike_transforms(self, api_ts, cfg_ts):
+ self.verify_transforms(api_ts, cfg_ts)
+ self.assertEqual(api_ts.dh_group, cfg_ts['dh_group'])
+
+ def verify_esp_transforms(self, api_ts, cfg_ts):
+ self.verify_transforms(api_ts, cfg_ts)
+
+ def verify_auth(self, api_auth, cfg_auth):
+ self.assertEqual(api_auth.method, AuthMethod.value(cfg_auth['method']))
+ self.assertEqual(api_auth.data, cfg_auth['data'])
+ self.assertEqual(api_auth.data_len, len(cfg_auth['data']))
+
+ def verify_lifetime_data(self, p, ld):
+ self.assertEqual(p.lifetime, ld['lifetime'])
+ self.assertEqual(p.lifetime_maxdata, ld['lifetime_maxdata'])
+ self.assertEqual(p.lifetime_jitter, ld['lifetime_jitter'])
+ self.assertEqual(p.handover, ld['handover'])
+
+ def verify_profile(self, ap, cp):
+ self.assertEqual(ap.name, cp['name'])
+ self.assertEqual(ap.udp_encap, cp['udp_encap'])
+ self.verify_id(ap.loc_id, cp['loc_id'])
+ self.verify_id(ap.rem_id, cp['rem_id'])
+ self.verify_ts(ap.loc_ts, cp['loc_ts'])
+ self.verify_ts(ap.rem_ts, cp['rem_ts'])
+ self.verify_responder(ap.responder, cp['responder'])
+ self.verify_ike_transforms(ap.ike_ts, cp['ike_ts'])
+ self.verify_esp_transforms(ap.esp_ts, cp['esp_ts'])
+ self.verify_auth(ap.auth, cp['auth'])
+ natt_dis = False if 'natt_disabled' not in cp else cp['natt_disabled']
+ self.assertTrue(natt_dis == ap.natt_disabled)
+
+ if 'lifetime_data' in cp:
+ self.verify_lifetime_data(ap, cp['lifetime_data'])
+ self.assertEqual(ap.ipsec_over_udp_port, cp['ipsec_over_udp_port'])
+ if 'tun_itf' in cp:
+ self.assertEqual(ap.tun_itf, cp['tun_itf'])
+ else:
+ self.assertEqual(ap.tun_itf, 0xffffffff)
+
+
+@tag_fixme_vpp_workers
+class TestResponderBehindNAT(TemplateResponder, Ikev2Params):
+ """ test responder - responder behind NAT """
+
+ IKE_NODE_SUFFIX = 'ip4-natt'
+
+ def config_tc(self):
+ self.config_params({'r_natt': True})
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorNATT(TemplateInitiator, Ikev2Params):
+ """ test ikev2 initiator - NAT traversal (intitiator behind NAT) """
+
+ def config_tc(self):
+ self.config_params({
+ 'i_natt': True,
+ 'is_initiator': False, # seen from test case perspective
+ # thus vpp is initiator
+ 'responder': {'sw_if_index': self.pg0.sw_if_index,
+ 'addr': self.pg0.remote_ip4},
+ 'ike-crypto': ('AES-GCM-16ICV', 32),
+ 'ike-integ': 'NULL',
+ 'ike-dh': '3072MODPgr',
+ 'ike_transforms': {
+ 'crypto_alg': 20, # "aes-gcm-16"
+ 'crypto_key_size': 256,
+ 'dh_group': 15, # "modp-3072"
+ },
+ 'esp_transforms': {
+ 'crypto_alg': 12, # "aes-cbc"
+ 'crypto_key_size': 256,
+ # "hmac-sha2-256-128"
+ 'integ_alg': 12}})
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorPsk(TemplateInitiator, Ikev2Params):
+ """ test ikev2 initiator - pre shared key auth """
+
+ def config_tc(self):
+ self.config_params({
+ 'is_initiator': False, # seen from test case perspective
+ # thus vpp is initiator
+ 'ike-crypto': ('AES-GCM-16ICV', 32),
+ 'ike-integ': 'NULL',
+ 'ike-dh': '3072MODPgr',
+ 'ike_transforms': {
+ 'crypto_alg': 20, # "aes-gcm-16"
+ 'crypto_key_size': 256,
+ 'dh_group': 15, # "modp-3072"
+ },
+ 'esp_transforms': {
+ 'crypto_alg': 12, # "aes-cbc"
+ 'crypto_key_size': 256,
+ # "hmac-sha2-256-128"
+ 'integ_alg': 12},
+ 'responder_hostname': {'hostname': 'vpp.responder.org',
+ 'sw_if_index': self.pg0.sw_if_index}})
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorRequestWindowSize(TestInitiatorPsk):
+ """ test initiator - request window size (1) """
+
+ def rekey_respond(self, req, update_child_sa_data):
+ ih = self.get_ike_header(req)
+ plain = self.sa.hmac_and_decrypt(ih)
+ sa = ikev2.IKEv2_payload_SA(plain)
+ if update_child_sa_data:
+ prop = sa[ikev2.IKEv2_payload_Proposal]
+ self.sa.i_nonce = sa[ikev2.IKEv2_payload_Nonce].load
+ self.sa.r_nonce = self.sa.i_nonce
+ self.sa.child_sas[0].ispi = prop.SPI
+ self.sa.child_sas[0].rspi = prop.SPI
+ self.sa.calc_child_keys()
+
+ header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+ flags='Response', exch_type=36,
+ id=ih.id, next_payload='Encrypted')
+ resp = self.encrypt_ike_msg(header, sa, 'SA')
+ packet = self.create_packet(self.pg0, resp, self.sa.sport,
+ self.sa.dport, self.sa.natt, self.ip6)
+ self.send_and_assert_no_replies(self.pg0, packet)
+
+ def test_initiator(self):
+ super(TestInitiatorRequestWindowSize, self).test_initiator()
+ self.pg0.enable_capture()
+ self.pg_start()
+ ispi = int.from_bytes(self.sa.child_sas[0].ispi, 'little')
+ self.vapi.ikev2_initiate_rekey_child_sa(ispi=ispi)
+ self.vapi.ikev2_initiate_rekey_child_sa(ispi=ispi)
+ capture = self.pg0.get_capture(2)
+
+ # reply in reverse order
+ self.rekey_respond(capture[1], True)
+ self.rekey_respond(capture[0], False)
+
+ # verify that only the second request was accepted
+ self.verify_ike_sas()
+ self.verify_ipsec_sas(is_rekey=True)
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorRekey(TestInitiatorPsk):
+ """ test ikev2 initiator - rekey """
+
+ def rekey_from_initiator(self):
+ ispi = int.from_bytes(self.sa.child_sas[0].ispi, 'little')
+ self.pg0.enable_capture()
+ self.pg_start()
+ self.vapi.ikev2_initiate_rekey_child_sa(ispi=ispi)
+ capture = self.pg0.get_capture(1)
+ ih = self.get_ike_header(capture[0])
+ self.assertEqual(ih.exch_type, 36) # CHILD_SA
+ self.assertNotIn('Response', ih.flags)
+ self.assertIn('Initiator', ih.flags)
+ plain = self.sa.hmac_and_decrypt(ih)
+ sa = ikev2.IKEv2_payload_SA(plain)
+ prop = sa[ikev2.IKEv2_payload_Proposal]
+ self.sa.i_nonce = sa[ikev2.IKEv2_payload_Nonce].load
+ self.sa.r_nonce = self.sa.i_nonce
+ # update new responder SPI
+ self.sa.child_sas[0].ispi = prop.SPI
+ self.sa.child_sas[0].rspi = prop.SPI
+ self.sa.calc_child_keys()
+ header = ikev2.IKEv2(init_SPI=self.sa.ispi, resp_SPI=self.sa.rspi,
+ flags='Response', exch_type=36,
+ id=ih.id, next_payload='Encrypted')
+ resp = self.encrypt_ike_msg(header, sa, 'SA')
+ packet = self.create_packet(self.pg0, resp, self.sa.sport,
+ self.sa.dport, self.sa.natt, self.ip6)
+ self.send_and_assert_no_replies(self.pg0, packet)
+
+ def test_initiator(self):
+ super(TestInitiatorRekey, self).test_initiator()
+ self.rekey_from_initiator()
+ self.verify_ike_sas()
+ self.verify_ipsec_sas(is_rekey=True)
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorDelSAFromResponder(TemplateInitiator, Ikev2Params):
+ """ test ikev2 initiator - delete IKE SA from responder """
+
+ def config_tc(self):
+ self.config_params({
+ 'del_sa_from_responder': True,
+ 'is_initiator': False, # seen from test case perspective
+ # thus vpp is initiator
+ 'responder': {'sw_if_index': self.pg0.sw_if_index,
+ 'addr': self.pg0.remote_ip4},
+ 'ike-crypto': ('AES-GCM-16ICV', 32),
+ 'ike-integ': 'NULL',
+ 'ike-dh': '3072MODPgr',
+ 'ike_transforms': {
+ 'crypto_alg': 20, # "aes-gcm-16"
+ 'crypto_key_size': 256,
+ 'dh_group': 15, # "modp-3072"
+ },
+ 'esp_transforms': {
+ 'crypto_alg': 12, # "aes-cbc"
+ 'crypto_key_size': 256,
+ # "hmac-sha2-256-128"
+ 'integ_alg': 12}})
+
+
+@tag_fixme_vpp_workers
+class TestResponderInitBehindNATT(TemplateResponder, Ikev2Params):
+ """ test ikev2 responder - initiator behind NAT """
+
+ IKE_NODE_SUFFIX = 'ip4-natt'
+
+ def config_tc(self):
+ self.config_params(
+ {'i_natt': True})
+
+
+@tag_fixme_vpp_workers
+class TestResponderPsk(TemplateResponder, Ikev2Params):
+ """ test ikev2 responder - pre shared key auth """
+ def config_tc(self):
+ self.config_params()
+
+
+@tag_fixme_vpp_workers
+class TestResponderDpd(TestResponderPsk):
+ """
+ Dead peer detection test
+ """
+ def config_tc(self):
+ self.config_params({'dpd_disabled': False})
+
+ def tearDown(self):
+ pass
+
+ def test_responder(self):
+ self.vapi.ikev2_profile_set_liveness(period=2, max_retries=1)
+ super(TestResponderDpd, self).test_responder()
+ self.pg0.enable_capture()
+ self.pg_start()
+ # capture empty request but don't reply
+ capture = self.pg0.get_capture(expected_count=1, timeout=5)
+ ih = self.get_ike_header(capture[0])
+ self.assertEqual(ih.exch_type, 37) # INFORMATIONAL
+ plain = self.sa.hmac_and_decrypt(ih)
+ self.assertEqual(plain, b'')
+ # wait for SA expiration
+ time.sleep(3)
+ ike_sas = self.vapi.ikev2_sa_dump()
+ self.assertEqual(len(ike_sas), 0)
+ ipsec_sas = self.vapi.ipsec_sa_dump()
+ self.assertEqual(len(ipsec_sas), 0)
+
+
+@tag_fixme_vpp_workers
+class TestResponderRekey(TestResponderPsk):
+ """ test ikev2 responder - rekey """
+
+ def rekey_from_initiator(self):
+ packet = self.create_rekey_request()
+ self.pg0.add_stream(packet)
+ self.pg0.enable_capture()
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ ih = self.get_ike_header(capture[0])
+ plain = self.sa.hmac_and_decrypt(ih)
+ sa = ikev2.IKEv2_payload_SA(plain)
+ prop = sa[ikev2.IKEv2_payload_Proposal]
+ self.sa.r_nonce = sa[ikev2.IKEv2_payload_Nonce].load
+ # update new responder SPI
+ self.sa.child_sas[0].rspi = prop.SPI
+
+ def test_responder(self):
+ super(TestResponderRekey, self).test_responder()
+ self.rekey_from_initiator()
+ self.sa.calc_child_keys()
+ self.verify_ike_sas()
+ self.verify_ipsec_sas(is_rekey=True)
+ self.assert_counter(1, 'rekey_req', 'ip4')
+ r = self.vapi.ikev2_sa_dump()
+ self.assertEqual(r[0].sa.stats.n_rekey_req, 1)
+
+
+class TestResponderVrf(TestResponderPsk, Ikev2Params):
+ """ test ikev2 responder - non-default table id """
+
+ @classmethod
+ def setUpClass(cls):
+ import scapy.contrib.ikev2 as _ikev2
+ globals()['ikev2'] = _ikev2
+ super(IkePeer, cls).setUpClass()
+ cls.create_pg_interfaces(range(1))
+ cls.vapi.cli("ip table add 1")
+ cls.vapi.cli("set interface ip table pg0 1")
+ for i in cls.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+ i.config_ip6()
+ i.resolve_ndp()
+
+ def config_tc(self):
+ self.config_params({'dpd_disabled': False})
+
+ def test_responder(self):
+ self.vapi.ikev2_profile_set_liveness(period=2, max_retries=1)
+ super(TestResponderVrf, self).test_responder()
+ self.pg0.enable_capture()
+ self.pg_start()
+ capture = self.pg0.get_capture(expected_count=1, timeout=5)
+ ih = self.get_ike_header(capture[0])
+ self.assertEqual(ih.exch_type, 37) # INFORMATIONAL
+ plain = self.sa.hmac_and_decrypt(ih)
+ self.assertEqual(plain, b'')
+
+
+@tag_fixme_vpp_workers
+class TestResponderRsaSign(TemplateResponder, Ikev2Params):
+ """ test ikev2 responder - cert based auth """
+ def config_tc(self):
+ self.config_params({
+ 'udp_encap': True,
+ 'auth': 'rsa-sig',
+ 'server-key': 'server-key.pem',
+ 'client-key': 'client-key.pem',
+ 'client-cert': 'client-cert.pem',
+ 'server-cert': 'server-cert.pem'})
+
+
+@tag_fixme_vpp_workers
+class Test_IKE_AES_CBC_128_SHA256_128_MODP2048_ESP_AES_CBC_192_SHA_384_192\
+ (TemplateResponder, Ikev2Params):
+ """
+ IKE:AES_CBC_128_SHA256_128,DH=modp2048 ESP:AES_CBC_192_SHA_384_192
+ """
+ def config_tc(self):
+ self.config_params({
+ 'ike-crypto': ('AES-CBC', 16),
+ 'ike-integ': 'SHA2-256-128',
+ 'esp-crypto': ('AES-CBC', 24),
+ 'esp-integ': 'SHA2-384-192',
+ 'ike-dh': '2048MODPgr'})
+
+
+@tag_fixme_vpp_workers
+class TestAES_CBC_128_SHA256_128_MODP3072_ESP_AES_GCM_16\
+ (TemplateResponder, Ikev2Params):
+
+ """
+ IKE:AES_CBC_128_SHA256_128,DH=modp3072 ESP:AES_GCM_16
+ """
+ def config_tc(self):
+ self.config_params({
+ 'ike-crypto': ('AES-CBC', 32),
+ 'ike-integ': 'SHA2-256-128',
+ 'esp-crypto': ('AES-GCM-16ICV', 32),
+ 'esp-integ': 'NULL',
+ 'ike-dh': '3072MODPgr'})
+
+
+@tag_fixme_vpp_workers
+class Test_IKE_AES_GCM_16_256(TemplateResponder, Ikev2Params):
+ """
+ IKE:AES_GCM_16_256
+ """
+
+ IKE_NODE_SUFFIX = 'ip6'
+
+ def config_tc(self):
+ self.config_params({
+ 'del_sa_from_responder': True,
+ 'ip6': True,
+ 'natt': True,
+ 'ike-crypto': ('AES-GCM-16ICV', 32),
+ 'ike-integ': 'NULL',
+ 'ike-dh': '2048MODPgr',
+ 'loc_ts': {'start_addr': 'ab:cd::0',
+ 'end_addr': 'ab:cd::10'},
+ 'rem_ts': {'start_addr': '11::0',
+ 'end_addr': '11::100'}})
+
+
+@tag_fixme_vpp_workers
+class TestInitiatorKeepaliveMsg(TestInitiatorPsk):
+ """
+ Test for keep alive messages
+ """
+
+ def send_empty_req_from_responder(self):
+ packet = self.create_empty_request()
+ self.pg0.add_stream(packet)
+ self.pg0.enable_capture()
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ ih = self.get_ike_header(capture[0])
+ self.assertEqual(ih.id, self.sa.msg_id)
+ plain = self.sa.hmac_and_decrypt(ih)
+ self.assertEqual(plain, b'')
+ self.assert_counter(1, 'keepalive', 'ip4')
+ r = self.vapi.ikev2_sa_dump()
+ self.assertEqual(1, r[0].sa.stats.n_keepalives)
+
+ def test_initiator(self):
+ super(TestInitiatorKeepaliveMsg, self).test_initiator()
+ self.send_empty_req_from_responder()
+
+
+class TestMalformedMessages(TemplateResponder, Ikev2Params):
+ """ malformed packet test """
+
+ def tearDown(self):
+ pass
+
+ def config_tc(self):
+ self.config_params()
+
+ def create_ike_init_msg(self, length=None, payload=None):
+ msg = ikev2.IKEv2(length=length, init_SPI='\x11' * 8,
+ flags='Initiator', exch_type='IKE_SA_INIT')
+ if payload is not None:
+ msg /= payload
+ return self.create_packet(self.pg0, msg, self.sa.sport,
+ self.sa.dport)
+
+ def verify_bad_packet_length(self):
+ ike_msg = self.create_ike_init_msg(length=0xdead)
+ self.send_and_assert_no_replies(self.pg0, ike_msg * self.pkt_count)
+ self.assert_counter(self.pkt_count, 'bad_length')
+
+ def verify_bad_sa_payload_length(self):
+ p = ikev2.IKEv2_payload_SA(length=0xdead)
+ ike_msg = self.create_ike_init_msg(payload=p)
+ self.send_and_assert_no_replies(self.pg0, ike_msg * self.pkt_count)
+ self.assert_counter(self.pkt_count, 'malformed_packet')
+
+ def test_responder(self):
+ self.pkt_count = 254
+ self.verify_bad_packet_length()
+ self.verify_bad_sa_payload_length()
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)