tests: move test source to vpp/test

- Generate copyright year and version
  instead of using hard-coded data

Type: refactor

Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: I6058f5025323b3aa483f5df4a2c4371e27b5914e

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)