Partially revert "Implement TLS-ALPN-01 challenge and standalone TLS-ALPN server (#5894)" (#6144)

This partially reverts commit 15f1405fff.

A basic tls-alpn-01 implementation is left so we can successfully parse the
challenge so it can be used in boulder's tests.
This commit is contained in:
Brad Warren 2018-06-26 15:33:41 -07:00 committed by GitHub
parent 87e1912bf9
commit a4760cfe56
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
8 changed files with 32 additions and 420 deletions

View file

@ -1,6 +1,5 @@
"""ACME Identifier Validation Challenges."""
import abc
import codecs
import functools
import hashlib
import logging
@ -8,7 +7,7 @@ import socket
from cryptography.hazmat.primitives import hashes # type: ignore
import josepy as jose
from OpenSSL import crypto
import OpenSSL
import requests
import six
@ -412,8 +411,8 @@ class TLSSNI01Response(KeyAuthorizationChallengeResponse):
"""
if key is None:
key = crypto.PKey()
key.generate_key(crypto.TYPE_RSA, bits)
key = OpenSSL.crypto.PKey()
key.generate_key(OpenSSL.crypto.TYPE_RSA, bits)
return crypto_util.gen_ss_cert(key, [
# z_domain is too big to fit into CN, hence first dummy domain
'dummy', self.z_domain.decode()], force_san=True), key
@ -508,152 +507,19 @@ class TLSSNI01(KeyAuthorizationChallenge):
return self.response(account_key).gen_cert(key=kwargs.get('cert_key'))
@ChallengeResponse.register
class TLSALPN01Response(KeyAuthorizationChallengeResponse):
"""ACME tls-alpn-01 challenge response."""
typ = "tls-alpn-01"
PORT = 443
"""Verification port as defined by the protocol.
You can override it (e.g. for testing) by passing ``port`` to
`simple_verify`.
"""
ID_PE_ACME_IDENTIFIER_V1 = b"1.3.6.1.5.5.7.1.30.1"
ACME_TLS_1_PROTOCOL = "acme-tls/1"
@property
def h(self):
"""Hash value stored in challenge certificate"""
return hashlib.sha256(self.key_authorization.encode('utf-8')).digest()
def gen_cert(self, domain, key=None, bits=2048):
"""Generate tls-alpn-01 certificate.
:param unicode domain: Domain verified by the challenge.
:param OpenSSL.crypto.PKey key: Optional private key used in
certificate generation. If not provided (``None``), then
fresh key will be generated.
:param int bits: Number of bits for newly generated key.
:rtype: `tuple` of `OpenSSL.crypto.X509` and `OpenSSL.crypto.PKey`
"""
if key is None:
key = crypto.PKey()
key.generate_key(crypto.TYPE_RSA, bits)
# Instead of using a ASN.1 encoding library just append the OCTET STRING tag (0x04)
# and the length of the SHA256 hash (0x20) since both of these should never change
der_value = b"DER:0420" + codecs.encode(self.h, 'hex')
acme_extension = crypto.X509Extension(self.ID_PE_ACME_IDENTIFIER_V1,
critical=True, value=der_value)
return crypto_util.gen_ss_cert(key, [domain], force_san=True,
extensions=[acme_extension]), key
def probe_cert(self, domain, host=None, port=None):
"""Probe tls-alpn-01 challenge certificate.
:param unicode domain: domain being validated, required.
:param string host: IP address used to probe the certificate.
:param int port: Port used to probe the certificate.
"""
if host is None:
host = socket.gethostbyname(domain)
logger.debug('%s resolved to %s', domain, host)
if port is None:
port = self.PORT
return crypto_util.probe_sni(host=host, port=port, name=domain,
alpn_protocols=[self.ACME_TLS_1_PROTOCOL])
def verify_cert(self, domain, cert):
"""Verify tls-alpn-01 challenge certificate.
:param unicode domain: Domain name being validated.
:param OpensSSL.crypto.X509 cert: Challenge certificate.
:returns: Whether the certificate was successfully verified.
:rtype: bool
"""
# pylint: disable=protected-access
names = crypto_util._pyopenssl_cert_or_req_all_names(cert)
logger.debug('Certificate %s. SANs: %s', cert.digest('sha256'), names)
if len(names) != 1 or names[0].lower() != domain.lower():
return False
for i in range(cert.get_extension_count()):
ext = cert.get_extension(i)
# FIXME: assume this is the ACME extension. Currently there is no
# way to get full OID of an unknown extension from pyopenssl.
if ext.get_short_name() == b'UNDEF':
data = ext.get_data()
# Add the ASN.1 tag/length prefix to the hash before comparison
return data == b'\x04\x20' + self.h
return False
# pylint: disable=too-many-arguments
def simple_verify(self, chall, domain, account_public_key,
cert=None, host=None, port=None):
"""Simple verify.
Verify ``validation`` using ``account_public_key``, optionally
probe tls-alpn-01 certificate and check using `verify_cert`.
:param .challenges.TLSALPN01 chall: Corresponding challenge.
:param str domain: Domain name being validated.
:param JWK account_public_key:
:param OpenSSL.crypto.X509 cert: Optional certificate. If not
provided (``None``) certificate will be retrieved using
`probe_cert`.
:param string host: IP address used to probe the certificate.
:param int port: Port used to probe the certificate.
:returns: ``True`` iff client's control of the domain has been
verified.
:rtype: bool
"""
if not self.verify(chall, account_public_key):
logger.debug("Verification of key authorization in response failed")
return False
if cert is None:
try:
cert = self.probe_cert(domain=domain, host=host, port=port)
except errors.Error as error:
logger.debug(str(error), exc_info=True)
return False
return self.verify_cert(cert, domain)
@Challenge.register # pylint: disable=too-many-ancestors
class TLSALPN01(KeyAuthorizationChallenge):
"""ACME tls-alpn-01 challenge."""
response_cls = TLSALPN01Response
typ = response_cls.typ
"""ACME tls-alpn-01 challenge.
This class simply allows parsing the TLS-ALPN-01 challenge returned from
the CA. Full TLS-ALPN-01 support is not currently provided.
"""
typ = "tls-alpn-01"
def validation(self, account_key, **kwargs):
"""Generate validation.
:param JWK account_key:
:param OpenSSL.crypto.PKey cert_key: Optional private key used
in certificate generation. If not provided (``None``), then
fresh key will be generated.
:rtype: `tuple` of `OpenSSL.crypto.X509` and `OpenSSL.crypto.PKey`
"""
return self.response(account_key).gen_cert(key=kwargs.get('cert_key'))
"""Generate validation for the challenge."""
raise NotImplementedError()
@Challenge.register # pylint: disable=too-many-ancestors

View file

@ -393,91 +393,6 @@ class TLSSNI01Test(unittest.TestCase):
mock_gen_cert.assert_called_once_with(key=mock.sentinel.cert_key)
class TLSALPN01ResponseTest(unittest.TestCase):
# pylint: disable=too-many-instance-attributes
def setUp(self):
from acme.challenges import TLSALPN01
self.chall = TLSALPN01(
token=jose.b64decode(b'a82d5ff8ef740d12881f6d3c2277ab2e'))
self.domain = u'example.com'
self.domain2 = u'example2.com'
self.response = self.chall.response(KEY)
self.jmsg = {
'resource': 'challenge',
'type': 'tls-alpn-01',
'keyAuthorization': self.response.key_authorization,
}
def test_to_partial_json(self):
self.assertEqual(self.jmsg, self.response.to_partial_json())
def test_from_json(self):
from acme.challenges import TLSALPN01Response
self.assertEqual(self.response, TLSALPN01Response.from_json(self.jmsg))
def test_from_json_hashable(self):
from acme.challenges import TLSALPN01Response
hash(TLSALPN01Response.from_json(self.jmsg))
def test_gen_verify_cert(self):
key1 = test_util.load_pyopenssl_private_key('rsa512_key.pem')
cert, key2 = self.response.gen_cert(self.domain, key1)
self.assertEqual(key1, key2)
self.assertTrue(self.response.verify_cert(self.domain, cert))
def test_gen_verify_cert_gen_key(self):
cert, key = self.response.gen_cert(self.domain)
self.assertTrue(isinstance(key, OpenSSL.crypto.PKey))
self.assertTrue(self.response.verify_cert(self.domain, cert))
def test_verify_bad_cert(self):
self.assertFalse(self.response.verify_cert(self.domain,
test_util.load_cert('cert.pem')))
def test_verify_bad_domain(self):
key1 = test_util.load_pyopenssl_private_key('rsa512_key.pem')
cert, key2 = self.response.gen_cert(self.domain, key1)
self.assertEqual(key1, key2)
self.assertFalse(self.response.verify_cert(self.domain2, cert))
def test_simple_verify_bad_key_authorization(self):
key2 = jose.JWKRSA.load(test_util.load_vector('rsa256_key.pem'))
self.response.simple_verify(self.chall, "local", key2.public_key())
@mock.patch('acme.challenges.TLSALPN01Response.verify_cert', autospec=True)
def test_simple_verify(self, mock_verify_cert):
mock_verify_cert.return_value = mock.sentinel.verification
self.assertEqual(
mock.sentinel.verification, self.response.simple_verify(
self.chall, self.domain, KEY.public_key(),
cert=mock.sentinel.cert))
mock_verify_cert.assert_called_once_with(
self.response, mock.sentinel.cert, self.domain)
@mock.patch('acme.challenges.socket.gethostbyname')
@mock.patch('acme.challenges.crypto_util.probe_sni')
def test_probe_cert(self, mock_probe_sni, mock_gethostbyname):
mock_gethostbyname.return_value = '127.0.0.1'
self.response.probe_cert('foo.com')
mock_gethostbyname.assert_called_once_with('foo.com')
mock_probe_sni.assert_called_once_with(
host='127.0.0.1', port=self.response.PORT, name='foo.com',
alpn_protocols=['acme-tls/1'])
self.response.probe_cert('foo.com', host='8.8.8.8')
mock_probe_sni.assert_called_with(
host='8.8.8.8', port=mock.ANY, name='foo.com',
alpn_protocols=['acme-tls/1'])
@mock.patch('acme.challenges.TLSALPN01Response.probe_cert')
def test_simple_verify_false_on_probe_error(self, mock_probe_cert):
mock_probe_cert.side_effect = errors.Error
self.assertFalse(self.response.simple_verify(
self.chall, self.domain, KEY.public_key()))
class TLSALPN01Test(unittest.TestCase):
def setUp(self):
@ -506,12 +421,8 @@ class TLSALPN01Test(unittest.TestCase):
self.assertRaises(
jose.DeserializationError, TLSALPN01.from_json, self.jmsg)
@mock.patch('acme.challenges.TLSALPN01Response.gen_cert')
def test_validation(self, mock_gen_cert):
mock_gen_cert.return_value = ('cert', 'key')
self.assertEqual(('cert', 'key'), self.msg.validation(
KEY, cert_key=mock.sentinel.cert_key))
mock_gen_cert.assert_called_once_with(key=mock.sentinel.cert_key)
def test_validation(self):
self.assertRaises(NotImplementedError, self.msg.validation, KEY)
class DNSTest(unittest.TestCase):

View file

@ -31,15 +31,6 @@ logger = logging.getLogger(__name__)
_DEFAULT_TLSSNI01_SSL_METHOD = SSL.SSLv23_METHOD # type: ignore
class _DefaultCertSelection(object):
def __init__(self, certs):
self.certs = certs
def __call__(self, connection):
server_name = connection.get_servername()
return self.certs.get(server_name, None)
class SSLSocket(object): # pylint: disable=too-few-public-methods
"""SSL wrapper for sockets.
@ -47,25 +38,12 @@ class SSLSocket(object): # pylint: disable=too-few-public-methods
:ivar dict certs: Mapping from domain names (`bytes`) to
`OpenSSL.crypto.X509`.
:ivar method: See `OpenSSL.SSL.Context` for allowed values.
:ivar alpn_selection: Hook to select negotiated ALPN protocol for
connection.
:ivar cert_selection: Hook to select certificate for connection. If given,
`certs` parameter would be ignored, and therefore must be empty.
"""
def __init__(self, sock, certs=None,
method=_DEFAULT_TLSSNI01_SSL_METHOD, alpn_selection=None,
cert_selection=None):
def __init__(self, sock, certs, method=_DEFAULT_TLSSNI01_SSL_METHOD):
self.sock = sock
self.alpn_selection = alpn_selection
self.certs = certs
self.method = method
if not cert_selection and not certs:
raise ValueError("Neither cert_selection or certs specified.")
if cert_selection and certs:
raise ValueError("Both cert_selection and certs specified.")
if cert_selection is None:
cert_selection = _DefaultCertSelection(certs)
self.cert_selection = cert_selection
def __getattr__(self, name):
return getattr(self.sock, name)
@ -82,19 +60,18 @@ class SSLSocket(object): # pylint: disable=too-few-public-methods
:type connection: :class:`OpenSSL.Connection`
"""
pair = self.cert_selection(connection)
if pair is None:
logger.debug("Certificate selection for server name %s failed, dropping SSL",
connection.get_servername())
server_name = connection.get_servername()
try:
key, cert = self.certs[server_name]
except KeyError:
logger.debug("Server name (%s) not recognized, dropping SSL",
server_name)
return
key, cert = pair
new_context = SSL.Context(self.method)
new_context.set_options(SSL.OP_NO_SSLv2)
new_context.set_options(SSL.OP_NO_SSLv3)
new_context.use_privatekey(key)
new_context.use_certificate(cert)
if self.alpn_selection is not None:
new_context.set_alpn_select_callback(self.alpn_selection)
connection.set_context(new_context)
class FakeConnection(object):
@ -119,8 +96,6 @@ class SSLSocket(object): # pylint: disable=too-few-public-methods
context.set_options(SSL.OP_NO_SSLv2)
context.set_options(SSL.OP_NO_SSLv3)
context.set_tlsext_servername_callback(self._pick_certificate_cb)
if self.alpn_selection is not None:
context.set_alpn_select_callback(self.alpn_selection)
ssl_sock = self.FakeConnection(SSL.Connection(context, sock))
ssl_sock.set_accept_state()
@ -136,9 +111,8 @@ class SSLSocket(object): # pylint: disable=too-few-public-methods
return ssl_sock, addr
def probe_sni(name, host, port=443, timeout=300, # pylint: disable=too-many-arguments
method=_DEFAULT_TLSSNI01_SSL_METHOD, source_address=('', 0),
alpn_protocols=None):
def probe_sni(name, host, port=443, timeout=300,
method=_DEFAULT_TLSSNI01_SSL_METHOD, source_address=('', 0)):
"""Probe SNI server for SSL certificate.
:param bytes name: Byte string to send as the server name in the
@ -150,8 +124,6 @@ def probe_sni(name, host, port=443, timeout=300, # pylint: disable=too-many-argu
:param tuple source_address: Enables multi-path probing (selection
of source interface). See `socket.creation_connection` for more
info. Available only in Python 2.7+.
:param alpn_protocols: Protocols to request using ALPN.
:type alpn_protocols: `list` of `bytes`
:raises acme.errors.Error: In case of any problems.
@ -188,8 +160,6 @@ def probe_sni(name, host, port=443, timeout=300, # pylint: disable=too-many-argu
client_ssl = SSL.Connection(context, client)
client_ssl.set_connect_state()
client_ssl.set_tlsext_host_name(name) # pyOpenSSL>=0.13
if alpn_protocols is not None:
client_ssl.set_alpn_protos(alpn_protocols)
try:
client_ssl.do_handshake()
client_ssl.shutdown()
@ -281,14 +251,12 @@ def _pyopenssl_cert_or_req_san(cert_or_req):
def gen_ss_cert(key, domains, not_before=None,
validity=(7 * 24 * 60 * 60), force_san=True, extensions=None):
validity=(7 * 24 * 60 * 60), force_san=True):
"""Generate new self-signed certificate.
:type domains: `list` of `unicode`
:param OpenSSL.crypto.PKey key:
:param bool force_san:
:param extensions: List of additional extensions to include in the cert.
:type extensions: `list` of `OpenSSL.crypto.X509Extension`
If more than one domain is provided, all of the domains are put into
``subjectAltName`` X.509 extension and first domain is set as the
@ -301,13 +269,10 @@ def gen_ss_cert(key, domains, not_before=None,
cert.set_serial_number(int(binascii.hexlify(os.urandom(16)), 16))
cert.set_version(2)
if extensions is None:
extensions = []
extensions.append(
extensions = [
crypto.X509Extension(
b"basicConstraints", True, b"CA:TRUE, pathlen:0"),
)
]
cert.get_subject().CN = domains[0]
# TODO: what to put into cert.get_subject()?

View file

@ -19,6 +19,7 @@ from acme.magic_typing import List # pylint: disable=unused-import, no-name-in-m
class SSLSocketAndProbeSNITest(unittest.TestCase):
"""Tests for acme.crypto_util.SSLSocket/probe_sni."""
def setUp(self):
self.cert = test_util.load_comparable_cert('rsa2048_cert.pem')
key = test_util.load_pyopenssl_private_key('rsa2048_key.pem')
@ -33,8 +34,7 @@ class SSLSocketAndProbeSNITest(unittest.TestCase):
# six.moves.* | pylint: disable=attribute-defined-outside-init,no-init
def server_bind(self): # pylint: disable=missing-docstring
self.socket = SSLSocket(socket.socket(),
certs)
self.socket = SSLSocket(socket.socket(), certs=certs)
socketserver.TCPServer.server_bind(self)
self.server = _TestServer(('', 0), socketserver.BaseRequestHandler)
@ -66,18 +66,6 @@ class SSLSocketAndProbeSNITest(unittest.TestCase):
# self.assertRaises(errors.Error, self._probe, b'bar')
class SSLSocketTest(unittest.TestCase):
"""Tests for acme.crypto_util.SSLSocket."""
def test_ssl_socket_invalid_arguments(self):
from acme.crypto_util import SSLSocket
with self.assertRaises(ValueError):
_ = SSLSocket(None, {'sni': ('key', 'cert')},
cert_selection=lambda _: None)
with self.assertRaises(ValueError):
_ = SSLSocket(None)
class PyOpenSSLCertOrReqAllNamesTest(unittest.TestCase):
"""Test for acme.crypto_util._pyopenssl_cert_or_req_all_names."""

View file

@ -43,14 +43,7 @@ class TLSServer(socketserver.TCPServer):
def _wrap_sock(self):
self.socket = crypto_util.SSLSocket(
self.socket, cert_selection=self._cert_selection,
alpn_selection=getattr(self, '_alpn_selection', None),
method=self.method)
def _cert_selection(self, connection):
"""Callback selecting certificate for connection."""
server_name = connection.get_servername()
return self.certs.get(server_name, None)
self.socket, certs=self.certs, method=self.method)
def server_bind(self): # pylint: disable=missing-docstring
self._wrap_sock()
@ -154,45 +147,6 @@ class TLSSNI01DualNetworkedServers(BaseDualNetworkedServers):
BaseDualNetworkedServers.__init__(self, TLSSNI01Server, *args, **kwargs)
class BadALPNProtos(Exception):
"""Error raised when cannot negotiate ALPN protocol."""
pass
class TLSALPN01Server(TLSServer, ACMEServerMixin):
"""TLSALPN01 Server."""
ACME_TLS_1_PROTOCOL = b"acme-tls/1"
def __init__(self, server_address, certs, challenge_certs, ipv6=False):
TLSServer.__init__(
self, server_address, BaseRequestHandlerWithLogging, certs=certs,
ipv6=ipv6)
self.challenge_certs = challenge_certs
def _cert_selection(self, connection):
# TODO: We would like to serve challenge cert only if asked for it via
# ALPN. To do this, we need to retrieve the list of protos from client
# hello, but this is currently impossible with openssl [0], and ALPN
# negotiation is done after cert selection.
# Therefore, currently we always return challenge cert, and terminate
# handshake in alpn_selection() if ALPN protos are not what we expect.
# [0] https://github.com/openssl/openssl/issues/4952
server_name = connection.get_servername()
logger.debug("Serving challenge cert for server name %s", server_name)
return self.challenge_certs.get(server_name, None)
def _alpn_selection(self, _connection, alpn_protos):
"""Callback to select alpn protocol."""
if len(alpn_protos) == 1 and alpn_protos[0] == self.ACME_TLS_1_PROTOCOL:
logger.debug("Agreed on %s ALPN", self.ACME_TLS_1_PROTOCOL)
return self.ACME_TLS_1_PROTOCOL
# Raising an exception causes openssl to terminate handshake and
# send fatal tls alert.
logger.debug("Cannot agree on ALPN proto. Got: %s", str(alpn_protos))
raise BadALPNProtos("Got: %s" % str(alpn_protos))
class BaseRequestHandlerWithLogging(socketserver.BaseRequestHandler):
"""BaseRequestHandler with logging."""

View file

@ -10,7 +10,6 @@ import unittest
from six.moves import http_client # pylint: disable=import-error
from six.moves import socketserver # type: ignore # pylint: disable=import-error
from OpenSSL import SSL # type: ignore # https://github.com/python/typeshed/issues/2052
import josepy as jose
import mock
import requests
@ -120,62 +119,6 @@ class HTTP01ServerTest(unittest.TestCase):
self.assertFalse(self._test_http01(add=False))
@unittest.skipUnless(
hasattr(SSL.Connection, "set_alpn_protos") and
hasattr(SSL.Context, "set_alpn_select_callback"),
"pyOpenSSL too old")
class TLSALPN01ServerTest(unittest.TestCase):
"""Test for acme.standalone.TLSALPN01Server."""
def setUp(self):
self.certs = {b'localhost': (
test_util.load_pyopenssl_private_key('rsa2048_key.pem'),
test_util.load_cert('rsa2048_cert.pem'),
)}
# Use different certificate for challenge.
self.challenge_certs = {b'localhost': (
test_util.load_pyopenssl_private_key('rsa1024_key.pem'),
test_util.load_cert('rsa1024_cert.pem'),
)}
from acme.standalone import TLSALPN01Server
self.server = TLSALPN01Server(("", 0), certs=self.certs,
challenge_certs=self.challenge_certs)
# pylint: disable=no-member
self.thread = threading.Thread(target=self.server.serve_forever)
self.thread.start()
def tearDown(self):
self.server.shutdown() # pylint: disable=no-member
self.thread.join()
#TODO: This is not implemented yet, see comments in standalone.py
#def test_certs(self):
# host, port = self.server.socket.getsockname()[:2]
# cert = crypto_util.probe_sni(
# b'localhost', host=host, port=port, timeout=1)
# # Expect normal cert when connecting without ALPN.
# self.assertEqual(jose.ComparableX509(cert),
# jose.ComparableX509(self.certs[b'localhost'][1]))
def test_challenge_certs(self):
host, port = self.server.socket.getsockname()[:2]
cert = crypto_util.probe_sni(
b'localhost', host=host, port=port, timeout=1,
alpn_protocols=[b"acme-tls/1"])
# Expect challenge cert when connecting with ALPN.
self.assertEqual(
jose.ComparableX509(cert),
jose.ComparableX509(self.challenge_certs[b'localhost'][1])
)
def test_bad_alpn(self):
host, port = self.server.socket.getsockname()[:2]
with self.assertRaises(errors.Error):
crypto_util.probe_sni(
b'localhost', host=host, port=port, timeout=1,
alpn_protocols=[b"bad-alpn"])
class BaseDualNetworkedServersTest(unittest.TestCase):
"""Test for acme.standalone.BaseDualNetworkedServers."""

View file

@ -10,8 +10,6 @@ and for the CSR:
openssl req -key rsa2048_key.pem -new -subj '/CN=example.com' -outform DER > csr.der
and for the certificates:
and for the certificate:
openssl req -key rsa2048_key.pem -new -subj '/CN=example.com' -x509 -outform DER > cert.der
openssl req -key rsa2048_key.pem -new -subj '/CN=example.com' -x509 > rsa2048_cert.pem
openssl req -key rsa1024_key.pem -new -subj '/CN=example.com' -x509 > rsa1024_cert.pem
openssl req -key rsa2047_key.pem -new -subj '/CN=example.com' -x509 -outform DER > cert.der

View file

@ -1,13 +0,0 @@
-----BEGIN CERTIFICATE-----
MIIB/TCCAWagAwIBAgIJAOyRIBs3QT8QMA0GCSqGSIb3DQEBCwUAMBYxFDASBgNV
BAMMC2V4YW1wbGUuY29tMB4XDTE4MDQyMzEwMzE0NFoXDTE4MDUyMzEwMzE0NFow
FjEUMBIGA1UEAwwLZXhhbXBsZS5jb20wgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJ
AoGBAJqJ87R8aVwByONxgQA9hwgvQd/QqI1r1UInXhEF2VnEtZGtUWLi100IpIqr
Mq4qusDwNZ3g8cUPtSkvJGs89djoajMDIJP7lQUEKUYnYrI0q755Tr/DgLWSk7iW
l5ezym0VzWUD0/xXUz8yRbNMTjTac80rS5SZk2ja2wWkYlRJAgMBAAGjUzBRMB0G
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-----END CERTIFICATE-----