1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
"""
Testing CryptoBackendXMLSecurity with SoftHSM as backend
"""
# Command to convert test.pem to PKCS#8 PEM format readable by softhsm :
#
# openssl pkcs8 -topk8 -inform PEM -outform PEM -in test.key -out test.key.p8
# -nocrypt
#
__author__ = 'leifj' # based on p11_test from pyXMLSecurity
import logging
import os
import traceback
import subprocess
import tempfile
import pytest
from pathutils import full_path
from saml2 import sigver
from saml2 import class_name
from saml2 import time_util
from saml2 import saml
from saml2.s_utils import factory, do_attribute_statement
#xmlsec = pytest.importorskip("xmlsec")
def _find_alts(alts):
for a in alts:
if os.path.exists(a):
return a
return None
PUB_KEY = full_path("test.pem")
PRIV_KEY = full_path("test.key.p8")
P11_MODULES = ['/usr/lib/libsofthsm.so', '/usr/lib/softhsm/libsofthsm.so']
P11_MODULE = _find_alts(P11_MODULES)
P11_ENGINE = '/usr/lib/engines/engine_pkcs11.so'
def _eq(l1, l2):
return set(l1) == set(l2)
class FakeConfig():
"""
Configuration parameters for signature validation test cases.
"""
def __init__(self, pub_key = PUB_KEY):
self.xmlsec_binary = None
self.crypto_backend = 'XMLSecurity'
self.only_use_keys_in_metadata = False
self.metadata = None
self.cert_file = pub_key
self.key_file = "pkcs11://%s:0/test?pin=secret1" % P11_MODULE
self.debug = False
self.cert_handler_extra_class = None
self.generate_cert_info = False
self.generate_cert_info = False
self.tmp_cert_file = None
self.tmp_key_file = None
self.validate_certificate = False
class TestPKCS11():
def __init__(self):
self.private_keyspec = None
self.public_keyspec = None
self.p11_test_files = []
self.softhsm_conf = None
self.softhsm_db = None
self.configured = False
self.sec = None
self._assertion = None
def setup_class(self):
logging.debug("Creating test pkcs11 token using softhsm")
try:
self.softhsm_db = self._tf()
self.softhsm_conf = self._tf()
self.signer_cert_pem = self._tf()
self.openssl_conf = self._tf()
self.signer_cert_der = self._tf()
logging.debug("Generating softhsm.conf")
with open(self.softhsm_conf, "w") as f:
f.write("#Generated by pysaml2 cryptobackend test\n0:%s\n" % self.softhsm_db)
logging.debug("Initializing the token")
self._p(['softhsm',
'--slot', '0',
'--label', 'test',
'--init-token',
'--pin', 'secret1',
'--so-pin', 'secret2'])
logging.debug("Importing test key {!r} into SoftHSM".format(PRIV_KEY))
self._p(['softhsm',
'--slot', '0',
'--label', 'test',
'--import', PRIV_KEY,
'--id', 'a1b2',
'--pin', 'secret1',
'--so-pin', 'secret2'])
logging.debug("Transforming PEM certificate to DER")
self._p(['openssl', 'x509',
'-inform', 'PEM',
'-outform', 'DER',
'-in', PUB_KEY,
'-out', self.signer_cert_der])
logging.debug("Importing certificate into token")
self._p(['pkcs11-tool',
'--module', P11_MODULE,
'-l',
'--slot', '0',
'--id', 'a1b2',
'--label', 'test',
'-y', 'cert',
'-w', self.signer_cert_der,
'--pin', 'secret1'])
# list contents of SoftHSM
self._p(['pkcs11-tool',
'--module', P11_MODULE,
'-l',
'--pin', 'secret1', '-O'])
self._p(['pkcs11-tool',
'--module', P11_MODULE,
'-l',
'--pin', 'secret1', '-T'])
self._p(['pkcs11-tool',
'--module', P11_MODULE,
'-l',
'--pin', 'secret1', '-L'])
self.sec = sigver.security_context(FakeConfig(pub_key = PUB_KEY))
self._assertion = factory(saml.Assertion,
version="2.0",
id="11111",
issue_instant="2009-10-30T13:20:28Z",
signature=sigver.pre_signature_part("11111", self.sec.my_cert, 1),
attribute_statement=do_attribute_statement(
{("", "", "surName"): ("Foo", ""),
("", "", "givenName"): ("Bar", ""),
})
)
self.configured = True
except Exception as ex:
print("-" * 64)
traceback.print_exc()
print("-" * 64)
logging.warning("PKCS11 tests disabled: unable to initialize test token: %s" % ex)
raise
def teardown_class(self):
"""
Remove temporary files created in setup_class.
"""
for o in self.p11_test_files:
if os.path.exists(o):
os.unlink(o)
self.configured = False
self.p11_test_files = []
def _tf(self):
f = tempfile.NamedTemporaryFile(delete=False)
self.p11_test_files.append(f.name)
return f.name
def _p(self, args):
env = {}
if self.softhsm_conf is not None:
env['SOFTHSM_CONF'] = self.softhsm_conf
#print("env SOFTHSM_CONF=%s " % softhsm_conf +" ".join(args))
logging.debug("Environment {!r}".format(env))
logging.debug("Executing {!r}".format(args))
args = ['ls']
proc = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env)
out, err = proc.communicate()
if err is not None and len(err) > 0:
logging.error(err)
if out is not None and len(out) > 0:
logging.debug(out)
rv = proc.wait()
if rv:
raise RuntimeError("command exited with code != 0: %d" % rv)
def test_SAML_sign_with_pkcs11(self):
"""
Test signing a SAML assertion using PKCS#11 and then verifying it.
"""
os.environ['SOFTHSM_CONF'] = self.softhsm_conf
ass = self._assertion
print(ass)
sign_ass = self.sec.sign_assertion("%s" % ass, node_id=ass.id)
#print(sign_ass)
sass = saml.assertion_from_string(sign_ass)
#print(sass)
assert _eq(sass.keyswv(), ['attribute_statement', 'issue_instant',
'version', 'signature', 'id'])
assert sass.version == "2.0"
assert sass.id == "11111"
assert time_util.str_to_time(sass.issue_instant)
print("Crypto version : %s" % (self.sec.crypto.version()))
item = self.sec.check_signature(sass, class_name(sass), sign_ass)
assert isinstance(item, saml.Assertion)
print("Test PASSED")
def test_xmlsec_cryptobackend():
t = TestPKCS11()
t.setup_class()
t.test_SAML_sign_with_pkcs11()
if __name__ == "__main__":
test_xmlsec_cryptobackend()
|
