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#
# This file is part of pyasn1-modules software.
#
# Created by Russ Housley
# Copyright (c) 2019, Vigil Security, LLC
# License: http://snmplabs.com/pyasn1/license.html
#
import sys
from pyasn1.codec.der.decoder import decode as der_decode
from pyasn1.codec.der.encoder import encode as der_encode
from pyasn1_modules import pem
from pyasn1_modules import rfc3114
from pyasn1_modules import rfc5035
from pyasn1_modules import rfc5083
from pyasn1_modules import rfc5084
from pyasn1_modules import rfc5280
from pyasn1_modules import rfc5652
from pyasn1_modules import rfc5755
try:
import unittest2 as unittest
except ImportError:
import unittest
class SecurityLabelTestCase(unittest.TestCase):
pem_text = """\
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uuDSOoaUIz+G9aemAE0ldpo1c0avNGa7BtynUTHmwosD6Sjfj0epAg9OnMedOjbr
"""
def testDerCodec(self):
layers = { }
layers.update(rfc5652.cmsContentTypesMap)
getNextLayer = {
rfc5652.id_ct_contentInfo: lambda x: x['contentType'],
rfc5652.id_signedData: lambda x: x['encapContentInfo']['eContentType'],
rfc5083.id_ct_authEnvelopedData: lambda x: None
}
getNextSubstrate = {
rfc5652.id_ct_contentInfo: lambda x: x['content'],
rfc5652.id_signedData: lambda x: x['encapContentInfo']['eContent'],
rfc5083.id_ct_authEnvelopedData: lambda x: None
}
substrate = pem.readBase64fromText(self.pem_text)
next_layer = rfc5652.id_ct_contentInfo
while next_layer:
asn1Object, rest = der_decode(substrate, asn1Spec=layers[next_layer])
assert not rest
assert asn1Object.prettyPrint()
assert der_encode(asn1Object) == substrate
if next_layer == rfc5652.id_signedData:
attrs = asn1Object['signerInfos'][0]['signedAttrs']
certs = asn1Object['certificates']
substrate = getNextSubstrate[next_layer](asn1Object)
next_layer = getNextLayer[next_layer](asn1Object)
spid = rfc3114.id_tsp_TEST_Whirlpool
catid = rfc3114.id_tsp_TEST_Whirlpool_Categories
conf = rfc3114.Whirlpool_SecurityClassification(value='whirlpool-confidential')
assert catid in rfc5755.securityCategoryMap.keys()
assert rfc5755.id_at_clearance in rfc5280.certificateAttributesMap.keys()
assert rfc5280.id_ce_subjectDirectoryAttributes in rfc5280.certificateExtensionsMap.keys()
security_label_okay = False
for attr in attrs:
if attr['attrType'] == rfc5035.id_aa_securityLabel:
esssl, rest = der_decode(attr['attrValues'][0],
asn1Spec=rfc5035.ESSSecurityLabel())
assert not rest
assert esssl.prettyPrint()
assert der_encode(esssl) == attr['attrValues'][0]
assert esssl['security-policy-identifier'] == spid
assert esssl['security-classification'] == conf
for cat in esssl['security-categories']:
if cat['type'] == catid:
scv, rest = der_decode(cat['value'],
asn1Spec=rfc3114.SecurityCategoryValues())
assert not rest
assert scv.prettyPrint()
assert der_encode(scv) == cat['value']
for scv_str in scv:
assert 'USE ONLY' in scv_str
security_label_okay = True
assert security_label_okay
clearance_okay = False
for cert_choice in certs:
for extn in cert_choice['certificate']['tbsCertificate']['extensions']:
if extn['extnID'] == rfc5280.id_ce_subjectDirectoryAttributes:
ev, rest = der_decode(extn['extnValue'],
asn1Spec=rfc5280.certificateExtensionsMap[extn['extnID']])
assert not rest
assert ev.prettyPrint()
assert der_encode(ev) == extn['extnValue']
for attr in ev:
if attr['type'] == rfc5755.id_at_clearance:
av, rest = der_decode(attr['values'][0],
asn1Spec=rfc5280.certificateAttributesMap[attr['type']])
assert av['policyId'] == spid
for cat in av['securityCategories']:
assert cat['type'] == catid
scv, rest = der_decode(cat['value'],
asn1Spec=rfc5755.securityCategoryMap[cat['type']])
assert not rest
assert scv.prettyPrint()
assert der_encode(scv) == cat['value']
for scv_str in scv:
assert 'USE ONLY' in scv_str
clearance_okay = True
assert clearance_okay
suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
if __name__ == '__main__':
import sys
result = unittest.TextTestRunner(verbosity=2).run(suite)
sys.exit(not result.wasSuccessful())
|
