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import unittest
from fido2.server import Fido2Server, U2FFido2Server, verify_app_id
from fido2.webauthn import (
CollectedClientData,
PublicKeyCredentialRpEntity,
UserVerificationRequirement,
AttestedCredentialData,
AuthenticatorData,
)
from fido2.utils import websafe_encode
from .test_ctap2 import _ATT_CRED_DATA, _CRED_ID
from .utils import U2FDevice
class TestAppId(unittest.TestCase):
def test_valid_ids(self):
self.assertTrue(
verify_app_id("https://example.com", "https://register.example.com")
)
self.assertTrue(
verify_app_id("https://example.com", "https://fido.example.com")
)
self.assertTrue(
verify_app_id("https://example.com", "https://www.example.com:444")
)
self.assertTrue(
verify_app_id(
"https://companyA.hosting.example.com",
"https://fido.companyA.hosting.example.com",
)
)
self.assertTrue(
verify_app_id(
"https://companyA.hosting.example.com",
"https://xyz.companyA.hosting.example.com",
)
)
def test_invalid_ids(self):
self.assertFalse(verify_app_id("https://example.com", "http://example.com"))
self.assertFalse(verify_app_id("https://example.com", "http://www.example.com"))
self.assertFalse(
verify_app_id("https://example.com", "https://example-test.com")
)
self.assertFalse(
verify_app_id(
"https://companyA.hosting.example.com", "https://register.example.com"
)
)
self.assertFalse(
verify_app_id(
"https://companyA.hosting.example.com",
"https://companyB.hosting.example.com",
)
)
def test_effective_tld_names(self):
self.assertFalse(
verify_app_id("https://appspot.com", "https://foo.appspot.com")
)
self.assertFalse(verify_app_id("https://co.uk", "https://example.co.uk"))
class TestPublicKeyCredentialRpEntity(unittest.TestCase):
def test_id_hash(self):
rp = PublicKeyCredentialRpEntity("Example", "example.com")
rp_id_hash = (
b"\xa3y\xa6\xf6\xee\xaf\xb9\xa5^7\x8c\x11\x804\xe2u\x1eh/"
b"\xab\x9f-0\xab\x13\xd2\x12U\x86\xce\x19G"
)
self.assertEqual(rp.id_hash, rp_id_hash)
USER = {"id": b"user_id", "name": "A. User"}
class TestFido2Server(unittest.TestCase):
def test_register_begin_rp(self):
rp = PublicKeyCredentialRpEntity("Example", "example.com")
server = Fido2Server(rp)
request, state = server.register_begin(USER)
self.assertEqual(
request["publicKey"]["rp"], {"id": "example.com", "name": "Example"}
)
def test_register_begin_custom_challenge(self):
rp = PublicKeyCredentialRpEntity("Example", "example.com")
server = Fido2Server(rp)
challenge = b"1234567890123456"
request, state = server.register_begin(USER, challenge=challenge)
self.assertEqual(request["publicKey"]["challenge"], websafe_encode(challenge))
def test_register_begin_custom_challenge_too_short(self):
rp = PublicKeyCredentialRpEntity("Example", "example.com")
server = Fido2Server(rp)
challenge = b"123456789012345"
with self.assertRaises(ValueError):
request, state = server.register_begin(USER, challenge=challenge)
def test_authenticate_complete_invalid_signature(self):
rp = PublicKeyCredentialRpEntity("Example", "example.com")
server = Fido2Server(rp)
state = {
"challenge": "GAZPACHO!",
"user_verification": UserVerificationRequirement.PREFERRED,
}
client_data = CollectedClientData.create(
CollectedClientData.TYPE.GET,
"GAZPACHO!",
"https://example.com",
)
_AUTH_DATA = bytes.fromhex(
"A379A6F6EEAFB9A55E378C118034E2751E682FAB9F2D30AB13D2125586CE1947010000001D"
)
with self.assertRaisesRegex(ValueError, "Invalid signature."):
server.authenticate_complete(
state,
[AttestedCredentialData(_ATT_CRED_DATA)],
_CRED_ID,
client_data,
AuthenticatorData(_AUTH_DATA),
b"INVALID",
)
class TestU2FFido2Server(unittest.TestCase):
def test_u2f(self):
rp = PublicKeyCredentialRpEntity("Example", "example.com")
app_id = b"https://example.com"
server = U2FFido2Server(app_id=app_id.decode("ascii"), rp=rp)
state = {
"challenge": "GAZPACHO!",
"user_verification": UserVerificationRequirement.PREFERRED,
}
client_data = CollectedClientData.create(
CollectedClientData.TYPE.GET,
"GAZPACHO!",
"https://example.com",
)
param = b"TOMATO GIVES "
device = U2FDevice(param, app_id)
auth_data = AttestedCredentialData.from_ctap1(param, device.public_key_bytes)
authenticator_data, signature = device.sign(client_data)
server.authenticate_complete(
state,
[auth_data],
device.credential_id,
client_data,
authenticator_data,
signature,
)
def test_u2f_facets(self):
rp = PublicKeyCredentialRpEntity("Example", "example.com")
app_id = b"https://www.example.com/facets.json"
def verify_u2f_origin(origin):
return origin in ("https://oauth.example.com", "https://admin.example.com")
server = U2FFido2Server(
app_id=app_id.decode("ascii"), rp=rp, verify_u2f_origin=verify_u2f_origin
)
state = {
"challenge": "GAZPACHO!",
"user_verification": UserVerificationRequirement.PREFERRED,
}
client_data = CollectedClientData.create(
CollectedClientData.TYPE.GET,
"GAZPACHO!",
"https://oauth.example.com",
)
param = b"TOMATO GIVES "
device = U2FDevice(param, app_id)
auth_data = AttestedCredentialData.from_ctap1(param, device.public_key_bytes)
authenticator_data, signature = device.sign(client_data)
server.authenticate_complete(
state,
[auth_data],
device.credential_id,
client_data,
authenticator_data,
signature,
)
# Now with something not whitelisted
client_data = CollectedClientData.create(
CollectedClientData.TYPE.GET,
"GAZPACHO!",
"https://publicthingy.example.com",
)
authenticator_data, signature = device.sign(client_data)
with self.assertRaisesRegex(
ValueError, "Invalid origin in CollectedClientData."
):
server.authenticate_complete(
state,
[auth_data],
device.credential_id,
client_data,
authenticator_data,
signature,
)
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