python-fido2/tests/test_mds3.py

309 lines
20 KiB
Python

from fido2.mds3 import parse_blob, MdsAttestationVerifier
from base64 import b64decode
# Example data from:
# https://fidoalliance.org/specs/mds/fido-metadata-service-v3.0-ps-20210518.html#examples
EXAMPLE_CA = b64decode(
"""
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"""
)
# NOTE: Signature changed to be properly ASN.1 formatted!
EXAMPLE_BLOB = """
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""".replace(
"\n", ""
).encode()
AAGUID = bytes.fromhex("0132d110bf4e4208a403ab4f5f12efe5")
def test_parse_blob():
data = parse_blob(EXAMPLE_BLOB, EXAMPLE_CA)
assert data.no == 15
assert len(data.entries) == 2
def test_find_by_aaguid():
data = parse_blob(EXAMPLE_BLOB, EXAMPLE_CA)
mds = MdsAttestationVerifier(data)
entry = mds.find_entry_by_aaguid(AAGUID)
assert (
entry.metadata_statement.description
== "FIDO Alliance Sample FIDO2 Authenticator"
)
def test_find_by_aaguid_miss():
data = parse_blob(EXAMPLE_BLOB, EXAMPLE_CA)
mds = MdsAttestationVerifier(data)
entry = mds.find_entry_by_aaguid(bytes.fromhex("0102030405060708090a0b0c0d0e0f"))
assert entry is None
def test_find_by_chain_miss():
data = parse_blob(EXAMPLE_BLOB, EXAMPLE_CA)
mds = MdsAttestationVerifier(data)
entry = mds.find_entry_by_chain([EXAMPLE_CA])
assert entry is None
def test_filter_entries():
data = parse_blob(EXAMPLE_BLOB, EXAMPLE_CA)
mds = MdsAttestationVerifier(data, entry_filter=lambda e: e.aaguid != AAGUID)
entry = mds.find_entry_by_aaguid(AAGUID)
assert entry is None
mds = MdsAttestationVerifier(data, entry_filter=lambda e: e.aaguid == AAGUID)
assert mds.find_entry_by_aaguid(AAGUID)
def test_lookup_filter_does_not_affect_find_entry_by_aaguid():
data = parse_blob(EXAMPLE_BLOB, EXAMPLE_CA)
mds = MdsAttestationVerifier(
data, attestation_filter=lambda e, _: e.aaguid != AAGUID
)
assert mds.find_entry_by_aaguid(AAGUID)