def test_sign_resign(
image_config: ImageConfig,
image_config_signed: ImageConfig,
config_digest_canonical: str,
config_digest_signed_canonical: str,
signature: str,
):
"""Test configuration resigning for signed and unsigned configurations."""
signer = FakeSigner()
assert image_config.sign(signer,
SignatureTypes.RESIGN) == signer.signature_value
assert (image_config_signed.sign(
signer, SignatureTypes.RESIGN) == signer.signature_value)
# Previously unsigned configurations should now contain the new signature.
assert b"BEGIN FAKE SIGNATURE" in image_config.get_config()
signatures = image_config.get_signature_list()
assert len(signatures) == 1
assert signatures[0]["digest"] == config_digest_canonical
assert signatures[0]["signature"] == signer.signature_value
# Previously signed configurations should now contain (only) the new signature.
assert b"BEGIN FAKE SIGNATURE" in image_config_signed.get_config()
assert b"BEGIN PGP SIGNATURE" not in image_config_signed.get_config()
signatures_signed = image_config_signed.get_signature_list()
assert len(signatures_signed) == 1
assert signatures[0]["digest"] == config_digest_canonical
assert signatures[0]["signature"] == signer.signature_value
def test_sign_endorse(
image_config: ImageConfig,
image_config_signed: ImageConfig,
config_digest_canonical: str,
config_digest_signed_canonical: str,
signature: str,
):
"""Test configuration endorsement for signed and unsigned configurations."""
signer = FakeSigner()
assert image_config.sign(signer,
SignatureTypes.ENDORSE) == signer.signature_value
assert (image_config_signed.sign(
signer, SignatureTypes.ENDORSE) == signer.signature_value)
# Previously unsigned configurations should now contain the new signature.
assert b"BEGIN FAKE SIGNATURE" in image_config.get_config()
signatures = image_config.get_signature_list()
assert len(signatures) == 1
assert signatures[0]["digest"] == config_digest_canonical
assert signatures[0]["signature"] == signer.signature_value
# Previously signed configurations should now contain the original signature(s) and the new signature.
assert b"BEGIN FAKE SIGNATURE" in image_config_signed.get_config()
assert b"BEGIN PGP SIGNATURE" in image_config_signed.get_config()
signatures_signed = image_config_signed.get_signature_list()
assert len(signatures_signed) == 2
assert signatures_signed[0]["digest"] == config_digest_canonical
assert signatures_signed[0]["signature"] == signature
assert signatures_signed[1]["digest"] == config_digest_signed_canonical
assert signatures_signed[1]["signature"] == signer.signature_value
def test_get_config(
image_config: ImageConfig,
image_config_signed: ImageConfig,
json_bytes: bytes,
json_bytes_signed: bytes,
):
"""Test get_config() pass-through for signed and unsigned configurations."""
assert image_config.get_config() == json_bytes
assert image_config_signed.get_config() == json_bytes_signed
def test_unsign(image_config: ImageConfig, image_config_signed: ImageConfig):
"""Test configuration unsigning for signed and unsigned configurations."""
image_config.unsign()
image_config_signed.unsign()
# Previously unsigned configurations should still contain no signature.
assert b"BEGIN FAKE SIGNATURE" not in image_config.get_config()
# Previously signed configurations should now contain no signature(s).
assert b"BEGIN FAKE SIGNATURE" not in image_config_signed.get_config()
assert b"BEGIN PGP SIGNATURE" not in image_config_signed.get_config()
def test_sign(image_config: ImageConfig, image_config_signed: ImageConfig):
"""Test configuration signing for signed and unsigned configurations."""
signer = FakeSigner()
assert image_config.sign(signer) == signer.signature_value
assert image_config_signed.sign(signer) == signer.signature_value
# Previously unsigned configurations should now contain the new signature.
assert b"BEGIN FAKE SIGNATURE" in image_config.get_config()
# Previously signed configurations should now contain the original signature(s) and the new signature.
assert b"BEGIN FAKE SIGNATURE" in image_config_signed.get_config()
assert b"BEGIN PGP SIGNATURE" in image_config_signed.get_config()
def test_acceptance_sign_unsign_symmetry(image_config: ImageConfig,
image_config_signed: ImageConfig):
"""Tests that sign and unsign are (mostly) symmetric operations."""
config_digest = image_config.get_config_digest()
# 1. Sign
signer = FakeSigner()
assert image_config.sign(signer) == signer.signature_value
assert image_config_signed.sign(signer) == signer.signature_value
# Previously unsigned configurations should now contain the new signature.
assert b"BEGIN FAKE SIGNATURE" in image_config.get_config()
# Previously signed configurations should now contain the original signature(s) and the new signature.
assert b"BEGIN FAKE SIGNATURE" in image_config_signed.get_config()
assert b"BEGIN PGP SIGNATURE" in image_config_signed.get_config()
# 2. Unsign
image_config.unsign()
image_config_signed.unsign()
# Configurations where we added the first signature should be reverted.
assert b"BEGIN FAKE SIGNATURE" not in image_config.get_config()
# Configurations where we appended a signature should now contain no signature(s).
assert b"BEGIN FAKE SIGNATURE" not in image_config_signed.get_config()
assert b"BEGIN PGP SIGNATURE" not in image_config_signed.get_config()
assert image_config.get_config_digest() == config_digest
def test_minimal():
"""Test minimal image configuration (for non-conformant labels)k."""
# Note: At a minimum, [Cc]onfig key must exist with non-null value
image_config = ImageConfig(b'{"Config":{}}')
config_digest_canonical = image_config.get_config_digest_canonical()
signer = FakeSigner()
assert image_config.sign(signer) == signer.signature_value
# A signature should always be able to be added ...
assert b"BEGIN FAKE SIGNATURE" in image_config.get_config()
signatures = image_config.get_signature_list()
assert len(signatures) == 1
assert signatures[0]["digest"] == config_digest_canonical
assert signatures[0]["signature"] == signer.signature_value