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19 changes: 17 additions & 2 deletions kms/attestations/verify_attestation.py
Original file line number Diff line number Diff line change
Expand Up @@ -14,13 +14,14 @@
# See the License for the specific language governing permissions and
# limitations under the License.

"""This sample demonstrates how to verify HSM attestations using certificate
bundles obtained from Cloud HSM.
"""This application verifies HSM attestations using certificate bundles
obtained from Cloud HSM.

For more information, visit https://cloud.google.com/kms/docs/attest-key.
"""

# [START verify_attestations]
import argparse
import gzip

from cryptography import exceptions
Expand Down Expand Up @@ -69,3 +70,17 @@ def verify(attestation_file, bundle_file):
continue
return False
# [END verify_attestations]


if __name__ == '__main__':
parser = argparse.ArgumentParser(
description=__doc__)
parser.add_argument('attestation_file', help="Name of attestation file.")
parser.add_argument('bundle_file', help="Name of certificate bundle file.")

args = parser.parse_args()

if verify(args.attestation_file, args.bundle_file):
print('Signature verified.')
else:
print('Signature verification failed.')