def do_enclave(args):
"""Executes the `poet enclave` sub-command.
This command reads the appropriate characteristic from the enclave. The
available characteristics are:
measurement - the enclave measurement (also know as mr_enclave)
basename - the enclave basename
The resulting characteristic value is printed to stdout
"""
with PoetEnclaveModuleWrapper(
enclave_module=args.enclave_module,
config_dir=config.get_config_dir(),
data_dir=config.get_data_dir()) as poet_enclave_module:
if args.characteristic == 'measurement':
print(poet_enclave_module.get_enclave_measurement())
elif args.characteristic == 'basename':
print(poet_enclave_module.get_enclave_basename())
else:
AssertionError('Unknown enclave characteristic type: {}'.format(
args.type))
def do_create(args):
"""Executes the `poet registration` subcommand.
This command generates a validator registry transaction and saves it to a
file, whose location is determined by the args. The signup data, generated
by the selected enclave, is also stored in a well-known location.
"""
signer = _read_signer(args.key)
public_key = signer.get_public_key().as_hex()
public_key_hash = sha256(public_key.encode()).hexdigest()
with PoetEnclaveModuleWrapper(
enclave_module=args.enclave_module,
config_dir=config.get_config_dir(),
data_dir=config.get_data_dir()) as poet_enclave_module:
signup_info = SignupInfo.create_signup_info(
poet_enclave_module=poet_enclave_module,
originator_public_key_hash=public_key_hash,
nonce=SignupInfo.block_id_to_nonce(args.block))
print('Writing key state for PoET public key: {}...{}'.format(
signup_info.poet_public_key[:8], signup_info.poet_public_key[-8:]))
# Store the newly-created PoET key state, associating it with its
# corresponding public key
poet_key_state_store = \
PoetKeyStateStore(
data_dir=config.get_data_dir(),
validator_id=public_key)
poet_key_state_store[signup_info.poet_public_key] = \
PoetKeyState(
sealed_signup_data=signup_info.sealed_signup_data,
has_been_refreshed=False)
# Create the validator registry payload
payload = \
vr_pb.ValidatorRegistryPayload(
verb='register',
name='validator-{}'.format(public_key[:8]),
id=public_key,
signup_info=vr_pb.SignUpInfo(
poet_public_key=signup_info.poet_public_key,
proof_data=signup_info.proof_data,
anti_sybil_id=signup_info.anti_sybil_id,
nonce=SignupInfo.block_id_to_nonce(args.block)))
serialized = payload.SerializeToString()
# Create the address that will be used to look up this validator
# registry transaction. Seems like a potential for refactoring..
validator_entry_address = \
VR_NAMESPACE + sha256(public_key.encode()).hexdigest()
# Create a transaction header and transaction for the validator
# registry update amd then hand it off to the batch publisher to
# send out.
output_addresses = [validator_entry_address, VALIDATOR_MAP_ADDRESS]
input_addresses = \
output_addresses + \
[SettingsView.setting_address('sawtooth.poet.report_public_key_pem'),
SettingsView.setting_address('sawtooth.poet.'
'valid_enclave_measurements'),
SettingsView.setting_address('sawtooth.poet.valid_enclave_basenames')]
header = \
txn_pb.TransactionHeader(
signer_public_key=public_key,
family_name='sawtooth_validator_registry',
family_version='1.0',
inputs=input_addresses,
outputs=output_addresses,
dependencies=[],
payload_sha512=sha512(serialized).hexdigest(),
batcher_public_key=public_key,
nonce=time.time().hex().encode()).SerializeToString()
signature = signer.sign(header)
transaction = \
txn_pb.Transaction(
header=header,
payload=serialized,
header_signature=signature)
batch = _create_batch(signer, [transaction])
batch_list = batch_pb.BatchList(batches=[batch])
try:
print('Generating {}'.format(args.output))
with open(args.output, 'wb') as batch_file:
batch_file.write(batch_list.SerializeToString())
except IOError as e:
raise CliException('Unable to write to batch file: {}'.format(str(e)))