def sign_ccl_transaction(payload, contract, enclave_signing_key):
hash_input = make_ccl_transaction_hash_input(
payload, contract.contract_code_hash,
contract.pdo_contract_creator_pem_key)
context = create_context('secp256k1')
private_key = Secp256k1PrivateKey.from_hex(enclave_signing_key)
return context.sign(hash_input, private_key)
def get_default_enclave_signing_public_key_as_hex(self):
context = create_context('secp256k1')
private_key = Secp256k1PrivateKey.from_hex(
self.get_default_enclave_signing_private_key_as_hex())
public_key = context.get_public_key(private_key)
return public_key.as_hex()
def secp256k1_sign(message, private_key_str):
context = create_context('secp256k1')
private_key = Secp256k1PrivateKey.from_hex(private_key_str)
try:
if isinstance(message, bytes):
return context.sign(message, private_key)
else:
return context.sign(message.encode(), private_key)
except:
return None
def get_public_key_as_hex(private_key_as_hex):
private_key = Secp256k1PrivateKey.from_hex(private_key_as_hex)
signer = CryptoFactory(create_context('secp256k1')).new_signer(private_key)
return signer.get_public_key().as_hex()
def generate_private_key_as_hex():
private_key = Secp256k1PrivateKey.new_random()
return private_key.as_hex()