def __init__(
self,
private_key: UmbralPrivateKey,
hash_algorithm: Type[HashAlgorithm] = DEFAULT_HASH_ALGORITHM
) -> None:
self.__cryptography_private_key = private_key.to_cryptography_privkey()
self.curve = private_key.params.curve
self.hash_algorithm = hash_algorithm
def ecdsa_sign(message: bytes, private_key: UmbralPrivateKey) -> bytes:
"""
Accepts a hashed message and signs it with the private key given.
:param message: Message to hash and sign
:param private_key: Private key to sign with
:return: signature
"""
signing_key = private_key.to_cryptography_privkey()
signature_der_bytes = signing_key.sign(message, ec.ECDSA(SHA256))
return signature_der_bytes
def __init__(self, private_key: UmbralPrivateKey) -> None:
self.__cryptography_private_key = private_key.to_cryptography_privkey()
self._curve = private_key.params.curve
def __init__(self, private_key: UmbralPrivateKey):
self.__cryptography_private_key = private_key.to_cryptography_privkey()
