76 lines
1.6 KiB
Python
76 lines
1.6 KiB
Python
|
from abc import ABC, abstractmethod
|
||
|
|
from enum import Enum, unique
|
||
|
|
|
||
|
|
from .pb import crypto_pb2 as protobuf
|
||
|
|
|
||
|
|
|
||
|
|
@unique
|
||
|
|
class KeyType(Enum):
|
||
|
|
RSA = 0
|
||
|
|
Ed25519 = 1
|
||
|
|
Secp256k1 = 2
|
||
|
|
ECDSA = 3
|
||
|
|
|
||
|
|
|
||
|
|
class Key:
|
||
|
|
"""
|
||
|
|
A ``Key`` represents a cryptographic key.
|
||
|
|
"""
|
||
|
|
|
||
|
|
@abstractmethod
|
||
|
|
def to_bytes(self) -> bytes:
|
||
|
|
"""
|
||
|
|
Returns the byte representation of this key.
|
||
|
|
"""
|
||
|
|
...
|
||
|
|
|
||
|
|
@abstractmethod
|
||
|
|
def get_type(self) -> KeyType:
|
||
|
|
"""
|
||
|
|
Returns the ``KeyType`` for ``self``.
|
||
|
|
"""
|
||
|
|
...
|
||
|
|
|
||
|
|
|
||
|
|
class PublicKey(ABC, Key):
|
||
|
|
"""
|
||
|
|
A ``PublicKey`` represents a cryptographic public key.
|
||
|
|
"""
|
||
|
|
|
||
|
|
@abstractmethod
|
||
|
|
def verify(self, data: bytes, signature: bytes) -> bool:
|
||
|
|
"""
|
||
|
|
Verify that ``signature`` is the cryptographic signature of the hash of ``data``.
|
||
|
|
"""
|
||
|
|
...
|
||
|
|
|
||
|
|
def serialize_to_protobuf(self) -> protobuf.PublicKey:
|
||
|
|
_type = self.get_type()
|
||
|
|
data = self.to_bytes()
|
||
|
|
protobuf_key = protobuf.PublicKey()
|
||
|
|
protobuf_key.key_type = _type.value
|
||
|
|
protobuf_key.data = data
|
||
|
|
return protobuf_key
|
||
|
|
|
||
|
|
|
||
|
|
class PrivateKey(ABC, Key):
|
||
|
|
"""
|
||
|
|
A ``PrivateKey`` represents a cryptographic private key.
|
||
|
|
"""
|
||
|
|
|
||
|
|
@abstractmethod
|
||
|
|
def sign(self, data: bytes) -> bytes:
|
||
|
|
...
|
||
|
|
|
||
|
|
@abstractmethod
|
||
|
|
def get_public_key(self) -> PublicKey:
|
||
|
|
...
|
||
|
|
|
||
|
|
def serialize_to_protobuf(self) -> protobuf.PrivateKey:
|
||
|
|
_type = self.get_type()
|
||
|
|
data = self.to_bytes()
|
||
|
|
protobuf_key = protobuf.PrivateKey()
|
||
|
|
protobuf_key.key_type = _type.value
|
||
|
|
protobuf_key.data = data
|
||
|
|
return protobuf_key
|