55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
from typing import Tuple
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import coincurve
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from libp2p.crypto.keys import KeyType, PrivateKey, PublicKey
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class Secp256k1PublicKey(PublicKey):
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def __init__(self, impl: coincurve.PublicKey) -> None:
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self.impl = impl
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def to_bytes(self) -> bytes:
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return self.impl.format()
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def get_type(self) -> KeyType:
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return KeyType.Secp256k1
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def verify(self, data: bytes, signature: bytes) -> bool:
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raise NotImplementedError
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class Secp256k1PrivateKey(PrivateKey):
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def __init__(self, impl: coincurve.PrivateKey) -> None:
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self.impl = impl
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@classmethod
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def new(cls, secret: bytes = None) -> "Secp256k1PrivateKey":
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private_key_impl = coincurve.PrivateKey()
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return cls(private_key_impl)
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def to_bytes(self) -> bytes:
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return self.impl.secret
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def get_type(self) -> KeyType:
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return KeyType.Secp256k1
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def sign(self, data: bytes) -> bytes:
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raise NotImplementedError
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def get_public_key(self) -> PublicKey:
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public_key_impl = coincurve.PublicKey.from_secret(self.impl.secret)
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return Secp256k1PublicKey(public_key_impl)
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def create_new_key_pair(secret: bytes = None) -> Tuple[PrivateKey, PublicKey]:
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"""
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Returns a new Secp256k1 keypair derived from the provided ``secret``,
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a sequence of bytes corresponding to some integer between 0 and the group order.
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A valid secret is created if ``None`` is passed.
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"""
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private_key = Secp256k1PrivateKey.new()
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public_key = private_key.get_public_key()
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return private_key, public_key
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