py-libp2p/libp2p/crypto/rsa.py
mhchia 921bfb65cc
Verify the remote pubkey and peer_id
- Add `from_bytes` in RSAPublicKey and Secp256k1PublicKey
- Add `pubkey_from_protobuf` to parse pubkey from protobuf
- Verify key and peer_id in `InsecureSession.run_handshake`
2019-08-22 22:53:48 +08:00

61 lines
1.7 KiB
Python

import Crypto.PublicKey.RSA as RSA
from Crypto.PublicKey.RSA import RsaKey
from libp2p.crypto.keys import KeyPair, KeyType, PrivateKey, PublicKey
class RSAPublicKey(PublicKey):
def __init__(self, impl: RsaKey) -> None:
self.impl = impl
def to_bytes(self) -> bytes:
return self.impl.export_key("DER")
@classmethod
def from_bytes(cls, key_bytes: bytes) -> "RSAPublicKey":
rsakey = RSA.import_key(key_bytes)
return cls(rsakey)
def get_type(self) -> KeyType:
return KeyType.RSA
def verify(self, data: bytes, signature: bytes) -> bool:
raise NotImplementedError
class RSAPrivateKey(PrivateKey):
def __init__(self, impl: RsaKey) -> None:
self.impl = impl
@classmethod
def new(cls, bits: int = 2048, e: int = 65537) -> "RSAPrivateKey":
private_key_impl = RSA.generate(bits, e=e)
return cls(private_key_impl)
def to_bytes(self) -> bytes:
return self.impl.export_key("DER")
@classmethod
def from_bytes(cls, key_bytes: bytes) -> "RSAPrivateKey":
rsakey = RSA.import_key(key_bytes)
return cls(rsakey)
def get_type(self) -> KeyType:
return KeyType.RSA
def sign(self, data: bytes) -> bytes:
raise NotImplementedError
def get_public_key(self) -> PublicKey:
return RSAPublicKey(self.impl.publickey())
def create_new_key_pair(bits: int = 2048, e: int = 65537) -> KeyPair:
"""
Returns a new RSA keypair with the requested key size (``bits``) and the given public
exponent ``e``. Sane defaults are provided for both values.
"""
private_key = RSAPrivateKey.new(bits, e)
public_key = private_key.get_public_key()
return KeyPair(private_key, public_key)