2019-07-28 22:30:51 +08:00
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import hashlib
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2019-08-01 06:00:12 +08:00
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from typing import Union
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2019-07-27 16:27:01 +08:00
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2018-11-19 00:22:56 +08:00
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import base58
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2018-11-29 23:06:40 +08:00
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import multihash
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2019-08-14 09:19:01 +08:00
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from libp2p.crypto.keys import PublicKey
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2018-11-19 00:22:56 +08:00
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class ID:
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2019-07-31 19:26:13 +08:00
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_bytes: bytes
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2019-07-31 21:35:50 +08:00
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_xor_id: int = None
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2019-08-01 21:48:30 +08:00
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_b58_str: str = None
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2019-07-27 16:27:01 +08:00
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2019-07-31 19:26:13 +08:00
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def __init__(self, peer_id_bytes: bytes) -> None:
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self._bytes = peer_id_bytes
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2018-11-19 00:22:56 +08:00
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2019-07-31 19:26:13 +08:00
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@property
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def xor_id(self) -> int:
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if not self._xor_id:
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self._xor_id = int(digest(self._bytes).hex(), 16)
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return self._xor_id
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2019-07-24 22:33:32 +08:00
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2019-07-31 19:26:13 +08:00
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def to_bytes(self) -> bytes:
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return self._bytes
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2019-04-21 05:35:05 +08:00
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2019-08-01 21:48:30 +08:00
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def to_base58(self) -> str:
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if not self._b58_str:
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self._b58_str = base58.b58encode(self._bytes).decode()
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return self._b58_str
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2019-04-25 10:11:54 +08:00
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2019-08-14 09:18:29 +08:00
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def __repr__(self) -> str:
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return "<libp2p.peer.id.ID 0x" + self._bytes.hex() + ">"
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2018-11-19 00:22:56 +08:00
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2019-08-14 09:18:29 +08:00
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__str__ = pretty = to_string = to_base58
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2018-11-29 23:06:40 +08:00
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2019-07-27 16:27:01 +08:00
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def __eq__(self, other: object) -> bool:
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2019-08-01 21:48:30 +08:00
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if isinstance(other, str):
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return self.to_base58() == other
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elif isinstance(other, bytes):
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2019-07-31 19:26:13 +08:00
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return self._bytes == other
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elif isinstance(other, ID):
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return self._bytes == other._bytes
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else:
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2019-07-27 16:27:01 +08:00
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return NotImplemented
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2018-11-29 23:06:40 +08:00
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2019-07-27 16:27:01 +08:00
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def __hash__(self) -> int:
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2019-07-31 19:26:13 +08:00
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return hash(self._bytes)
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2018-11-29 23:06:40 +08:00
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2019-07-31 19:31:58 +08:00
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@classmethod
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2019-08-01 13:25:20 +08:00
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def from_base58(cls, b58_encoded_peer_id_str: str) -> "ID":
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2019-07-31 19:31:58 +08:00
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peer_id_bytes = base58.b58decode(b58_encoded_peer_id_str)
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pid = ID(peer_id_bytes)
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return pid
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@classmethod
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2019-08-14 09:19:01 +08:00
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def from_pubkey(cls, key: PublicKey) -> "ID":
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2019-08-21 01:01:36 +08:00
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serialized_key = key.serialize()
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2019-08-03 07:03:40 +08:00
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algo = multihash.Func.sha2_256
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2019-08-14 09:19:01 +08:00
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mh_digest = multihash.digest(serialized_key, algo)
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2019-07-31 19:31:58 +08:00
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return cls(mh_digest.encode())
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2018-11-29 23:06:40 +08:00
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2019-07-27 16:27:01 +08:00
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def digest(data: Union[str, bytes]) -> bytes:
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2019-07-30 23:41:28 +08:00
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if isinstance(data, str):
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2019-08-01 06:00:12 +08:00
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data = data.encode("utf8")
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2019-07-29 12:42:13 +08:00
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return hashlib.sha1(data).digest()
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