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move blinding_privkey from onion_message to lnonion

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Sander van Grieken
2025-12-01 12:55:09 +01:00
committed by f321x
parent 3e3bffa4a2
commit 9bcbbdd3eb
3 changed files with 14 additions and 15 deletions
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electrum/onion_message.py
+1 -13
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@@ -40,7 +40,7 @@ from electrum.lnrouter import PathEdge
from electrum.logging import get_logger, Logger
from electrum.crypto import sha256, get_ecdh
from electrum.lnmsg import OnionWireSerializer
from electrum.lnonion import (get_bolt04_onion_key, OnionPacket, process_onion_packet,
from electrum.lnonion import (get_bolt04_onion_key, OnionPacket, process_onion_packet, blinding_privkey,
OnionHopsDataSingle, decrypt_onionmsg_data_tlv, encrypt_onionmsg_data_tlv,
get_shared_secrets_along_route, new_onion_packet, encrypt_hops_recipient_data)
from electrum.lnutil import LnFeatures, MIN_FINAL_CLTV_DELTA_ACCEPTED, MAXIMUM_REMOTE_TO_SELF_DELAY_ACCEPTED
@@ -145,18 +145,6 @@ def encode_blinded_path(blinded_path: dict):
return blinded_path_fd.getvalue()
def blinding_privkey(privkey: bytes, blinding: bytes) -> bytes:
shared_secret = get_ecdh(privkey, blinding)
b_hmac = get_bolt04_onion_key(b'blinded_node_id', shared_secret)
b_hmac_int = int.from_bytes(b_hmac, byteorder="big")
our_privkey_int = int.from_bytes(privkey, byteorder="big")
our_privkey_int = our_privkey_int * b_hmac_int % ecc.CURVE_ORDER
our_privkey = our_privkey_int.to_bytes(32, byteorder="big")
return our_privkey
def is_onion_message_node(node_id: bytes, node_info: Optional['NodeInfo']) -> bool:
if not node_info:
return False