mirrors/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2025-02-22 23:07:59 +01:00
Code Issues Projects Releases Wiki Activity

[test/crypto] Add ECDH

Browse source 
Co-authored-by: Pieter Wuille <pieter.wuille@gmail.com>
This commit is contained in:
stratospher 2022-10-06 22:11:46 +05:30
parent 4487b80517
commit 595ad4b168
1 changed files with 20 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
test/functional/test_framework/v2_p2p.py Normal file
View file

@ -0,0 +1,20 @@
#!/usr/bin/env python3
# Copyright (c) 2022 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Class for v2 P2P protocol (see BIP 324)"""
from .crypto.ellswift import ellswift_ecdh_xonly
from .key import TaggedHash
class EncryptedP2PState:
@staticmethod
def v2_ecdh(priv, ellswift_theirs, ellswift_ours, initiating):
"""Compute BIP324 shared secret."""
ecdh_point_x32 = ellswift_ecdh_xonly(ellswift_theirs, priv)
if initiating:
# Initiating, place our public key encoding first.
return TaggedHash("bip324_ellswift_xonly_ecdh", ellswift_ours + ellswift_theirs + ecdh_point_x32)
else:
# Responding, place their public key encoding first.
return TaggedHash("bip324_ellswift_xonly_ecdh", ellswift_theirs + ellswift_ours + ecdh_point_x32)