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ecc: add bindings for schnorr sign/verify

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and require "schnorrsig" and "extrakeys" modules of libsecp256k1
This commit is contained in:
SomberNight
2024-04-11 13:09:57 +00:00
parent 5f95d919df
commit 44e27ac8b5
5 changed files with 166 additions and 1 deletions
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32
electrum/ecc_fast.py
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@@ -1,4 +1,9 @@
# taken (with minor modifications) from pycoin
# Copyright (c) 2013-2018 Richard Kiss
# Copyright (c) 2018-2024 The Electrum developers
# Distributed under the MIT software license, see the accompanying
# file LICENCE or http://www.opensource.org/licenses/mit-license.php
#
# Originally based on pycoin:
# https://github.com/richardkiss/pycoin/blob/01b1787ed902df23f99a55deb00d8cd076a906fe/pycoin/ecdsa/native/secp256k1.py
import os
@@ -127,6 +132,31 @@ def load_library():
raise LibModuleMissing('libsecp256k1 library found but it was built '
'without required module (--enable-module-recovery)')
# --enable-module-schnorrsig
try:
secp256k1.secp256k1_schnorrsig_sign32.argtypes = [c_void_p, c_char_p, c_char_p, c_char_p, c_char_p]
secp256k1.secp256k1_schnorrsig_sign32.restype = c_int
secp256k1.secp256k1_schnorrsig_verify.argtypes = [c_void_p, c_char_p, c_char_p, c_size_t, c_char_p]
secp256k1.secp256k1_schnorrsig_verify.restype = c_int
except (OSError, AttributeError):
raise LibModuleMissing('libsecp256k1 library found but it was built '
'without required module (--enable-module-schnorrsig)')
# --enable-module-extrakeys
try:
secp256k1.secp256k1_xonly_pubkey_parse.argtypes = [c_void_p, c_char_p, c_char_p]
secp256k1.secp256k1_xonly_pubkey_parse.restype = c_int
secp256k1.secp256k1_xonly_pubkey_serialize.argtypes = [c_void_p, c_char_p, c_char_p]
secp256k1.secp256k1_xonly_pubkey_serialize.restype = c_int
secp256k1.secp256k1_keypair_create.argtypes = [c_void_p, c_char_p, c_char_p]
secp256k1.secp256k1_keypair_create.restype = c_int
except (OSError, AttributeError):
raise LibModuleMissing('libsecp256k1 library found but it was built '
'without required module (--enable-module-extrakeys)')
secp256k1.ctx = secp256k1.secp256k1_context_create(SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY)
ret = secp256k1.secp256k1_context_randomize(secp256k1.ctx, os.urandom(32))
if not ret: