bitcoin/bips
1
0
Fork 0
mirror of https://github.com/bitcoin/bips.git synced 2025-05-12 12:03:29 +00:00
Code Issues Releases Wiki Activity

Merge pull request #1779 from VolodymyrBg/AE5959595959

Browse Source 
BIP374: add subtraction operator for GE class
This commit is contained in:
Jon Atack 2025-04-16 08:08:34 -06:00 committed by GitHub
commit 05d546d581
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
2 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
bip-0374/reference.py
View File

@ -87,11 +87,10 @@ def dleq_verify_proof(
s = int.from_bytes(proof[32:], "big")
if s >= GE.ORDER:
return False
# TODO: implement subtraction operator (__sub__) for GE class to simplify these terms
R1 = s * G + (-e * A)
R1 = s * G - e * A
if R1.infinity:
return False
R2 = s * B + (-e * C)
R2 = s * B - e * C
if R2.infinity:
return False
if e != dleq_challenge(A, B, C, R1, R2, m, G):

4
bip-0374/secp256k1.py
View File

@ -240,6 +240,10 @@ class GE:
return self
return GE(self.x, -self.y)
def __sub__(self, a):
"""Subtract a group element from another."""
return self + (-a)
def to_bytes_compressed(self):
"""Convert a non-infinite group element to 33-byte compressed encoding."""
assert not self.infinity