time taken to add points changes to around 35% of what it was with python-ecdsa
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# benchmark runs before:
> python3.7-64 ..\wspace\201909_libsecp256k1_point_addition\bench.py
time taken: 3.7693 seconds
> python3.7-64 ..\wspace\201909_libsecp256k1_point_addition\bench.py
time taken: 3.8123 seconds
> python3.7-64 ..\wspace\201909_libsecp256k1_point_addition\bench.py
time taken: 3.7937 seconds
# benchmark runs after:
> python3.7-64 ..\wspace\201909_libsecp256k1_point_addition\bench.py
time taken: 1.3127 seconds
> python3.7-64 ..\wspace\201909_libsecp256k1_point_addition\bench.py
time taken: 1.3000 seconds
> python3.7-64 ..\wspace\201909_libsecp256k1_point_addition\bench.py
time taken: 1.3128 seconds
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# benchmark script:
import os
import time
from electrum.ecc import generator
from electrum.crypto import sha256
rand_bytes = os.urandom(32)
#rand_bytes = bytes.fromhex('d3d88983b91ee6dfd546ccf89b9a1ffb23b01bf2eef322c2808cb3d951a3c116')
point_pairs = []
for i in range(30000):
rand_bytes = sha256(rand_bytes)
rand_int = int.from_bytes(rand_bytes, "big")
a = generator() * rand_int
rand_bytes = sha256(rand_bytes)
rand_int = int.from_bytes(rand_bytes, "big")
b = generator() * rand_int
point_pairs.append((a,b))
t0 = time.time()
for a, b in point_pairs:
c = a + b
t = time.time() - t0
print(f"time taken: {t:.4f} seconds")
65d896be5a