Compare performance of SHA-256 and BLAKE2 on your CPU. Useful for choosing encryption mode for Borg repositories, for example.

hashbench.py

import hashlib
import time

data = b'a' * (10**6)  # 1 MB of data

# Benchmark SHA-256
start = time.time()
for _ in range(1000):
    hashlib.sha256(data).hexdigest()
print("SHA-256 time:", time.time() - start)

# Benchmark BLAKE2
start = time.time()
for _ in range(1000):
    hashlib.blake2b(data).hexdigest()
print("BLAKE2 time:", time.time() - start)