def _pool_worker(nonce, initialHash, target, pool_size):
import hashlib
from struct import unpack, pack
trialValue = 99999999999999999999
while trialValue > target:
nonce += pool_size
trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
return [trialValue, nonce]
def run(target, initialHash):
from multiprocessing import Pool, cpu_count
import time
try:
pool_size = cpu_count()
except:
pool_size = 4
pool = Pool(processes=pool_size)
result = []
for i in range(pool_size):
result.append(pool.apply_async(_pool_worker, args = (i, initialHash, target, pool_size)))
while True:
if result[i].ready():
result = result[i].get()
pool.terminate()
return result[0], result[1]
time.sleep(1)
