import threading
import hashlib
import random
import string
import time

diff = 5
thread_num = 4
calcs = 10**(diff+1) #Stupid rule, please dont use.
threads=[]
h=""

def generate_string(diff):
    return str(time.time()) + ''.join([random.choice(list(string.ascii_lowercase)) for i in range(2**(10-diff))])

def generate_chal(diff):
    return ''.join([random.choice(list(string.hexdigits)) for i in range(diff)])

def pow(diff, string, chal, r, tn):
    n = r[0]
    #print("Running in range {0} to {1}".format(r[0],r[1]))
    #comp = False
    while n <= r[1]:
        h_s = string + str(n)
        h = hashlib.sha256(h_s.encode('utf-8')).hexdigest()
        if str(h)[:diff].upper() == chal.upper():
            print [h, h_s, n, tn]
            return None, None, None
            #comp=True
        else:
            n += 1
    #print("Didnt find any in range {0} to {1}".format(r[0],r[1]))
    return None, None, None

for i in range(200):
    chal =  generate_chal(diff) if not h else h[-diff::]
    s = generate_string(diff)
    for tn in range(thread_num):
        t = threading.Thread(target=pow, args=(diff, s, chal, [calcs/thread_num*tn,calcs/thread_num*(tn+1)], tn))
        threads.append(t)
        t.start()
        #print("Proof {0} for {1} with chal {2} generated hash {3} with range {4}".format(n, s, chal, h, r))