hashFinder.py

import hashlib
import random
import time

# The target hash to compare against
TARGET_HASH = "ee2b34b775d70cd1e23ff42a7ed39731419a443c4f08b062e96015e6e951588d"

fake_file= 'confession_fake.txt'
forged_file= 'confession_forged.txt'
hashDigits=5


def getEndOfHash(string,length):
    return hashlib.sha256(string.encode()).hexdigest()[0-length:]

def convertArrayToString(lineArray):
    string=""
    for l in lineArray:
        string+=l
        string+= "\n"
    return string

fakeMessage=open(fake_file,"r").read()

forgedMessageArray=fakeMessage.split('\n')[:-1]
NumberOfLines=len(forgedMessageArray)

targetString = TARGET_HASH[-hashDigits:]
print('looking for', targetString)


lastHash=""
attempt=1
start=time.time()

while lastHash!=targetString:
    forgedMessageArray[attempt%NumberOfLines]+= " "
    forgedMessage= convertArrayToString(forgedMessageArray)
    lastHash=getEndOfHash(forgedMessage,hashDigits)
    print(lastHash)
    attempt+=1

totalTime =time.time()-start
print("%d attempts, %f seconds" %(attempt, totalTime))

open(str(hashDigits)+ "-"+ forged_file, 'w',newline='\n').write(forgedMessage)