2019YISF-quals-web50.py

import hashlib
import re

import string
ALLOWED_CHARACTERS = string.hexdigits
NUMBER_OF_CHARACTERS = len(ALLOWED_CHARACTERS)

def characterToIndex(char):
    return ALLOWED_CHARACTERS.index(char)

def indexToCharacter(index):
    if NUMBER_OF_CHARACTERS <= index:
        raise ValueError("Index out of range.")
    else:
        return ALLOWED_CHARACTERS[index]

def next(string):
    if len(string) <= 0:
        string.append(indexToCharacter(0))
    else:
        string[0] = indexToCharacter((characterToIndex(string[0]) + 1) % NUMBER_OF_CHARACTERS)
        if characterToIndex(string[0]) is 0:
            return list(string[0]) + next(string[1:])
    return string

def main():
    sequence = list()
    while True:
        sequence = next(sequence)
        tmp = ''.join(i for i in sequence)
        tmp += 'S@L7'
        m = hashlib.md5()
    	m.update(tmp)
    	md5string=m.hexdigest()
        if md5string[2:].isdigit() == True and md5string[:2] == '0e':
        	print md5string + " : " + tmp

if __name__ == "__main__":
    main()