Custom validation utility for PCrack contest at SAINTCON

validate.py

# -*- coding: utf-8 -*-
# Validating utility for sets of plaintexts ordered as original set of hashes.
# Usage: python validate.py < sub_cracks

# Copyright © 2017 Aleksey Cherepanov <lyosha@openwall.com>
# Redistribution and use in source and binary forms, with or without
# modification, are permitted.

import sys
import hashlib

k = 0
with open('pcrack.master.hashed') as f:
    while True:
        c = sys.stdin.readline()
        if c == '':
            print 'success:', k
            exit(0)
        c = c[ : -1]
        h = hashlib.sha1(c).hexdigest()
        h += '\n'
        while True:
            t = f.readline()
            if t == '':
                print 'failure:',
                print 'c:', repr(c)
                print 'h:', repr(h)
                exit(1)
            if t == h:
                k += 1
                break