import stringimport randomimport shaBASE16 = '0123456789ABCDEF'BASE30 = '123456789ABCDEFGHJKLMNPQRTVWXY'def randomstring(size=20, chars=string.ascii_uppercase + string.digits): return ''.join((random.choice(chars) for _ in range(size)))def BaseConvert(number, fromdigits, todigits, ignore_negative=True): if not ignore_negative and str(number)[0] == '-': number = str(number)[1:] neg = 1 else: neg = 0 x = long(0) for digit in str(number): x = x * len(fromdigits) + fromdigits.index(digit) res = '' while x > 0: digit = x % len(todigits) res = todigits[digit] + res x /= len(todigits) if neg: res = '-' + res return resdef AddHyphens(code): return code[:5] + '-' + code[5:10] + '-' + code[10:15] + '-' + code[15:]def SHAToBase30(digest): tdigest = ''.join([c for i, c in enumerate(digest) if i / 2 * 2 == i]) result = BaseConvert(tdigest, BASE16, BASE30) while len(result) < 17: result = '1' + result return resultdef loop(ecx, lichash): part = 0 for c in lichash: part = ecx * part + ord(c) & 1048575 return partrng = AddHyphens('CN' + randomstring(18, '123456789ABCDEFGHJKLMNPQRTVWXY'))print 'License id: ' + rngact30 = raw_input('Enter request code:')lichash = act30hasher = sha.new()hasher.update(act30)hasher.update(rng)lichash = AddHyphens(lichash[:3] + SHAToBase30(hasher.hexdigest().upper()))part5 = format(loop(23, lichash), '05x') + format(loop(161, lichash), '05x') + format(loop(47, lichash), '05x') + format(loop(9, lichash), '05x')part5 = BaseConvert(part5.upper(), BASE16, BASE30)while len(part5) < 17: part5 = '1' + part5part5 = 'AXX' + part5print 'Activation code: ' + AddHyphens(part5)
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