gistfile1.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

'''
排他的論理和を使った簡単な暗号
101 = 5 を使って変換
'''

import unittest


class TestCoder(unittest.TestCase):

    def setUp(self):
        pass

    def testCoder(self):
        base = 'bow wow'
        coded = 'gjr%rjr'
        self.assertEqual(exor(base), coded)

    def testHoge(self):
        base = 'hoge'
        coded = 'mjb`'
        self.assertEqual(exor(base), coded)

    def testHomu(self):
        base = 'homu'
        coded = 'mjhp'
        self.assertEqual(exor(base), coded)

    def testDecoder(self):
        base = 'co452865'
        coded = 'fj107=30'
        self.assertEqual(base, exor(coded))


def exor(src):
    xornum = 0b101
    result = ''
    for ch in src:
        # ch[str] => ord[int] => xor[int] => chr[str]
        result += chr(ord(ch) ^ xornum)
    return result


def main():
    unittest.main()


if __name__ == '__main__':
    main()