encrypt_funcs.py

import hashlib


def encrypt(text, line_num):
    """

    :param text: the damage text row without last | and encryption code
    :param line_num: line number of record
    :return: encryption code
    """
    test_str = (text + '|' + line_num).encode('utf-8')
    m = hashlib.sha256()
    m.update(test_str)
    hex_bytes = m.digest()
    t = u_49152(hex_bytes)
    return t


def u_49152(byte_str):
    # lookup = u_49151()
    lookup = [3145776, 3211312, 3276848, 3342384, 3407920, 3473456, 3538992, 3604528, 3670064, 3735600, 6357040, 6422576, 6488112, 6553648, 6619184, 6684720, 3145777, 3211313, 3276849, 3342385, 3407921, 3473457, 3538993, 3604529, 3670065, 3735601, 6357041, 6422577, 6488113, 6553649, 6619185, 6684721, 3145778, 3211314, 3276850, 3342386, 3407922, 3473458, 3538994, 3604530, 3670066, 3735602, 6357042, 6422578, 6488114, 6553650, 6619186, 6684722, 3145779, 3211315, 3276851, 3342387, 3407923, 3473459, 3538995, 3604531, 3670067, 3735603, 6357043, 6422579, 6488115, 6553651, 6619187, 6684723, 3145780, 3211316, 3276852, 3342388, 3407924, 3473460, 3538996, 3604532, 3670068, 3735604, 6357044, 6422580, 6488116, 6553652, 6619188, 6684724, 3145781, 3211317, 3276853, 3342389, 3407925, 3473461, 3538997, 3604533, 3670069, 3735605, 6357045, 6422581, 6488117, 6553653, 6619189, 6684725, 3145782, 3211318, 3276854, 3342390, 3407926, 3473462, 3538998, 3604534, 3670070, 3735606, 6357046, 6422582, 6488118, 6553654, 6619190, 6684726, 3145783, 3211319, 3276855, 3342391, 3407927, 3473463, 3538999, 3604535, 3670071, 3735607, 6357047, 6422583, 6488119, 6553655, 6619191, 6684727, 3145784, 3211320, 3276856, 3342392, 3407928, 3473464, 3539000, 3604536, 3670072, 3735608, 6357048, 6422584, 6488120, 6553656, 6619192, 6684728, 3145785, 3211321, 3276857, 3342393, 3407929, 3473465, 3539001, 3604537, 3670073, 3735609, 6357049, 6422585, 6488121, 6553657, 6619193, 6684729, 3145825, 3211361, 3276897, 3342433, 3407969, 3473505, 3539041, 3604577, 3670113, 3735649, 6357089, 6422625, 6488161, 6553697, 6619233, 6684769, 3145826, 3211362, 3276898, 3342434, 3407970, 3473506, 3539042, 3604578, 3670114, 3735650, 6357090, 6422626, 6488162, 6553698, 6619234, 6684770, 3145827, 3211363, 3276899, 3342435, 3407971, 3473507, 3539043, 3604579, 3670115, 3735651, 6357091, 6422627, 6488163, 6553699, 6619235, 6684771, 3145828, 3211364, 3276900, 3342436, 3407972, 3473508, 3539044, 3604580, 3670116, 3735652, 6357092, 6422628, 6488164, 6553700, 6619236, 6684772, 3145829, 3211365, 3276901, 3342437, 3407973, 3473509, 3539045, 3604581, 3670117, 3735653, 6357093, 6422629, 6488165, 6553701, 6619237, 6684773, 3145830, 3211366, 3276902, 3342438, 3407974, 3473510, 3539046, 3604582, 3670118, 3735654, 6357094, 6422630, 6488166, 6553702, 6619238, 6684774]
    res = []
    for _ in range(16):
        res.append(None)
    for i in range(8):
        num = lookup[byte_str[i]]
        res[2*i] = chr(num % 128)
        res[2*i + 1] = chr((num >> 16) % 128)
    return "".join(res)


def u_49151():
    num_array = []
    for i in range(256):
        string = '{:02x}'.format(i)
        num_array.append(ord(string[0]) + (ord(string[1]) << 16))
    return num_array