H3C cliper password decrypt

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Date: 2015/7/03
# Created by 独自等待
# 博客 http://www.waitalone.cn/
import sys, os
from Crypto.Cipher import DES


def decode_char(c):
    if c == 'a':
        r = '?'
    else:
        r = c
    return ord(r) - ord('!')


def ascii_to_binary(s):
    assert len(s) == 24

    out = [0] * 18
    i = 0
    j = 0

    for i in range(0, len(s), 4):
        y = decode_char(s[i + 0])
        y = (y << 6) & 0xffffff

        k = decode_char(s[i + 1])
        y = (y | k) & 0xffffff
        y = (y << 6) & 0xffffff

        k = decode_char(s[i + 2])
        y = (y | k) & 0xffffff
        y = (y << 6) & 0xffffff

        k = decode_char(s[i + 3])
        y = (y | k) & 0xffffff

        out[j + 2] = chr(y & 0xff)
        out[j + 1] = chr((y >> 8) & 0xff)
        out[j + 0] = chr((y >> 16) & 0xff)

        j += 3

    return "".join(out)


def decrypt_password(p):
    """
    huawei/h3c交换机密码破解函数
    p:传入的加密密文
    return: 返回明文密码
    """
    r = ascii_to_binary(p)

    r = r[:16]

    d = DES.new("\x01\x02\x03\x04\x05\x06\x07\x08", DES.MODE_ECB)
    r = d.decrypt(r)

    return r.rstrip("\x00")


if __name__ == '__main__':
    print '+' + '-' * 50 + '+'
    print u'\t    huawei/h3c交换机密码破解工具'
    print u'\t   Blog：http://www.waitalone.cn/'
    print u'\t\t Code BY： 独自等待'
    print u'\t\t Time：2015-07-03'
    print '+' + '-' * 50 + '+'
    if len(sys.argv) != 2:
        print '用法: ' + os.path.basename(sys.argv[0]) + ' 经过加密的密文'
        print '实例: ' + os.path.basename(sys.argv[0]) + ' "aK9Q4I)J\'#[Q=^Q`MAF4<1!!"'
        sys.exit()
    print '解密结果：' + decrypt_password(sys.argv[1])

Traceback (most recent call last):
File "huawei.py", line 76, in
print '瑙ｅ瘑缁撴灉锛? + decrypt_password(sys.argv[1])
File "huawei.py", line 55, in decrypt_password
r = ascii_to_binary(p)
File "huawei.py", line 19, in ascii_to_binary
assert len(s) == 24
AssertionError

How to handle this error?

Make sure the password is 24 characters long. Make sure that all special characters in the password are quoted with \.

$1a$[i9,QN\e<5$;^C{ChNsREuO-HT%G!];Q;=V3(^}TP4Hh}Qn{8w*$ siphertext such as me is longer than 24 characters.

Make sure the password is 24 characters long. Make sure that all special characters in the password are quoted with .

$1a$[i9,QN\e<5$;^C{ChNsREuO-HT%G!];Q;=V3(^}TP4Hh}Qn{8w*$ mine cipherpwd longer than 24 characters,what should I do now.And I can't identify what is special characters in this situation.