TudouCode Demo in Python 3. 与佛论禅 Python 3 版 Demo（源码参见 https://github.com/lersh/TudouCode/ ）。

nianfo.py

# !/usr/bin/env python3
#
# nianfo.py - TudouCode Demo in Python 3
# Credit: https://github.com/lersh/TudouCode/
#
# Note:
#  
#     This is the first version('佛曰') of TudouCode('与佛论禅').
#     The second version('如是我闻') needs compression and I can't debug.
# 
# Dependency: pycrypto

from Crypto.Cipher import AES
from random import choice

KEY = b'XDXDtudou@KeyFansClub^_^Encode!!'
IV = b'Potato@Key@_@=_='

TUDOU = [
    '滅', '苦', '婆', '娑', '耶', '陀', '跋', '多', '漫', '都', '殿', '悉', '夜', '爍', '帝', '吉',
    '利', '阿', '無', '南', '那', '怛', '喝', '羯', '勝', '摩', '伽', '謹', '波', '者', '穆', '僧',
    '室', '藝', '尼', '瑟', '地', '彌', '菩', '提', '蘇', '醯', '盧', '呼', '舍', '佛', '參', '沙',
    '伊', '隸', '麼', '遮', '闍', '度', '蒙', '孕', '薩', '夷', '迦', '他', '姪', '豆', '特', '逝',
    '朋', '輸', '楞', '栗', '寫', '數', '曳', '諦', '羅', '曰', '咒', '即', '密', '若', '般', '故',
    '不', '實', '真', '訶', '切', '一', '除', '能', '等', '是', '上', '明', '大', '神', '知', '三',
    '藐', '耨', '得', '依', '諸', '世', '槃', '涅', '竟', '究', '想', '夢', '倒', '顛', '離', '遠',
    '怖', '恐', '有', '礙', '心', '所', '以', '亦', '智', '道', '。', '集', '盡', '死', '老', '至']

BYTEMARK = ['冥', '奢', '梵', '呐', '俱', '哆', '怯', '諳', '罰', '侄', '缽', '皤']

def Encrypt(plaintext):
    # 1. Encode Plaintext in UTF-16 Little Endian
    data = plaintext.encode('utf-16le')
    # 2. Add Paddings (PKCS7)
    pads = (- len(data)) % 16
    data = data + bytes(pads * [pads])
    # 3. Use AES-256-CBC to Encrypt
    cryptor = AES.new(KEY, AES.MODE_CBC, IV)
    result = cryptor.encrypt(data)
    # 4. Encode and Add Header
    return '佛曰：' + ''.join([TUDOU[i] if i < 128 else choice(BYTEMARK) + TUDOU[i-128] for i in result])

def Decrypt(ciphertext):
    # 1. Remove Header and Decode
    if ciphertext.startswith('佛曰：'):
        ciphertext = ciphertext[3:]
        data = b''
        i = 0
        while i < len(ciphertext):
            if ciphertext[i] in BYTEMARK:
                i = i + 1
                data = data + bytes([TUDOU.index(ciphertext[i]) + 128])
            else:
                data = data + bytes([TUDOU.index(ciphertext[i])])
            i = i + 1
        # 2. Use AES-256-CBC to Decrypt
        cryptor = AES.new(KEY, AES.MODE_CBC, IV)
        result = cryptor.decrypt(data)
        # 3. Remove Paddings (PKCS7)
        flag = result[-1]
        if flag < 16 and result[-flag] == flag:
            result = result[:-flag]
        # 4. Decode Plaintext with UTF-16 Little Endian
        return result.decode('utf-16le')
    else:
        return ''

print(Encrypt('test测试测试测试'))
print(Decrypt('佛曰：梵依沙若罰怖諳羅怯大罰波除諳室若若奢伽涅怯究皤苦冥逝冥曳麼梵咒離除奢咒梵夷有怯神倒所滅俱孕盡等呐佛'))