# 解密国服 Auth Lite 的包
# 仅测试过 PowerOn 请求，其他包不确定是否适用
# 仅适用国服 DX2024，其他未测试

# 完全 Standalone，不依赖于其他文件

import base64
from Crypto.Cipher import AES
from urllib.parse import unquote
from Crypto.Util.Padding import unpad

# 密钥从 HDD 提取
LITE_AUTH_KEY = bytes([47, 63, 106, 111, 43, 34, 76, 38, 92, 67, 114, 57, 40, 61, 107, 71])
LITE_AUTH_IV = bytes.fromhex('00000000000000000000000000000000')

# 填入你抓包得到的想解密的数据的 base64 编码
base64String = "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"

def auth_lite_decrypt(ciphertext: bytes) -> str:
    # 解密并去除填充
    cipher = AES.new(LITE_AUTH_KEY, AES.MODE_CBC, LITE_AUTH_IV)
    decrypted_data = unpad(cipher.decrypt(ciphertext), AES.block_size)
    # 提取内容并解码
    content = decrypted_data[16:]  # 去除头部的16字节
    return content.decode('utf-8').strip()

# 解码 base64
decodedData = base64.b64decode(base64String)
# 解密数据
decryptedData = auth_lite_decrypt(decodedData)
print(decryptedData)
# 解码 URL 编码
print(unquote(decryptedData))