B站 w_rid 和 wts 逆向 python 代码

import hashlib
import json
import time
import urllib


M = "d569546b86c252:db:9bc7e99c5d71e5"
N = "557251g796:g54:f:ee94g8fg969e2de"


def P(t):
    result = ""
    for char in t:
        # 对每个字符进行解码，然后减1，再进行编码
        new_char = chr(ord(char) - 1)
        result += new_char
    return result


def web_rid(t):
    n = P(M) + P(N)
    r = []
    indices = [
        46,
        47,
        18,
        2,
        53,
        8,
        23,
        32,
        15,
        50,
        10,
        31,
        58,
        3,
        45,
        35,
        27,
        43,
        5,
        49,
        33,
        9,
        42,
        19,
        29,
        28,
        14,
        39,
        12,
        38,
        41,
        13,
        37,
        48,
        7,
        16,
        24,
        55,
        40,
        61,
        26,
        17,
        0,
        1,
        60,
        51,
        30,
        4,
        22,
        25,
        54,
        21,
        56,
        59,
        6,
        63,
        57,
        62,
        11,
        36,
        20,
        34,
        44,
        52,
    ]
    for index in indices:
        if index < len(n):
            char = n[index]
            r.append(char)

    mixin_key = "".join(r)

    # 获取当前时间戳
    u = int(time.time())
    # 构建查询字符串
    s = json.dumps(t, sort_keys=True)
    f = urllib.parse.quote(s)

    # 拼接并加密w_rid
    y = f + mixin_key
    w_rid = hashlib.md5(y.encode("utf-8")).hexdigest()

    return {"w_rid": w_rid, "wts": str(u)}


print(web_rid({"mid": 1, "web_location": 2}))