JS逆向 -- 分析某站buvid3和_uuid的加密过程

import requests
def 获取buvid3():
    视频地址='https://www.bilibili.com/video/BV1vo4y1A7ED/'
    头信息={
        'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36'
    }
    响应=requests.get(url=视频地址,headers=头信息)
    buvid3=响应.cookies.get_dict()
    print(buvid3['buvid3'])
获取buvid3()

function getuuid(){
        var e = a(8)
          , t = a(4)
          , r = a(4)
          , n = a(4)
          , o = a(12)
          , i = (new Date).getTime();
        return e + "-" + t + "-" + r + "-" + n + "-" + o + s((i % 1e5).toString(), 5) + "infoc"
    }
function a(e) {
        for (var t = "", r = 0; r < e; r++)
            t += o(16 * Math.random());
        return s(t, e)
    }
function s(e, t) {
        var r = "";
        if (e.length < t)
            for (var n = 0; n < t - e.length; n++)
                r += "0";
        return r + e
        }
function o(e) {
        return Math.ceil(e).toString(16).toUpperCase()
    }