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Tithen-Firion/1_WeTV_cKey_function.md

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WeTV - cKey function
Raw
1_WeTV_cKey_function.md

Here's the code (in JavaScript and Python) to make the cKey for downloading stuff from WeTV. This works for encryption version 8.1. Both versions accept the same arguments, first 5 (vid, tm, appVer, guid and platform) are the same as in the call to https://play.wetv.vip/getvinfo. url is optional for JavaScript but required for Python - that's the URL of the page you're on. userAgent, referer, navCodeName, navName and navPlatform are optional, check the code for default values.

Usage

JavaScript

makeCKey(/* arguments here */);

Python

ckey = CKey()
ckey.make(
  # arguments here
)

If you use this code in your project - let me know and credit me. ;)

Raw
2_ckey.js
var makeCKey = function() {
function encodeText(text) {
const len = text.length, arr = [];
for(let i=0; i<len; i++) arr[i >>> 2] |= (255 & text.charCodeAt(i)) << 24 - i % 4 * 8;
return [arr, len];
}
function decodeText(arr, len) {
const textArray = [];
for (let i=0; i<len; i++) {
textArray.push((arr[i >>> 2] >>> 24 - i % 4 * 8 & 255).toString(16).padStart(2, '0'))
}
return textArray.join('')
}
function shorten(text) {
return (text || '').substr(0, 48);
}
function calculateHash(text) {
let result = 0;
const len = text.length;
for(let i=0; i<len; i++) result = (result << 5) - result + text.charCodeAt(i);
return result;
}
function padText(text) {
const padLength = 16 - text.length % 16;
for(let i = 0; i < padLength; ++i) text += String.fromCharCode(padLength);
return text;
}
function encrypt(arr) {
const len = arr.length;
for(let i=0; i<len; i+= 4) mainAlgorithm(arr, i);
}
// init start
const encryptionArrays = [[1332468387, -1641050960, 2136896045, -1629555948, 1399201960, -850809832, -1307058635, 751381793, -1933648423, 1106735553, -203378700, -550927659, 766369351, 1817882502, -1615200142, 1083409063, -104955314, -1780208184, 173944250, 1254993693, 1422337688, -1054667952, -880990486, -2119136777, -1822404972, 1380140484, -1723964626, 412019417, -890799303, -1734066435, 26893779, 420787978, -1337058067, 686432784, 695238595, 811911369, -391724567, -1068702727, -381903814, -648522509, -1266234148, 1959407397, -1644776673, 1152313324]];
(function() {
var d = [], f = [], g = [], h = [], j = [], o = [];
for(let i=0; i<256; i++) o[i] = i < 128 ? i << 1 : i << 1 ^ 283;
var t = 0,
u = 0;
for(let i=0; i<256; i++) {
var v = u ^ u << 1 ^ u << 2 ^ u << 3 ^ u << 4;
v = v >>> 8 ^ 255 & v ^ 99;
d[t] = v;
var x = o[t],
z = o[o[x]],
A = 257 * o[v] ^ 16843008 * v;
f[t] = A << 24 | A >>> 8
g[t] = A << 16 | A >>> 16
h[t] = A << 8 | A >>> 24
j[t] = A
t ? (t = x ^ o[o[o[z ^ x]]], u ^= o[o[u]]) : t = u = 1
}
encryptionArrays.push(f);
encryptionArrays.push(g);
encryptionArrays.push(h);
encryptionArrays.push(j);
encryptionArrays.push(d);
})();
// init end
function mainAlgorithm(a, b) {
const [c, d, e, f, g, h] = encryptionArrays;
let xorArr;
if(b === 0) {
xorArr = [22039283, 1457920463, 776125350, -1941999367];
}
else {
xorArr = a.slice(b - 4, b);
}
for (let i = 0; i < 4; i++) a[b + i] ^= xorArr[i];
for (var i = 10, j = a[b] ^ c[0], k = a[b + 1] ^ c[1], l = a[b + 2] ^ c[2], m = a[b + 3] ^ c[3], n = 4, o = 1; o < i; o++) {
var q = d[j >>> 24] ^ e[k >>> 16 & 255] ^ f[l >>> 8 & 255] ^ g[255 & m] ^ c[n++],
s = d[k >>> 24] ^ e[l >>> 16 & 255] ^ f[m >>> 8 & 255] ^ g[255 & j] ^ c[n++],
t = d[l >>> 24] ^ e[m >>> 16 & 255] ^ f[j >>> 8 & 255] ^ g[255 & k] ^ c[n++];
m = d[m >>> 24] ^ e[j >>> 16 & 255] ^ f[k >>> 8 & 255] ^ g[255 & l] ^ c[n++];
j = q;
k = s;
l = t;
}
q = (h[j >>> 24] << 24 | h[k >>> 16 & 255] << 16 | h[l >>> 8 & 255] << 8 | h[255 & m]) ^ c[n++];
s = (h[k >>> 24] << 24 | h[l >>> 16 & 255] << 16 | h[m >>> 8 & 255] << 8 | h[255 & j]) ^ c[n++];
t = (h[l >>> 24] << 24 | h[m >>> 16 & 255] << 16 | h[j >>> 8 & 255] << 8 | h[255 & k]) ^ c[n++];
m = (h[m >>> 24] << 24 | h[j >>> 16 & 255] << 16 | h[k >>> 8 & 255] << 8 | h[255 & l]) ^ c[n++];
a[b] = q;
a[b + 1] = s;
a[b + 2] = t;
a[b + 3] = m;
}
return function(vid, tm, appVer, guid, platform, url, userAgent, referer, navCodeName, navName, navPlatform) {
if(typeof url === 'undefined') url = window.document.URL;
if(typeof userAgent === 'undefined') userAgent = window.navigator.userAgent;
if(typeof referer === 'undefined') referer = window.document.referrer;
if(typeof navCodeName === 'undefined') navCodeName = window.navigator.appCodeName;
if(typeof navName === 'undefined') navName = window.navigator.appName;
if(typeof navPlatform === 'undefined') navPlatform = window.navigator.platform;
const textParts = [
'', vid, tm, 'mg3c3b04ba', appVer, guid, platform, shorten(url),
shorten(userAgent.toLowerCase()), shorten(referer),
navCodeName, navName, navPlatform, '00', ''
];
textParts.splice(1, 0, calculateHash(textParts.join('|')));
const text = padText(textParts.join('|'));
const [arr, len] = encodeText(text);
encrypt(arr);
return decodeText(arr, len).toUpperCase();
}
}();
Raw
3_ckey.py
from ctypes import c_int32
class CKey:
def __init__(self):
self.encryption_arrays = [[
1332468387, -1641050960, 2136896045, -1629555948,
1399201960, -850809832, -1307058635, 751381793,
-1933648423, 1106735553, -203378700, -550927659,
766369351, 1817882502, -1615200142, 1083409063,
-104955314, -1780208184, 173944250, 1254993693,
1422337688, -1054667952, -880990486, -2119136777,
-1822404972, 1380140484, -1723964626, 412019417,
-890799303, -1734066435, 26893779, 420787978,
-1337058067, 686432784, 695238595, 811911369,
-391724567, -1068702727, -381903814, -648522509,
-1266234148, 1959407397, -1644776673, 1152313324]]
d = [None] * 256
f = d.copy()
g = d.copy()
h = d.copy()
j = d.copy()
o = d.copy()
for i in range(256):
o[i] = i << 1 if i < 128 else i << 1 ^ 283
t = 0
u = 0
for i in range(256):
v = u ^ u << 1 ^ u << 2 ^ u << 3 ^ u << 4
v = CKey.rshift(v, 8) ^ 255 & v ^ 99
d[t] = v
x = o[t]
z = o[o[x]]
A = CKey.int32(257 * o[v] ^ 16843008 * v)
f[t] = CKey.int32(A << 24 | CKey.rshift(A, 8))
g[t] = CKey.int32(A << 16 | CKey.rshift(A, 16))
h[t] = CKey.int32(A << 8 | CKey.rshift(A, 24))
j[t] = A
if t == 0:
t = 1
u = 1
else:
t = x ^ o[o[o[z ^ x]]]
u ^= o[o[u]]
self.encryption_arrays.append(f)
self.encryption_arrays.append(g)
self.encryption_arrays.append(h)
self.encryption_arrays.append(j)
self.encryption_arrays.append(d)
@staticmethod
def rshift(val, n):
return (val & 0xFFFFFFFF) >> n
@staticmethod
def int32(val):
return c_int32(val).value
@staticmethod
def encode_text(text):
length = len(text)
arr = [0] * (length // 4)
for i in range(length):
arr[i // 4] |= (255 & ord(text[i])) << 24 - i % 4 * 8
return arr, length
@staticmethod
def decode_text(arr, length):
text_array = []
for i in range(length):
text_array.append('{:02x}'.format(
CKey.rshift(arr[i // 4], 24 - i % 4 * 8) & 255))
return ''.join(text_array)
@staticmethod
def calculate_hash(text):
result = 0
for char in text:
result = CKey.int32(result << 5) - result + ord(char)
return str(result)
@staticmethod
def pad_text(text):
pad_length = 16 - len(text) % 16
return text + chr(pad_length) * pad_length
def encrypt(self, arr):
for i in range(0, len(arr), 4):
self.main_algorithm(arr, i)
def main_algorithm(self, a, b):
c, d, e, f, g, h = self.encryption_arrays
if b == 0:
xor_arr = [22039283, 1457920463, 776125350, -1941999367]
else:
xor_arr = a[b - 4: b]
for i, val in enumerate(xor_arr):
a[b + i] ^= val
j = a[b] ^ c[0]
k = a[b + 1] ^ c[1]
l = a[b + 2] ^ c[2]
m = a[b + 3] ^ c[3]
n = 4
for _ in range(9):
q = (d[CKey.rshift(j, 24)] ^ e[CKey.rshift(k, 16) & 255]
^ f[CKey.rshift(l, 8) & 255] ^ g[255 & m] ^ c[n])
s = (d[CKey.rshift(k, 24)] ^ e[CKey.rshift(l, 16) & 255]
^ f[CKey.rshift(m, 8) & 255] ^ g[255 & j] ^ c[n + 1])
t = (d[CKey.rshift(l, 24)] ^ e[CKey.rshift(m, 16) & 255]
^ f[CKey.rshift(j, 8) & 255] ^ g[255 & k] ^ c[n + 2])
m = (d[CKey.rshift(m, 24)] ^ e[CKey.rshift(j, 16) & 255]
^ f[CKey.rshift(k, 8) & 255] ^ g[255 & l] ^ c[n + 3])
j = q
k = s
l = t
n += 4
q = CKey.int32(h[CKey.rshift(j, 24)] << 24
| h[CKey.rshift(k, 16) & 255] << 16
| h[CKey.rshift(l, 8) & 255] << 8
| h[255 & m]) ^ c[n]
s = CKey.int32(h[CKey.rshift(k, 24)] << 24
| h[CKey.rshift(l, 16) & 255] << 16
| h[CKey.rshift(m, 8) & 255] << 8
| h[255 & j]) ^ c[n + 1]
t = CKey.int32(h[CKey.rshift(l, 24)] << 24
| h[CKey.rshift(m, 16) & 255] << 16
| h[CKey.rshift(j, 8) & 255] << 8
| h[255 & k]) ^ c[n + 2]
m = CKey.int32(h[CKey.rshift(m, 24)] << 24
| h[CKey.rshift(j, 16) & 255] << 16
| h[CKey.rshift(k, 8) & 255] << 8
| h[255 & l]) ^ c[n + 3]
a[b] = q
a[b + 1] = s
a[b + 2] = t
a[b + 3] = m
def make(self, vid, tm, app_ver, guid, platform, url,
# user_agent is shortened anyway
user_agent='Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.',
referer='', nav_code_name='Mozilla',
nav_name='Netscape', nav_platform='Win32'):
text_parts = [
'', vid, tm, 'mg3c3b04ba', app_ver, guid, platform,
url[:48], user_agent[:48].lower(), referer[:48],
nav_code_name, nav_name, nav_platform, '00', ''
]
text_parts.insert(1, CKey.calculate_hash('|'.join(text_parts)))
text = CKey.pad_text('|'.join(text_parts))
[arr, length] = CKey.encode_text(text)
self.encrypt(arr)
return CKey.decode_text(arr, length).upper()
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