webqq ptwebqq hash implemented in Python & Javascript

1.js

u = function(x, K) {
    x += "";
    for (var N = [], T = 0; T < K.length; T++)
        N[T % 4] ^= K.charCodeAt(T);
    var U = ["EC", "OK"], V = [];
    V[0] = x >> 24 & 255 ^ U[0].charCodeAt(0);
    V[1] = x >> 16 & 255 ^ U[0].charCodeAt(1);
    V[2] = x >> 8 & 255 ^ U[1].charCodeAt(0);
    V[3] = x & 255 ^ U[1].charCodeAt(1);
    U = [];
    for (T = 0; T < 8; T++)
        U[T] = T % 2 == 0 ? N[T >> 1] : V[T >> 1];
    N = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"];
    V = "";
    for (T = 0; T < U.length; T++) {
        V += N[U[T] >> 4 & 15];
        V += N[U[T] & 15]
    }
    return V
}

/* source: http://pub.idqqimg.com/smartqq/js/mq.js
 test in your browser, login to w.qq.com, open console
 u(mq.presenter.buddylist.model.getSelfUin(), mq.ptwebqq)
*/

1.py

def hash_func(uin, ptwebqq):
    V = struct.pack('!I', int(uin) & 0xFFFFFFFF  ^ 1162039115)

    N = [0] * 4
    for i, c in enumerate(ptwebqq):
        N[i % 4] ^= ord(c)
    
    return ''.join('%02x%02x' % l for l in zip(N, map(ord, V)))

## alternative python implementation https://github.com/yuhua6379/webqq/blob/master/login_new.py#L43