http://www.oschina.net/question/204035_228006

登陆js脚本在：http://i.xunlei.com/login/1.0.4.min.js

登陆主要处理为 function o(F,J,y) ,密码是md5 + base64 加密

关键代码：

            case "login":if (J.username && J.password && J.captcha && J.check_n && J.check_e) {var s = J.check_n,z = J.check_e,t = new RSAKey();t.setPublic(b64tohex(s), b64tohex(z));var r = J.captcha.toUpperCase();var B = hex2b64(t.encrypt(md5(J.password) + r));I.p = B;I.u = J.username;I.n = s;I.e = z;I.v = a.LOGIN_VERSION;I.verifycode = J.captcha;I.login_enable = J.autologin ? 1 : 0;I.business_type = a.LOGIN_ID} else {throw new Error("post argument error")}u = "post";path = "/sec2login/";l(u, path, I,function(L) {var M;switch (L) {case - 1 : L = 1;M = "连接超时，请重试";break;case 0:M = "登录成功";break;case 1:case 9:case 10:case 11:L = 2;M = "验证码错误，请重新输入验证码";break;case 2:case 4:L = 3;M = "帐号或密码错误，请重新输入";break;case 3:case 7:case 8:case 16:L = 4;M = "服务器内部错误，请重试";break;case 12:case 13:case 14:case 15:L = 5;M = "登录页面失效";break;case 6:M = "帐号被锁定，请换帐号登录";break;default:L = -1;M = "内部错误，请重试";break}y && y(L, M)},D, false, ",33333,");break;

资料：

http://bbs.csdn.net/topics/390624916

http://www.debugease.com/javascript/3428936.html

开源库：

https://github.com/lqik2004/xunlei-lixian-api-PureObjc