js代码转php代码可行吗？

jsphp

入下这段js加密代码。是对用户输入密码和验证码进行加密的。我在做一个app需要异步登录这个网站，抓取数据。但是密码和验证码是加密的这个怎么实现：
我的思路是：
一、用webview进行，在android端进行加密，再提交。
二、在服务器端重写这个加密方法。比如用php语言写。

第二种方法兼容好，请问用php写这个js行吗？

<code>//j加密s文件function md5js(pass, code, uin) {var I = hexchar2bin(md5(pass));var H = md5(I + uin);var G = md5(H + code.toUpperCase());return G}var hexcase = 1;var b64pad = "";var chrsz = 8;var mode = 32;function md5(A) {return hex_md5(A)}function hex_md5(A) {return binl2hex(core_md5(str2binl(A), A.length * chrsz))}function str_md5(A) {return binl2str(core_md5(str2binl(A), A.length * chrsz))}function hex_hmac_md5(A, B) {return binl2hex(core_hmac_md5(A, B))}function b64_hmac_md5(A, B) {return binl2b64(core_hmac_md5(A, B))}function str_hmac_md5(A, B) {return binl2str(core_hmac_md5(A, B))}function core_md5(K, F) {K[F >> 5] |= 128 >> 9)  16) {    E = core_md5(E, C.length * chrsz)}var A = Array(16),D = Array(16);for (var B = 0; B > 16) + (D >> 16) + (C >> 16);return (B >> (32 - B))}function str2binl(D) {var C = Array();var A = (1 > 5] |= (D.charCodeAt(B / chrsz) & A) > 5] >>> (B % 32)) & A)}return D}function binl2hex(C) {var B = hexcase ? "0123456789ABCDEF": "0123456789abcdef";var D = "";for (var A = 0; A > 2] >> ((A % 4) * 8 + 4)) & 15) + B.charAt((C[A >> 2] >> ((A % 4) * 8)) & 15)}return D}function binl2b64(D) {var C = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";var F = "";for (var B = 0; B > 2] >> 8 * (B % 4)) & 255) > 2] >> 8 * ((B + 1) % 4)) & 255) > 2] >> 8 * ((B + 2) % 4)) & 255);    for (var A = 0; A  D.length * 32) {            F += b64pad        } else {            F += C.charAt((E >> 6 * (3 - A)) & 63)        }    }}return F}function hexchar2bin(str) {var arr = [];for (var i = 0; i  </code>