# 从教务系统登录上扒下的md5加密代码，感兴趣的拿去研究

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 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 << ((F) % 32);
K[(((F + 64) >>> 9) << 4) + 14] = F;
var J = 1732584193;
var I = -271733879;
var H = -1732584194;
var G = 271733878;
for (var C = 0; C < K.length; C += 16) {
var E = J;
var D = I;
var B = H;
var A = G;
J = md5_ff(J, I, H, G, K[C + 0], 7, -680876936);
G = md5_ff(G, J, I, H, K[C + 1], 12, -389564586);
H = md5_ff(H, G, J, I, K[C + 2], 17, 606105819);
I = md5_ff(I, H, G, J, K[C + 3], 22, -1044525330);
J = md5_ff(J, I, H, G, K[C + 4], 7, -176418897);
G = md5_ff(G, J, I, H, K[C + 5], 12, 1200080426);
H = md5_ff(H, G, J, I, K[C + 6], 17, -1473231341);
I = md5_ff(I, H, G, J, K[C + 7], 22, -45705983);
J = md5_ff(J, I, H, G, K[C + 8], 7, 1770035416);
G = md5_ff(G, J, I, H, K[C + 9], 12, -1958414417);
H = md5_ff(H, G, J, I, K[C + 10], 17, -42063);
I = md5_ff(I, H, G, J, K[C + 11], 22, -1990404162);
J = md5_ff(J, I, H, G, K[C + 12], 7, 1804603682);
G = md5_ff(G, J, I, H, K[C + 13], 12, -40341101);
H = md5_ff(H, G, J, I, K[C + 14], 17, -1502002290);
I = md5_ff(I, H, G, J, K[C + 15], 22, 1236535329);
J = md5_gg(J, I, H, G, K[C + 1], 5, -165796510);
G = md5_gg(G, J, I, H, K[C + 6], 9, -1069501632);
H = md5_gg(H, G, J, I, K[C + 11], 14, 643717713);
I = md5_gg(I, H, G, J, K[C + 0], 20, -373897302);
J = md5_gg(J, I, H, G, K[C + 5], 5, -701558691);
G = md5_gg(G, J, I, H, K[C + 10], 9, 38016083);
H = md5_gg(H, G, J, I, K[C + 15], 14, -660478335);
I = md5_gg(I, H, G, J, K[C + 4], 20, -405537848);
J = md5_gg(J, I, H, G, K[C + 9], 5, 568446438);
G = md5_gg(G, J, I, H, K[C + 14], 9, -1019803690);
H = md5_gg(H, G, J, I, K[C + 3], 14, -187363961);
I = md5_gg(I, H, G, J, K[C + 8], 20, 1163531501);
J = md5_gg(J, I, H, G, K[C + 13], 5, -1444681467);
G = md5_gg(G, J, I, H, K[C + 2], 9, -51403784);
H = md5_gg(H, G, J, I, K[C + 7], 14, 1735328473);
I = md5_gg(I, H, G, J, K[C + 12], 20, -1926607734);
J = md5_hh(J, I, H, G, K[C + 5], 4, -378558);
G = md5_hh(G, J, I, H, K[C + 8], 11, -2022574463);
H = md5_hh(H, G, J, I, K[C + 11], 16, 1839030562);
I = md5_hh(I, H, G, J, K[C + 14], 23, -35309556);
J = md5_hh(J, I, H, G, K[C + 1], 4, -1530992060);
G = md5_hh(G, J, I, H, K[C + 4], 11, 1272893353);
H = md5_hh(H, G, J, I, K[C + 7], 16, -155497632);
I = md5_hh(I, H, G, J, K[C + 10], 23, -1094730640);
J = md5_hh(J, I, H, G, K[C + 13], 4, 681279174);
G = md5_hh(G, J, I, H, K[C + 0], 11, -358537222);
H = md5_hh(H, G, J, I, K[C + 3], 16, -722521979);
I = md5_hh(I, H, G, J, K[C + 6], 23, 76029189);
J = md5_hh(J, I, H, G, K[C + 9], 4, -640364487);
G = md5_hh(G, J, I, H, K[C + 12], 11, -421815835);
H = md5_hh(H, G, J, I, K[C + 15], 16, 530742520);
I = md5_hh(I, H, G, J, K[C + 2], 23, -995338651);
J = md5_ii(J, I, H, G, K[C + 0], 6, -198630844);
G = md5_ii(G, J, I, H, K[C + 7], 10, 1126891415);
H = md5_ii(H, G, J, I, K[C + 14], 15, -1416354905);
I = md5_ii(I, H, G, J, K[C + 5], 21, -57434055);
J = md5_ii(J, I, H, G, K[C + 12], 6, 1700485571);
G = md5_ii(G, J, I, H, K[C + 3], 10, -1894986606);
H = md5_ii(H, G, J, I, K[C + 10], 15, -1051523);
I = md5_ii(I, H, G, J, K[C + 1], 21, -2054922799);
J = md5_ii(J, I, H, G, K[C + 8], 6, 1873313359);
G = md5_ii(G, J, I, H, K[C + 15], 10, -30611744);
H = md5_ii(H, G, J, I, K[C + 6], 15, -1560198380);
I = md5_ii(I, H, G, J, K[C + 13], 21, 1309151649);
J = md5_ii(J, I, H, G, K[C + 4], 6, -145523070);
G = md5_ii(G, J, I, H, K[C + 11], 10, -1120210379);
H = md5_ii(H, G, J, I, K[C + 2], 15, 718787259);
I = md5_ii(I, H, G, J, K[C + 9], 21, -343485551);
}
if (mode == 16) {
return Array(I, H)
} else {
return Array(J, I, H, G)
}

}
function md5_cmn(F, C, B, A, E, D) {
}
function md5_ff(C, B, G, F, A, E, D) {
return md5_cmn((B & G) | ((~B) & F), C, B, A, E, D)
}
function md5_gg(C, B, G, F, A, E, D) {
return md5_cmn((B & F) | (G & (~F)), C, B, A, E, D)
}
function md5_hh(C, B, G, F, A, E, D) {
return md5_cmn(B ^ G ^ F, C, B, A, E, D)
}
function md5_ii(C, B, G, F, A, E, D) {
return md5_cmn(G ^ (B | (~F)), C, B, A, E, D)
}
function core_hmac_md5(C, F) {
var E = str2binl(C);
if (E.length > 16) {
E = core_md5(E, C.length * chrsz)
}
var A = Array(16),
D = Array(16);
for (var B = 0; B < 16; B++) {
A[B] = E[B] ^ 909522486;
D[B] = E[B] ^ 1549556828
}
var G = core_md5(A.concat(str2binl(F)), 512 + F.length * chrsz);
return core_md5(D.concat(G), 512 + 128)
}
var C = (A & 65535) + (D & 65535);
var B = (A >> 16) + (D >> 16) + (C >> 16);
return (B << 16) | (C & 65535)
}
function bit_rol(A, B) {
return (A << B) | (A >>> (32 - B))
}
function str2binl(D) {
var C = Array();
var A = (1 << chrsz) - 1;
for (var B = 0; B < D.length * chrsz; B += chrsz) {
C[B >> 5] |= (D.charCodeAt(B / chrsz) & A) << (B % 32)
}
return C
}
function binl2str(C) {
var D = "";
var A = (1 << chrsz) - 1;
for (var B = 0; B < C.length * 32; B += chrsz) {
D += String.fromCharCode((C[B >> 5] >>> (B % 32)) & A)
}
return D
}
function binl2hex(C) {
var B = hexcase ? "0123456789ABCDEF": "0123456789abcdef";
var D = "";
for (var A = 0; A < C.length * 4; A++) {
D += B.charAt((C[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 < D.length * 4; B += 3) {
var E = (((D[B >> 2] >> 8 * (B % 4)) & 255) << 16) | (((D[B + 1 >> 2] >> 8 * ((B + 1) % 4)) & 255) << 8) | ((D[B + 2 >> 2] >> 8 * ((B + 2) % 4)) & 255);
for (var A = 0; A < 4; A++) {
if (B * 8 + A * 6 > D.length * 32) {
} else {
F += C.charAt((E >> 6 * (3 - A)) & 63)
}

}

}
return F
}
function hexchar2bin(str) {
var arr = [];
for (var i = 0; i < str.length; i = i + 2) {
arr.push("\\x" + str.substr(i, 2))
}
arr = arr.join("");
eval("var temp = '" + arr + "'");
return temp
}

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