Html 如何生成随机标识图标？
我正在寻找一种最基本的生成随机信息的方法，而不考虑用户电子邮件或IP地址等信息。维基百科列出了许多实现方法，可以实现这一点：Html 如何生成随机标识图标？,html,identicon,Html,Identicon,我正在寻找一种最基本的生成随机信息的方法，而不考虑用户电子邮件或IP地址等信息。维基百科列出了许多实现方法，可以实现这一点： 您可以使用所需的任意随机数据作为库调用的种子。Wikipedia列出了许多实现方法： 你可以用你想要的任何随机数据来进行库调用。前几天我写了这篇文章： 它将生成一个随机十六进制散列，并显示gravatar.com上的identicon和monsterID // Load the MD5 script MD5 = makeMD5(); seed = rando
您可以使用所需的任意随机数据作为库调用的种子。Wikipedia列出了许多实现方法：
你可以用你想要的任何随机数据来进行库调用。前几天我写了这篇文章： 它将生成一个随机十六进制散列，并显示gravatar.com上的identicon和monsterID
// Load the MD5 script
MD5 = makeMD5();
seed = randomString();
image = document.getElementById('image');
image2 = document.getElementById('image2');
hash = MD5.hex(seed);
image.src = 'http://www.gravatar.com/avatar/'+hash+'?d=identicon&s=150';
image2.src = 'http://www.gravatar.com/avatar/'+hash+'?d=monsterid&s=150';
function randomString(length) {
var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz'.split('');
if (! length) {
length = Math.floor(Math.random() * chars.length);
}
var str = '';
for (var i = 0; i < length; i++) {
str += chars[Math.floor(Math.random() * chars.length)];
}
return str;
}
/*
* A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
* Digest Algorithm, as defined in RFC 1321.
* Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
* Distributed under the BSD License
* See http://pajhome.org.uk/crypt/md5 for more info.
*/
function makeMD5() {
/*
* Calculate the MD5 of an array of little-endian words, and a bit length
*/
function core_md5(x, len) {
/* append padding */
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>> 9) << 4) + 14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for(var i = 0; i < x.length; i += 16) {
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);
b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);
c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);
d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);
d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);
a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);
b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);
c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);
d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);
a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);
b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);
b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);
c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);
d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);
a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);
b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);
c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);
d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);
d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);
a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);
b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
}
return [a, b, c, d];
}
/*
* These functions implement the four basic operations the algorithm uses.
*/
function md5_cmn(q, a, b, x, s, t) {
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t) {
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t) {
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t) {
return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t) {
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
/*
* Calculate the HMAC-MD5, of a key and some data
*/
function core_hmac_md5(key, data) {
var bkey = str2binl(key);
if(bkey.length > 16) bkey = core_md5(bkey, key.length * MD5.chrsz);
var ipad = [], opad = [];
for(var i = 0; i < 16; i++) {
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
}
var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * MD5.chrsz);
return core_md5(opad.concat(hash), 512 + 128);
}
/*
* Add integers, wrapping at 2^32. This uses 16-bit operations internally
* to work around bugs in some JS interpreters.
*/
function safe_add(x, y) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
/*
* Bitwise rotate a 32-bit number to the left.
*/
function bit_rol(num, cnt) {
return (num << cnt) | (num >>> (32 - cnt));
}
/*
* Convert a string to an array of little-endian words
* If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
*/
function str2binl(str) {
var bin = [], chrsz = MD5.chrsz;
var mask = (1 << chrsz) - 1;
for(var i = 0; i < str.length * chrsz; i += chrsz)
bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
return bin;
}
/*
* Convert an array of little-endian words to a string
*/
function binl2str(bin) {
var str = "", chrsz = MD5.chrsz;
var mask = (1 << chrsz) - 1;
for(var i = 0; i < bin.length * 32; i += chrsz)
str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
return str;
}
/*
* Convert an array of little-endian words to a hex string.
*/
function binl2hex(binarray) {
var hex_tab = MD5.hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var str = "";
for(var i = 0; i < binarray.length * 4; i++) {
str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
}
return str;
}
/*
* Convert an array of little-endian words to a base-64 string
*/
function binl2b64(binarray) {
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var str = "";
for(var i = 0; i < binarray.length * 4; i += 3) {
var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16)
| (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
| ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
for(var j = 0; j < 4; j++) {
if(i * 8 + j * 6 > binarray.length * 32) str += MD5.b64pad;
else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
}
}
return str;
}
return {
/*
* Configurable variables. You may need to tweak these to be compatible with
* the server-side, but the defaults work in most cases.
*/
hexcase: 0, // hex output format. 0 - lowercase; 1 - uppercase
b64pad: "", // base-64 pad character. "=" for strict RFC compliance
chrsz: 8, // bits per input character. 8 - ASCII; 16 - Unicode
/*
* These are the functions you'll usually want to call
* They take string arguments and return either hex or base-64 encoded strings
*/
hex:function( s ) {
return binl2hex( core_md5( str2binl( s ), s.length * MD5.chrsz ) );
},
base64:function( s ) {
return binl2b64( core_md5( str2binl( s ), s.length * MD5.chrsz ) );
},
string:function( s ) {
return binl2str( core_md5( str2binl( s ), s.length * MD5.chrsz ) );
},
hmac:{
hex:function( key, data ) {
return binl2hex( core_hmac_md5( key, data ) );
},
base64:function( key, data ) {
return binl2b64( core_hmac_md5( key, data ) );
},
string:function( key, data ) {
return binl2str( core_hmac_md5( key, data ) );
}
},
test:function() { // Perform a simple self-test to see if the VM is working
return this.hex("abc") == "900150983cd24fb0d6963f7d28e17f72";
}
};
}
//加载MD5脚本
MD5=makeMD5（）；
seed=randomString（）；
image=document.getElementById（'image'）；
image2=document.getElementById（'image2'）；
hash=MD5.hex（种子）；
image.src=http://www.gravatar.com/avatar/“+hash+”？d=identicon&s=150'；
image2.src=http://www.gravatar.com/avatar/“+hash+”？d=monsterid&s=150'；
函数随机字符串（长度）{
var chars='0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz'。拆分（“”）；
如果（！长度）{
长度=Math.floor（Math.random（）*chars.length）；
}
var-str=''；
对于（变量i=0；i>5]|=0x80>>9）16）bkey=core_md5（bkey，key.length*md5.chrsz）；
变量ipad=[]，opad=[]；
对于（变量i=0；i<16；i++）{
ipad[i]=bkey[i]^0x3636；
opad[i]=bkey[i]^0x5c；
}
var hash=core_md5（ipad.concat（str2binl（data）），512+data.length*md5.chrsz）；
返回core_md5（opad.concat（散列），512+128）；
}
/*
*添加整数，以2^32换行。这在内部使用16位操作
*解决一些JS解释器中的错误。
*/
功能安全添加（x，y）{
变量lsw=（x&0xFFFF）+（y&0xFFFF）；
风险值msw=（x>>16）+（y>>16）+（lsw>>16）；
返回（msw>（32-cnt））；
}
/*
*将字符串转换为小尾端字数组
*如果chrsz是ASCII，则大于255的字符的hi字节将被忽略。
*/
函数str2binl（str）{
var bin=[]，chrsz=MD5.chrsz；
变量掩码=（1>5]|=（str.charCodeAt（i/chrsz）和掩码）5]>>>（i%32））和掩码）；
返回str；
}
/*
*将小端字数组转换为十六进制字符串。
*/
函数binl2hex（二进制数组）{
var hex_tab=MD5.hexcase？“0123456789ABCDEF”：“0123456789ABCDEF”；
var str=“”；
对于（变量i=0；i>2]>>（（i%4）*8+4））&0xF）+
十六进制制表符（（二进制[i>>2]>>（（i%4）*8））&0xF）；
}
返回str；
}
/*
*将小尾端字数组转换为base-64字符串
*/
函数binl2b64（二进制数组）{
var tab=“abcdefghijklmnopqrstuvxyzabefghijklmnopqrstuvxyzo123456789+/”；
var str=“”；
对于（变量i=0；i>2]>>8*（i%4））&0xFF>2]>>8*（（i+1）%4））&0xFF>2]>>8*（（i+2）%4））&0xFF）；
对于（var j=0；j<4；j++）{
如果（i*8+j*6>binarray.length*32）str+=MD5.b64pad；
else str+=tab.charAt（（三元组>>6*（3-j））&0x3F）；
}
}
返回str；
}
返回{
/*
*可配置变量。您可能需要调整这些变量以与兼容
*服务器端，但默认值在大多数情况下都有效。
*/
hexcase:0，//十六进制输出格式。0-小写；1-大写
b64pad:，//base-64 pad character.“=”用于严格遵守RFC
chrsz:8，//每个输入字符位。8-ASCII；16-Unicode
/*
*这些是您通常要调用的函数
*它们接受字符串参数并返回十六进制或base-64编码的字符串
*/
十六进制：函数{
返回binl2hex（堆芯md5（str2binl，s.length*md5.chrsz））；
},
base64:函数{
返回binl2b64（核心单元md5（str2binl，s.length*md5.chrsz））；
},
字符串：函数{
返回binl2str（堆芯md5（str2binl，s.length*md5.chrsz））；
},
hmac：{
十六进制：函数（键、数据）{
返回binl2hex（core_hmac_md5（键，数据））；
},
base64：函数（键、数据）{
返回binl2b64（core_hmac_md5（key，data））；
},
字符串：函数（键、数据）{
返回binl2str（核心hmac md5（键、数据））；
}
},
test:function（）{//执行一个简单的自检，以查看VM是否正常工作
返回此.hex（“abc”）=“900150983cd24fb0d6963f7d28e17f72”；
}
};
}
// Load the MD5 script
MD5 = makeMD5();
seed = randomString();
image = document.getElementById('image');
image2 = document.getElementById('image2');
hash = MD5.hex(seed);
image.src = 'http://www.gravatar.com/avatar/'+hash+'?d=identicon&s=150';
image2.src = 'http://www.gravatar.com/avatar/'+hash+'?d=monsterid&s=150';
function randomString(length) {
var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz'.split('');
if (! length) {
length = Math.floor(Math.random() * chars.length);
}
var str = '';
for (var i = 0; i < length; i++) {
str += chars[Math.floor(Math.random() * chars.length)];
}
return str;
}
/*
* A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
* Digest Algorithm, as defined in RFC 1321.
* Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
* Distributed under the BSD License
* See http://pajhome.org.uk/crypt/md5 for more info.
*/
function makeMD5() {
/*
* Calculate the MD5 of an array of little-endian words, and a bit length
*/
function core_md5(x, len) {
/* append padding */
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>> 9) << 4) + 14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for(var i = 0; i < x.length; i += 16) {
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);
b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);
c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);
d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);
d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);
a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);
b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);
c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);
d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);
a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);
b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);
b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);
c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);
d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);
a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);
b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);
c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);
d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);
d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);
a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);
b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
}
return [a, b, c, d];
}
/*
* These functions implement the four basic operations the algorithm uses.
*/
function md5_cmn(q, a, b, x, s, t) {
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t) {
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t) {
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t) {
return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t) {
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
/*
* Calculate the HMAC-MD5, of a key and some data
*/
function core_hmac_md5(key, data) {
var bkey = str2binl(key);
if(bkey.length > 16) bkey = core_md5(bkey, key.length * MD5.chrsz);
var ipad = [], opad = [];
for(var i = 0; i < 16; i++) {
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
}
var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * MD5.chrsz);
return core_md5(opad.concat(hash), 512 + 128);
}
/*
* Add integers, wrapping at 2^32. This uses 16-bit operations internally
* to work around bugs in some JS interpreters.
*/
function safe_add(x, y) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
/*
* Bitwise rotate a 32-bit number to the left.
*/
function bit_rol(num, cnt) {
return (num << cnt) | (num >>> (32 - cnt));
}
/*
* Convert a string to an array of little-endian words
* If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
*/
function str2binl(str) {
var bin = [], chrsz = MD5.chrsz;
var mask = (1 << chrsz) - 1;
for(var i = 0; i < str.length * chrsz; i += chrsz)
bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
return bin;
}
/*
* Convert an array of little-endian words to a string
*/
function binl2str(bin) {
var str = "", chrsz = MD5.chrsz;
var mask = (1 << chrsz) - 1;
for(var i = 0; i < bin.length * 32; i += chrsz)
str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
return str;
}
/*
* Convert an array of little-endian words to a hex string.
*/
function binl2hex(binarray) {
var hex_tab = MD5.hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var str = "";
for(var i = 0; i < binarray.length * 4; i++) {
str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
}
return str;
}
/*
* Convert an array of little-endian words to a base-64 string
*/
function binl2b64(binarray) {
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var str = "";
for(var i = 0; i < binarray.length * 4; i += 3) {
var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16)
| (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
| ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
for(var j = 0; j < 4; j++) {
if(i * 8 + j * 6 > binarray.length * 32) str += MD5.b64pad;
else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
}
}
return str;
}
return {
/*
* Configurable variables. You may need to tweak these to be compatible with
* the server-side, but the defaults work in most cases.
*/
hexcase: 0, // hex output format. 0 - lowercase; 1 - uppercase
b64pad: "", // base-64 pad character. "=" for strict RFC compliance
chrsz: 8, // bits per input character. 8 - ASCII; 16 - Unicode
/*
* These are the functions you'll usually want to call
* They take string arguments and return either hex or base-64 encoded strings
*/
hex:function( s ) {
return binl2hex( core_md5( str2binl( s ), s.length * MD5.chrsz ) );
},
base64:function( s ) {
return binl2b64( core_md5( str2binl( s ), s.length * MD5.chrsz ) );
},
string:function( s ) {
return binl2str( core_md5( str2binl( s ), s.length * MD5.chrsz ) );
},
hmac:{
hex:function( key, data ) {
return binl2hex( core_hmac_md5( key, data ) );
},
base64:function( key, data ) {
return binl2b64( core_hmac_md5( key, data ) );
},
string:function( key, data ) {
return binl2str( core_hmac_md5( key, data ) );
}
},
test:function() { // Perform a simple self-test to see if the VM is working
return this.hex("abc") == "900150983cd24fb0d6963f7d28e17f72";
}
};
}
//加载MD5脚本
MD5=makeMD5（）；
seed=randomString（）；
image=document.getElementById（'image'）；
image2=document.getElementById（'image2'）；
hash=MD5.hex（种子）；
image.src=http://www.gravatar.com/avatar/“+hash+”？d=identicon&s=150'；
image2.src=http://www.gravatar.com/avatar/“+hash+”？d=monsterid&s=150'；
函数随机字符串（长度）{
var chars='0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz'。拆分（“”）；
如果（！长度）{
长度=Math.floor（Math.random（）*chars.length）；
}
var-str=''；
对于（变量i=0；i