那里有许多MD5 JavaScript实现。有人知道哪一个是最先进,最错误修正和最快的吗?
我需要这个工具。
那里有许多MD5 JavaScript实现。有人知道哪一个是最先进,最错误修正和最快的吗?
我需要这个工具。
Answers:
我听说Joseph的Myers实施非常快。此外,他有一篇关于Javascript优化的文章很长,描述了他在编写实现时学到的知识。对于那些对高性能javascript感兴趣的人来说,这是一本好书。
http://www.webreference.com/programming/javascript/jkm3/
他的MD5实现可在此处找到
var add32
第185行应该是add32
这样,以便我找到了我能找到的最好的分叉并将其更新到此新版本: gist.github.com/MichaelPote/3f0cefaaa9578d7e30be
我建议您在这种情况下使用CryptoJS。
基本上,CryptoJS是使用最佳实践和模式在JavaScript中实现的标准安全加密算法的不断增长的集合。它们速度很快,并且具有一致且简单的界面。
因此,如果要计算密码字符串的MD5哈希,请执行以下操作:
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/core.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/md5.js"></script>
<script>
var passhash = CryptoJS.MD5(password).toString();
$.post(
'includes/login.php',
{ user: username, pass: passhash },
onLogin,
'json' );
</script>
因此,此脚本会将您的密码字符串的哈希值发布到服务器。
有关其他哈希计算算法的更多信息和支持,请访问:
在选择库时,重要的一点是,它是否正在积极开发中,并且是否支持活跃的开发,并且是否拥有超过1个参与者,因此它是否支持Bower等现代框架,传递jslint,支持JQuery插件模型或诸如AMD / RequireJS之类的模块系统也很重要。有几个选项可以满足部分或全部这些附加条件:
来自CryptoJS的示例:
//just include md5.js from the CryptoJS rollups folder
var hash = CryptoJS.MD5("Message");
console.log(hash.toString());
上述库之间的性能比较位于http://jsperf.com/md5-shootout/7。在我的机器上,当前的测试(已经过时了)表明,如果您追求速度,Spark MD5是最好的选择(纯JKM代码也是如此)。但是,如果您正在寻找更全面的库,那么CryptoJS是最好的选择,尽管它比Spark MD5慢79%。但是我可以想象CryptoJS最终会达到相同的速度,因为它是一个更加活跃的项目。
MD5 = function(e) {
function h(a, b) {
var c, d, e, f, g;
e = a & 2147483648;
f = b & 2147483648;
c = a & 1073741824;
d = b & 1073741824;
g = (a & 1073741823) + (b & 1073741823);
return c & d ? g ^ 2147483648 ^ e ^ f : c | d ? g & 1073741824 ? g ^ 3221225472 ^ e ^ f : g ^ 1073741824 ^ e ^ f : g ^ e ^ f
}
function k(a, b, c, d, e, f, g) {
a = h(a, h(h(b & c | ~b & d, e), g));
return h(a << f | a >>> 32 - f, b)
}
function l(a, b, c, d, e, f, g) {
a = h(a, h(h(b & d | c & ~d, e), g));
return h(a << f | a >>> 32 - f, b)
}
function m(a, b, d, c, e, f, g) {
a = h(a, h(h(b ^ d ^ c, e), g));
return h(a << f | a >>> 32 - f, b)
}
function n(a, b, d, c, e, f, g) {
a = h(a, h(h(d ^ (b | ~c), e), g));
return h(a << f | a >>> 32 - f, b)
}
function p(a) {
var b = "",
d = "",
c;
for (c = 0; 3 >= c; c++) d = a >>> 8 * c & 255, d = "0" + d.toString(16), b += d.substr(d.length - 2, 2);
return b
}
var f = [],
q, r, s, t, a, b, c, d;
e = function(a) {
a = a.replace(/\r\n/g, "\n");
for (var b = "", d = 0; d < a.length; d++) {
var c = a.charCodeAt(d);
128 > c ? b += String.fromCharCode(c) : (127 < c && 2048 > c ? b += String.fromCharCode(c >> 6 | 192) : (b += String.fromCharCode(c >> 12 | 224), b += String.fromCharCode(c >> 6 & 63 | 128)), b += String.fromCharCode(c & 63 | 128))
}
return b
}(e);
f = function(b) {
var a, c = b.length;
a = c + 8;
for (var d = 16 * ((a - a % 64) / 64 + 1), e = Array(d - 1), f = 0, g = 0; g < c;) a = (g - g % 4) / 4, f = g % 4 * 8, e[a] |= b.charCodeAt(g) << f, g++;
a = (g - g % 4) / 4;
e[a] |= 128 << g % 4 * 8;
e[d - 2] = c << 3;
e[d - 1] = c >>> 29;
return e
}(e);
a = 1732584193;
b = 4023233417;
c = 2562383102;
d = 271733878;
for (e = 0; e < f.length; e += 16) q = a, r = b, s = c, t = d, a = k(a, b, c, d, f[e + 0], 7, 3614090360), d = k(d, a, b, c, f[e + 1], 12, 3905402710), c = k(c, d, a, b, f[e + 2], 17, 606105819), b = k(b, c, d, a, f[e + 3], 22, 3250441966), a = k(a, b, c, d, f[e + 4], 7, 4118548399), d = k(d, a, b, c, f[e + 5], 12, 1200080426), c = k(c, d, a, b, f[e + 6], 17, 2821735955), b = k(b, c, d, a, f[e + 7], 22, 4249261313), a = k(a, b, c, d, f[e + 8], 7, 1770035416), d = k(d, a, b, c, f[e + 9], 12, 2336552879), c = k(c, d, a, b, f[e + 10], 17, 4294925233), b = k(b, c, d, a, f[e + 11], 22, 2304563134), a = k(a, b, c, d, f[e + 12], 7, 1804603682), d = k(d, a, b, c, f[e + 13], 12, 4254626195), c = k(c, d, a, b, f[e + 14], 17, 2792965006), b = k(b, c, d, a, f[e + 15], 22, 1236535329), a = l(a, b, c, d, f[e + 1], 5, 4129170786), d = l(d, a, b, c, f[e + 6], 9, 3225465664), c = l(c, d, a, b, f[e + 11], 14, 643717713), b = l(b, c, d, a, f[e + 0], 20, 3921069994), a = l(a, b, c, d, f[e + 5], 5, 3593408605), d = l(d, a, b, c, f[e + 10], 9, 38016083), c = l(c, d, a, b, f[e + 15], 14, 3634488961), b = l(b, c, d, a, f[e + 4], 20, 3889429448), a = l(a, b, c, d, f[e + 9], 5, 568446438), d = l(d, a, b, c, f[e + 14], 9, 3275163606), c = l(c, d, a, b, f[e + 3], 14, 4107603335), b = l(b, c, d, a, f[e + 8], 20, 1163531501), a = l(a, b, c, d, f[e + 13], 5, 2850285829), d = l(d, a, b, c, f[e + 2], 9, 4243563512), c = l(c, d, a, b, f[e + 7], 14, 1735328473), b = l(b, c, d, a, f[e + 12], 20, 2368359562), a = m(a, b, c, d, f[e + 5], 4, 4294588738), d = m(d, a, b, c, f[e + 8], 11, 2272392833), c = m(c, d, a, b, f[e + 11], 16, 1839030562), b = m(b, c, d, a, f[e + 14], 23, 4259657740), a = m(a, b, c, d, f[e + 1], 4, 2763975236), d = m(d, a, b, c, f[e + 4], 11, 1272893353), c = m(c, d, a, b, f[e + 7], 16, 4139469664), b = m(b, c, d, a, f[e + 10], 23, 3200236656), a = m(a, b, c, d, f[e + 13], 4, 681279174), d = m(d, a, b, c, f[e + 0], 11, 3936430074), c = m(c, d, a, b, f[e + 3], 16, 3572445317), b = m(b, c, d, a, f[e + 6], 23, 76029189), a = m(a, b, c, d, f[e + 9], 4, 3654602809), d = m(d, a, b, c, f[e + 12], 11, 3873151461), c = m(c, d, a, b, f[e + 15], 16, 530742520), b = m(b, c, d, a, f[e + 2], 23, 3299628645), a = n(a, b, c, d, f[e + 0], 6, 4096336452), d = n(d, a, b, c, f[e + 7], 10, 1126891415), c = n(c, d, a, b, f[e + 14], 15, 2878612391), b = n(b, c, d, a, f[e + 5], 21, 4237533241), a = n(a, b, c, d, f[e + 12], 6, 1700485571), d = n(d, a, b, c, f[e + 3], 10, 2399980690), c = n(c, d, a, b, f[e + 10], 15, 4293915773), b = n(b, c, d, a, f[e + 1], 21, 2240044497), a = n(a, b, c, d, f[e + 8], 6, 1873313359), d = n(d, a, b, c, f[e + 15], 10, 4264355552), c = n(c, d, a, b, f[e + 6], 15, 2734768916), b = n(b, c, d, a, f[e + 13], 21, 1309151649), a = n(a, b, c, d, f[e + 4], 6, 4149444226), d = n(d, a, b, c, f[e + 11], 10, 3174756917), c = n(c, d, a, b, f[e + 2], 15, 718787259), b = n(b, c, d, a, f[e + 9], 21, 3951481745), a = h(a, q), b = h(b, r), c = h(c, s), d = h(d, t);
return (p(a) + p(b) + p(c) + p(d)).toLowerCase()
};
<!DOCTYPE html>
<html>
<body onload="md5.value=MD5(a.value);">
<form oninput="md5.value=MD5(a.value)">Enter String:
<input type="string" id="a" name="a" value="https://www.zibri.org"></br></br>MD5:<output id="md5" name="md5" for="a"></output>
</form>
</body>
</html>
我发现了许多有关该主题的文章。他们都建议约瑟夫·迈耶斯执行。
有关某些测试,请参见:http : //jsperf.com/md5-shootout
在我追求极限速度的过程中,我看了一下这段代码,发现可以改进它。因此,我基于Joseph Meyers代码创建了一个新的JS脚本。
当前最快的md5实现(基于Joseph Myers的代码):
https://github.com/iReal/FastMD5
jsPerf比较:http ://jsperf.com/md5-shootout/63
我只需要支持支持类型化数组(DataView,ArrayBuffer等)的HTML5浏览器,我想我采用了约瑟夫·迈尔斯(Joseph Myers)的代码并对其进行了修改,以支持传入Uint8Array。我没有捕捉到所有改进,并且可能仍然可以改进一些char()数组工件。我需要添加到PouchDB项目中。
var PouchUtils = {};
PouchUtils.Crypto = {};
(function () {
PouchUtils.Crypto.MD5 = function (uint8Array) {
function md5cycle(x, k) {
var a = x[0], b = x[1], c = x[2], d = x[3];
a = ff(a, b, c, d, k[0], 7, -680876936);
d = ff(d, a, b, c, k[1], 12, -389564586);
c = ff(c, d, a, b, k[2], 17, 606105819);
b = ff(b, c, d, a, k[3], 22, -1044525330);
a = ff(a, b, c, d, k[4], 7, -176418897);
d = ff(d, a, b, c, k[5], 12, 1200080426);
c = ff(c, d, a, b, k[6], 17, -1473231341);
b = ff(b, c, d, a, k[7], 22, -45705983);
a = ff(a, b, c, d, k[8], 7, 1770035416);
d = ff(d, a, b, c, k[9], 12, -1958414417);
c = ff(c, d, a, b, k[10], 17, -42063);
b = ff(b, c, d, a, k[11], 22, -1990404162);
a = ff(a, b, c, d, k[12], 7, 1804603682);
d = ff(d, a, b, c, k[13], 12, -40341101);
c = ff(c, d, a, b, k[14], 17, -1502002290);
b = ff(b, c, d, a, k[15], 22, 1236535329);
a = gg(a, b, c, d, k[1], 5, -165796510);
d = gg(d, a, b, c, k[6], 9, -1069501632);
c = gg(c, d, a, b, k[11], 14, 643717713);
b = gg(b, c, d, a, k[0], 20, -373897302);
a = gg(a, b, c, d, k[5], 5, -701558691);
d = gg(d, a, b, c, k[10], 9, 38016083);
c = gg(c, d, a, b, k[15], 14, -660478335);
b = gg(b, c, d, a, k[4], 20, -405537848);
a = gg(a, b, c, d, k[9], 5, 568446438);
d = gg(d, a, b, c, k[14], 9, -1019803690);
c = gg(c, d, a, b, k[3], 14, -187363961);
b = gg(b, c, d, a, k[8], 20, 1163531501);
a = gg(a, b, c, d, k[13], 5, -1444681467);
d = gg(d, a, b, c, k[2], 9, -51403784);
c = gg(c, d, a, b, k[7], 14, 1735328473);
b = gg(b, c, d, a, k[12], 20, -1926607734);
a = hh(a, b, c, d, k[5], 4, -378558);
d = hh(d, a, b, c, k[8], 11, -2022574463);
c = hh(c, d, a, b, k[11], 16, 1839030562);
b = hh(b, c, d, a, k[14], 23, -35309556);
a = hh(a, b, c, d, k[1], 4, -1530992060);
d = hh(d, a, b, c, k[4], 11, 1272893353);
c = hh(c, d, a, b, k[7], 16, -155497632);
b = hh(b, c, d, a, k[10], 23, -1094730640);
a = hh(a, b, c, d, k[13], 4, 681279174);
d = hh(d, a, b, c, k[0], 11, -358537222);
c = hh(c, d, a, b, k[3], 16, -722521979);
b = hh(b, c, d, a, k[6], 23, 76029189);
a = hh(a, b, c, d, k[9], 4, -640364487);
d = hh(d, a, b, c, k[12], 11, -421815835);
c = hh(c, d, a, b, k[15], 16, 530742520);
b = hh(b, c, d, a, k[2], 23, -995338651);
a = ii(a, b, c, d, k[0], 6, -198630844);
d = ii(d, a, b, c, k[7], 10, 1126891415);
c = ii(c, d, a, b, k[14], 15, -1416354905);
b = ii(b, c, d, a, k[5], 21, -57434055);
a = ii(a, b, c, d, k[12], 6, 1700485571);
d = ii(d, a, b, c, k[3], 10, -1894986606);
c = ii(c, d, a, b, k[10], 15, -1051523);
b = ii(b, c, d, a, k[1], 21, -2054922799);
a = ii(a, b, c, d, k[8], 6, 1873313359);
d = ii(d, a, b, c, k[15], 10, -30611744);
c = ii(c, d, a, b, k[6], 15, -1560198380);
b = ii(b, c, d, a, k[13], 21, 1309151649);
a = ii(a, b, c, d, k[4], 6, -145523070);
d = ii(d, a, b, c, k[11], 10, -1120210379);
c = ii(c, d, a, b, k[2], 15, 718787259);
b = ii(b, c, d, a, k[9], 21, -343485551);
x[0] = add32(a, x[0]);
x[1] = add32(b, x[1]);
x[2] = add32(c, x[2]);
x[3] = add32(d, x[3]);
}
function cmn(q, a, b, x, s, t) {
a = add32(add32(a, q), add32(x, t));
return add32((a << s) | (a >>> (32 - s)), b);
}
function ff(a, b, c, d, x, s, t) {
return cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function gg(a, b, c, d, x, s, t) {
return cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function hh(a, b, c, d, x, s, t) {
return cmn(b ^ c ^ d, a, b, x, s, t);
}
function ii(a, b, c, d, x, s, t) {
return cmn(c ^ (b | (~d)), a, b, x, s, t);
}
function md51(s) {
txt = '';
var n = s.length,
state = [1732584193, -271733879, -1732584194, 271733878], i;
for (i = 64; i <= s.length; i += 64) {
md5cycle(state, md5blk(s.subarray(i - 64, i)));
}
s = s.subarray(i - 64);
var tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (i = 0; i < s.length; i++)
tail[i >> 2] |= s[i] << ((i % 4) << 3);
tail[i >> 2] |= 0x80 << ((i % 4) << 3);
if (i > 55) {
md5cycle(state, tail);
for (i = 0; i < 16; i++) tail[i] = 0;
}
tail[14] = n * 8;
md5cycle(state, tail);
return state;
}
/* there needs to be support for Unicode here,
* unless we pretend that we can redefine the MD-5
* algorithm for multi-byte characters (perhaps
* by adding every four 16-bit characters and
* shortening the sum to 32 bits). Otherwise
* I suggest performing MD-5 as if every character
* was two bytes--e.g., 0040 0025 = @%--but then
* how will an ordinary MD-5 sum be matched?
* There is no way to standardize text to something
* like UTF-8 before transformation; speed cost is
* utterly prohibitive. The JavaScript standard
* itself needs to look at this: it should start
* providing access to strings as preformed UTF-8
* 8-bit unsigned value arrays.
*/
function md5blk(s) { /* I figured global was faster. */
var md5blks = [], i; /* Andy King said do it this way. */
for (i = 0; i < 64; i += 4) {
md5blks[i >> 2] = s[i]
+ (s[i + 1] << 8)
+ (s[i + 2] << 16)
+ (s[i + 3] << 24);
}
return md5blks;
}
var hex_chr = '0123456789abcdef'.split('');
function rhex(n) {
var s = '', j = 0;
for (; j < 4; j++)
s += hex_chr[(n >> (j * 8 + 4)) & 0x0F]
+ hex_chr[(n >> (j * 8)) & 0x0F];
return s;
}
function hex(x) {
for (var i = 0; i < x.length; i++)
x[i] = rhex(x[i]);
return x.join('');
}
function md5(s) {
return hex(md51(s));
}
function add32(a, b) {
return (a + b) & 0xFFFFFFFF;
}
return md5(uint8Array);
};
})();
txt = ''
实际上是什么意思?
令我困扰的是我找不到一个既快速又支持Unicode字符串的实现。
因此,我制作了一个支持Unicode字符串,并且在显示时(在撰写本文时)仍然比当前最快的仅ascii-strings字符串实现快:
https://github.com/gorhill/yamd5.js
基于Joseph Myers的代码,但使用TypedArrays,以及其他改进。
这一行长42行,水平可容纳120个字符,看起来不错。快吗 好吧-它足够快,并且与所有其他JS实现大致相同。
我只是想要一些在我的helpers.js文件中看起来不难看的东西,并且不会减慢20英里长的单线衬里的SublimeText的速度。
所以这是我最喜欢的md5。
// A formatted version of a popular md5 implementation.
// Original copyright (c) Paul Johnston & Greg Holt.
// The function itself is now 42 lines long.
function md5(inputString) {
var hc="0123456789abcdef";
function rh(n) {var j,s="";for(j=0;j<=3;j++) s+=hc.charAt((n>>(j*8+4))&0x0F)+hc.charAt((n>>(j*8))&0x0F);return s;}
function ad(x,y) {var l=(x&0xFFFF)+(y&0xFFFF);var m=(x>>16)+(y>>16)+(l>>16);return (m<<16)|(l&0xFFFF);}
function rl(n,c) {return (n<<c)|(n>>>(32-c));}
function cm(q,a,b,x,s,t) {return ad(rl(ad(ad(a,q),ad(x,t)),s),b);}
function ff(a,b,c,d,x,s,t) {return cm((b&c)|((~b)&d),a,b,x,s,t);}
function gg(a,b,c,d,x,s,t) {return cm((b&d)|(c&(~d)),a,b,x,s,t);}
function hh(a,b,c,d,x,s,t) {return cm(b^c^d,a,b,x,s,t);}
function ii(a,b,c,d,x,s,t) {return cm(c^(b|(~d)),a,b,x,s,t);}
function sb(x) {
var i;var nblk=((x.length+8)>>6)+1;var blks=new Array(nblk*16);for(i=0;i<nblk*16;i++) blks[i]=0;
for(i=0;i<x.length;i++) blks[i>>2]|=x.charCodeAt(i)<<((i%4)*8);
blks[i>>2]|=0x80<<((i%4)*8);blks[nblk*16-2]=x.length*8;return blks;
}
var i,x=sb(inputString),a=1732584193,b=-271733879,c=-1732584194,d=271733878,olda,oldb,oldc,oldd;
for(i=0;i<x.length;i+=16) {olda=a;oldb=b;oldc=c;oldd=d;
a=ff(a,b,c,d,x[i+ 0], 7, -680876936);d=ff(d,a,b,c,x[i+ 1],12, -389564586);c=ff(c,d,a,b,x[i+ 2],17, 606105819);
b=ff(b,c,d,a,x[i+ 3],22,-1044525330);a=ff(a,b,c,d,x[i+ 4], 7, -176418897);d=ff(d,a,b,c,x[i+ 5],12, 1200080426);
c=ff(c,d,a,b,x[i+ 6],17,-1473231341);b=ff(b,c,d,a,x[i+ 7],22, -45705983);a=ff(a,b,c,d,x[i+ 8], 7, 1770035416);
d=ff(d,a,b,c,x[i+ 9],12,-1958414417);c=ff(c,d,a,b,x[i+10],17, -42063);b=ff(b,c,d,a,x[i+11],22,-1990404162);
a=ff(a,b,c,d,x[i+12], 7, 1804603682);d=ff(d,a,b,c,x[i+13],12, -40341101);c=ff(c,d,a,b,x[i+14],17,-1502002290);
b=ff(b,c,d,a,x[i+15],22, 1236535329);a=gg(a,b,c,d,x[i+ 1], 5, -165796510);d=gg(d,a,b,c,x[i+ 6], 9,-1069501632);
c=gg(c,d,a,b,x[i+11],14, 643717713);b=gg(b,c,d,a,x[i+ 0],20, -373897302);a=gg(a,b,c,d,x[i+ 5], 5, -701558691);
d=gg(d,a,b,c,x[i+10], 9, 38016083);c=gg(c,d,a,b,x[i+15],14, -660478335);b=gg(b,c,d,a,x[i+ 4],20, -405537848);
a=gg(a,b,c,d,x[i+ 9], 5, 568446438);d=gg(d,a,b,c,x[i+14], 9,-1019803690);c=gg(c,d,a,b,x[i+ 3],14, -187363961);
b=gg(b,c,d,a,x[i+ 8],20, 1163531501);a=gg(a,b,c,d,x[i+13], 5,-1444681467);d=gg(d,a,b,c,x[i+ 2], 9, -51403784);
c=gg(c,d,a,b,x[i+ 7],14, 1735328473);b=gg(b,c,d,a,x[i+12],20,-1926607734);a=hh(a,b,c,d,x[i+ 5], 4, -378558);
d=hh(d,a,b,c,x[i+ 8],11,-2022574463);c=hh(c,d,a,b,x[i+11],16, 1839030562);b=hh(b,c,d,a,x[i+14],23, -35309556);
a=hh(a,b,c,d,x[i+ 1], 4,-1530992060);d=hh(d,a,b,c,x[i+ 4],11, 1272893353);c=hh(c,d,a,b,x[i+ 7],16, -155497632);
b=hh(b,c,d,a,x[i+10],23,-1094730640);a=hh(a,b,c,d,x[i+13], 4, 681279174);d=hh(d,a,b,c,x[i+ 0],11, -358537222);
c=hh(c,d,a,b,x[i+ 3],16, -722521979);b=hh(b,c,d,a,x[i+ 6],23, 76029189);a=hh(a,b,c,d,x[i+ 9], 4, -640364487);
d=hh(d,a,b,c,x[i+12],11, -421815835);c=hh(c,d,a,b,x[i+15],16, 530742520);b=hh(b,c,d,a,x[i+ 2],23, -995338651);
a=ii(a,b,c,d,x[i+ 0], 6, -198630844);d=ii(d,a,b,c,x[i+ 7],10, 1126891415);c=ii(c,d,a,b,x[i+14],15,-1416354905);
b=ii(b,c,d,a,x[i+ 5],21, -57434055);a=ii(a,b,c,d,x[i+12], 6, 1700485571);d=ii(d,a,b,c,x[i+ 3],10,-1894986606);
c=ii(c,d,a,b,x[i+10],15, -1051523);b=ii(b,c,d,a,x[i+ 1],21,-2054922799);a=ii(a,b,c,d,x[i+ 8], 6, 1873313359);
d=ii(d,a,b,c,x[i+15],10, -30611744);c=ii(c,d,a,b,x[i+ 6],15,-1560198380);b=ii(b,c,d,a,x[i+13],21, 1309151649);
a=ii(a,b,c,d,x[i+ 4], 6, -145523070);d=ii(d,a,b,c,x[i+11],10,-1120210379);c=ii(c,d,a,b,x[i+ 2],15, 718787259);
b=ii(b,c,d,a,x[i+ 9],21, -343485551);a=ad(a,olda);b=ad(b,oldb);c=ad(c,oldc);d=ad(d,oldd);
}
return rh(a)+rh(b)+rh(c)+rh(d);
}
但实际上,我只是出于美学考虑而发布了它。另外,加上注释,它正好是4000字节。请不要问为什么。对于我的强迫症/反叛行为,我无法给出正确的解释。另外,谢谢保罗·约翰斯顿,谢谢格雷格·霍尔特。(旁注:你们省略了一些var关键字,所以我可以随意添加。)
也许这个包很有用
https://www.npmjs.com/package/pure-md5
console.time('latin');
const latin = md5('hello');
console.timeEnd('latin');
console.log('Привет: ', md5('Привет'));
console.log('嘿: ', md5('嘿'));
<script src="https://unpkg.com/pure-md5@latest/lib/index.js"></script>
为什么不尝试http://phpjs.org/functions/md5/?
不幸的是,任何模拟脚本的性能都受到限制,但是这会呈现真实的md5哈希。尽管我建议不要使用md5作为密码,因为它是一种快速呈现的哈希。
如在SHA256上所讨论的,通过在图形卡上进行计算(WebGL中的实现哈希算法),应该可以实现更快的哈希处理。例如,是否有可能使用用户的视频卡在浏览器中计算sha256哈希。通过使用WebGL或Flash?
您还可以检查我的md5实现。它应该是大约。与上面发布的其他内容相同。不幸的是,性能受到内部循环的限制,无法进一步优化。
如果应用程序的性能受到MD5的Javascript实现的限制,那么您实际上是在做错事。考虑架构更改(提示:减少使用MD5的频率)