JavaScript中最快的MD5实现
那里有很多的MD5 JavaScript实现。 有人知道哪一个是最先进的,最疯狂的和最快的?
我需要这个工具。
我听说约瑟夫·迈尔斯的实施非常快。 另外,他还有一篇关于Javascript优化的长篇文章 ,描述了他在编写实现时学到了什么。 任何对JavaScriptperformance感兴趣的人都可以阅读。
http://www.webreference.com/programming/javascript/jkm3/
他的MD5实现可以在这里find
我build议你在这种情况下使用CryptoJS。
基本上CryptoJS是使用最佳实践和模式在JavaScript中实现的标准和安全密码algorithm的不断增长的集合。 它们速度很快,而且它们有一个一致和简单的界面。
所以,如果你想计算你的密码string的MD5哈希,然后执行如下操作:
<script src="http://crypto-js.googlecode.com/svn/tags/3.0.2/build/rollups/md5.js"></script> <script> var passhash = CryptoJS.MD5(password); $.post( 'includes/login.php', { user: username, pass: passhash }, onLogin, 'json' ); </script>
所以这个脚本会把密码string的哈希值发送到服务器。
有关其他哈希计算algorithm的更多信息和支持,您可以访问:
在select库的同时,看看它是否支持Bower之类的现代框架,传递jslint,支持JQuery的插件模型或者AMD / RequireJS等模块系统,除了积极开发之外,还有不止一个贡献者。 有几个选项可以满足部分或全部这些附加标准:
- CryptoJS :这也许是最广阔的图书馆,每个algorithm都可以单独使用,而不用在你的JS代码中join脂肪。 加上它作为UTF8,UTF16和Base64的编码器/解码器。 我维护注册为Bower包的github存储库 ,以及如何在RequireJS中使用它的说明。
- Spark MD5 :这是基于JKM代码,其他答案提到这也是更快的实现。 不过另外,Spark的实现增加了AMD的支持,通过jslint plus有增量模式。 它没有Base64 o / p,但是它有原始的o / p(即32位int inseadstring数组)。
- JQuery MD5插件 :非常简单脚踏实地,但似乎没有原始模式。
- JavaScript-MD5 :不像Spark那么华丽或快速,但更简单。
来自CryptoJS的示例:
//just include md5.js from the CryptoJS rollups folder var hash = CryptoJS.MD5("Message"); console.log(hash.toString());
上面的库在http://jsperf.com/md5-shootout/7上有一个性能比较。; 在我的机器上,目前的testing(这是公认的老)显示,如果你正在寻找速度火花MD5是你最好的select(以及普通的JKM代码)。 然而,如果你在寻找更全面的库,CryptoJS是你最好的select,虽然它比Spark MD5慢了79%。 不过我想可能CryptoJS最终会达到相同的速度,因为它是一个更活跃的项目。
我发现了一些关于这个问题的文章。 他们都build议Joseph Meyers的实施。
请参阅: http : //jsperf.com/md5-shootout在一些testing
在我寻求最终的速度我看着这个代码,我看到它可以改善。 所以我创build了一个基于Joseph Meyers代码的新JS脚本。
见改进的Jospeh Meyers代码
我只需要支持支持types化数组(DataView,ArrayBuffer等)的HTML5浏览器,我想我使用了Joseph Myers代码,并对其进行了修改以支持传入Uint8Array。 我没有抓住所有的改进,并且仍然可能有一些可以改进的char()数组工件。 我需要这个添加到PouchDB项目。
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--eg, 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); }; })();
目前最快的md5实现(基于Joseph Myers的代码):
https://github.com/iReal/FastMD5
jsPerf比较: http ://jsperf.com/md5-shootout/63
我编写testing来比较几个JavaScript哈希实现,包括这里提到的大多数MD5实现。 要运行testing,请访问http://brillout.github.io/test-javascript-hash-implementations/并稍等一下。;
R. Hill的答案的YaMD5似乎是最快的。
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() };
它困扰我,我无法find一个既快速又支持Unicodestring的实现。
因此,我创build了一个支持Unicodestring的string,并且在当前速度上比现在最快的仅仅asciistring实现更快 (在编写时)
https://github.com/gorhill/yamd5.js
根据约瑟夫·迈尔斯的代码,但使用TypedArrays,加上其他改进。
通过在graphics卡上计算(在WebGL中实现哈希algorithm),应该可以实现更快的散列,正如在那里讨论的关于SHA256: 是否有可能使用用户的video卡在浏览器中计算sha256散列,例如。 通过使用WebGL或Flash?
js-md5支持UTF-8string,数组,ArrayBuffer,AMD ….
快速。 jsperf
为什么不尝试http://phpjs.org/functions/md5/ ?
不幸的是性能是有限的任何模拟脚本,但是这可以呈现真正的MD5散列。 虽然我会build议反对使用md5密码,因为它是一个快速渲染的散列。
你也可以检查我的md5实现 。 它应该是约。 和上面贴出的一样。 不幸的是,性能受限于内部循环,这是不可能优化的。
如果你的应用程序的性能受到MD5的Javascript实现的限制,那么你真的做错了。 考虑体系结构的变化(提示:不要经常使用MD5)