关于微信小程序MD5的方法的解析
这篇文章主要介绍了微信小程序 MD5的方法详解及实例代码的相关资料,需要的朋友可以参考下
微信小程序 MD5的方法详解
生成的文件可以放在utils文件中哦！！！
/** A JavaScript implementation of the RSA Data Security, Inc. MD5 Message* Digest Algorithm, as defined in RFC 1321.* Version 1.1 Copyright (C) Paul Johnston 1999 - 2002.* Code also contributed by Greg Holt* See http://pajhome.org.uk/site/legal.html for details.*//** 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 rol(num, cnt){return (num << cnt) | (num >>> (32 - cnt))}/** These functions implement the four basic operations the algorithm uses.*/function cmn(q, a, b, x, s, t){return safe_add(rol(safe_add(safe_add(a, q), safe_add(x, t)), 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)}/** Calculate the MD5 of an array of little-endian words, producing an array* of little-endian words.*/function coreMD5(x){var a = 1732584193var b = -271733879var c = -1732584194var d = 271733878for(var i = 0; i < x.length; i += 16){var olda = avar oldb = bvar oldc = cvar oldd = da = 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 = safe_add(a, olda)b = safe_add(b, oldb)c = safe_add(c, oldc)d = safe_add(d, oldd)}return [a, b, c, d]}/** Convert an array of little-endian words to a hex string.*/function binl2hex(binarray){var hex_tab = "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 base64 encoded string.*/function binl2b64(binarray){var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"var str = ""for(var i = 0; i < binarray.length * 32; i += 6){str += tab.charAt(((binarray[i>>5] << (i%32)) & 0x3F) |((binarray[i>>5+1] >> (32-i%32)) & 0x3F))}return str}/** Convert an 8-bit character string to a sequence of 16-word blocks, stored* as an array, and append appropriate padding for MD4/5 calculation.* If any of the characters are >255, the high byte is silently ignored.*/function str2binl(str){var nblk = ((str.length + 8) >> 6) + 1 // number of 16-word blocksvar blks = new Array(nblk * 16)for(var i = 0; i < nblk * 16; i++) blks[i] = 0for(var i = 0; i < str.length; i++)blks[i>>2] |= (str.charCodeAt(i) & 0xFF) << ((i%4) * 8)blks[i>>2] |= 0x80 << ((i%4) * 8)blks[nblk*16-2] = str.length * 8return blks}/** Convert a wide-character string to a sequence of 16-word blocks, stored as* an array, and append appropriate padding for MD4/5 calculation.*/function strw2binl(str){var nblk = ((str.length + 4) >> 5) + 1 // number of 16-word blocksvar blks = new Array(nblk * 16)for(var i = 0; i < nblk * 16; i++) blks[i] = 0for(var i = 0; i < str.length; i++)blks[i>>1] |= str.charCodeAt(i) << ((i%2) * 16)blks[i>>1] |= 0x80 << ((i%2) * 16)blks[nblk*16-2] = str.length * 16return blks}/** External interface*/function hexMD5 (str) { return binl2hex(coreMD5( str2binl(str))) }function hexMD5w(str) { return binl2hex(coreMD5(strw2binl(str))) }function b64MD5 (str) { return binl2b64(coreMD5( str2binl(str))) }function b64MD5w(str) { return binl2b64(coreMD5(strw2binl(str))) }/* Backward compatibility */function calcMD5(str) { return binl2hex(coreMD5( str2binl(str))) }module.exports = {hexMD5: hexMD5}
使用方式 ：
var utilMd5 = require('../../utils/md5.js');var password = utilMd5.hexMD5(password);
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