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/*
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* 小程序MD5加密算法封装
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* +-----------------------------------------------------
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* Author: 武当山道士
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* Created: 2018-01-06
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* Md5 Lib Source: http://cdn.bootcss.com/blueimp-md5/1.1.0/js/md5.js
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* Tips: js库文件改装,加密算法没动，我只是封装了一下，便于小程序调用
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* Thanks: 感谢js库文件作者 Sebastian Tschan 的辛勤付出
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* +-----------------------------------------------------
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* Usage:
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*
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* 引入(比如index.js页面引入md5.js):
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* //pages/index.js
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* import md5 from 'utils/md5.js';
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*
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* 调用base64MD5加密:
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* var encryptedStr = md5('需要加密的字符串');
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*/
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function safe_add(x, y) {
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var lsw = (x & 0xFFFF) + (y & 0xFFFF),
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msw = (x >> 16) + (y >> 16) + (lsw >> 16);
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return (msw << 16) | (lsw & 0xFFFF);
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}
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/*
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* Bitwise rotate a 32-bit number to the left.
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*/
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function bit_rol(num, cnt) {
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return (num << cnt) | (num >>> (32 - cnt));
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}
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/*
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* These functions implement the four basic operations the algorithm uses.
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*/
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function md5_cmn(q, a, b, x, s, t) {
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return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
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}
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function md5_ff(a, b, c, d, x, s, t) {
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return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
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}
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function md5_gg(a, b, c, d, x, s, t) {
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return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
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}
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function md5_hh(a, b, c, d, x, s, t) {
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return md5_cmn(b ^ c ^ d, a, b, x, s, t);
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}
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function md5_ii(a, b, c, d, x, s, t) {
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return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
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}
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/*
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* Calculate the MD5 of an array of little-endian words, and a bit length.
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*/
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function binl_md5(x, len) {
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/* append padding */
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x[len >> 5] |= 0x80 << (len % 32);
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x[(((len + 64) >>> 9) << 4) + 14] = len;
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var i, olda, oldb, oldc, oldd,
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a = 1732584193,
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b = -271733879,
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c = -1732584194,
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d = 271733878;
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for (i = 0; i < x.length; i += 16) {
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olda = a;
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oldb = b;
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oldc = c;
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oldd = d;
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a = md5_ff(a, b, c, d, x[i], 7, -680876936);
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d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
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c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
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b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
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a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
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d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
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c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
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b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
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a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
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d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
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c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
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b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
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a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
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d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
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c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
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b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
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a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
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d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
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c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
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b = md5_gg(b, c, d, a, x[i], 20, -373897302);
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a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
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d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
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c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
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b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
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a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
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d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
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c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
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b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
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a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
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d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
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c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
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b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
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a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
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d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
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c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
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b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
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a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
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d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
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c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
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b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
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a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
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d = md5_hh(d, a, b, c, x[i], 11, -358537222);
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c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
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b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
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a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
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d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
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c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
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b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
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a = md5_ii(a, b, c, d, x[i], 6, -198630844);
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d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
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c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
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b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
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a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
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d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
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c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
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b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
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a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
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d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
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c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
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b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
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a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
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d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
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c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
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b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
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a = safe_add(a, olda);
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b = safe_add(b, oldb);
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c = safe_add(c, oldc);
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d = safe_add(d, oldd);
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}
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return [a, b, c, d];
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}
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/*
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* Convert an array of little-endian words to a string
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*/
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function binl2rstr(input) {
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var i,
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output = '';
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for (i = 0; i < input.length * 32; i += 8) {
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output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF);
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}
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return output;
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}
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/*
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* Convert a raw string to an array of little-endian words
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* Characters >255 have their high-byte silently ignored.
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*/
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function rstr2binl(input) {
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var i,
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output = [];
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output[(input.length >> 2) - 1] = undefined;
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for (i = 0; i < output.length; i += 1) {
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output[i] = 0;
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}
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for (i = 0; i < input.length * 8; i += 8) {
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output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (i % 32);
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}
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return output;
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}
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/*
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* Calculate the MD5 of a raw string
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*/
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function rstr_md5(s) {
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return binl2rstr(binl_md5(rstr2binl(s), s.length * 8));
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}
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/*
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* Calculate the HMAC-MD5, of a key and some data (raw strings)
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*/
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function rstr_hmac_md5(key, data) {
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var i,
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bkey = rstr2binl(key),
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ipad = [],
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opad = [],
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hash;
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ipad[15] = opad[15] = undefined;
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if (bkey.length > 16) {
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bkey = binl_md5(bkey, key.length * 8);
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}
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for (i = 0; i < 16; i += 1) {
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ipad[i] = bkey[i] ^ 0x36363636;
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opad[i] = bkey[i] ^ 0x5C5C5C5C;
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}
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hash = binl_md5(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
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return binl2rstr(binl_md5(opad.concat(hash), 512 + 128));
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}
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/*
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* Convert a raw string to a hex string
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*/
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function rstr2hex(input) {
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var hex_tab = '0123456789abcdef',
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output = '',
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x,
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i;
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for (i = 0; i < input.length; i += 1) {
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x = input.charCodeAt(i);
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output += hex_tab.charAt((x >>> 4) & 0x0F) +
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hex_tab.charAt(x & 0x0F);
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}
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return output;
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}
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/*
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* Encode a string as utf-8
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*/
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function str2rstr_utf8(input) {
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return unescape(encodeURIComponent(input));
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}
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/*
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* Take string arguments and return either raw or hex encoded strings
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*/
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function raw_md5(s) {
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return rstr_md5(str2rstr_utf8(s));
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}
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function hex_md5(s) {
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return rstr2hex(raw_md5(s));
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}
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function raw_hmac_md5(k, d) {
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return rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d));
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}
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function hex_hmac_md5(k, d) {
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return rstr2hex(raw_hmac_md5(k, d));
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}
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/**
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* 暴露接口给小程序 因为export default，所以引入的时候可以自定义方法名称
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* +--------------------
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* @param {String} string 需要加密的字符串
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* @param {String} key 加密key
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* @param {Boolean} raw 规则 false: 返回hex_md5, true: 返回raw_md5
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*/
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export default function md5(string, key, raw) {
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if (!key) {
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if (!raw) {
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return hex_md5(string);
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}
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return raw_md5(string);
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}
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if (!raw) {
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return hex_hmac_md5(key, string);
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}
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return raw_hmac_md5(key, string);
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} |
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\ No newline at end of file |
