前端技巧之js-md5的简单使用方法
更新时间：2023年12月08日 10:35:00 作者：前端Outman
这篇文章主要给大家介绍了关于前端技巧之js-md5的简单使用,js-md5是一种前端加密算法,用于在前端对密码等敏感信息进行加密,文中通过代码介绍的非常详细,需要的朋友可以参考下
引言
MD5（单项散列算法）的全称是Message-Digest Algorithm 5（信息-摘要算法），经MD2、MD3和MD4发展而来。
功能：1.输入任意长度的信息，经过处理，输出32位的信息；2.不同的输入得到的不同的结果（唯一性）；3.根据32位的输入结果不可能反推出输入的信息（不可逆）用途：1.防止被篡改，发布文件时同时发布文件的MD5值，在对方收到文件后再次进行MD5计算，最终获得的结果一样，说明未被篡改；2.防止直接看到明文，这也是它最常见的用途，经常在某些页面点击提交后，密码就通过md5加密，直接由几位密码突然填满了密码框；3.作为数字签名。
1.安装js-md5
npm i js-md5
2.引入 & 挂载
import md5 from 'js-md5'; Vue.prototype.$md5Util = md5;
3.使用
this.$md5Util("请将我这段文字加密")
4.加密结果
// 加密结果：aa888a86dca6e9d5ae216c23070e8c47
5.js-md5 源码
md5中还包含hex/digest/array/arrayBuffer/base64 等多种使用方式，可通过下方js-md5的源码详细了解！
/**
* [js-md5]{@link https://github.com/emn178/js-md5}
*
* @namespace md5
* @version 0.7.3
* @author Chen, Yi-Cyuan [emn178@gmail.com]
* @copyright Chen, Yi-Cyuan 2014-2017
* @license MIT
*/
(function () {
'use strict';
var ERROR = 'input is invalid type';
var WINDOW = typeof window === 'object';
var root = WINDOW ? window : {};
if (root.JS_MD5_NO_WINDOW) {
WINDOW = false;
}
var WEB_WORKER = !WINDOW && typeof self === 'object';
var NODE_JS = !root.JS_MD5_NO_NODE_JS && typeof process === 'object' && process.versions && process.versions.node;
if (NODE_JS) {
root = global;
} else if (WEB_WORKER) {
root = self;
}
var COMMON_JS = !root.JS_MD5_NO_COMMON_JS && typeof module === 'object' && module.exports;
var AMD = typeof define === 'function' && define.amd;
var ARRAY_BUFFER = !root.JS_MD5_NO_ARRAY_BUFFER && typeof ArrayBuffer !== 'undefined';
var HEX_CHARS = '0123456789abcdef'.split('');
var EXTRA = [128, 32768, 8388608, -2147483648];
var SHIFT = [0, 8, 16, 24];
var OUTPUT_TYPES = ['hex', 'array', 'digest', 'buffer', 'arrayBuffer', 'base64'];
var BASE64_ENCODE_CHAR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');
var blocks = [], buffer8;
if (ARRAY_BUFFER) {
var buffer = new ArrayBuffer(68);
buffer8 = new Uint8Array(buffer);
blocks = new Uint32Array(buffer);
}
if (root.JS_MD5_NO_NODE_JS || !Array.isArray) {
Array.isArray = function (obj) {
return Object.prototype.toString.call(obj) === '[object Array]';
};
}
if (ARRAY_BUFFER && (root.JS_MD5_NO_ARRAY_BUFFER_IS_VIEW || !ArrayBuffer.isView)) {
ArrayBuffer.isView = function (obj) {
return typeof obj === 'object' && obj.buffer && obj.buffer.constructor === ArrayBuffer;
};
}
/**
* @method hex
* @memberof md5
* @description Output hash as hex string
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {String} Hex string
* @example
* md5.hex('The quick brown fox jumps over the lazy dog');
* // equal to
* md5('The quick brown fox jumps over the lazy dog');
*/
/**
* @method digest
* @memberof md5
* @description Output hash as bytes array
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {Array} Bytes array
* @example
* md5.digest('The quick brown fox jumps over the lazy dog');
*/
/**
* @method array
* @memberof md5
* @description Output hash as bytes array
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {Array} Bytes array
* @example
* md5.array('The quick brown fox jumps over the lazy dog');
*/
/**
* @method arrayBuffer
* @memberof md5
* @description Output hash as ArrayBuffer
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {ArrayBuffer} ArrayBuffer
* @example
* md5.arrayBuffer('The quick brown fox jumps over the lazy dog');
*/
/**
* @method buffer
* @deprecated This maybe confuse with Buffer in node.js. Please use arrayBuffer instead.
* @memberof md5
* @description Output hash as ArrayBuffer
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {ArrayBuffer} ArrayBuffer
* @example
* md5.buffer('The quick brown fox jumps over the lazy dog');
*/
/**
* @method base64
* @memberof md5
* @description Output hash as base64 string
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {String} base64 string
* @example
* md5.base64('The quick brown fox jumps over the lazy dog');
*/
var createOutputMethod = function (outputType) {
return function (message) {
return new Md5(true).update(message)[outputType]();
};
};
/**
* @method create
* @memberof md5
* @description Create Md5 object
* @returns {Md5} Md5 object.
* @example
* var hash = md5.create();
*/
/**
* @method update
* @memberof md5
* @description Create and update Md5 object
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {Md5} Md5 object.
* @example
* var hash = md5.update('The quick brown fox jumps over the lazy dog');
* // equal to
* var hash = md5.create();
* hash.update('The quick brown fox jumps over the lazy dog');
*/
var createMethod = function () {
var method = createOutputMethod('hex');
if (NODE_JS) {
method = nodeWrap(method);
}
method.create = function () {
return new Md5();
};
method.update = function (message) {
return method.create().update(message);
};
for (var i = 0; i < OUTPUT_TYPES.length; ++i) {
var type = OUTPUT_TYPES[i];
method[type] = createOutputMethod(type);
}
return method;
};
var nodeWrap = function (method) {
var crypto = eval("require('crypto')");
var Buffer = eval("require('buffer').Buffer");
var nodeMethod = function (message) {
if (typeof message === 'string') {
return crypto.createHash('md5').update(message, 'utf8').digest('hex');
} else {
if (message === null || message === undefined) {
throw ERROR;
} else if (message.constructor === ArrayBuffer) {
message = new Uint8Array(message);
}
}
if (Array.isArray(message) || ArrayBuffer.isView(message) ||
message.constructor === Buffer) {
return crypto.createHash('md5').update(new Buffer(message)).digest('hex');
} else {
return method(message);
}
};
return nodeMethod;
};
/**
* Md5 class
* @class Md5
* @description This is internal class.
* @see {@link md5.create}
*/
function Md5(sharedMemory) {
if (sharedMemory) {
blocks[0] = blocks[16] = blocks[1] = blocks[2] = blocks[3] =
blocks[4] = blocks[5] = blocks[6] = blocks[7] =
blocks[8] = blocks[9] = blocks[10] = blocks[11] =
blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
this.blocks = blocks;
this.buffer8 = buffer8;
} else {
if (ARRAY_BUFFER) {
var buffer = new ArrayBuffer(68);
this.buffer8 = new Uint8Array(buffer);
this.blocks = new Uint32Array(buffer);
} else {
this.blocks = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
}
}
this.h0 = this.h1 = this.h2 = this.h3 = this.start = this.bytes = this.hBytes = 0;
this.finalized = this.hashed = false;
this.first = true;
}
/**
* @method update
* @memberof Md5
* @instance
* @description Update hash
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {Md5} Md5 object.
* @see {@link md5.update}
*/
Md5.prototype.update = function (message) {
if (this.finalized) {
return;
}
var notString, type = typeof message;
if (type !== 'string') {
if (type === 'object') {
if (message === null) {
throw ERROR;
} else if (ARRAY_BUFFER && message.constructor === ArrayBuffer) {
message = new Uint8Array(message);
} else if (!Array.isArray(message)) {
if (!ARRAY_BUFFER || !ArrayBuffer.isView(message)) {
throw ERROR;
}
}
} else {
throw ERROR;
}
notString = true;
}
var code, index = 0, i, length = message.length, blocks = this.blocks;
var buffer8 = this.buffer8;
while (index < length) {
if (this.hashed) {
this.hashed = false;
blocks[0] = blocks[16];
blocks[16] = blocks[1] = blocks[2] = blocks[3] =
blocks[4] = blocks[5] = blocks[6] = blocks[7] =
blocks[8] = blocks[9] = blocks[10] = blocks[11] =
blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
}
if (notString) {
if (ARRAY_BUFFER) {
for (i = this.start; index < length && i < 64; ++index) {
buffer8[i++] = message[index];
}
} else {
for (i = this.start; index < length && i < 64; ++index) {
blocks[i >> 2] |= message[index] << SHIFT[i++ & 3];
}
}
} else {
if (ARRAY_BUFFER) {
for (i = this.start; index < length && i < 64; ++index) {
code = message.charCodeAt(index);
if (code < 0x80) {
buffer8[i++] = code;
} else if (code < 0x800) {
buffer8[i++] = 0xc0 | (code >> 6);
buffer8[i++] = 0x80 | (code & 0x3f);
} else if (code < 0xd800 || code >= 0xe000) {
buffer8[i++] = 0xe0 | (code >> 12);
buffer8[i++] = 0x80 | ((code >> 6) & 0x3f);
buffer8[i++] = 0x80 | (code & 0x3f);
} else {
code = 0x10000 + (((code & 0x3ff) << 10) | (message.charCodeAt(++index) & 0x3ff));
buffer8[i++] = 0xf0 | (code >> 18);
buffer8[i++] = 0x80 | ((code >> 12) & 0x3f);
buffer8[i++] = 0x80 | ((code >> 6) & 0x3f);
buffer8[i++] = 0x80 | (code & 0x3f);
}
}
} else {
for (i = this.start; index < length && i < 64; ++index) {
code = message.charCodeAt(index);
if (code < 0x80) {
blocks[i >> 2] |= code << SHIFT[i++ & 3];
} else if (code < 0x800) {
blocks[i >> 2] |= (0xc0 | (code >> 6)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
} else if (code < 0xd800 || code >= 0xe000) {
blocks[i >> 2] |= (0xe0 | (code >> 12)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
} else {
code = 0x10000 + (((code & 0x3ff) << 10) | (message.charCodeAt(++index) & 0x3ff));
blocks[i >> 2] |= (0xf0 | (code >> 18)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 12) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | ((code >> 6) & 0x3f)) << SHIFT[i++ & 3];
blocks[i >> 2] |= (0x80 | (code & 0x3f)) << SHIFT[i++ & 3];
}
}
}
}
this.lastByteIndex = i;
this.bytes += i - this.start;
if (i >= 64) {
this.start = i - 64;
this.hash();
this.hashed = true;
} else {
this.start = i;
}
}
if (this.bytes > 4294967295) {
this.hBytes += this.bytes / 4294967296 << 0;
this.bytes = this.bytes % 4294967296;
}
return this;
};
Md5.prototype.finalize = function () {
if (this.finalized) {
return;
}
this.finalized = true;
var blocks = this.blocks, i = this.lastByteIndex;
blocks[i >> 2] |= EXTRA[i & 3];
if (i >= 56) {
if (!this.hashed) {
this.hash();
}
blocks[0] = blocks[16];
blocks[16] = blocks[1] = blocks[2] = blocks[3] =
blocks[4] = blocks[5] = blocks[6] = blocks[7] =
blocks[8] = blocks[9] = blocks[10] = blocks[11] =
blocks[12] = blocks[13] = blocks[14] = blocks[15] = 0;
}
blocks[14] = this.bytes << 3;
blocks[15] = this.hBytes << 3 | this.bytes >>> 29;
this.hash();
};
Md5.prototype.hash = function () {
var a, b, c, d, bc, da, blocks = this.blocks;
if (this.first) {
a = blocks[0] - 680876937;
a = (a << 7 | a >>> 25) - 271733879 << 0;
d = (-1732584194 ^ a & 2004318071) + blocks[1] - 117830708;
d = (d << 12 | d >>> 20) + a << 0;
c = (-271733879 ^ (d & (a ^ -271733879))) + blocks[2] - 1126478375;
c = (c << 17 | c >>> 15) + d << 0;
b = (a ^ (c & (d ^ a))) + blocks[3] - 1316259209;
b = (b << 22 | b >>> 10) + c << 0;
} else {
a = this.h0;
b = this.h1;
c = this.h2;
d = this.h3;
a += (d ^ (b & (c ^ d))) + blocks[0] - 680876936;
a = (a << 7 | a >>> 25) + b << 0;
d += (c ^ (a & (b ^ c))) + blocks[1] - 389564586;
d = (d << 12 | d >>> 20) + a << 0;
c += (b ^ (d & (a ^ b))) + blocks[2] + 606105819;
c = (c << 17 | c >>> 15) + d << 0;
b += (a ^ (c & (d ^ a))) + blocks[3] - 1044525330;
b = (b << 22 | b >>> 10) + c << 0;
}
a += (d ^ (b & (c ^ d))) + blocks[4] - 176418897;
a = (a << 7 | a >>> 25) + b << 0;
d += (c ^ (a & (b ^ c))) + blocks[5] + 1200080426;
d = (d << 12 | d >>> 20) + a << 0;
c += (b ^ (d & (a ^ b))) + blocks[6] - 1473231341;
c = (c << 17 | c >>> 15) + d << 0;
b += (a ^ (c & (d ^ a))) + blocks[7] - 45705983;
b = (b << 22 | b >>> 10) + c << 0;
a += (d ^ (b & (c ^ d))) + blocks[8] + 1770035416;
a = (a << 7 | a >>> 25) + b << 0;
d += (c ^ (a & (b ^ c))) + blocks[9] - 1958414417;
d = (d << 12 | d >>> 20) + a << 0;
c += (b ^ (d & (a ^ b))) + blocks[10] - 42063;
c = (c << 17 | c >>> 15) + d << 0;
b += (a ^ (c & (d ^ a))) + blocks[11] - 1990404162;
b = (b << 22 | b >>> 10) + c << 0;
a += (d ^ (b & (c ^ d))) + blocks[12] + 1804603682;
a = (a << 7 | a >>> 25) + b << 0;
d += (c ^ (a & (b ^ c))) + blocks[13] - 40341101;
d = (d << 12 | d >>> 20) + a << 0;
c += (b ^ (d & (a ^ b))) + blocks[14] - 1502002290;
c = (c << 17 | c >>> 15) + d << 0;
b += (a ^ (c & (d ^ a))) + blocks[15] + 1236535329;
b = (b << 22 | b >>> 10) + c << 0;
a += (c ^ (d & (b ^ c))) + blocks[1] - 165796510;
a = (a << 5 | a >>> 27) + b << 0;
d += (b ^ (c & (a ^ b))) + blocks[6] - 1069501632;
d = (d << 9 | d >>> 23) + a << 0;
c += (a ^ (b & (d ^ a))) + blocks[11] + 643717713;
c = (c << 14 | c >>> 18) + d << 0;
b += (d ^ (a & (c ^ d))) + blocks[0] - 373897302;
b = (b << 20 | b >>> 12) + c << 0;
a += (c ^ (d & (b ^ c))) + blocks[5] - 701558691;
a = (a << 5 | a >>> 27) + b << 0;
d += (b ^ (c & (a ^ b))) + blocks[10] + 38016083;
d = (d << 9 | d >>> 23) + a << 0;
c += (a ^ (b & (d ^ a))) + blocks[15] - 660478335;
c = (c << 14 | c >>> 18) + d << 0;
b += (d ^ (a & (c ^ d))) + blocks[4] - 405537848;
b = (b << 20 | b >>> 12) + c << 0;
a += (c ^ (d & (b ^ c))) + blocks[9] + 568446438;
a = (a << 5 | a >>> 27) + b << 0;
d += (b ^ (c & (a ^ b))) + blocks[14] - 1019803690;
d = (d << 9 | d >>> 23) + a << 0;
c += (a ^ (b & (d ^ a))) + blocks[3] - 187363961;
c = (c << 14 | c >>> 18) + d << 0;
b += (d ^ (a & (c ^ d))) + blocks[8] + 1163531501;
b = (b << 20 | b >>> 12) + c << 0;
a += (c ^ (d & (b ^ c))) + blocks[13] - 1444681467;
a = (a << 5 | a >>> 27) + b << 0;
d += (b ^ (c & (a ^ b))) + blocks[2] - 51403784;
d = (d << 9 | d >>> 23) + a << 0;
c += (a ^ (b & (d ^ a))) + blocks[7] + 1735328473;
c = (c << 14 | c >>> 18) + d << 0;
b += (d ^ (a & (c ^ d))) + blocks[12] - 1926607734;
b = (b << 20 | b >>> 12) + c << 0;
bc = b ^ c;
a += (bc ^ d) + blocks[5] - 378558;
a = (a << 4 | a >>> 28) + b << 0;
d += (bc ^ a) + blocks[8] - 2022574463;
d = (d << 11 | d >>> 21) + a << 0;
da = d ^ a;
c += (da ^ b) + blocks[11] + 1839030562;
c = (c << 16 | c >>> 16) + d << 0;
b += (da ^ c) + blocks[14] - 35309556;
b = (b << 23 | b >>> 9) + c << 0;
bc = b ^ c;
a += (bc ^ d) + blocks[1] - 1530992060;
a = (a << 4 | a >>> 28) + b << 0;
d += (bc ^ a) + blocks[4] + 1272893353;
d = (d << 11 | d >>> 21) + a << 0;
da = d ^ a;
c += (da ^ b) + blocks[7] - 155497632;
c = (c << 16 | c >>> 16) + d << 0;
b += (da ^ c) + blocks[10] - 1094730640;
b = (b << 23 | b >>> 9) + c << 0;
bc = b ^ c;
a += (bc ^ d) + blocks[13] + 681279174;
a = (a << 4 | a >>> 28) + b << 0;
d += (bc ^ a) + blocks[0] - 358537222;
d = (d << 11 | d >>> 21) + a << 0;
da = d ^ a;
c += (da ^ b) + blocks[3] - 722521979;
c = (c << 16 | c >>> 16) + d << 0;
b += (da ^ c) + blocks[6] + 76029189;
b = (b << 23 | b >>> 9) + c << 0;
bc = b ^ c;
a += (bc ^ d) + blocks[9] - 640364487;
a = (a << 4 | a >>> 28) + b << 0;
d += (bc ^ a) + blocks[12] - 421815835;
d = (d << 11 | d >>> 21) + a << 0;
da = d ^ a;
c += (da ^ b) + blocks[15] + 530742520;
c = (c << 16 | c >>> 16) + d << 0;
b += (da ^ c) + blocks[2] - 995338651;
b = (b << 23 | b >>> 9) + c << 0;
a += (c ^ (b | ~d)) + blocks[0] - 198630844;
a = (a << 6 | a >>> 26) + b << 0;
d += (b ^ (a | ~c)) + blocks[7] + 1126891415;
d = (d << 10 | d >>> 22) + a << 0;
c += (a ^ (d | ~b)) + blocks[14] - 1416354905;
c = (c << 15 | c >>> 17) + d << 0;
b += (d ^ (c | ~a)) + blocks[5] - 57434055;
b = (b << 21 | b >>> 11) + c << 0;
a += (c ^ (b | ~d)) + blocks[12] + 1700485571;
a = (a << 6 | a >>> 26) + b << 0;
d += (b ^ (a | ~c)) + blocks[3] - 1894986606;
d = (d << 10 | d >>> 22) + a << 0;
c += (a ^ (d | ~b)) + blocks[10] - 1051523;
c = (c << 15 | c >>> 17) + d << 0;
b += (d ^ (c | ~a)) + blocks[1] - 2054922799;
b = (b << 21 | b >>> 11) + c << 0;
a += (c ^ (b | ~d)) + blocks[8] + 1873313359;
a = (a << 6 | a >>> 26) + b << 0;
d += (b ^ (a | ~c)) + blocks[15] - 30611744;
d = (d << 10 | d >>> 22) + a << 0;
c += (a ^ (d | ~b)) + blocks[6] - 1560198380;
c = (c << 15 | c >>> 17) + d << 0;
b += (d ^ (c | ~a)) + blocks[13] + 1309151649;
b = (b << 21 | b >>> 11) + c << 0;
a += (c ^ (b | ~d)) + blocks[4] - 145523070;
a = (a << 6 | a >>> 26) + b << 0;
d += (b ^ (a | ~c)) + blocks[11] - 1120210379;
d = (d << 10 | d >>> 22) + a << 0;
c += (a ^ (d | ~b)) + blocks[2] + 718787259;
c = (c << 15 | c >>> 17) + d << 0;
b += (d ^ (c | ~a)) + blocks[9] - 343485551;
b = (b << 21 | b >>> 11) + c << 0;
if (this.first) {
this.h0 = a + 1732584193 << 0;
this.h1 = b - 271733879 << 0;
this.h2 = c - 1732584194 << 0;
this.h3 = d + 271733878 << 0;
this.first = false;
} else {
this.h0 = this.h0 + a << 0;
this.h1 = this.h1 + b << 0;
this.h2 = this.h2 + c << 0;
this.h3 = this.h3 + d << 0;
}
};
/**
* @method hex
* @memberof Md5
* @instance
* @description Output hash as hex string
* @returns {String} Hex string
* @see {@link md5.hex}
* @example
* hash.hex();
*/
Md5.prototype.hex = function () {
this.finalize();
var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3;
return HEX_CHARS[(h0 >> 4) & 0x0F] + HEX_CHARS[h0 & 0x0F] +
HEX_CHARS[(h0 >> 12) & 0x0F] + HEX_CHARS[(h0 >> 8) & 0x0F] +
HEX_CHARS[(h0 >> 20) & 0x0F] + HEX_CHARS[(h0 >> 16) & 0x0F] +
HEX_CHARS[(h0 >> 28) & 0x0F] + HEX_CHARS[(h0 >> 24) & 0x0F] +
HEX_CHARS[(h1 >> 4) & 0x0F] + HEX_CHARS[h1 & 0x0F] +
HEX_CHARS[(h1 >> 12) & 0x0F] + HEX_CHARS[(h1 >> 8) & 0x0F] +
HEX_CHARS[(h1 >> 20) & 0x0F] + HEX_CHARS[(h1 >> 16) & 0x0F] +
HEX_CHARS[(h1 >> 28) & 0x0F] + HEX_CHARS[(h1 >> 24) & 0x0F] +
HEX_CHARS[(h2 >> 4) & 0x0F] + HEX_CHARS[h2 & 0x0F] +
HEX_CHARS[(h2 >> 12) & 0x0F] + HEX_CHARS[(h2 >> 8) & 0x0F] +
HEX_CHARS[(h2 >> 20) & 0x0F] + HEX_CHARS[(h2 >> 16) & 0x0F] +
HEX_CHARS[(h2 >> 28) & 0x0F] + HEX_CHARS[(h2 >> 24) & 0x0F] +
HEX_CHARS[(h3 >> 4) & 0x0F] + HEX_CHARS[h3 & 0x0F] +
HEX_CHARS[(h3 >> 12) & 0x0F] + HEX_CHARS[(h3 >> 8) & 0x0F] +
HEX_CHARS[(h3 >> 20) & 0x0F] + HEX_CHARS[(h3 >> 16) & 0x0F] +
HEX_CHARS[(h3 >> 28) & 0x0F] + HEX_CHARS[(h3 >> 24) & 0x0F];
};
/**
* @method toString
* @memberof Md5
* @instance
* @description Output hash as hex string
* @returns {String} Hex string
* @see {@link md5.hex}
* @example
* hash.toString();
*/
Md5.prototype.toString = Md5.prototype.hex;
/**
* @method digest
* @memberof Md5
* @instance
* @description Output hash as bytes array
* @returns {Array} Bytes array
* @see {@link md5.digest}
* @example
* hash.digest();
*/
Md5.prototype.digest = function () {
this.finalize();
var h0 = this.h0, h1 = this.h1, h2 = this.h2, h3 = this.h3;
return [
h0 & 0xFF, (h0 >> 8) & 0xFF, (h0 >> 16) & 0xFF, (h0 >> 24) & 0xFF,
h1 & 0xFF, (h1 >> 8) & 0xFF, (h1 >> 16) & 0xFF, (h1 >> 24) & 0xFF,
h2 & 0xFF, (h2 >> 8) & 0xFF, (h2 >> 16) & 0xFF, (h2 >> 24) & 0xFF,
h3 & 0xFF, (h3 >> 8) & 0xFF, (h3 >> 16) & 0xFF, (h3 >> 24) & 0xFF
];
};
/**
* @method array
* @memberof Md5
* @instance
* @description Output hash as bytes array
* @returns {Array} Bytes array
* @see {@link md5.array}
* @example
* hash.array();
*/
Md5.prototype.array = Md5.prototype.digest;
/**
* @method arrayBuffer
* @memberof Md5
* @instance
* @description Output hash as ArrayBuffer
* @returns {ArrayBuffer} ArrayBuffer
* @see {@link md5.arrayBuffer}
* @example
* hash.arrayBuffer();
*/
Md5.prototype.arrayBuffer = function () {
this.finalize();
var buffer = new ArrayBuffer(16);
var blocks = new Uint32Array(buffer);
blocks[0] = this.h0;
blocks[1] = this.h1;
blocks[2] = this.h2;
blocks[3] = this.h3;
return buffer;
};
/**
* @method buffer
* @deprecated This maybe confuse with Buffer in node.js. Please use arrayBuffer instead.
* @memberof Md5
* @instance
* @description Output hash as ArrayBuffer
* @returns {ArrayBuffer} ArrayBuffer
* @see {@link md5.buffer}
* @example
* hash.buffer();
*/
Md5.prototype.buffer = Md5.prototype.arrayBuffer;
/**
* @method base64
* @memberof Md5
* @instance
* @description Output hash as base64 string
* @returns {String} base64 string
* @see {@link md5.base64}
* @example
* hash.base64();
*/
Md5.prototype.base64 = function () {
var v1, v2, v3, base64Str = '', bytes = this.array();
for (var i = 0; i < 15;) {
v1 = bytes[i++];
v2 = bytes[i++];
v3 = bytes[i++];
base64Str += BASE64_ENCODE_CHAR[v1 >>> 2] +
BASE64_ENCODE_CHAR[(v1 << 4 | v2 >>> 4) & 63] +
BASE64_ENCODE_CHAR[(v2 << 2 | v3 >>> 6) & 63] +
BASE64_ENCODE_CHAR[v3 & 63];
}
v1 = bytes[i];
base64Str += BASE64_ENCODE_CHAR[v1 >>> 2] +
BASE64_ENCODE_CHAR[(v1 << 4) & 63] +
'==';
return base64Str;
};
var exports = createMethod();
if (COMMON_JS) {
module.exports = exports;
} else {
/**
* @method md5
* @description Md5 hash function, export to global in browsers.
* @param {String|Array|Uint8Array|ArrayBuffer} message message to hash
* @returns {String} md5 hashes
* @example
* md5(''); // d41d8cd98f00b204e9800998ecf8427e
* md5('The quick brown fox jumps over the lazy dog'); // 9e107d9d372bb6826bd81d3542a419d6
* md5('The quick brown fox jumps over the lazy dog.'); // e4d909c290d0fb1ca068ffaddf22cbd0
*
* // It also supports UTF-8 encoding
* md5('中文'); // a7bac2239fcdcb3a067903d8077c4a07
*
* // It also supports byte `Array`, `Uint8Array`, `ArrayBuffer`
* md5([]); // d41d8cd98f00b204e9800998ecf8427e
* md5(new Uint8Array([])); // d41d8cd98f00b204e9800998ecf8427e
*/
root.md5 = exports;
if (AMD) {
define(function () {
return exports;
});
}
}
})();
总结
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