前端js实现字符串md5加密

超、凢脫俗 2022-11-17 14:40 931阅读 0赞

步骤：

1.  在项目中导入md5.js
2.  在需要的页面引入md5.js（定义一个变量接收md5.js中暴露出来的对象）
3.  页面内方法调用md5对象上面的md5方法加密字符串

md5.js下载： [GitHub][]

## 使用最新版md5.js（GitHub下载） ##

**md5.js:（源文件无改动）**

/* * JavaScript MD5 * https://github.com/blueimp/JavaScript-MD5 * * Copyright 2011, Sebastian Tschan * https://blueimp.net * * Licensed under the MIT license: * https://opensource.org/licenses/MIT * * Based on * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message * Digest Algorithm, as defined in RFC 1321. * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet * Distributed under the BSD License * See http://pajhome.org.uk/crypt/md5 for more info. */
    
    /* global define */
    
    /* eslint-disable strict */
    
    ;(function ($) { 
      'use strict'
    
      /** * Add integers, wrapping at 2^32. * This uses 16-bit operations internally to work around bugs in interpreters. * * @param {number} x First integer * @param {number} y Second integer * @returns {number} Sum */
      function safeAdd(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. * * @param {number} num 32-bit number * @param {number} cnt Rotation count * @returns {number} Rotated number */
      function bitRotateLeft(num, cnt) { 
        return (num << cnt) | (num >>> (32 - cnt))
      }
    
      /** * Basic operation the algorithm uses. * * @param {number} q q * @param {number} a a * @param {number} b b * @param {number} x x * @param {number} s s * @param {number} t t * @returns {number} Result */
      function md5cmn(q, a, b, x, s, t) { 
        return safeAdd(bitRotateLeft(safeAdd(safeAdd(a, q), safeAdd(x, t)), s), b)
      }
      /** * Basic operation the algorithm uses. * * @param {number} a a * @param {number} b b * @param {number} c c * @param {number} d d * @param {number} x x * @param {number} s s * @param {number} t t * @returns {number} Result */
      function md5ff(a, b, c, d, x, s, t) { 
        return md5cmn((b & c) | (~b & d), a, b, x, s, t)
      }
      /** * Basic operation the algorithm uses. * * @param {number} a a * @param {number} b b * @param {number} c c * @param {number} d d * @param {number} x x * @param {number} s s * @param {number} t t * @returns {number} Result */
      function md5gg(a, b, c, d, x, s, t) { 
        return md5cmn((b & d) | (c & ~d), a, b, x, s, t)
      }
      /** * Basic operation the algorithm uses. * * @param {number} a a * @param {number} b b * @param {number} c c * @param {number} d d * @param {number} x x * @param {number} s s * @param {number} t t * @returns {number} Result */
      function md5hh(a, b, c, d, x, s, t) { 
        return md5cmn(b ^ c ^ d, a, b, x, s, t)
      }
      /** * Basic operation the algorithm uses. * * @param {number} a a * @param {number} b b * @param {number} c c * @param {number} d d * @param {number} x x * @param {number} s s * @param {number} t t * @returns {number} Result */
      function md5ii(a, b, c, d, x, s, t) { 
        return md5cmn(c ^ (b | ~d), a, b, x, s, t)
      }
    
      /** * Calculate the MD5 of an array of little-endian words, and a bit length. * * @param {Array} x Array of little-endian words * @param {number} len Bit length * @returns {Array<number>} MD5 Array */
      function binlMD5(x, len) { 
        /* append padding */
        x[len >> 5] |= 0x80 << len % 32
        x[(((len + 64) >>> 9) << 4) + 14] = len
    
        var i
        var olda
        var oldb
        var oldc
        var oldd
        var a = 1732584193
        var b = -271733879
        var c = -1732584194
        var d = 271733878
    
        for (i = 0; i < x.length; i += 16) { 
          olda = a
          oldb = b
          oldc = c
          oldd = d
    
          a = md5ff(a, b, c, d, x[i], 7, -680876936)
          d = md5ff(d, a, b, c, x[i + 1], 12, -389564586)
          c = md5ff(c, d, a, b, x[i + 2], 17, 606105819)
          b = md5ff(b, c, d, a, x[i + 3], 22, -1044525330)
          a = md5ff(a, b, c, d, x[i + 4], 7, -176418897)
          d = md5ff(d, a, b, c, x[i + 5], 12, 1200080426)
          c = md5ff(c, d, a, b, x[i + 6], 17, -1473231341)
          b = md5ff(b, c, d, a, x[i + 7], 22, -45705983)
          a = md5ff(a, b, c, d, x[i + 8], 7, 1770035416)
          d = md5ff(d, a, b, c, x[i + 9], 12, -1958414417)
          c = md5ff(c, d, a, b, x[i + 10], 17, -42063)
          b = md5ff(b, c, d, a, x[i + 11], 22, -1990404162)
          a = md5ff(a, b, c, d, x[i + 12], 7, 1804603682)
          d = md5ff(d, a, b, c, x[i + 13], 12, -40341101)
          c = md5ff(c, d, a, b, x[i + 14], 17, -1502002290)
          b = md5ff(b, c, d, a, x[i + 15], 22, 1236535329)
    
          a = md5gg(a, b, c, d, x[i + 1], 5, -165796510)
          d = md5gg(d, a, b, c, x[i + 6], 9, -1069501632)
          c = md5gg(c, d, a, b, x[i + 11], 14, 643717713)
          b = md5gg(b, c, d, a, x[i], 20, -373897302)
          a = md5gg(a, b, c, d, x[i + 5], 5, -701558691)
          d = md5gg(d, a, b, c, x[i + 10], 9, 38016083)
          c = md5gg(c, d, a, b, x[i + 15], 14, -660478335)
          b = md5gg(b, c, d, a, x[i + 4], 20, -405537848)
          a = md5gg(a, b, c, d, x[i + 9], 5, 568446438)
          d = md5gg(d, a, b, c, x[i + 14], 9, -1019803690)
          c = md5gg(c, d, a, b, x[i + 3], 14, -187363961)
          b = md5gg(b, c, d, a, x[i + 8], 20, 1163531501)
          a = md5gg(a, b, c, d, x[i + 13], 5, -1444681467)
          d = md5gg(d, a, b, c, x[i + 2], 9, -51403784)
          c = md5gg(c, d, a, b, x[i + 7], 14, 1735328473)
          b = md5gg(b, c, d, a, x[i + 12], 20, -1926607734)
    
          a = md5hh(a, b, c, d, x[i + 5], 4, -378558)
          d = md5hh(d, a, b, c, x[i + 8], 11, -2022574463)
          c = md5hh(c, d, a, b, x[i + 11], 16, 1839030562)
          b = md5hh(b, c, d, a, x[i + 14], 23, -35309556)
          a = md5hh(a, b, c, d, x[i + 1], 4, -1530992060)
          d = md5hh(d, a, b, c, x[i + 4], 11, 1272893353)
          c = md5hh(c, d, a, b, x[i + 7], 16, -155497632)
          b = md5hh(b, c, d, a, x[i + 10], 23, -1094730640)
          a = md5hh(a, b, c, d, x[i + 13], 4, 681279174)
          d = md5hh(d, a, b, c, x[i], 11, -358537222)
          c = md5hh(c, d, a, b, x[i + 3], 16, -722521979)
          b = md5hh(b, c, d, a, x[i + 6], 23, 76029189)
          a = md5hh(a, b, c, d, x[i + 9], 4, -640364487)
          d = md5hh(d, a, b, c, x[i + 12], 11, -421815835)
          c = md5hh(c, d, a, b, x[i + 15], 16, 530742520)
          b = md5hh(b, c, d, a, x[i + 2], 23, -995338651)
    
          a = md5ii(a, b, c, d, x[i], 6, -198630844)
          d = md5ii(d, a, b, c, x[i + 7], 10, 1126891415)
          c = md5ii(c, d, a, b, x[i + 14], 15, -1416354905)
          b = md5ii(b, c, d, a, x[i + 5], 21, -57434055)
          a = md5ii(a, b, c, d, x[i + 12], 6, 1700485571)
          d = md5ii(d, a, b, c, x[i + 3], 10, -1894986606)
          c = md5ii(c, d, a, b, x[i + 10], 15, -1051523)
          b = md5ii(b, c, d, a, x[i + 1], 21, -2054922799)
          a = md5ii(a, b, c, d, x[i + 8], 6, 1873313359)
          d = md5ii(d, a, b, c, x[i + 15], 10, -30611744)
          c = md5ii(c, d, a, b, x[i + 6], 15, -1560198380)
          b = md5ii(b, c, d, a, x[i + 13], 21, 1309151649)
          a = md5ii(a, b, c, d, x[i + 4], 6, -145523070)
          d = md5ii(d, a, b, c, x[i + 11], 10, -1120210379)
          c = md5ii(c, d, a, b, x[i + 2], 15, 718787259)
          b = md5ii(b, c, d, a, x[i + 9], 21, -343485551)
    
          a = safeAdd(a, olda)
          b = safeAdd(b, oldb)
          c = safeAdd(c, oldc)
          d = safeAdd(d, oldd)
        }
        return [a, b, c, d]
      }
    
      /** * Convert an array of little-endian words to a string * * @param {Array<number>} input MD5 Array * @returns {string} MD5 string */
      function binl2rstr(input) { 
        var i
        var output = ''
        var length32 = input.length * 32
        for (i = 0; i < length32; i += 8) { 
          output += String.fromCharCode((input[i >> 5] >>> i % 32) & 0xff)
        }
        return output
      }
    
      /** * Convert a raw string to an array of little-endian words * Characters >255 have their high-byte silently ignored. * * @param {string} input Raw input string * @returns {Array<number>} Array of little-endian words */
      function rstr2binl(input) { 
        var i
        var output = []
        output[(input.length >> 2) - 1] = undefined
        for (i = 0; i < output.length; i += 1) { 
          output[i] = 0
        }
        var length8 = input.length * 8
        for (i = 0; i < length8; i += 8) { 
          output[i >> 5] |= (input.charCodeAt(i / 8) & 0xff) << i % 32
        }
        return output
      }
    
      /** * Calculate the MD5 of a raw string * * @param {string} s Input string * @returns {string} Raw MD5 string */
      function rstrMD5(s) { 
        return binl2rstr(binlMD5(rstr2binl(s), s.length * 8))
      }
    
      /** * Calculates the HMAC-MD5 of a key and some data (raw strings) * * @param {string} key HMAC key * @param {string} data Raw input string * @returns {string} Raw MD5 string */
      function rstrHMACMD5(key, data) { 
        var i
        var bkey = rstr2binl(key)
        var ipad = []
        var opad = []
        var hash
        ipad[15] = opad[15] = undefined
        if (bkey.length > 16) { 
          bkey = binlMD5(bkey, key.length * 8)
        }
        for (i = 0; i < 16; i += 1) { 
          ipad[i] = bkey[i] ^ 0x36363636
          opad[i] = bkey[i] ^ 0x5c5c5c5c
        }
        hash = binlMD5(ipad.concat(rstr2binl(data)), 512 + data.length * 8)
        return binl2rstr(binlMD5(opad.concat(hash), 512 + 128))
      }
    
      /** * Convert a raw string to a hex string * * @param {string} input Raw input string * @returns {string} Hex encoded string */
      function rstr2hex(input) { 
        var hexTab = '0123456789abcdef'
        var output = ''
        var x
        var i
        for (i = 0; i < input.length; i += 1) { 
          x = input.charCodeAt(i)
          output += hexTab.charAt((x >>> 4) & 0x0f) + hexTab.charAt(x & 0x0f)
        }
        return output
      }
    
      /** * Encode a string as UTF-8 * * @param {string} input Input string * @returns {string} UTF8 string */
      function str2rstrUTF8(input) { 
        return unescape(encodeURIComponent(input))
      }
    
      /** * Encodes input string as raw MD5 string * * @param {string} s Input string * @returns {string} Raw MD5 string */
      function rawMD5(s) { 
        return rstrMD5(str2rstrUTF8(s))
      }
      /** * Encodes input string as Hex encoded string * * @param {string} s Input string * @returns {string} Hex encoded string */
      function hexMD5(s) { 
        return rstr2hex(rawMD5(s))
      }
      /** * Calculates the raw HMAC-MD5 for the given key and data * * @param {string} k HMAC key * @param {string} d Input string * @returns {string} Raw MD5 string */
      function rawHMACMD5(k, d) { 
        return rstrHMACMD5(str2rstrUTF8(k), str2rstrUTF8(d))
      }
      /** * Calculates the Hex encoded HMAC-MD5 for the given key and data * * @param {string} k HMAC key * @param {string} d Input string * @returns {string} Raw MD5 string */
      function hexHMACMD5(k, d) { 
        return rstr2hex(rawHMACMD5(k, d))
      }
    
      /** * Calculates MD5 value for a given string. * If a key is provided, calculates the HMAC-MD5 value. * Returns a Hex encoded string unless the raw argument is given. * * @param {string} string Input string * @param {string} [key] HMAC key * @param {boolean} [raw] Raw output switch * @returns {string} MD5 output */
      function md5(string, key, raw) { 
        if (!key) { 
          if (!raw) { 
            return hexMD5(string)
          }
          return rawMD5(string)
        }
        if (!raw) { 
          return hexHMACMD5(key, string)
        }
        return rawHMACMD5(key, string)
      }
    
      if (typeof define === 'function' && define.amd) { 
        define(function () { 
          return md5
        })
      } else if (typeof module === 'object' && module.exports) { 
        module.exports = md5
      } else { 
        $.md5 = md5
      }
    })(this)
    //源文件最后返回值为md5方法，因此在页面文件中可以直接调用MD5()

**页面js**

// 引入MD5文件
    import MD5 from '../../util/md5.js'
    
    export default { 
    	methods: { 
    		goto(e) { 
      			let str = 'abcdefg'
      			//直接调用MD5
        		let sign = MD5(str)
      		}
    	}
    }

还可以封装一个md5函数：  
**md5.js:**

//md5.js
    var MD5 = function (string) { 
    
        function RotateLeft(lValue, iShiftBits) { 
            return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
        }
    
        function AddUnsigned(lX, lY) { 
            var lX4, lY4, lX8, lY8, lResult;
            lX8 = (lX & 0x80000000);
            lY8 = (lY & 0x80000000);
            lX4 = (lX & 0x40000000);
            lY4 = (lY & 0x40000000);
            lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
            if (lX4 & lY4) { 
                return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
            }
            if (lX4 | lY4) { 
                if (lResult & 0x40000000) { 
                    return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
                } else { 
                    return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
                }
            } else { 
                return (lResult ^ lX8 ^ lY8);
            }
        }
    
        function F(x, y, z) {  return (x & y) | ((~x) & z); }
        function G(x, y, z) {  return (x & z) | (y & (~z)); }
        function H(x, y, z) {  return (x ^ y ^ z); }
        function I(x, y, z) {  return (y ^ (x | (~z))); }
    
        function FF(a, b, c, d, x, s, ac) { 
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        };
    
        function GG(a, b, c, d, x, s, ac) { 
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        };
    
        function HH(a, b, c, d, x, s, ac) { 
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        };
    
        function II(a, b, c, d, x, s, ac) { 
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        };
    
        function ConvertToWordArray(string) { 
            var lWordCount;
            var lMessageLength = string.length;
            var lNumberOfWords_temp1 = lMessageLength + 8;
            var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - (lNumberOfWords_temp1 % 64)) / 64;
            var lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16;
            var lWordArray = Array(lNumberOfWords - 1);
            var lBytePosition = 0;
            var lByteCount = 0;
            while (lByteCount < lMessageLength) { 
                lWordCount = (lByteCount - (lByteCount % 4)) / 4;
                lBytePosition = (lByteCount % 4) * 8;
                lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));
                lByteCount++;
            }
            lWordCount = (lByteCount - (lByteCount % 4)) / 4;
            lBytePosition = (lByteCount % 4) * 8;
            lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);
            lWordArray[lNumberOfWords - 2] = lMessageLength << 3;
            lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;
            return lWordArray;
        };
    
        function WordToHex(lValue) { 
            var WordToHexValue = "", WordToHexValue_temp = "", lByte, lCount;
            for (lCount = 0; lCount <= 3; lCount++) { 
                lByte = (lValue >>> (lCount * 8)) & 255;
                WordToHexValue_temp = "0" + lByte.toString(16);
                WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length - 2, 2);
            }
            return WordToHexValue;
        };
    
        function Utf8Encode(string) { 
            string = string.replace(/\r\n/g, "\n");
            var utftext = "";
    
            for (var n = 0; n < string.length; n++) { 
    
                var c = string.charCodeAt(n);
    
                if (c < 128) { 
                    utftext += String.fromCharCode(c);
                }
                else if ((c > 127) && (c < 2048)) { 
                    utftext += String.fromCharCode((c >> 6) | 192);
                    utftext += String.fromCharCode((c & 63) | 128);
                }
                else { 
                    utftext += String.fromCharCode((c >> 12) | 224);
                    utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                    utftext += String.fromCharCode((c & 63) | 128);
                }
    
            }
    
            return utftext;
        };
    
        var x = Array();
        var k, AA, BB, CC, DD, a, b, c, d;
        var S11 = 7, S12 = 12, S13 = 17, S14 = 22;
        var S21 = 5, S22 = 9, S23 = 14, S24 = 20;
        var S31 = 4, S32 = 11, S33 = 16, S34 = 23;
        var S41 = 6, S42 = 10, S43 = 15, S44 = 21;
    
        string = Utf8Encode(string);
    
        x = ConvertToWordArray(string);
    
        a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;
    
        for (k = 0; k < x.length; k += 16) { 
            AA = a; BB = b; CC = c; DD = d;
            a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478);
            d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756);
            c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB);
            b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE);
            a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF);
            d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A);
            c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613);
            b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501);
            a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8);
            d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF);
            c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1);
            b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE);
            a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122);
            d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193);
            c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E);
            b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821);
            a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562);
            d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340);
            c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51);
            b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA);
            a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D);
            d = GG(d, a, b, c, x[k + 10], S22, 0x2441453);
            c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681);
            b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8);
            a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6);
            d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6);
            c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87);
            b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED);
            a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905);
            d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8);
            c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9);
            b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A);
            a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942);
            d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681);
            c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122);
            b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C);
            a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44);
            d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9);
            c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60);
            b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70);
            a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6);
            d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA);
            c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085);
            b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05);
            a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039);
            d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5);
            c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8);
            b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665);
            a = II(a, b, c, d, x[k + 0], S41, 0xF4292244);
            d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97);
            c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7);
            b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039);
            a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3);
            d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92);
            c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D);
            b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1);
            a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F);
            d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0);
            c = II(c, d, a, b, x[k + 6], S43, 0xA3014314);
            b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1);
            a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82);
            d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235);
            c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);
            b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391);
            a = AddUnsigned(a, AA);
            b = AddUnsigned(b, BB);
            c = AddUnsigned(c, CC);
            d = AddUnsigned(d, DD);
        }
    
        var temp = WordToHex(a) + WordToHex(b) + WordToHex(c) + WordToHex(d);
    
        return temp.toLowerCase();
    }
    
    module.exports = { 
        MD5: MD5
    }

**页面js:**

// 引入MD5文件
    import MD5 from '../../util/md5.js'
    
    export default { 
    	methods: { 
    		goto(e) { 
      			let str = 'abcdefg'
      			//调用MD5对象上的MD5方法对str进行加密
           	    let sign = MD5.MD5(str)
      		}
    	}
    }

[GitHub]: https://github.com/blueimp/JavaScript-MD5