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小程序字符串md5加密+小写转大写+Base64转码解码

小程序字符串md5加密+小写转大写+Base64转码解码

作者: Stonesy | 来源:发表于2020-10-12 21:04 被阅读0次
    //在utils创建一个md5.js
    var rotateLeft = function(lValue, iShiftBits) {
        return(lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
    }
    
    var addUnsigned = function(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);
        }
    }
    
    var F = function(x, y, z) {
        return(x & y) | ((~x) & z);
    }
    
    var G = function(x, y, z) {
        return(x & z) | (y & (~z));
    }
    
    var H = function(x, y, z) {
        return(x ^ y ^ z);
    }
    
    var I = function(x, y, z) {
        return(y ^ (x | (~z)));
    }
    
    var FF = function(a, b, c, d, x, s, ac) {
        a = addUnsigned(a, addUnsigned(addUnsigned(F(b, c, d), x), ac));
        return addUnsigned(rotateLeft(a, s), b);
    };
    
    var GG = function(a, b, c, d, x, s, ac) {
        a = addUnsigned(a, addUnsigned(addUnsigned(G(b, c, d), x), ac));
        return addUnsigned(rotateLeft(a, s), b);
    };
    
    var HH = function(a, b, c, d, x, s, ac) {
        a = addUnsigned(a, addUnsigned(addUnsigned(H(b, c, d), x), ac));
        return addUnsigned(rotateLeft(a, s), b);
    };
    
    var II = function(a, b, c, d, x, s, ac) {
        a = addUnsigned(a, addUnsigned(addUnsigned(I(b, c, d), x), ac));
        return addUnsigned(rotateLeft(a, s), b);
    };
    
    var convertToWordArray = function(string) {
        var lWordCount;
        var lMessageLength = string.length;
        var lNumberOfWordsTempOne = lMessageLength + 8;
        var lNumberOfWordsTempTwo = (lNumberOfWordsTempOne - (lNumberOfWordsTempOne % 64)) / 64;
        var lNumberOfWords = (lNumberOfWordsTempTwo + 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;
    };
    
    var wordToHex = function(lValue) {
        var WordToHexValue = "",
            WordToHexValueTemp = "",
            lByte, lCount;
        for(lCount = 0; lCount <= 3; lCount++) {
            lByte = (lValue >>> (lCount * 8)) & 255;
            WordToHexValueTemp = "0" + lByte.toString(16);
            WordToHexValue = WordToHexValue + WordToHexValueTemp.substr(WordToHexValueTemp.length - 2, 2);
        }
        return WordToHexValue;
    };
    
    var uTF8Encode = function(string) {
        string = string.replace(/\x0d\x0a/g, "\x0a");
        var output = "";
        for(var n = 0; n < string.length; n++) {
            var c = string.charCodeAt(n);
            if(c < 128) {
                output += String.fromCharCode(c);
            } else if((c > 127) && (c < 2048)) {
                output += String.fromCharCode((c >> 6) | 192);
                output += String.fromCharCode((c & 63) | 128);
            } else {
                output += String.fromCharCode((c >> 12) | 224);
                output += String.fromCharCode(((c >> 6) & 63) | 128);
                output += String.fromCharCode((c & 63) | 128);
            }
        }
        return output;
    };
    
    function md5(string) {
        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 tempValue = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d);
        return tempValue.toLowerCase();
    }
    
    module.exports.md5 = md5
    
    //在需要使用的js里面导入md5.js
    import wxMd5 from '../../utils/md5.js';
    onLoad:function(){
    var key = wxMd5.md5(key).toLocaleUpperCase();//md5加密 同时toLocaleUpperCase小写转大写
    }
    
    //在需要使用的js里面写入
    var Base64 = {
    
      // private property
      _keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
    
      // public method for encoding
      , encode: function (input) {
        var output = "";
        var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
        var i = 0;
    
        input = Base64._utf8_encode(input);
    
        while (i < input.length) {
          chr1 = input.charCodeAt(i++);
          chr2 = input.charCodeAt(i++);
          chr3 = input.charCodeAt(i++);
    
          enc1 = chr1 >> 2;
          enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
          enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
          enc4 = chr3 & 63;
    
          if (isNaN(chr2)) {
            enc3 = enc4 = 64;
          }
          else if (isNaN(chr3)) {
            enc4 = 64;
          }
    
          output = output +
            this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
            this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
        } // Whend 
    
        return output;
      } // End Function encode 
    
    
      // public method for decoding
      , decode: function (input) {
        var output = "";
        var chr1, chr2, chr3;
        var enc1, enc2, enc3, enc4;
        var i = 0;
    
        input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
        while (i < input.length) {
          enc1 = this._keyStr.indexOf(input.charAt(i++));
          enc2 = this._keyStr.indexOf(input.charAt(i++));
          enc3 = this._keyStr.indexOf(input.charAt(i++));
          enc4 = this._keyStr.indexOf(input.charAt(i++));
    
          chr1 = (enc1 << 2) | (enc2 >> 4);
          chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
          chr3 = ((enc3 & 3) << 6) | enc4;
    
          output = output + String.fromCharCode(chr1);
    
          if (enc3 != 64) {
            output = output + String.fromCharCode(chr2);
          }
    
          if (enc4 != 64) {
            output = output + String.fromCharCode(chr3);
          }
    
        } // Whend 
    
        output = Base64._utf8_decode(output);
    
        return output;
      } // End Function decode 
    
    
      // private method for UTF-8 encoding
      , _utf8_encode: function (string) {
        var utftext = "";
        string = string.replace(/\r\n/g, "\n");
    
        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);
          }
    
        } // Next n 
    
        return utftext;
      } // End Function _utf8_encode 
    
      // private method for UTF-8 decoding
      , _utf8_decode: function (utftext) {
        var string = "";
        var i = 0;
        var c, c1, c2, c3;
        c = c1 = c2 = 0;
    
        while (i < utftext.length) {
          c = utftext.charCodeAt(i);
    
          if (c < 128) {
            string += String.fromCharCode(c);
            i++;
          }
          else if ((c > 191) && (c < 224)) {
            c2 = utftext.charCodeAt(i + 1);
            string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
            i += 2;
          }
          else {
            c2 = utftext.charCodeAt(i + 1);
            c3 = utftext.charCodeAt(i + 2);
            string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
            i += 3;
          }
    
        } // Whend 
    
        return string;
      } // End Function _utf8_decode 
    
    }
    
    
    onLoad:function(){
    var str = Base64.encode(base64_str);
    }
    
    

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          本文标题:小程序字符串md5加密+小写转大写+Base64转码解码

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