【黑马架构师】Java架构师实战训练营

download:【黑马架构师】Java架构师实战训练营

var MD5 = function (string) {

    
    function RotateLeft(lValue, iShiftBits) {  
        return (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)<>>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