ddes.js

/**
 * DES加密/解密
 * @Copyright Copyright (c) 2006
 * @author Guapo
 * @see DESCore
 */

/*
* encrypt the string to string made up of hex
* return the encrypted string
*/
function strEnc(data,firstKey,secondKey,thirdKey){

    var leng = data.length;
    var encData = "";
    var firstKeyBt,secondKeyBt,thirdKeyBt,firstLength,secondLength,thirdLength;
    if(firstKey != null && firstKey != ""){
        firstKeyBt = getKeyBytes(firstKey);
        firstLength = firstKeyBt.length;
    }
    if(secondKey != null && secondKey != ""){
        secondKeyBt = getKeyBytes(secondKey);
        secondLength = secondKeyBt.length;
    }
    if(thirdKey != null && thirdKey != ""){
        thirdKeyBt = getKeyBytes(thirdKey);
        thirdLength = thirdKeyBt.length;
    }

    if(leng > 0){
        if(leng < 4){
            var bt = strToBt(data);
            var encByte ;
            if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){
                var tempBt;
                var x,y,z;
                tempBt = bt;
                for(x = 0;x < firstLength ;x ++){
                    tempBt = enc(tempBt,firstKeyBt[x]);
                }
                for(y = 0;y < secondLength ;y ++){
                    tempBt = enc(tempBt,secondKeyBt[y]);
                }
                for(z = 0;z < thirdLength ;z ++){
                    tempBt = enc(tempBt,thirdKeyBt[z]);
                }
                encByte = tempBt;
            }else{
                if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){
                    var tempBt;
                    var x,y;
                    tempBt = bt;
                    for(x = 0;x < firstLength ;x ++){
                        tempBt = enc(tempBt,firstKeyBt[x]);
                    }
                    for(y = 0;y < secondLength ;y ++){
                        tempBt = enc(tempBt,secondKeyBt[y]);
                    }
                    encByte = tempBt;
                }else{
                    if(firstKey != null && firstKey !=""){
                        var tempBt;
                        var x = 0;
                        tempBt = bt;
                        for(x = 0;x < firstLength ;x ++){
                            tempBt = enc(tempBt,firstKeyBt[x]);
                        }
                        encByte = tempBt;
                    }
                }
            }
            encData = bt64ToHex(encByte);
        }else{
            var iterator = parseInt(leng/4);
            var remainder = leng%4;
            var i=0;
            for(i = 0;i < iterator;i++){
                var tempData = data.substring(i*4+0,i*4+4);
                var tempByte = strToBt(tempData);
                var encByte ;
                if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){
                    var tempBt;
                    var x,y,z;
                    tempBt = tempByte;
                    for(x = 0;x < firstLength ;x ++){
                        tempBt = enc(tempBt,firstKeyBt[x]);
                    }
                    for(y = 0;y < secondLength ;y ++){
                        tempBt = enc(tempBt,secondKeyBt[y]);
                    }
                    for(z = 0;z < thirdLength ;z ++){
                        tempBt = enc(tempBt,thirdKeyBt[z]);
                    }
                    encByte = tempBt;
                }else{
                    if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){
                        var tempBt;
                        var x,y;
                        tempBt = tempByte;
                        for(x = 0;x < firstLength ;x ++){
                            tempBt = enc(tempBt,firstKeyBt[x]);
                        }
                        for(y = 0;y < secondLength ;y ++){
                            tempBt = enc(tempBt,secondKeyBt[y]);
                        }
                        encByte = tempBt;
                    }else{
                        if(firstKey != null && firstKey !=""){
                            var tempBt;
                            var x;
                            tempBt = tempByte;
                            for(x = 0;x < firstLength ;x ++){
                                tempBt = enc(tempBt,firstKeyBt[x]);
                            }
                            encByte = tempBt;
                        }
                    }
                }
                encData += bt64ToHex(encByte);
            }
            if(remainder > 0){
                var remainderData = data.substring(iterator*4+0,leng);
                var tempByte = strToBt(remainderData);
                var encByte ;
                if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){
                    var tempBt;
                    var x,y,z;
                    tempBt = tempByte;
                    for(x = 0;x < firstLength ;x ++){
                        tempBt = enc(tempBt,firstKeyBt[x]);
                    }
                    for(y = 0;y < secondLength ;y ++){
                        tempBt = enc(tempBt,secondKeyBt[y]);
                    }
                    for(z = 0;z < thirdLength ;z ++){
                        tempBt = enc(tempBt,thirdKeyBt[z]);
                    }
                    encByte = tempBt;
                }else{
                    if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){
                        var tempBt;
                        var x,y;
                        tempBt = tempByte;
                        for(x = 0;x < firstLength ;x ++){
                            tempBt = enc(tempBt,firstKeyBt[x]);
                        }
                        for(y = 0;y < secondLength ;y ++){
                            tempBt = enc(tempBt,secondKeyBt[y]);
                        }
                        encByte = tempBt;
                    }else{
                        if(firstKey != null && firstKey !=""){
                            var tempBt;
                            var x;
                            tempBt = tempByte;
                            for(x = 0;x < firstLength ;x ++){
                                tempBt = enc(tempBt,firstKeyBt[x]);
                            }
                            encByte = tempBt;
                        }
                    }
                }
                encData += bt64ToHex(encByte);
            }
        }
    }
    return encData;
}

/*
* decrypt the encrypted string to the original string
*
* return  the original string
*/
function strDec(data,firstKey,secondKey,thirdKey){
    var leng = data.length;
    var decStr = "";
    var firstKeyBt,secondKeyBt,thirdKeyBt,firstLength,secondLength,thirdLength;
    if(firstKey != null && firstKey != ""){
        firstKeyBt = getKeyBytes(firstKey);
        firstLength = firstKeyBt.length;
    }
    if(secondKey != null && secondKey != ""){
        secondKeyBt = getKeyBytes(secondKey);
        secondLength = secondKeyBt.length;
    }
    if(thirdKey != null && thirdKey != ""){
        thirdKeyBt = getKeyBytes(thirdKey);
        thirdLength = thirdKeyBt.length;
    }

    var iterator = parseInt(leng/16);
    var i=0;
    for(i = 0;i < iterator;i++){
        var tempData = data.substring(i*16+0,i*16+16);
        var strByte = hexToBt64(tempData);
        var intByte = new Array(64);
        var j = 0;
        for(j = 0;j < 64; j++){
            intByte[j] = parseInt(strByte.substring(j,j+1));
        }
        var decByte;
        if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){
            var tempBt;
            var x,y,z;
            tempBt = intByte;
            for(x = thirdLength - 1;x >= 0;x --){
                tempBt = dec(tempBt,thirdKeyBt[x]);
            }
            for(y = secondLength - 1;y >= 0;y --){
                tempBt = dec(tempBt,secondKeyBt[y]);
            }
            for(z = firstLength - 1;z >= 0 ;z --){
                tempBt = dec(tempBt,firstKeyBt[z]);
            }
            decByte = tempBt;
        }else{
            if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){
                var tempBt;
                var x,y,z;
                tempBt = intByte;
                for(x = secondLength - 1;x >= 0 ;x --){
                    tempBt = dec(tempBt,secondKeyBt[x]);
                }
                for(y = firstLength - 1;y >= 0 ;y --){
                    tempBt = dec(tempBt,firstKeyBt[y]);
                }
                decByte = tempBt;
            }else{
                if(firstKey != null && firstKey !=""){
                    var tempBt;
                    var x,y,z;
                    tempBt = intByte;
                    for(x = firstLength - 1;x >= 0 ;x --){
                        tempBt = dec(tempBt,firstKeyBt[x]);
                    }
                    decByte = tempBt;
                }
            }
        }
        decStr += byteToString(decByte);
    }
    return decStr;
}
/*
* chang the string into the bit array
*
* return bit array(it's length % 64 = 0)
*/
function getKeyBytes(key){
    var keyBytes = new Array();
    var leng = key.length;
    var iterator = parseInt(leng/4);
    var remainder = leng%4;
    var i = 0;
    for(i = 0;i < iterator; i ++){
        keyBytes[i] = strToBt(key.substring(i*4+0,i*4+4));
    }
    if(remainder > 0){
        keyBytes[i] = strToBt(key.substring(i*4+0,leng));
    }
    return keyBytes;
}

/*
* chang the string(it's length <= 4) into the bit array
*
* return bit array(it's length = 64)
*/
function strToBt(str){
    var leng = str.length;
    var bt = new Array(2 << 5);
    if(leng < 4){
        var i=0,j=0,p=0,q=0;
        for(i = 0;i<leng;i++){
            var k = str.charCodeAt(i);
            for(j=0;j<16;j++){
                var pow=1,m=0;
                for(m=15;m>j;m--){
                    pow *= 2;
                }
                bt[16*i+j]=parseInt(k/pow)%2;
            }
        }
        for(p = leng;p<4;p++){
            var k = 0;
            for(q=0;q<16;q++){
                var pow=1,m=0;
                for(m=15;m>q;m--){
                    pow *= 2;
                }
                bt[16*p+q]=parseInt(k/pow)%2;
            }
        }
    }else{
        for(i = 0;i<4;i++){
            var k = str.charCodeAt(i);
            for(j=0;j<16;j++){
                var pow=1;
                for(m=15;m>j;m--){
                    pow *= 2;
                }
                bt[16*i+j]=parseInt(k/pow)%2;
            }
        }
    }
    return bt;
}

/*
* chang the bit(it's length = 4) into the hex
*
* return hex
*/
function bt4ToHex(binary) {
    var hex;
    switch (binary) {
        case "0000" : hex = "0"; break;
        case "0001" : hex = "1"; break;
        case "0010" : hex = "2"; break;
        case "0011" : hex = "3"; break;
        case "0100" : hex = "4"; break;
        case "0101" : hex = "5"; break;
        case "0110" : hex = "6"; break;
        case "0111" : hex = "7"; break;
        case "1000" : hex = "8"; break;
        case "1001" : hex = "9"; break;
        case "1010" : hex = "A"; break;
        case "1011" : hex = "B"; break;
        case "1100" : hex = "C"; break;
        case "1101" : hex = "D"; break;
        case "1110" : hex = "E"; break;
        case "1111" : hex = "F"; break;
    }
    return hex;
}

/*
* chang the hex into the bit(it's length = 4)
*
* return the bit(it's length = 4)
*/
function hexToBt4(hex) {
    var binary;
    switch (hex) {
        case "0" : binary = "0000"; break;
        case "1" : binary = "0001"; break;
        case "2" : binary = "0010"; break;
        case "3" : binary = "0011"; break;
        case "4" : binary = "0100"; break;
        case "5" : binary = "0101"; break;
        case "6" : binary = "0110"; break;
        case "7" : binary = "0111"; break;
        case "8" : binary = "1000"; break;
        case "9" : binary = "1001"; break;
        case "A" : binary = "1010"; break;
        case "B" : binary = "1011"; break;
        case "C" : binary = "1100"; break;
        case "D" : binary = "1101"; break;
        case "E" : binary = "1110"; break;
        case "F" : binary = "1111"; break;
    }
    return binary;
}

/*
* chang the bit(it's length = 64) into the string
*
* return string
*/
function byteToString(byteData){
    var str="";
    for(i = 0;i<4;i++){
        var count=0;
        for(j=0;j<16;j++){
            var pow=1;
            for(m=15;m>j;m--){
                pow*=2;
            }
            count+=byteData[16*i+j]*pow;
        }
        if(count != 0){
            str+=String.fromCharCode(count);
        }
    }
    return str;
}

function bt64ToHex(byteData){
    var hex = "";
    for(i = 0;i<16;i++){
        var bt = "";
        for(j=0;j<4;j++){
            bt += byteData[i*4+j];
        }
        hex+=bt4ToHex(bt);
    }
    return hex;
}

function hexToBt64(hex){
    var binary = "";
    for(i = 0;i<16;i++){
        binary+=hexToBt4(hex.substring(i,i+1));
    }
    return binary;
}

/*
* the 64 bit des core arithmetic
*/

function enc(dataByte,keyByte){
    var keys = generateKeys(keyByte);
    var ipByte   = initPermute(dataByte);
    var ipLeft   = new Array(32);
    var ipRight  = new Array(32);
    var tempLeft = new Array(32);
    var i = 0,j = 0,k = 0,m = 0, n = 0;
    for(k = 0;k < 32;k ++){
        ipLeft[k] = ipByte[k];
        ipRight[k] = ipByte[32+k];
    }
    for(i = 0;i < 16;i ++){
        for(j = 0;j < 32;j ++){
            tempLeft[j] = ipLeft[j];
            ipLeft[j] = ipRight[j];
        }
        var key = new Array(48);
        for(m = 0;m < 48;m ++){
            key[m] = keys[i][m];
        }
        var  tempRight = xor(pPermute(sBoxPermute(xor(expandPermute(ipRight),key))), tempLeft);
        for(n = 0;n < 32;n ++){
            ipRight[n] = tempRight[n];
        }

    }


    var finalData =new Array(64);
    for(i = 0;i < 32;i ++){
        finalData[i] = ipRight[i];
        finalData[32+i] = ipLeft[i];
    }
    return finallyPermute(finalData);
}

function dec(dataByte,keyByte){
    var keys = generateKeys(keyByte);
    var ipByte   = initPermute(dataByte);
    var ipLeft   = new Array(32);
    var ipRight  = new Array(32);
    var tempLeft = new Array(32);
    var i = 0,j = 0,k = 0,m = 0, n = 0;
    for(k = 0;k < 32;k ++){
        ipLeft[k] = ipByte[k];
        ipRight[k] = ipByte[32+k];
    }
    for(i = 15;i >= 0;i --){
        for(j = 0;j < 32;j ++){
            tempLeft[j] = ipLeft[j];
            ipLeft[j] = ipRight[j];
        }
        var key = new Array(48);
        for(m = 0;m < 48;m ++){
            key[m] = keys[i][m];
        }

        var  tempRight = xor(pPermute(sBoxPermute(xor(expandPermute(ipRight),key))), tempLeft);
        for(n = 0;n < 32;n ++){
            ipRight[n] = tempRight[n];
        }
    }


    var finalData =new Array(64);
    for(i = 0;i < 32;i ++){
        finalData[i] = ipRight[i];
        finalData[32+i] = ipLeft[i];
    }
    return finallyPermute(finalData);
}

function initPermute(originalData){
    var ipByte = new Array(64);
    for (i = 0, m = 1, n = 0; i < 4; i++, m += 2, n += 2) {
        for (j = 7, k = 0; j >= 0; j--, k++) {
            ipByte[i * 8 + k] = originalData[j * 8 + m];
            ipByte[i * 8 + k + 32] = originalData[j * 8 + n];
        }
    }
    return ipByte;
}

function expandPermute(rightData){
    var epByte = new Array(48);
    for (i = 0; i < 8; i++) {
        if (i == 0) {
            epByte[i * 6 + 0] = rightData[31];
        } else {
            epByte[i * 6 + 0] = rightData[i * 4 - 1];
        }
        epByte[i * 6 + 1] = rightData[i * 4 + 0];
        epByte[i * 6 + 2] = rightData[i * 4 + 1];
        epByte[i * 6 + 3] = rightData[i * 4 + 2];
        epByte[i * 6 + 4] = rightData[i * 4 + 3];
        if (i == 7) {
            epByte[i * 6 + 5] = rightData[0];
        } else {
            epByte[i * 6 + 5] = rightData[i * 4 + 4];
        }
    }
    return epByte;
}

function xor(byteOne,byteTwo){
    var xorByte = new Array(byteOne.length);
    for(i = 0;i < byteOne.length; i ++){
        xorByte[i] = byteOne[i] ^ byteTwo[i];
    }
    return xorByte;
}

function sBoxPermute(expandByte){

    var sBoxByte = new Array(32);
    var binary = "";
    var s1 = [
        [14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7],
        [0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8],
        [4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0],
        [15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 ]];

    /* Table - s2 */
    var s2 = [
        [15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10],
        [3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5],
        [0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15],
        [13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 ]];

    /* Table - s3 */
    var s3= [
        [10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8],
        [13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1],
        [13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7],
        [1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 ]];
    /* Table - s4 */
    var s4 = [
        [7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15],
        [13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9],
        [10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4],
        [3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 ]];

    /* Table - s5 */
    var s5 = [
        [2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9],
        [14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6],
        [4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14],
        [11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 ]];

    /* Table - s6 */
    var s6 = [
        [12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11],
        [10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8],
        [9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6],
        [4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 ]];

    /* Table - s7 */
    var s7 = [
        [4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1],
        [13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6],
        [1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2],
        [6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12]];

    /* Table - s8 */
    var s8 = [
        [13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7],
        [1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2],
        [7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8],
        [2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11]];

    for(m=0;m<8;m++){
        var i=0,j=0;
        i = expandByte[m*6+0]*2+expandByte[m*6+5];
        j = expandByte[m * 6 + 1] * 2 * 2 * 2
            + expandByte[m * 6 + 2] * 2* 2
            + expandByte[m * 6 + 3] * 2
            + expandByte[m * 6 + 4];
        switch (m) {
            case 0 :
                binary = getBoxBinary(s1[i][j]);
                break;
            case 1 :
                binary = getBoxBinary(s2[i][j]);
                break;
            case 2 :
                binary = getBoxBinary(s3[i][j]);
                break;
            case 3 :
                binary = getBoxBinary(s4[i][j]);
                break;
            case 4 :
                binary = getBoxBinary(s5[i][j]);
                break;
            case 5 :
                binary = getBoxBinary(s6[i][j]);
                break;
            case 6 :
                binary = getBoxBinary(s7[i][j]);
                break;
            case 7 :
                binary = getBoxBinary(s8[i][j]);
                break;
        }
        sBoxByte[m*4+0] = parseInt(binary.substring(0,1));
        sBoxByte[m*4+1] = parseInt(binary.substring(1,2));
        sBoxByte[m*4+2] = parseInt(binary.substring(2,3));
        sBoxByte[m*4+3] = parseInt(binary.substring(3,4));
    }
    return sBoxByte;
}

function pPermute(sBoxByte){
    var pBoxPermute = new Array(32);
    pBoxPermute[ 0] = sBoxByte[15];
    pBoxPermute[ 1] = sBoxByte[ 6];
    pBoxPermute[ 2] = sBoxByte[19];
    pBoxPermute[ 3] = sBoxByte[20];
    pBoxPermute[ 4] = sBoxByte[28];
    pBoxPermute[ 5] = sBoxByte[11];
    pBoxPermute[ 6] = sBoxByte[27];
    pBoxPermute[ 7] = sBoxByte[16];
    pBoxPermute[ 8] = sBoxByte[ 0];
    pBoxPermute[ 9] = sBoxByte[14];
    pBoxPermute[10] = sBoxByte[22];
    pBoxPermute[11] = sBoxByte[25];
    pBoxPermute[12] = sBoxByte[ 4];
    pBoxPermute[13] = sBoxByte[17];
    pBoxPermute[14] = sBoxByte[30];
    pBoxPermute[15] = sBoxByte[ 9];
    pBoxPermute[16] = sBoxByte[ 1];
    pBoxPermute[17] = sBoxByte[ 7];
    pBoxPermute[18] = sBoxByte[23];
    pBoxPermute[19] = sBoxByte[13];
    pBoxPermute[20] = sBoxByte[31];
    pBoxPermute[21] = sBoxByte[26];
    pBoxPermute[22] = sBoxByte[ 2];
    pBoxPermute[23] = sBoxByte[ 8];
    pBoxPermute[24] = sBoxByte[18];
    pBoxPermute[25] = sBoxByte[12];
    pBoxPermute[26] = sBoxByte[29];
    pBoxPermute[27] = sBoxByte[ 5];
    pBoxPermute[28] = sBoxByte[21];
    pBoxPermute[29] = sBoxByte[10];
    pBoxPermute[30] = sBoxByte[ 3];
    pBoxPermute[31] = sBoxByte[24];
    return pBoxPermute;
}

function finallyPermute(endByte){
    var fpByte = new Array(64);
    fpByte[ 0] = endByte[39];
    fpByte[ 1] = endByte[ 7];
    fpByte[ 2] = endByte[47];
    fpByte[ 3] = endByte[15];
    fpByte[ 4] = endByte[55];
    fpByte[ 5] = endByte[23];
    fpByte[ 6] = endByte[63];
    fpByte[ 7] = endByte[31];
    fpByte[ 8] = endByte[38];
    fpByte[ 9] = endByte[ 6];
    fpByte[10] = endByte[46];
    fpByte[11] = endByte[14];
    fpByte[12] = endByte[54];
    fpByte[13] = endByte[22];
    fpByte[14] = endByte[62];
    fpByte[15] = endByte[30];
    fpByte[16] = endByte[37];
    fpByte[17] = endByte[ 5];
    fpByte[18] = endByte[45];
    fpByte[19] = endByte[13];
    fpByte[20] = endByte[53];
    fpByte[21] = endByte[21];
    fpByte[22] = endByte[61];
    fpByte[23] = endByte[29];
    fpByte[24] = endByte[36];
    fpByte[25] = endByte[ 4];
    fpByte[26] = endByte[44];
    fpByte[27] = endByte[12];
    fpByte[28] = endByte[52];
    fpByte[29] = endByte[20];
    fpByte[30] = endByte[60];
    fpByte[31] = endByte[28];
    fpByte[32] = endByte[35];
    fpByte[33] = endByte[ 3];
    fpByte[34] = endByte[43];
    fpByte[35] = endByte[11];
    fpByte[36] = endByte[51];
    fpByte[37] = endByte[19];
    fpByte[38] = endByte[59];
    fpByte[39] = endByte[27];
    fpByte[40] = endByte[34];
    fpByte[41] = endByte[ 2];
    fpByte[42] = endByte[42];
    fpByte[43] = endByte[10];
    fpByte[44] = endByte[50];
    fpByte[45] = endByte[18];
    fpByte[46] = endByte[58];
    fpByte[47] = endByte[26];
    fpByte[48] = endByte[33];
    fpByte[49] = endByte[ 1];
    fpByte[50] = endByte[41];
    fpByte[51] = endByte[ 9];
    fpByte[52] = endByte[49];
    fpByte[53] = endByte[17];
    fpByte[54] = endByte[57];
    fpByte[55] = endByte[25];
    fpByte[56] = endByte[32];
    fpByte[57] = endByte[ 0];
    fpByte[58] = endByte[40];
    fpByte[59] = endByte[ 8];
    fpByte[60] = endByte[48];
    fpByte[61] = endByte[16];
    fpByte[62] = endByte[56];
    fpByte[63] = endByte[24];
    return fpByte;
}

function getBoxBinary(i) {
    var binary = "";
    switch (i) {
        case 0 :binary = "0000";break;
        case 1 :binary = "0001";break;
        case 2 :binary = "0010";break;
        case 3 :binary = "0011";break;
        case 4 :binary = "0100";break;
        case 5 :binary = "0101";break;
        case 6 :binary = "0110";break;
        case 7 :binary = "0111";break;
        case 8 :binary = "1000";break;
        case 9 :binary = "1001";break;
        case 10 :binary = "1010";break;
        case 11 :binary = "1011";break;
        case 12 :binary = "1100";break;
        case 13 :binary = "1101";break;
        case 14 :binary = "1110";break;
        case 15 :binary = "1111";break;
    }
    return binary;
}
/*
* generate 16 keys for xor
*
*/
function generateKeys(keyByte){
    var key   = new Array(56);
    var keys = new Array();

    keys[ 0] = new Array();
    keys[ 1] = new Array();
    keys[ 2] = new Array();
    keys[ 3] = new Array();
    keys[ 4] = new Array();
    keys[ 5] = new Array();
    keys[ 6] = new Array();
    keys[ 7] = new Array();
    keys[ 8] = new Array();
    keys[ 9] = new Array();
    keys[10] = new Array();
    keys[11] = new Array();
    keys[12] = new Array();
    keys[13] = new Array();
    keys[14] = new Array();
    keys[15] = new Array();
    var loop = [1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1];

    for(i=0;i<7;i++){
        for(j=0,k=7;j<8;j++,k--){
            key[i*8+j]=keyByte[8*k+i];
        }
    }

    var i = 0;
    for(i = 0;i < 16;i ++){
        var tempLeft=0;
        var tempRight=0;
        for(j = 0; j < loop[i];j ++){
            tempLeft = key[0];
            tempRight = key[28];
            for(k = 0;k < 27 ;k ++){
                key[k] = key[k+1];
                key[28+k] = key[29+k];
            }
            key[27]=tempLeft;
            key[55]=tempRight;
        }
        var tempKey = new Array(48);
        tempKey[ 0] = key[13];
        tempKey[ 1] = key[16];
        tempKey[ 2] = key[10];
        tempKey[ 3] = key[23];
        tempKey[ 4] = key[ 0];
        tempKey[ 5] = key[ 4];
        tempKey[ 6] = key[ 2];
        tempKey[ 7] = key[27];
        tempKey[ 8] = key[14];
        tempKey[ 9] = key[ 5];
        tempKey[10] = key[20];
        tempKey[11] = key[ 9];
        tempKey[12] = key[22];
        tempKey[13] = key[18];
        tempKey[14] = key[11];
        tempKey[15] = key[ 3];
        tempKey[16] = key[25];
        tempKey[17] = key[ 7];
        tempKey[18] = key[15];
        tempKey[19] = key[ 6];
        tempKey[20] = key[26];
        tempKey[21] = key[19];
        tempKey[22] = key[12];
        tempKey[23] = key[ 1];
        tempKey[24] = key[40];
        tempKey[25] = key[51];
        tempKey[26] = key[30];
        tempKey[27] = key[36];
        tempKey[28] = key[46];
        tempKey[29] = key[54];
        tempKey[30] = key[29];
        tempKey[31] = key[39];
        tempKey[32] = key[50];
        tempKey[33] = key[44];
        tempKey[34] = key[32];
        tempKey[35] = key[47];
        tempKey[36] = key[43];
        tempKey[37] = key[48];
        tempKey[38] = key[38];
        tempKey[39] = key[55];
        tempKey[40] = key[33];
        tempKey[41] = key[52];
        tempKey[42] = key[45];
        tempKey[43] = key[41];
        tempKey[44] = key[49];
        tempKey[45] = key[35];
        tempKey[46] = key[28];
        tempKey[47] = key[31];
        switch(i){
            case 0: for(m=0;m < 48 ;m++){ keys[ 0][m] = tempKey[m]; } break;
            case 1: for(m=0;m < 48 ;m++){ keys[ 1][m] = tempKey[m]; } break;
            case 2: for(m=0;m < 48 ;m++){ keys[ 2][m] = tempKey[m]; } break;
            case 3: for(m=0;m < 48 ;m++){ keys[ 3][m] = tempKey[m]; } break;
            case 4: for(m=0;m < 48 ;m++){ keys[ 4][m] = tempKey[m]; } break;
            case 5: for(m=0;m < 48 ;m++){ keys[ 5][m] = tempKey[m]; } break;
            case 6: for(m=0;m < 48 ;m++){ keys[ 6][m] = tempKey[m]; } break;
            case 7: for(m=0;m < 48 ;m++){ keys[ 7][m] = tempKey[m]; } break;
            case 8: for(m=0;m < 48 ;m++){ keys[ 8][m] = tempKey[m]; } break;
            case 9: for(m=0;m < 48 ;m++){ keys[ 9][m] = tempKey[m]; } break;
            case 10: for(m=0;m < 48 ;m++){ keys[10][m] = tempKey[m]; } break;
            case 11: for(m=0;m < 48 ;m++){ keys[11][m] = tempKey[m]; } break;
            case 12: for(m=0;m < 48 ;m++){ keys[12][m] = tempKey[m]; } break;
            case 13: for(m=0;m < 48 ;m++){ keys[13][m] = tempKey[m]; } break;
            case 14: for(m=0;m < 48 ;m++){ keys[14][m] = tempKey[m]; } break;
            case 15: for(m=0;m < 48 ;m++){ keys[15][m] = tempKey[m]; } break;
        }
    }
    return keys;
}
console.log(strEnc("17768610086", "crd6ku", "fz4yt1", "1wllu3"))