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import java.util.ArrayList;
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import java.util.List;
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/**
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* DES加密/解密
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*
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* @Copyright Copyright (c) 2015
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* @author liuyazhuang
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* @see DESCore
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*/
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public class Des {
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public Des() {
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}
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public static void main(String[] args) {
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Des desObj = new Des();
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String key1 = "1";
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String key2 = "2";
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String key3 = "3";
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String data = "admin";
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String str = desObj.strEnc(data, key1, key2, key3);
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System.out.println(str);
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String dec = desObj.strDec(str, key1, key2, key3);
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System.out.println(dec);
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}
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/**
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* DES加密/解密
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*
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* @Copyright Copyright (c) 2015
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* @author liuyazhuang
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* @see DESCore
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*/
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/*
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* encrypt the string to string made up of hex return the encrypted string
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*/
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public String strEnc(String data, String firstKey, String secondKey,
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String thirdKey) {
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int leng = data.length();
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String encData = "";
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List firstKeyBt = null, secondKeyBt = null, thirdKeyBt = null;
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int firstLength = 0, secondLength = 0, thirdLength = 0;
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if (firstKey != null && firstKey != "") {
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firstKeyBt = getKeyBytes(firstKey);
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firstLength = firstKeyBt.size();
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}
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if (secondKey != null && secondKey != "") {
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secondKeyBt = getKeyBytes(secondKey);
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secondLength = secondKeyBt.size();
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}
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if (thirdKey != null && thirdKey != "") {
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thirdKeyBt = getKeyBytes(thirdKey);
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thirdLength = thirdKeyBt.size();
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}
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if (leng > 0) {
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if (leng < 4) {
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int[] bt = strToBt(data);
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int[] encByte = null;
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if (firstKey != null && firstKey != "" && secondKey != null
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&& secondKey != "" && thirdKey != null
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&& thirdKey != "") {
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int[] tempBt;
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int x, y, z;
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tempBt = bt;
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for (x = 0; x < firstLength; x++) {
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tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
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}
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for (y = 0; y < secondLength; y++) {
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tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
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}
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for (z = 0; z < thirdLength; z++) {
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tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z));
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}
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encByte = tempBt;
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} else {
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if (firstKey != null && firstKey != "" && secondKey != null
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&& secondKey != "") {
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int[] tempBt;
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int x, y;
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tempBt = bt;
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for (x = 0; x < firstLength; x++) {
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tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
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}
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for (y = 0; y < secondLength; y++) {
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tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
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}
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encByte = tempBt;
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} else {
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if (firstKey != null && firstKey != "") {
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int[] tempBt;
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int x = 0;
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tempBt = bt;
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for (x = 0; x < firstLength; x++) {
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tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
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}
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encByte = tempBt;
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}
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}
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}
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encData = bt64ToHex(encByte);
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} else {
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int iterator = (leng / 4);
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int remainder = leng % 4;
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int i = 0;
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for (i = 0; i < iterator; i++) {
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String tempData = data.substring(i * 4 + 0, i * 4 + 4);
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int[] tempByte = strToBt(tempData);
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int[] encByte = null;
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if (firstKey != null && firstKey != "" && secondKey != null
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&& secondKey != "" && thirdKey != null
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&& thirdKey != "") {
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int[] tempBt;
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int x, y, z;
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tempBt = tempByte;
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for (x = 0; x < firstLength; x++) {
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tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
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}
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for (y = 0; y < secondLength; y++) {
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tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
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}
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for (z = 0; z < thirdLength; z++) {
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tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z));
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}
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encByte = tempBt;
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} else {
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if (firstKey != null && firstKey != ""
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&& secondKey != null && secondKey != "") {
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int[] tempBt;
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int x, y;
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tempBt = tempByte;
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for (x = 0; x < firstLength; x++) {
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tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
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}
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for (y = 0; y < secondLength; y++) {
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tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
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}
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encByte = tempBt;
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} else {
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if (firstKey != null && firstKey != "") {
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int[] tempBt;
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int x;
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tempBt = tempByte;
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for (x = 0; x < firstLength; x++) {
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tempBt = enc(tempBt, (int[]) firstKeyBt
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.get(x));
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}
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encByte = tempBt;
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}
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}
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}
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encData += bt64ToHex(encByte);
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}
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if (remainder > 0) {
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String remainderData = data.substring(iterator * 4 + 0,
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leng);
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int[] tempByte = strToBt(remainderData);
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int[] encByte = null;
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if (firstKey != null && firstKey != "" && secondKey != null
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&& secondKey != "" && thirdKey != null
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&& thirdKey != "") {
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int[] tempBt;
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int x, y, z;
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tempBt = tempByte;
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for (x = 0; x < firstLength; x++) {
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tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
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}
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for (y = 0; y < secondLength; y++) {
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tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
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}
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for (z = 0; z < thirdLength; z++) {
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tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z));
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}
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encByte = tempBt;
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} else {
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if (firstKey != null && firstKey != ""
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&& secondKey != null && secondKey != "") {
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int[] tempBt;
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int x, y;
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tempBt = tempByte;
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for (x = 0; x < firstLength; x++) {
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tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
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}
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for (y = 0; y < secondLength; y++) {
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tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
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}
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encByte = tempBt;
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} else {
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if (firstKey != null && firstKey != "") {
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int[] tempBt;
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int x;
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tempBt = tempByte;
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for (x = 0; x < firstLength; x++) {
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tempBt = enc(tempBt, (int[]) firstKeyBt
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.get(x));
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}
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encByte = tempBt;
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}
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}
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}
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encData += bt64ToHex(encByte);
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}
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}
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}
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return encData;
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}
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/*
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* decrypt the encrypted string to the original string
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* return the original string
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*/
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public String strDec(String data, String firstKey, String secondKey,
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String thirdKey) {
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int leng = data.length();
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String decStr = "";
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List firstKeyBt = null, secondKeyBt = null, thirdKeyBt = null;
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int firstLength = 0, secondLength = 0, thirdLength = 0;
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if (firstKey != null && firstKey != "") {
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firstKeyBt = getKeyBytes(firstKey);
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firstLength = firstKeyBt.size();
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}
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if (secondKey != null && secondKey != "") {
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secondKeyBt = getKeyBytes(secondKey);
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secondLength = secondKeyBt.size();
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}
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if (thirdKey != null && thirdKey != "") {
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thirdKeyBt = getKeyBytes(thirdKey);
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thirdLength = thirdKeyBt.size();
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}
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int iterator = leng / 16;
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int i = 0;
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for (i = 0; i < iterator; i++) {
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String tempData = data.substring(i * 16 + 0, i * 16 + 16);
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String strByte = hexToBt64(tempData);
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int[] intByte = new int[64];
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int j = 0;
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for (j = 0; j < 64; j++) {
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intByte[j] = Integer.parseInt(strByte.substring(j, j + 1));
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}
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int[] decByte = null;
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if (firstKey != null && firstKey != "" && secondKey != null
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&& secondKey != "" && thirdKey != null && thirdKey != "") {
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int[] tempBt;
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int x, y, z;
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tempBt = intByte;
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for (x = thirdLength - 1; x >= 0; x--) {
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tempBt = dec(tempBt, (int[]) thirdKeyBt.get(x));
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}
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for (y = secondLength - 1; y >= 0; y--) {
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tempBt = dec(tempBt, (int[]) secondKeyBt.get(y));
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}
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for (z = firstLength - 1; z >= 0; z--) {
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tempBt = dec(tempBt, (int[]) firstKeyBt.get(z));
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}
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decByte = tempBt;
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} else {
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if (firstKey != null && firstKey != "" && secondKey != null
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&& secondKey != "") {
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int[] tempBt;
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int x, y, z;
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tempBt = intByte;
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for (x = secondLength - 1; x >= 0; x--) {
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tempBt = dec(tempBt, (int[]) secondKeyBt.get(x));
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}
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for (y = firstLength - 1; y >= 0; y--) {
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tempBt = dec(tempBt, (int[]) firstKeyBt.get(y));
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}
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decByte = tempBt;
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} else {
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if (firstKey != null && firstKey != "") {
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int[] tempBt;
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int x, y, z;
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tempBt = intByte;
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for (x = firstLength - 1; x >= 0; x--) {
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tempBt = dec(tempBt, (int[]) firstKeyBt.get(x));
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}
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decByte = tempBt;
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}
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}
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}
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decStr += byteToString(decByte);
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}
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return decStr;
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}
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/*
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* chang the string into the bit array
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*
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* return bit array(it's length % 64 = 0)
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*/
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public List getKeyBytes(String key) {
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List keyBytes = new ArrayList();
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int leng = key.length();
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int iterator = (leng / 4);
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int remainder = leng % 4;
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int i = 0;
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for (i = 0; i < iterator; i++) {
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keyBytes.add(i, strToBt(key.substring(i * 4 + 0, i * 4 + 4)));
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}
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if (remainder > 0) {
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// keyBytes[i] = strToBt(key.substring(i*4+0,leng));
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keyBytes.add(i, strToBt(key.substring(i * 4 + 0, leng)));
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}
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return keyBytes;
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}
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/*
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* chang the string(it's length <= 4) into the bit array
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*
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* return bit array(it's length = 64)
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*/
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public int[] strToBt(String str) {
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int leng = str.length();
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int[] bt = new int[64];
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if (leng < 4) {
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int i = 0, j = 0, p = 0, q = 0;
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for (i = 0; i < leng; i++) {
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int k = str.charAt(i);
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for (j = 0; j < 16; j++) {
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int pow = 1, m = 0;
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for (m = 15; m > j; m--) {
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pow *= 2;
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}
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// bt.set(16*i+j,""+(k/pow)%2));
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bt[16 * i + j] = (k / pow) % 2;
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}
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}
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for (p = leng; p < 4; p++) {
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int k = 0;
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for (q = 0; q < 16; q++) {
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int pow = 1, m = 0;
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for (m = 15; m > q; m--) {
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pow *= 2;
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}
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// bt[16*p+q]=parseInt(k/pow)%2;
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// bt.add(16*p+q,""+((k/pow)%2));
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bt[16 * p + q] = (k / pow) % 2;
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}
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}
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} else {
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for (int i = 0; i < 4; i++) {
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int k = str.charAt(i);
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for (int j = 0; j < 16; j++) {
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int pow = 1;
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for (int m = 15; m > j; m--) {
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pow *= 2;
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}
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// bt[16*i+j]=parseInt(k/pow)%2;
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// bt.add(16*i+j,""+((k/pow)%2));
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bt[16 * i + j] = (k / pow) % 2;
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}
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}
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}
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return bt;
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}
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/*
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* chang the bit(it's length = 4) into the hex
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*
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* return hex
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*/
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public String bt4ToHex(String binary) {
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String hex = "";
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if (binary.equalsIgnoreCase("0000")) {
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hex = "0";
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} else if (binary.equalsIgnoreCase("0001")) {
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hex = "1";
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} else if (binary.equalsIgnoreCase("0010")) {
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hex = "2";
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} else if (binary.equalsIgnoreCase("0011")) {
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hex = "3";
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} else if (binary.equalsIgnoreCase("0100")) {
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hex = "4";
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} else if (binary.equalsIgnoreCase("0101")) {
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hex = "5";
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} else if (binary.equalsIgnoreCase("0110")) {
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hex = "6";
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} else if (binary.equalsIgnoreCase("0111")) {
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hex = "7";
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} else if (binary.equalsIgnoreCase("1000")) {
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hex = "8";
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} else if (binary.equalsIgnoreCase("1001")) {
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hex = "9";
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} else if (binary.equalsIgnoreCase("1010")) {
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hex = "A";
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} else if (binary.equalsIgnoreCase("1011")) {
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hex = "B";
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} else if (binary.equalsIgnoreCase("1100")) {
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hex = "C";
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} else if (binary.equalsIgnoreCase("1101")) {
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hex = "D";
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} else if (binary.equalsIgnoreCase("1110")) {
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hex = "E";
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} else if (binary.equalsIgnoreCase("1111")) {
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hex = "F";
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}
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return hex;
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}
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/*
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* chang the hex into the bit(it's length = 4)
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*
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* return the bit(it's length = 4)
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*/
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public String hexToBt4(String hex) {
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String binary = "";
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if (hex.equalsIgnoreCase("0")) {
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binary = "0000";
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} else if (hex.equalsIgnoreCase("1")) {
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binary = "0001";
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}
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if (hex.equalsIgnoreCase("2")) {
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binary = "0010";
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}
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if (hex.equalsIgnoreCase("3")) {
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binary = "0011";
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}
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if (hex.equalsIgnoreCase("4")) {
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binary = "0100";
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}
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if (hex.equalsIgnoreCase("5")) {
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binary = "0101";
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}
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if (hex.equalsIgnoreCase("6")) {
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binary = "0110";
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}
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if (hex.equalsIgnoreCase("7")) {
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binary = "0111";
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}
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if (hex.equalsIgnoreCase("8")) {
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binary = "1000";
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}
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if (hex.equalsIgnoreCase("9")) {
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binary = "1001";
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}
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if (hex.equalsIgnoreCase("A")) {
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binary = "1010";
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}
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if (hex.equalsIgnoreCase("B")) {
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binary = "1011";
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}
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if (hex.equalsIgnoreCase("C")) {
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binary = "1100";
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}
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if (hex.equalsIgnoreCase("D")) {
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binary = "1101";
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}
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if (hex.equalsIgnoreCase("E")) {
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binary = "1110";
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}
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if (hex.equalsIgnoreCase("F")) {
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binary = "1111";
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}
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return binary;
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}
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/*
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* chang the bit(it's length = 64) into the string
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*
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* return string
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*/
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public String byteToString(int[] byteData) {
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String str = "";
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for (int i = 0; i < 4; i++) {
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int count = 0;
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for (int j = 0; j < 16; j++) {
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int pow = 1;
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for (int m = 15; m > j; m--) {
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pow *= 2;
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}
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count += byteData[16 * i + j] * pow;
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}
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if (count != 0) {
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str += "" + (char) (count);
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}
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}
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return str;
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}
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public String bt64ToHex(int[] byteData) {
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String hex = "";
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for (int i = 0; i < 16; i++) {
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String bt = "";
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for (int j = 0; j < 4; j++) {
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bt += byteData[i * 4 + j];
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}
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hex += bt4ToHex(bt);
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}
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return hex;
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}
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public String hexToBt64(String hex) {
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String binary = "";
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for (int i = 0; i < 16; i++) {
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binary += hexToBt4(hex.substring(i, i + 1));
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}
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return binary;
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}
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/*
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* the 64 bit des core arithmetic
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*/
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public int[] enc(int[] dataByte, int[] keyByte) {
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int[][] keys = generateKeys(keyByte);
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int[] ipByte = initPermute(dataByte);
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int[] ipLeft = new int[32];
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int[] ipRight = new int[32];
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int[] tempLeft = new int[32];
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int i = 0, j = 0, k = 0, m = 0, n = 0;
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for (k = 0; k < 32; k++) {
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ipLeft[k] = ipByte[k];
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ipRight[k] = ipByte[32 + k];
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}
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for (i = 0; i < 16; i++) {
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for (j = 0; j < 32; j++) {
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tempLeft[j] = ipLeft[j];
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ipLeft[j] = ipRight[j];
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}
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int[] key = new int[48];
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for (m = 0; m < 48; m++) {
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key[m] = keys[i][m];
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}
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int[] tempRight = xor(pPermute(sBoxPermute(xor(
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expandPermute(ipRight), key))), tempLeft);
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for (n = 0; n < 32; n++) {
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ipRight[n] = tempRight[n];
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}
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}
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int[] finalData = new int[64];
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for (i = 0; i < 32; i++) {
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finalData[i] = ipRight[i];
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finalData[32 + i] = ipLeft[i];
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}
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return finallyPermute(finalData);
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}
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public int[] dec(int[] dataByte, int[] keyByte) {
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int[][] keys = generateKeys(keyByte);
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int[] ipByte = initPermute(dataByte);
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int[] ipLeft = new int[32];
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int[] ipRight = new int[32];
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int[] tempLeft = new int[32];
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int i = 0, j = 0, k = 0, m = 0, n = 0;
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for (k = 0; k < 32; k++) {
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ipLeft[k] = ipByte[k];
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ipRight[k] = ipByte[32 + k];
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}
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for (i = 15; i >= 0; i--) {
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for (j = 0; j < 32; j++) {
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tempLeft[j] = ipLeft[j];
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ipLeft[j] = ipRight[j];
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}
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int[] key = new int[48];
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for (m = 0; m < 48; m++) {
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key[m] = keys[i][m];
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}
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int[] tempRight = xor(pPermute(sBoxPermute(xor(
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expandPermute(ipRight), key))), tempLeft);
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for (n = 0; n < 32; n++) {
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ipRight[n] = tempRight[n];
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}
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}
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int[] finalData = new int[64];
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for (i = 0; i < 32; i++) {
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finalData[i] = ipRight[i];
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finalData[32 + i] = ipLeft[i];
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}
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return finallyPermute(finalData);
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}
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public int[] initPermute(int[] originalData) {
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int[] ipByte = new int[64];
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int i = 0, m = 1, n = 0, j, k;
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for (i = 0, m = 1, n = 0; i < 4; i++, m += 2, n += 2) {
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for (j = 7, k = 0; j >= 0; j--, k++) {
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ipByte[i * 8 + k] = originalData[j * 8 + m];
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ipByte[i * 8 + k + 32] = originalData[j * 8 + n];
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}
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}
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return ipByte;
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}
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public int[] expandPermute(int[] rightData) {
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int[] epByte = new int[48];
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int i, j;
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for (i = 0; i < 8; i++) {
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if (i == 0) {
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epByte[i * 6 + 0] = rightData[31];
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} else {
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epByte[i * 6 + 0] = rightData[i * 4 - 1];
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}
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epByte[i * 6 + 1] = rightData[i * 4 + 0];
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epByte[i * 6 + 2] = rightData[i * 4 + 1];
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epByte[i * 6 + 3] = rightData[i * 4 + 2];
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epByte[i * 6 + 4] = rightData[i * 4 + 3];
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if (i == 7) {
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epByte[i * 6 + 5] = rightData[0];
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} else {
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epByte[i * 6 + 5] = rightData[i * 4 + 4];
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}
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}
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return epByte;
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}
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public int[] xor(int[] byteOne, int[] byteTwo) {
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// var xorByte = new Array(byteOne.length);
-
// for(int i = 0;i < byteOne.length; i ++){
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// xorByte[i] = byteOne[i] ^ byteTwo[i];
-
// }
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// return xorByte;
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int[] xorByte = new int[byteOne.length];
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for (int i = 0; i < byteOne.length; i++) {
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xorByte[i] = byteOne[i] ^ byteTwo[i];
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}
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return xorByte;
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}
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public int[] sBoxPermute(int[] expandByte) {
-
-
// var sBoxByte = new Array(32);
-
int[] sBoxByte = new int[32];
-
String binary = "";
-
int[][] 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 */
-
int[][] 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 */
-
int[][] 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 */
-
int[][] 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 */
-
int[][] 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 */
-
int[][] 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 */
-
int[][] 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 */
-
int[][] 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 (int m = 0; m < 8; m++) {
-
int 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] = Integer.parseInt(binary.substring(0, 1));
-
sBoxByte[m * 4 + 1] = Integer.parseInt(binary.substring(1, 2));
-
sBoxByte[m * 4 + 2] = Integer.parseInt(binary.substring(2, 3));
-
sBoxByte[m * 4 + 3] = Integer.parseInt(binary.substring(3, 4));
-
}
-
return sBoxByte;
-
}
-
-
public int[] pPermute(int[] sBoxByte) {
-
int[] pBoxPermute = new int[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;
-
}
-
-
public int[] finallyPermute(int[] endByte) {
-
int[] fpByte = new int[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;
-
}
-
-
public String getBoxBinary(int i) {
-
String 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
-
*
-
*/
-
public int[][] generateKeys(int[] keyByte) {
-
int[] key = new int[56];
-
int[][] keys = new int[16][48];
-
-
// 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();
-
int[] loop = new int[] { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 };
-
-
for (int i = 0; i < 7; i++) {
-
for (int j = 0, k = 7; j < 8; j++, k--) {
-
key[i * 8 + j] = keyByte[8 * k + i];
-
}
-
}
-
-
int i = 0;
-
for (i = 0; i < 16; i++) {
-
int tempLeft = 0;
-
int tempRight = 0;
-
for (int j = 0; j < loop[i]; j++) {
-
tempLeft = key[0];
-
tempRight = key[28];
-
for (int 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);
-
int[] tempKey = new int[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];
-
int m;
-
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;
-
}
-
}
二、JS实现
1、des.js文件
-
/**
-
* DES加密/解密
-
* @Copyright Copyright (c) 2015
-
* @author liuyazhuang
-
* @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(64);
-
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;
-
}