Java实现与JS相同的Des加解密算法完整实例
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2023-12-22 13:41:28
本文实例讲述了java实现与js相同的des加解密算法。分享给大家供大家参考，具体如下：
这里演示java与js实现相同的des加解密算法，不多说，不废话，直接上代码...
本文实例讲述了java实现与js相同的des加解密算法。分享给大家供大家参考，具体如下：
这里演示java与js实现相同的des加解密算法，不多说，不废话，直接上代码
一、java实现
package com.lyz.base.des;
import java.util.arraylist;
import java.util.list;
/**
* des加密/解密
*
* @copyright copyright (c) 2015
* @author liuyazhuang
* @see descore
*/
public class des {
public des() {
}
public static void main(string[] args) {
des desobj = new des();
string key1 = "1";
string key2 = "2";
string key3 = "3";
string data = "jb51.net";
string str = desobj.strenc(data, key1, key2, key3);
system.out.println("测试结果：");
system.out.println(str);
string dec = desobj.strdec(str, key1, key2, key3);
system.out.println(dec);
}
/**
* 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
*/
public string strenc(string data, string firstkey, string secondkey,
string thirdkey) {
int leng = data.length();
string encdata = "";
list firstkeybt = null, secondkeybt = null, thirdkeybt = null;
int firstlength = 0, secondlength = 0, thirdlength = 0;
if (firstkey != null && firstkey != "") {
firstkeybt = getkeybytes(firstkey);
firstlength = firstkeybt.size();
}
if (secondkey != null && secondkey != "") {
secondkeybt = getkeybytes(secondkey);
secondlength = secondkeybt.size();
}
if (thirdkey != null && thirdkey != "") {
thirdkeybt = getkeybytes(thirdkey);
thirdlength = thirdkeybt.size();
}
if (leng > 0) {
if (leng < 4) {
int[] bt = strtobt(data);
int[] encbyte = null;
if (firstkey != null && firstkey != "" && secondkey != null
&& secondkey != "" && thirdkey != null
&& thirdkey != "") {
int[] tempbt;
int x, y, z;
tempbt = bt;
for (x = 0; x < firstlength; x++) {
tempbt = enc(tempbt, (int[]) firstkeybt.get(x));
}
for (y = 0; y < secondlength; y++) {
tempbt = enc(tempbt, (int[]) secondkeybt.get(y));
}
for (z = 0; z < thirdlength; z++) {
tempbt = enc(tempbt, (int[]) thirdkeybt.get(z));
}
encbyte = tempbt;
} else {
if (firstkey != null && firstkey != "" && secondkey != null
&& secondkey != "") {
int[] tempbt;
int x, y;
tempbt = bt;
for (x = 0; x < firstlength; x++) {
tempbt = enc(tempbt, (int[]) firstkeybt.get(x));
}
for (y = 0; y < secondlength; y++) {
tempbt = enc(tempbt, (int[]) secondkeybt.get(y));
}
encbyte = tempbt;
} else {
if (firstkey != null && firstkey != "") {
int[] tempbt;
int x = 0;
tempbt = bt;
for (x = 0; x < firstlength; x++) {
tempbt = enc(tempbt, (int[]) firstkeybt.get(x));
}
encbyte = tempbt;
}
}
}
encdata = bt64tohex(encbyte);
} else {
int iterator = (leng / 4);
int remainder = leng % 4;
int i = 0;
for (i = 0; i < iterator; i++) {
string tempdata = data.substring(i * 4 + 0, i * 4 + 4);
int[] tempbyte = strtobt(tempdata);
int[] encbyte = null;
if (firstkey != null && firstkey != "" && secondkey != null
&& secondkey != "" && thirdkey != null
&& thirdkey != "") {
int[] tempbt;
int x, y, z;
tempbt = tempbyte;
for (x = 0; x < firstlength; x++) {
tempbt = enc(tempbt, (int[]) firstkeybt.get(x));
}
for (y = 0; y < secondlength; y++) {
tempbt = enc(tempbt, (int[]) secondkeybt.get(y));
}
for (z = 0; z < thirdlength; z++) {
tempbt = enc(tempbt, (int[]) thirdkeybt.get(z));
}
encbyte = tempbt;
} else {
if (firstkey != null && firstkey != ""
&& secondkey != null && secondkey != "") {
int[] tempbt;
int x, y;
tempbt = tempbyte;
for (x = 0; x < firstlength; x++) {
tempbt = enc(tempbt, (int[]) firstkeybt.get(x));
}
for (y = 0; y < secondlength; y++) {
tempbt = enc(tempbt, (int[]) secondkeybt.get(y));
}
encbyte = tempbt;
} else {
if (firstkey != null && firstkey != "") {
int[] tempbt;
int x;
tempbt = tempbyte;
for (x = 0; x < firstlength; x++) {
tempbt = enc(tempbt, (int[]) firstkeybt
.get(x));
}
encbyte = tempbt;
}
}
}
encdata += bt64tohex(encbyte);
}
if (remainder > 0) {
string remainderdata = data.substring(iterator * 4 + 0,
leng);
int[] tempbyte = strtobt(remainderdata);
int[] encbyte = null;
if (firstkey != null && firstkey != "" && secondkey != null
&& secondkey != "" && thirdkey != null
&& thirdkey != "") {
int[] tempbt;
int x, y, z;
tempbt = tempbyte;
for (x = 0; x < firstlength; x++) {
tempbt = enc(tempbt, (int[]) firstkeybt.get(x));
}
for (y = 0; y < secondlength; y++) {
tempbt = enc(tempbt, (int[]) secondkeybt.get(y));
}
for (z = 0; z < thirdlength; z++) {
tempbt = enc(tempbt, (int[]) thirdkeybt.get(z));
}
encbyte = tempbt;
} else {
if (firstkey != null && firstkey != ""
&& secondkey != null && secondkey != "") {
int[] tempbt;
int x, y;
tempbt = tempbyte;
for (x = 0; x < firstlength; x++) {
tempbt = enc(tempbt, (int[]) firstkeybt.get(x));
}
for (y = 0; y < secondlength; y++) {
tempbt = enc(tempbt, (int[]) secondkeybt.get(y));
}
encbyte = tempbt;
} else {
if (firstkey != null && firstkey != "") {
int[] tempbt;
int x;
tempbt = tempbyte;
for (x = 0; x < firstlength; x++) {
tempbt = enc(tempbt, (int[]) firstkeybt
.get(x));
}
encbyte = tempbt;
}
}
}
encdata += bt64tohex(encbyte);
}
}
}
return encdata;
}
/*
* decrypt the encrypted string to the original string
* return the original string
*/
public string strdec(string data, string firstkey, string secondkey,
string thirdkey) {
int leng = data.length();
string decstr = "";
list firstkeybt = null, secondkeybt = null, thirdkeybt = null;
int firstlength = 0, secondlength = 0, thirdlength = 0;
if (firstkey != null && firstkey != "") {
firstkeybt = getkeybytes(firstkey);
firstlength = firstkeybt.size();
}
if (secondkey != null && secondkey != "") {
secondkeybt = getkeybytes(secondkey);
secondlength = secondkeybt.size();
}
if (thirdkey != null && thirdkey != "") {
thirdkeybt = getkeybytes(thirdkey);
thirdlength = thirdkeybt.size();
}
int iterator = leng / 16;
int i = 0;
for (i = 0; i < iterator; i++) {
string tempdata = data.substring(i * 16 + 0, i * 16 + 16);
string strbyte = hextobt64(tempdata);
int[] intbyte = new int[64];
int j = 0;
for (j = 0; j < 64; j++) {
intbyte[j] = integer.parseint(strbyte.substring(j, j + 1));
}
int[] decbyte = null;
if (firstkey != null && firstkey != "" && secondkey != null
&& secondkey != "" && thirdkey != null && thirdkey != "") {
int[] tempbt;
int x, y, z;
tempbt = intbyte;
for (x = thirdlength - 1; x >= 0; x--) {
tempbt = dec(tempbt, (int[]) thirdkeybt.get(x));
}
for (y = secondlength - 1; y >= 0; y--) {
tempbt = dec(tempbt, (int[]) secondkeybt.get(y));
}
for (z = firstlength - 1; z >= 0; z--) {
tempbt = dec(tempbt, (int[]) firstkeybt.get(z));
}
decbyte = tempbt;
} else {
if (firstkey != null && firstkey != "" && secondkey != null
&& secondkey != "") {
int[] tempbt;
int x, y, z;
tempbt = intbyte;
for (x = secondlength - 1; x >= 0; x--) {
tempbt = dec(tempbt, (int[]) secondkeybt.get(x));
}
for (y = firstlength - 1; y >= 0; y--) {
tempbt = dec(tempbt, (int[]) firstkeybt.get(y));
}
decbyte = tempbt;
} else {
if (firstkey != null && firstkey != "") {
int[] tempbt;
int x, y, z;
tempbt = intbyte;
for (x = firstlength - 1; x >= 0; x--) {
tempbt = dec(tempbt, (int[]) firstkeybt.get(x));
}
decbyte = tempbt;
}
}
}
decstr += bytetostring(decbyte);
}
return decstr;
}
/*
* chang the string into the bit array
*
* return bit array(it's length % 64 = 0)
*/
public list getkeybytes(string key) {
list keybytes = new arraylist();
int leng = key.length();
int iterator = (leng / 4);
int remainder = leng % 4;
int i = 0;
for (i = 0; i < iterator; i++) {
keybytes.add(i, strtobt(key.substring(i * 4 + 0, i * 4 + 4)));
}
if (remainder > 0) {
// keybytes[i] = strtobt(key.substring(i*4+0,leng));
keybytes.add(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)
*/
public int[] strtobt(string str) {
int leng = str.length();
int[] bt = new int[64];
if (leng < 4) {
int i = 0, j = 0, p = 0, q = 0;
for (i = 0; i < leng; i++) {
int k = str.charat(i);
for (j = 0; j < 16; j++) {
int pow = 1, m = 0;
for (m = 15; m > j; m--) {
pow *= 2;
}
// bt.set(16*i+j,""+(k/pow)%2));
bt[16 * i + j] = (k / pow) % 2;
}
}
for (p = leng; p < 4; p++) {
int k = 0;
for (q = 0; q < 16; q++) {
int pow = 1, m = 0;
for (m = 15; m > q; m--) {
pow *= 2;
}
// bt[16*p+q]=parseint(k/pow)%2;
// bt.add(16*p+q,""+((k/pow)%2));
bt[16 * p + q] = (k / pow) % 2;
}
}
} else {
for (int i = 0; i < 4; i++) {
int k = str.charat(i);
for (int j = 0; j < 16; j++) {
int pow = 1;
for (int m = 15; m > j; m--) {
pow *= 2;
}
// bt[16*i+j]=parseint(k/pow)%2;
// bt.add(16*i+j,""+((k/pow)%2));
bt[16 * i + j] = (k / pow) % 2;
}
}
}
return bt;
}
/*
* chang the bit(it's length = 4) into the hex
*
* return hex
*/
public string bt4tohex(string binary) {
string hex = "";
if (binary.equalsignorecase("0000")) {
hex = "0";
} else if (binary.equalsignorecase("0001")) {
hex = "1";
} else if (binary.equalsignorecase("0010")) {
hex = "2";
} else if (binary.equalsignorecase("0011")) {
hex = "3";
} else if (binary.equalsignorecase("0100")) {
hex = "4";
} else if (binary.equalsignorecase("0101")) {
hex = "5";
} else if (binary.equalsignorecase("0110")) {
hex = "6";
} else if (binary.equalsignorecase("0111")) {
hex = "7";
} else if (binary.equalsignorecase("1000")) {
hex = "8";
} else if (binary.equalsignorecase("1001")) {
hex = "9";
} else if (binary.equalsignorecase("1010")) {
hex = "a";
} else if (binary.equalsignorecase("1011")) {
hex = "b";
} else if (binary.equalsignorecase("1100")) {
hex = "c";
} else if (binary.equalsignorecase("1101")) {
hex = "d";
} else if (binary.equalsignorecase("1110")) {
hex = "e";
} else if (binary.equalsignorecase("1111")) {
hex = "f";
}
return hex;
}
/*
* chang the hex into the bit(it's length = 4)
*
* return the bit(it's length = 4)
*/
public string hextobt4(string hex) {
string binary = "";
if (hex.equalsignorecase("0")) {
binary = "0000";
} else if (hex.equalsignorecase("1")) {
binary = "0001";
}
if (hex.equalsignorecase("2")) {
binary = "0010";
}
if (hex.equalsignorecase("3")) {
binary = "0011";
}
if (hex.equalsignorecase("4")) {
binary = "0100";
}
if (hex.equalsignorecase("5")) {
binary = "0101";
}
if (hex.equalsignorecase("6")) {
binary = "0110";
}
if (hex.equalsignorecase("7")) {
binary = "0111";
}
if (hex.equalsignorecase("8")) {
binary = "1000";
}
if (hex.equalsignorecase("9")) {
binary = "1001";
}
if (hex.equalsignorecase("a")) {
binary = "1010";
}
if (hex.equalsignorecase("b")) {
binary = "1011";
}
if (hex.equalsignorecase("c")) {
binary = "1100";
}
if (hex.equalsignorecase("d")) {
binary = "1101";
}
if (hex.equalsignorecase("e")) {
binary = "1110";
}
if (hex.equalsignorecase("f")) {
binary = "1111";
}
return binary;
}
/*
* chang the bit(it's length = 64) into the string
*
* return string
*/
public string bytetostring(int[] bytedata) {
string str = "";
for (int i = 0; i < 4; i++) {
int count = 0;
for (int j = 0; j < 16; j++) {
int pow = 1;
for (int m = 15; m > j; m--) {
pow *= 2;
}
count += bytedata[16 * i + j] * pow;
}
if (count != 0) {
str += "" + (char) (count);
}
}
return str;
}
public string bt64tohex(int[] bytedata) {
string hex = "";
for (int i = 0; i < 16; i++) {
string bt = "";
for (int j = 0; j < 4; j++) {
bt += bytedata[i * 4 + j];
}
hex += bt4tohex(bt);
}
return hex;
}
public string hextobt64(string hex) {
string binary = "";
for (int i = 0; i < 16; i++) {
binary += hextobt4(hex.substring(i, i + 1));
}
return binary;
}
/*
* the 64 bit des core arithmetic
*/
public int[] enc(int[] databyte, int[] keybyte) {
int[][] keys = generatekeys(keybyte);
int[] ipbyte = initpermute(databyte);
int[] ipleft = new int[32];
int[] ipright = new int[32];
int[] templeft = new int[32];
int 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];
}
int[] key = new int[48];
for (m = 0; m < 48; m++) {
key[m] = keys[i][m];
}
int[] tempright = xor(ppermute(sboxpermute(xor(
expandpermute(ipright), key))), templeft);
for (n = 0; n < 32; n++) {
ipright[n] = tempright[n];
}
}
int[] finaldata = new int[64];
for (i = 0; i < 32; i++) {
finaldata[i] = ipright[i];
finaldata[32 + i] = ipleft[i];
}
return finallypermute(finaldata);
}
public int[] dec(int[] databyte, int[] keybyte) {
int[][] keys = generatekeys(keybyte);
int[] ipbyte = initpermute(databyte);
int[] ipleft = new int[32];
int[] ipright = new int[32];
int[] templeft = new int[32];
int 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];
}
int[] key = new int[48];
for (m = 0; m < 48; m++) {
key[m] = keys[i][m];
}
int[] tempright = xor(ppermute(sboxpermute(xor(
expandpermute(ipright), key))), templeft);
for (n = 0; n < 32; n++) {
ipright[n] = tempright[n];
}
}
int[] finaldata = new int[64];
for (i = 0; i < 32; i++) {
finaldata[i] = ipright[i];
finaldata[32 + i] = ipleft[i];
}
return finallypermute(finaldata);
}
public int[] initpermute(int[] originaldata) {
int[] ipbyte = new int[64];
int i = 0, m = 1, n = 0, j, k;
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;
}
public int[] expandpermute(int[] rightdata) {
int[] epbyte = new int[48];
int i, j;
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;
}
public int[] xor(int[] byteone, int[] bytetwo) {
// var xorbyte = new array(byteone.length);
// for(int i = 0;i < byteone.length; i ++){
// xorbyte[i] = byteone[i] ^ bytetwo[i];
// }
// return xorbyte;
int[] xorbyte = new int[byteone.length];
for (int i = 0; i < byteone.length; i++) {
xorbyte[i] = byteone[i] ^ bytetwo[i];
}
return xorbyte;
}
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;
}
}
运行结果：
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;
}
2、des.html文件
<!doctype html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="des.js"></script>
<script>
function getresult(){
//待加密字符串
var str = document.getelementbyid("str").innerhtml;
//第一个参数必须；第二个、第三个参数可选
var key1 = document.getelementbyid("key1").innerhtml;
var key2 = document.getelementbyid("key2").innerhtml;
var key3 = document.getelementbyid("key3").innerhtml;
//加密方法
var enresult = strenc(str,key1,key2,key3);
//解密方法
var deresult = strdec(enresult,key1,key2,key3);
//展示结果
document.getelementbyid("enstr").innerhtml = enresult;
document.getelementbyid("dnstr").innerhtml = deresult;
}
</script>
</head>
<body>
<input type="button" value="获取加密结果与解密结果" onclick="getresult()" />
<table>
<tr>
<td align="left">字符串：</td>
<td><span id="str">jb51.net</span></td>
</tr>
<tr>
<td>加密key：</td>
<td>key1=<span id="key1">1</span>;key2=<span id="key2">2</span>;key3=<span id="key3">3</span></td>
</tr>
<tr>
<td align="left">加密结果：</td>
<td align="left"><label id = "enstr"></label></td>
</tr>
<tr>
<td align="left">解密结果： </td>
<td align="left"><label id = "dnstr"></label></td>
</tr>
<table>
</body>
</html>
运行结果：
ps：关于加密解密感兴趣的朋友还可以参考本站在线工具：
文字在线加密解密工具（包含aes、des、rc4等）：
md5在线加密工具:
http://tools.jb51.net/password/createmd5password
在线散列/哈希算法加密工具:
在线md5/hash/sha-1/sha-2/sha-256/sha-512/sha-3/ripemd-160加密工具：
在线sha1/sha224/sha256/sha384/sha512加密工具：
更多关于java相关内容感兴趣的读者可查看本站专题：《java数学运算技巧总结》、《java数据结构与算法教程》、《java字符与字符串操作技巧总结》、《java操作dom节点技巧总结》和《java缓存操作技巧汇总》
希望本文所述对大家java程序设计有所帮助。