java 实现加密算法(在网上看的,保存)
- 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 = "admin";
- String str = desObj.strEnc(data, key1, key2, key3);
- 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;
- }
- }
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;
- }
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