java 实现加密算法（在网上看的，保存）

1. import java.util.ArrayList;
2.  
   import java.util.List;
3.  
    
4.  
   /**
5.  
   * DES加密/解密
6.  
   *
7.  
   * @Copyright Copyright (c) 2015
8.  
   * @author liuyazhuang
9.  
   * @see DESCore
10.  
    */
11.  
    public class Des {
12.  
    public Des() {
13.  
    }
14.  
    public static void main(String[] args) {
15.  
    Des desObj = new Des();
16.  
    String key1 = "1";
17.  
    String key2 = "2";
18.  
    String key3 = "3";
19.  
    String data = "admin";
20.  
    String str = desObj.strEnc(data, key1, key2, key3);
21.  
    System.out.println(str);
22.  
    String dec = desObj.strDec(str, key1, key2, key3);
23.  
    System.out.println(dec);
24.  
    }
25.  
     
26.  
    /**
27.  
    * DES加密/解密
28.  
    *
29.  
    * @Copyright Copyright (c) 2015
30.  
    * @author liuyazhuang
31.  
    * @see DESCore
32.  
    */
33.  
     
34.  
    /*
35.  
    * encrypt the string to string made up of hex return the encrypted string
36.  
    */
37.  
    public String strEnc(String data, String firstKey, String secondKey,
38.  
    String thirdKey) {
39.  
     
40.  
    int leng = data.length();
41.  
    String encData = "";
42.  
    List firstKeyBt = null, secondKeyBt = null, thirdKeyBt = null;
43.  
    int firstLength = 0, secondLength = 0, thirdLength = 0;
44.  
    if (firstKey != null && firstKey != "") {
45.  
    firstKeyBt = getKeyBytes(firstKey);
46.  
    firstLength = firstKeyBt.size();
47.  
    }
48.  
    if (secondKey != null && secondKey != "") {
49.  
    secondKeyBt = getKeyBytes(secondKey);
50.  
    secondLength = secondKeyBt.size();
51.  
    }
52.  
    if (thirdKey != null && thirdKey != "") {
53.  
    thirdKeyBt = getKeyBytes(thirdKey);
54.  
    thirdLength = thirdKeyBt.size();
55.  
    }
56.  
     
57.  
    if (leng > 0) {
58.  
    if (leng < 4) {
59.  
    int[] bt = strToBt(data);
60.  
    int[] encByte = null;
61.  
    if (firstKey != null && firstKey != "" && secondKey != null
62.  
    && secondKey != "" && thirdKey != null
63.  
    && thirdKey != "") {
64.  
    int[] tempBt;
65.  
    int x, y, z;
66.  
    tempBt = bt;
67.  
    for (x = 0; x < firstLength; x++) {
68.  
    tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
69.  
    }
70.  
    for (y = 0; y < secondLength; y++) {
71.  
    tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
72.  
    }
73.  
    for (z = 0; z < thirdLength; z++) {
74.  
    tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z));
75.  
    }
76.  
    encByte = tempBt;
77.  
    } else {
78.  
    if (firstKey != null && firstKey != "" && secondKey != null
79.  
    && secondKey != "") {
80.  
    int[] tempBt;
81.  
    int x, y;
82.  
    tempBt = bt;
83.  
    for (x = 0; x < firstLength; x++) {
84.  
    tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
85.  
    }
86.  
    for (y = 0; y < secondLength; y++) {
87.  
    tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
88.  
    }
89.  
    encByte = tempBt;
90.  
    } else {
91.  
    if (firstKey != null && firstKey != "") {
92.  
    int[] tempBt;
93.  
    int x = 0;
94.  
    tempBt = bt;
95.  
    for (x = 0; x < firstLength; x++) {
96.  
    tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
97.  
    }
98.  
    encByte = tempBt;
99.  
    }
100.  
     }
101.  
     }
102.  
     encData = bt64ToHex(encByte);
103.  
     } else {
104.  
     int iterator = (leng / 4);
105.  
     int remainder = leng % 4;
106.  
     int i = 0;
107.  
     for (i = 0; i < iterator; i++) {
108.  
     String tempData = data.substring(i * 4 + 0, i * 4 + 4);
109.  
     int[] tempByte = strToBt(tempData);
110.  
     int[] encByte = null;
111.  
     if (firstKey != null && firstKey != "" && secondKey != null
112.  
     && secondKey != "" && thirdKey != null
113.  
     && thirdKey != "") {
114.  
     int[] tempBt;
115.  
     int x, y, z;
116.  
     tempBt = tempByte;
117.  
     for (x = 0; x < firstLength; x++) {
118.  
     tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
119.  
     }
120.  
     for (y = 0; y < secondLength; y++) {
121.  
     tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
122.  
     }
123.  
     for (z = 0; z < thirdLength; z++) {
124.  
     tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z));
125.  
     }
126.  
     encByte = tempBt;
127.  
     } else {
128.  
     if (firstKey != null && firstKey != ""
129.  
     && secondKey != null && secondKey != "") {
130.  
     int[] tempBt;
131.  
     int x, y;
132.  
     tempBt = tempByte;
133.  
     for (x = 0; x < firstLength; x++) {
134.  
     tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
135.  
     }
136.  
     for (y = 0; y < secondLength; y++) {
137.  
     tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
138.  
     }
139.  
     encByte = tempBt;
140.  
     } else {
141.  
     if (firstKey != null && firstKey != "") {
142.  
     int[] tempBt;
143.  
     int x;
144.  
     tempBt = tempByte;
145.  
     for (x = 0; x < firstLength; x++) {
146.  
     tempBt = enc(tempBt, (int[]) firstKeyBt
147.  
     .get(x));
148.  
     }
149.  
     encByte = tempBt;
150.  
     }
151.  
     }
152.  
     }
153.  
     encData += bt64ToHex(encByte);
154.  
     }
155.  
     if (remainder > 0) {
156.  
     String remainderData = data.substring(iterator * 4 + 0,
157.  
     leng);
158.  
     int[] tempByte = strToBt(remainderData);
159.  
     int[] encByte = null;
160.  
     if (firstKey != null && firstKey != "" && secondKey != null
161.  
     && secondKey != "" && thirdKey != null
162.  
     && thirdKey != "") {
163.  
     int[] tempBt;
164.  
     int x, y, z;
165.  
     tempBt = tempByte;
166.  
     for (x = 0; x < firstLength; x++) {
167.  
     tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
168.  
     }
169.  
     for (y = 0; y < secondLength; y++) {
170.  
     tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
171.  
     }
172.  
     for (z = 0; z < thirdLength; z++) {
173.  
     tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z));
174.  
     }
175.  
     encByte = tempBt;
176.  
     } else {
177.  
     if (firstKey != null && firstKey != ""
178.  
     && secondKey != null && secondKey != "") {
179.  
     int[] tempBt;
180.  
     int x, y;
181.  
     tempBt = tempByte;
182.  
     for (x = 0; x < firstLength; x++) {
183.  
     tempBt = enc(tempBt, (int[]) firstKeyBt.get(x));
184.  
     }
185.  
     for (y = 0; y < secondLength; y++) {
186.  
     tempBt = enc(tempBt, (int[]) secondKeyBt.get(y));
187.  
     }
188.  
     encByte = tempBt;
189.  
     } else {
190.  
     if (firstKey != null && firstKey != "") {
191.  
     int[] tempBt;
192.  
     int x;
193.  
     tempBt = tempByte;
194.  
     for (x = 0; x < firstLength; x++) {
195.  
     tempBt = enc(tempBt, (int[]) firstKeyBt
196.  
     .get(x));
197.  
     }
198.  
     encByte = tempBt;
199.  
     }
200.  
     }
201.  
     }
202.  
     encData += bt64ToHex(encByte);
203.  
     }
204.  
     }
205.  
     }
206.  
     return encData;
207.  
     }
208.  
      
209.  
     /*
210.  
     * decrypt the encrypted string to the original string
211.  
     * return the original string
212.  
     */
213.  
     public String strDec(String data, String firstKey, String secondKey,
214.  
     String thirdKey) {
215.  
     int leng = data.length();
216.  
     String decStr = "";
217.  
     List firstKeyBt = null, secondKeyBt = null, thirdKeyBt = null;
218.  
     int firstLength = 0, secondLength = 0, thirdLength = 0;
219.  
     if (firstKey != null && firstKey != "") {
220.  
     firstKeyBt = getKeyBytes(firstKey);
221.  
     firstLength = firstKeyBt.size();
222.  
     }
223.  
     if (secondKey != null && secondKey != "") {
224.  
     secondKeyBt = getKeyBytes(secondKey);
225.  
     secondLength = secondKeyBt.size();
226.  
     }
227.  
     if (thirdKey != null && thirdKey != "") {
228.  
     thirdKeyBt = getKeyBytes(thirdKey);
229.  
     thirdLength = thirdKeyBt.size();
230.  
     }
231.  
      
232.  
     int iterator = leng / 16;
233.  
     int i = 0;
234.  
     for (i = 0; i < iterator; i++) {
235.  
     String tempData = data.substring(i * 16 + 0, i * 16 + 16);
236.  
     String strByte = hexToBt64(tempData);
237.  
     int[] intByte = new int[64];
238.  
     int j = 0;
239.  
     for (j = 0; j < 64; j++) {
240.  
     intByte[j] = Integer.parseInt(strByte.substring(j, j + 1));
241.  
     }
242.  
     int[] decByte = null;
243.  
     if (firstKey != null && firstKey != "" && secondKey != null
244.  
     && secondKey != "" && thirdKey != null && thirdKey != "") {
245.  
     int[] tempBt;
246.  
     int x, y, z;
247.  
     tempBt = intByte;
248.  
     for (x = thirdLength - 1; x >= 0; x--) {
249.  
     tempBt = dec(tempBt, (int[]) thirdKeyBt.get(x));
250.  
     }
251.  
     for (y = secondLength - 1; y >= 0; y--) {
252.  
     tempBt = dec(tempBt, (int[]) secondKeyBt.get(y));
253.  
     }
254.  
     for (z = firstLength - 1; z >= 0; z--) {
255.  
     tempBt = dec(tempBt, (int[]) firstKeyBt.get(z));
256.  
     }
257.  
     decByte = tempBt;
258.  
     } else {
259.  
     if (firstKey != null && firstKey != "" && secondKey != null
260.  
     && secondKey != "") {
261.  
     int[] tempBt;
262.  
     int x, y, z;
263.  
     tempBt = intByte;
264.  
     for (x = secondLength - 1; x >= 0; x--) {
265.  
     tempBt = dec(tempBt, (int[]) secondKeyBt.get(x));
266.  
     }
267.  
     for (y = firstLength - 1; y >= 0; y--) {
268.  
     tempBt = dec(tempBt, (int[]) firstKeyBt.get(y));
269.  
     }
270.  
     decByte = tempBt;
271.  
     } else {
272.  
     if (firstKey != null && firstKey != "") {
273.  
     int[] tempBt;
274.  
     int x, y, z;
275.  
     tempBt = intByte;
276.  
     for (x = firstLength - 1; x >= 0; x--) {
277.  
     tempBt = dec(tempBt, (int[]) firstKeyBt.get(x));
278.  
     }
279.  
     decByte = tempBt;
280.  
     }
281.  
     }
282.  
     }
283.  
     decStr += byteToString(decByte);
284.  
     }
285.  
     return decStr;
286.  
     }
287.  
      
288.  
     /*
289.  
     * chang the string into the bit array
290.  
     *
291.  
     * return bit array(it's length % 64 = 0)
292.  
     */
293.  
     public List getKeyBytes(String key) {
294.  
     List keyBytes = new ArrayList();
295.  
     int leng = key.length();
296.  
     int iterator = (leng / 4);
297.  
     int remainder = leng % 4;
298.  
     int i = 0;
299.  
     for (i = 0; i < iterator; i++) {
300.  
     keyBytes.add(i, strToBt(key.substring(i * 4 + 0, i * 4 + 4)));
301.  
     }
302.  
     if (remainder > 0) {
303.  
     // keyBytes[i] = strToBt(key.substring(i*4+0,leng));
304.  
     keyBytes.add(i, strToBt(key.substring(i * 4 + 0, leng)));
305.  
     }
306.  
     return keyBytes;
307.  
     }
308.  
      
309.  
     /*
310.  
     * chang the string(it's length <= 4) into the bit array
311.  
     *
312.  
     * return bit array(it's length = 64)
313.  
     */
314.  
     public int[] strToBt(String str) {
315.  
     int leng = str.length();
316.  
     int[] bt = new int[64];
317.  
     if (leng < 4) {
318.  
     int i = 0, j = 0, p = 0, q = 0;
319.  
     for (i = 0; i < leng; i++) {
320.  
     int k = str.charAt(i);
321.  
     for (j = 0; j < 16; j++) {
322.  
     int pow = 1, m = 0;
323.  
     for (m = 15; m > j; m--) {
324.  
     pow *= 2;
325.  
     }
326.  
     // bt.set(16*i+j,""+(k/pow)%2));
327.  
     bt[16 * i + j] = (k / pow) % 2;
328.  
     }
329.  
     }
330.  
     for (p = leng; p < 4; p++) {
331.  
     int k = 0;
332.  
     for (q = 0; q < 16; q++) {
333.  
     int pow = 1, m = 0;
334.  
     for (m = 15; m > q; m--) {
335.  
     pow *= 2;
336.  
     }
337.  
     // bt[16*p+q]=parseInt(k/pow)%2;
338.  
     // bt.add(16*p+q,""+((k/pow)%2));
339.  
     bt[16 * p + q] = (k / pow) % 2;
340.  
     }
341.  
     }
342.  
     } else {
343.  
     for (int i = 0; i < 4; i++) {
344.  
     int k = str.charAt(i);
345.  
     for (int j = 0; j < 16; j++) {
346.  
     int pow = 1;
347.  
     for (int m = 15; m > j; m--) {
348.  
     pow *= 2;
349.  
     }
350.  
     // bt[16*i+j]=parseInt(k/pow)%2;
351.  
     // bt.add(16*i+j,""+((k/pow)%2));
352.  
     bt[16 * i + j] = (k / pow) % 2;
353.  
     }
354.  
     }
355.  
     }
356.  
     return bt;
357.  
     }
358.  
      
359.  
     /*
360.  
     * chang the bit(it's length = 4) into the hex
361.  
     *
362.  
     * return hex
363.  
     */
364.  
     public String bt4ToHex(String binary) {
365.  
     String hex = "";
366.  
     if (binary.equalsIgnoreCase("0000")) {
367.  
     hex = "0";
368.  
     } else if (binary.equalsIgnoreCase("0001")) {
369.  
     hex = "1";
370.  
     } else if (binary.equalsIgnoreCase("0010")) {
371.  
     hex = "2";
372.  
     } else if (binary.equalsIgnoreCase("0011")) {
373.  
     hex = "3";
374.  
     } else if (binary.equalsIgnoreCase("0100")) {
375.  
     hex = "4";
376.  
     } else if (binary.equalsIgnoreCase("0101")) {
377.  
     hex = "5";
378.  
     } else if (binary.equalsIgnoreCase("0110")) {
379.  
     hex = "6";
380.  
     } else if (binary.equalsIgnoreCase("0111")) {
381.  
     hex = "7";
382.  
     } else if (binary.equalsIgnoreCase("1000")) {
383.  
     hex = "8";
384.  
     } else if (binary.equalsIgnoreCase("1001")) {
385.  
     hex = "9";
386.  
     } else if (binary.equalsIgnoreCase("1010")) {
387.  
     hex = "A";
388.  
     } else if (binary.equalsIgnoreCase("1011")) {
389.  
     hex = "B";
390.  
     } else if (binary.equalsIgnoreCase("1100")) {
391.  
     hex = "C";
392.  
     } else if (binary.equalsIgnoreCase("1101")) {
393.  
     hex = "D";
394.  
     } else if (binary.equalsIgnoreCase("1110")) {
395.  
     hex = "E";
396.  
     } else if (binary.equalsIgnoreCase("1111")) {
397.  
     hex = "F";
398.  
     }
399.  
      
400.  
     return hex;
401.  
     }
402.  
      
403.  
     /*
404.  
     * chang the hex into the bit(it's length = 4)
405.  
     *
406.  
     * return the bit(it's length = 4)
407.  
     */
408.  
     public String hexToBt4(String hex) {
409.  
     String binary = "";
410.  
     if (hex.equalsIgnoreCase("0")) {
411.  
     binary = "0000";
412.  
     } else if (hex.equalsIgnoreCase("1")) {
413.  
     binary = "0001";
414.  
     }
415.  
     if (hex.equalsIgnoreCase("2")) {
416.  
     binary = "0010";
417.  
     }
418.  
     if (hex.equalsIgnoreCase("3")) {
419.  
     binary = "0011";
420.  
     }
421.  
     if (hex.equalsIgnoreCase("4")) {
422.  
     binary = "0100";
423.  
     }
424.  
     if (hex.equalsIgnoreCase("5")) {
425.  
     binary = "0101";
426.  
     }
427.  
     if (hex.equalsIgnoreCase("6")) {
428.  
     binary = "0110";
429.  
     }
430.  
     if (hex.equalsIgnoreCase("7")) {
431.  
     binary = "0111";
432.  
     }
433.  
     if (hex.equalsIgnoreCase("8")) {
434.  
     binary = "1000";
435.  
     }
436.  
     if (hex.equalsIgnoreCase("9")) {
437.  
     binary = "1001";
438.  
     }
439.  
     if (hex.equalsIgnoreCase("A")) {
440.  
     binary = "1010";
441.  
     }
442.  
     if (hex.equalsIgnoreCase("B")) {
443.  
     binary = "1011";
444.  
     }
445.  
     if (hex.equalsIgnoreCase("C")) {
446.  
     binary = "1100";
447.  
     }
448.  
     if (hex.equalsIgnoreCase("D")) {
449.  
     binary = "1101";
450.  
     }
451.  
     if (hex.equalsIgnoreCase("E")) {
452.  
     binary = "1110";
453.  
     }
454.  
     if (hex.equalsIgnoreCase("F")) {
455.  
     binary = "1111";
456.  
     }
457.  
     return binary;
458.  
     }
459.  
      
460.  
     /*
461.  
     * chang the bit(it's length = 64) into the string
462.  
     *
463.  
     * return string
464.  
     */
465.  
     public String byteToString(int[] byteData) {
466.  
     String str = "";
467.  
     for (int i = 0; i < 4; i++) {
468.  
     int count = 0;
469.  
     for (int j = 0; j < 16; j++) {
470.  
     int pow = 1;
471.  
     for (int m = 15; m > j; m--) {
472.  
     pow *= 2;
473.  
     }
474.  
     count += byteData[16 * i + j] * pow;
475.  
     }
476.  
     if (count != 0) {
477.  
     str += "" + (char) (count);
478.  
     }
479.  
     }
480.  
     return str;
481.  
     }
482.  
      
483.  
     public String bt64ToHex(int[] byteData) {
484.  
     String hex = "";
485.  
     for (int i = 0; i < 16; i++) {
486.  
     String bt = "";
487.  
     for (int j = 0; j < 4; j++) {
488.  
     bt += byteData[i * 4 + j];
489.  
     }
490.  
     hex += bt4ToHex(bt);
491.  
     }
492.  
     return hex;
493.  
     }
494.  
      
495.  
     public String hexToBt64(String hex) {
496.  
     String binary = "";
497.  
     for (int i = 0; i < 16; i++) {
498.  
     binary += hexToBt4(hex.substring(i, i + 1));
499.  
     }
500.  
     return binary;
501.  
     }
502.  
      
503.  
     /*
504.  
     * the 64 bit des core arithmetic
505.  
     */
506.  
      
507.  
     public int[] enc(int[] dataByte, int[] keyByte) {
508.  
     int[][] keys = generateKeys(keyByte);
509.  
     int[] ipByte = initPermute(dataByte);
510.  
     int[] ipLeft = new int[32];
511.  
     int[] ipRight = new int[32];
512.  
     int[] tempLeft = new int[32];
513.  
     int i = 0, j = 0, k = 0, m = 0, n = 0;
514.  
     for (k = 0; k < 32; k++) {
515.  
     ipLeft[k] = ipByte[k];
516.  
     ipRight[k] = ipByte[32 + k];
517.  
     }
518.  
     for (i = 0; i < 16; i++) {
519.  
     for (j = 0; j < 32; j++) {
520.  
     tempLeft[j] = ipLeft[j];
521.  
     ipLeft[j] = ipRight[j];
522.  
     }
523.  
     int[] key = new int[48];
524.  
     for (m = 0; m < 48; m++) {
525.  
     key[m] = keys[i][m];
526.  
     }
527.  
     int[] tempRight = xor(pPermute(sBoxPermute(xor(
528.  
     expandPermute(ipRight), key))), tempLeft);
529.  
     for (n = 0; n < 32; n++) {
530.  
     ipRight[n] = tempRight[n];
531.  
     }
532.  
      
533.  
     }
534.  
      
535.  
     int[] finalData = new int[64];
536.  
     for (i = 0; i < 32; i++) {
537.  
     finalData[i] = ipRight[i];
538.  
     finalData[32 + i] = ipLeft[i];
539.  
     }
540.  
     return finallyPermute(finalData);
541.  
     }
542.  
      
543.  
     public int[] dec(int[] dataByte, int[] keyByte) {
544.  
     int[][] keys = generateKeys(keyByte);
545.  
     int[] ipByte = initPermute(dataByte);
546.  
     int[] ipLeft = new int[32];
547.  
     int[] ipRight = new int[32];
548.  
     int[] tempLeft = new int[32];
549.  
     int i = 0, j = 0, k = 0, m = 0, n = 0;
550.  
     for (k = 0; k < 32; k++) {
551.  
     ipLeft[k] = ipByte[k];
552.  
     ipRight[k] = ipByte[32 + k];
553.  
     }
554.  
     for (i = 15; i >= 0; i--) {
555.  
     for (j = 0; j < 32; j++) {
556.  
     tempLeft[j] = ipLeft[j];
557.  
     ipLeft[j] = ipRight[j];
558.  
     }
559.  
     int[] key = new int[48];
560.  
     for (m = 0; m < 48; m++) {
561.  
     key[m] = keys[i][m];
562.  
     }
563.  
      
564.  
     int[] tempRight = xor(pPermute(sBoxPermute(xor(
565.  
     expandPermute(ipRight), key))), tempLeft);
566.  
     for (n = 0; n < 32; n++) {
567.  
     ipRight[n] = tempRight[n];
568.  
     }
569.  
     }
570.  
      
571.  
     int[] finalData = new int[64];
572.  
     for (i = 0; i < 32; i++) {
573.  
     finalData[i] = ipRight[i];
574.  
     finalData[32 + i] = ipLeft[i];
575.  
     }
576.  
     return finallyPermute(finalData);
577.  
     }
578.  
      
579.  
     public int[] initPermute(int[] originalData) {
580.  
     int[] ipByte = new int[64];
581.  
     int i = 0, m = 1, n = 0, j, k;
582.  
     for (i = 0, m = 1, n = 0; i < 4; i++, m += 2, n += 2) {
583.  
     for (j = 7, k = 0; j >= 0; j--, k++) {
584.  
     ipByte[i * 8 + k] = originalData[j * 8 + m];
585.  
     ipByte[i * 8 + k + 32] = originalData[j * 8 + n];
586.  
     }
587.  
     }
588.  
     return ipByte;
589.  
     }
590.  
      
591.  
     public int[] expandPermute(int[] rightData) {
592.  
     int[] epByte = new int[48];
593.  
     int i, j;
594.  
     for (i = 0; i < 8; i++) {
595.  
     if (i == 0) {
596.  
     epByte[i * 6 + 0] = rightData[31];
597.  
     } else {
598.  
     epByte[i * 6 + 0] = rightData[i * 4 - 1];
599.  
     }
600.  
     epByte[i * 6 + 1] = rightData[i * 4 + 0];
601.  
     epByte[i * 6 + 2] = rightData[i * 4 + 1];
602.  
     epByte[i * 6 + 3] = rightData[i * 4 + 2];
603.  
     epByte[i * 6 + 4] = rightData[i * 4 + 3];
604.  
     if (i == 7) {
605.  
     epByte[i * 6 + 5] = rightData[0];
606.  
     } else {
607.  
     epByte[i * 6 + 5] = rightData[i * 4 + 4];
608.  
     }
609.  
     }
610.  
     return epByte;
611.  
     }
612.  
      
613.  
     public int[] xor(int[] byteOne, int[] byteTwo) {
614.  
     // var xorByte = new Array(byteOne.length);
615.  
     // for(int i = 0;i < byteOne.length; i ++){
616.  
     // xorByte[i] = byteOne[i] ^ byteTwo[i];
617.  
     // }
618.  
     // return xorByte;
619.  
     int[] xorByte = new int[byteOne.length];
620.  
     for (int i = 0; i < byteOne.length; i++) {
621.  
     xorByte[i] = byteOne[i] ^ byteTwo[i];
622.  
     }
623.  
     return xorByte;
624.  
     }
625.  
      
626.  
     public int[] sBoxPermute(int[] expandByte) {
627.  
      
628.  
     // var sBoxByte = new Array(32);
629.  
     int[] sBoxByte = new int[32];
630.  
     String binary = "";
631.  
     int[][] s1 = {
632.  
     { 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7 },
633.  
     { 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8 },
634.  
     { 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0 },
635.  
     { 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 } };
636.  
      
637.  
     /* Table - s2 */
638.  
     int[][] s2 = {
639.  
     { 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10 },
640.  
     { 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5 },
641.  
     { 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15 },
642.  
     { 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 } };
643.  
      
644.  
     /* Table - s3 */
645.  
     int[][] s3 = {
646.  
     { 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8 },
647.  
     { 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1 },
648.  
     { 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7 },
649.  
     { 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 } };
650.  
     /* Table - s4 */
651.  
     int[][] s4 = {
652.  
     { 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15 },
653.  
     { 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9 },
654.  
     { 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4 },
655.  
     { 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 } };
656.  
      
657.  
     /* Table - s5 */
658.  
     int[][] s5 = {
659.  
     { 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9 },
660.  
     { 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6 },
661.  
     { 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14 },
662.  
     { 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 } };
663.  
      
664.  
     /* Table - s6 */
665.  
     int[][] s6 = {
666.  
     { 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11 },
667.  
     { 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8 },
668.  
     { 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6 },
669.  
     { 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 } };
670.  
      
671.  
     /* Table - s7 */
672.  
     int[][] s7 = {
673.  
     { 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1 },
674.  
     { 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6 },
675.  
     { 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2 },
676.  
     { 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 } };
677.  
      
678.  
     /* Table - s8 */
679.  
     int[][] s8 = {
680.  
     { 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7 },
681.  
     { 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2 },
682.  
     { 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8 },
683.  
     { 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 } };
684.  
      
685.  
     for (int m = 0; m < 8; m++) {
686.  
     int i = 0, j = 0;
687.  
     i = expandByte[m * 6 + 0] * 2 + expandByte[m * 6 + 5];
688.  
     j = expandByte[m * 6 + 1] * 2 * 2 * 2 + expandByte[m * 6 + 2] * 2
689.  
     * 2 + expandByte[m * 6 + 3] * 2 + expandByte[m * 6 + 4];
690.  
     switch (m) {
691.  
     case 0:
692.  
     binary = getBoxBinary(s1[i][j]);
693.  
     break;
694.  
     case 1:
695.  
     binary = getBoxBinary(s2[i][j]);
696.  
     break;
697.  
     case 2:
698.  
     binary = getBoxBinary(s3[i][j]);
699.  
     break;
700.  
     case 3:
701.  
     binary = getBoxBinary(s4[i][j]);
702.  
     break;
703.  
     case 4:
704.  
     binary = getBoxBinary(s5[i][j]);
705.  
     break;
706.  
     case 5:
707.  
     binary = getBoxBinary(s6[i][j]);
708.  
     break;
709.  
     case 6:
710.  
     binary = getBoxBinary(s7[i][j]);
711.  
     break;
712.  
     case 7:
713.  
     binary = getBoxBinary(s8[i][j]);
714.  
     break;
715.  
     }
716.  
     sBoxByte[m * 4 + 0] = Integer.parseInt(binary.substring(0, 1));
717.  
     sBoxByte[m * 4 + 1] = Integer.parseInt(binary.substring(1, 2));
718.  
     sBoxByte[m * 4 + 2] = Integer.parseInt(binary.substring(2, 3));
719.  
     sBoxByte[m * 4 + 3] = Integer.parseInt(binary.substring(3, 4));
720.  
     }
721.  
     return sBoxByte;
722.  
     }
723.  
      
724.  
     public int[] pPermute(int[] sBoxByte) {
725.  
     int[] pBoxPermute = new int[32];
726.  
     pBoxPermute[0] = sBoxByte[15];
727.  
     pBoxPermute[1] = sBoxByte[6];
728.  
     pBoxPermute[2] = sBoxByte[19];
729.  
     pBoxPermute[3] = sBoxByte[20];
730.  
     pBoxPermute[4] = sBoxByte[28];
731.  
     pBoxPermute[5] = sBoxByte[11];
732.  
     pBoxPermute[6] = sBoxByte[27];
733.  
     pBoxPermute[7] = sBoxByte[16];
734.  
     pBoxPermute[8] = sBoxByte[0];
735.  
     pBoxPermute[9] = sBoxByte[14];
736.  
     pBoxPermute[10] = sBoxByte[22];
737.  
     pBoxPermute[11] = sBoxByte[25];
738.  
     pBoxPermute[12] = sBoxByte[4];
739.  
     pBoxPermute[13] = sBoxByte[17];
740.  
     pBoxPermute[14] = sBoxByte[30];
741.  
     pBoxPermute[15] = sBoxByte[9];
742.  
     pBoxPermute[16] = sBoxByte[1];
743.  
     pBoxPermute[17] = sBoxByte[7];
744.  
     pBoxPermute[18] = sBoxByte[23];
745.  
     pBoxPermute[19] = sBoxByte[13];
746.  
     pBoxPermute[20] = sBoxByte[31];
747.  
     pBoxPermute[21] = sBoxByte[26];
748.  
     pBoxPermute[22] = sBoxByte[2];
749.  
     pBoxPermute[23] = sBoxByte[8];
750.  
     pBoxPermute[24] = sBoxByte[18];
751.  
     pBoxPermute[25] = sBoxByte[12];
752.  
     pBoxPermute[26] = sBoxByte[29];
753.  
     pBoxPermute[27] = sBoxByte[5];
754.  
     pBoxPermute[28] = sBoxByte[21];
755.  
     pBoxPermute[29] = sBoxByte[10];
756.  
     pBoxPermute[30] = sBoxByte[3];
757.  
     pBoxPermute[31] = sBoxByte[24];
758.  
     return pBoxPermute;
759.  
     }
760.  
      
761.  
     public int[] finallyPermute(int[] endByte) {
762.  
     int[] fpByte = new int[64];
763.  
     fpByte[0] = endByte[39];
764.  
     fpByte[1] = endByte[7];
765.  
     fpByte[2] = endByte[47];
766.  
     fpByte[3] = endByte[15];
767.  
     fpByte[4] = endByte[55];
768.  
     fpByte[5] = endByte[23];
769.  
     fpByte[6] = endByte[63];
770.  
     fpByte[7] = endByte[31];
771.  
     fpByte[8] = endByte[38];
772.  
     fpByte[9] = endByte[6];
773.  
     fpByte[10] = endByte[46];
774.  
     fpByte[11] = endByte[14];
775.  
     fpByte[12] = endByte[54];
776.  
     fpByte[13] = endByte[22];
777.  
     fpByte[14] = endByte[62];
778.  
     fpByte[15] = endByte[30];
779.  
     fpByte[16] = endByte[37];
780.  
     fpByte[17] = endByte[5];
781.  
     fpByte[18] = endByte[45];
782.  
     fpByte[19] = endByte[13];
783.  
     fpByte[20] = endByte[53];
784.  
     fpByte[21] = endByte[21];
785.  
     fpByte[22] = endByte[61];
786.  
     fpByte[23] = endByte[29];
787.  
     fpByte[24] = endByte[36];
788.  
     fpByte[25] = endByte[4];
789.  
     fpByte[26] = endByte[44];
790.  
     fpByte[27] = endByte[12];
791.  
     fpByte[28] = endByte[52];
792.  
     fpByte[29] = endByte[20];
793.  
     fpByte[30] = endByte[60];
794.  
     fpByte[31] = endByte[28];
795.  
     fpByte[32] = endByte[35];
796.  
     fpByte[33] = endByte[3];
797.  
     fpByte[34] = endByte[43];
798.  
     fpByte[35] = endByte[11];
799.  
     fpByte[36] = endByte[51];
800.  
     fpByte[37] = endByte[19];
801.  
     fpByte[38] = endByte[59];
802.  
     fpByte[39] = endByte[27];
803.  
     fpByte[40] = endByte[34];
804.  
     fpByte[41] = endByte[2];
805.  
     fpByte[42] = endByte[42];
806.  
     fpByte[43] = endByte[10];
807.  
     fpByte[44] = endByte[50];
808.  
     fpByte[45] = endByte[18];
809.  
     fpByte[46] = endByte[58];
810.  
     fpByte[47] = endByte[26];
811.  
     fpByte[48] = endByte[33];
812.  
     fpByte[49] = endByte[1];
813.  
     fpByte[50] = endByte[41];
814.  
     fpByte[51] = endByte[9];
815.  
     fpByte[52] = endByte[49];
816.  
     fpByte[53] = endByte[17];
817.  
     fpByte[54] = endByte[57];
818.  
     fpByte[55] = endByte[25];
819.  
     fpByte[56] = endByte[32];
820.  
     fpByte[57] = endByte[0];
821.  
     fpByte[58] = endByte[40];
822.  
     fpByte[59] = endByte[8];
823.  
     fpByte[60] = endByte[48];
824.  
     fpByte[61] = endByte[16];
825.  
     fpByte[62] = endByte[56];
826.  
     fpByte[63] = endByte[24];
827.  
     return fpByte;
828.  
     }
829.  
      
830.  
     public String getBoxBinary(int i) {
831.  
     String binary = "";
832.  
     switch (i) {
833.  
     case 0:
834.  
     binary = "0000";
835.  
     break;
836.  
     case 1:
837.  
     binary = "0001";
838.  
     break;
839.  
     case 2:
840.  
     binary = "0010";
841.  
     break;
842.  
     case 3:
843.  
     binary = "0011";
844.  
     break;
845.  
     case 4:
846.  
     binary = "0100";
847.  
     break;
848.  
     case 5:
849.  
     binary = "0101";
850.  
     break;
851.  
     case 6:
852.  
     binary = "0110";
853.  
     break;
854.  
     case 7:
855.  
     binary = "0111";
856.  
     break;
857.  
     case 8:
858.  
     binary = "1000";
859.  
     break;
860.  
     case 9:
861.  
     binary = "1001";
862.  
     break;
863.  
     case 10:
864.  
     binary = "1010";
865.  
     break;
866.  
     case 11:
867.  
     binary = "1011";
868.  
     break;
869.  
     case 12:
870.  
     binary = "1100";
871.  
     break;
872.  
     case 13:
873.  
     binary = "1101";
874.  
     break;
875.  
     case 14:
876.  
     binary = "1110";
877.  
     break;
878.  
     case 15:
879.  
     binary = "1111";
880.  
     break;
881.  
     }
882.  
     return binary;
883.  
     }
884.  
      
885.  
     /*
886.  
     * generate 16 keys for xor
887.  
     *
888.  
     */
889.  
     public int[][] generateKeys(int[] keyByte) {
890.  
     int[] key = new int[56];
891.  
     int[][] keys = new int[16][48];
892.  
      
893.  
     // keys[ 0] = new Array();
894.  
     // keys[ 1] = new Array();
895.  
     // keys[ 2] = new Array();
896.  
     // keys[ 3] = new Array();
897.  
     // keys[ 4] = new Array();
898.  
     // keys[ 5] = new Array();
899.  
     // keys[ 6] = new Array();
900.  
     // keys[ 7] = new Array();
901.  
     // keys[ 8] = new Array();
902.  
     // keys[ 9] = new Array();
903.  
     // keys[10] = new Array();
904.  
     // keys[11] = new Array();
905.  
     // keys[12] = new Array();
906.  
     // keys[13] = new Array();
907.  
     // keys[14] = new Array();
908.  
     // keys[15] = new Array();
909.  
     int[] loop = new int[] { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 };
910.  
      
911.  
     for (int i = 0; i < 7; i++) {
912.  
     for (int j = 0, k = 7; j < 8; j++, k--) {
913.  
     key[i * 8 + j] = keyByte[8 * k + i];
914.  
     }
915.  
     }
916.  
      
917.  
     int i = 0;
918.  
     for (i = 0; i < 16; i++) {
919.  
     int tempLeft = 0;
920.  
     int tempRight = 0;
921.  
     for (int j = 0; j < loop[i]; j++) {
922.  
     tempLeft = key[0];
923.  
     tempRight = key[28];
924.  
     for (int k = 0; k < 27; k++) {
925.  
     key[k] = key[k + 1];
926.  
     key[28 + k] = key[29 + k];
927.  
     }
928.  
     key[27] = tempLeft;
929.  
     key[55] = tempRight;
930.  
     }
931.  
     // var tempKey = new Array(48);
932.  
     int[] tempKey = new int[48];
933.  
     tempKey[0] = key[13];
934.  
     tempKey[1] = key[16];
935.  
     tempKey[2] = key[10];
936.  
     tempKey[3] = key[23];
937.  
     tempKey[4] = key[0];
938.  
     tempKey[5] = key[4];
939.  
     tempKey[6] = key[2];
940.  
     tempKey[7] = key[27];
941.  
     tempKey[8] = key[14];
942.  
     tempKey[9] = key[5];
943.  
     tempKey[10] = key[20];
944.  
     tempKey[11] = key[9];
945.  
     tempKey[12] = key[22];
946.  
     tempKey[13] = key[18];
947.  
     tempKey[14] = key[11];
948.  
     tempKey[15] = key[3];
949.  
     tempKey[16] = key[25];
950.  
     tempKey[17] = key[7];
951.  
     tempKey[18] = key[15];
952.  
     tempKey[19] = key[6];
953.  
     tempKey[20] = key[26];
954.  
     tempKey[21] = key[19];
955.  
     tempKey[22] = key[12];
956.  
     tempKey[23] = key[1];
957.  
     tempKey[24] = key[40];
958.  
     tempKey[25] = key[51];
959.  
     tempKey[26] = key[30];
960.  
     tempKey[27] = key[36];
961.  
     tempKey[28] = key[46];
962.  
     tempKey[29] = key[54];
963.  
     tempKey[30] = key[29];
964.  
     tempKey[31] = key[39];
965.  
     tempKey[32] = key[50];
966.  
     tempKey[33] = key[44];
967.  
     tempKey[34] = key[32];
968.  
     tempKey[35] = key[47];
969.  
     tempKey[36] = key[43];
970.  
     tempKey[37] = key[48];
971.  
     tempKey[38] = key[38];
972.  
     tempKey[39] = key[55];
973.  
     tempKey[40] = key[33];
974.  
     tempKey[41] = key[52];
975.  
     tempKey[42] = key[45];
976.  
     tempKey[43] = key[41];
977.  
     tempKey[44] = key[49];
978.  
     tempKey[45] = key[35];
979.  
     tempKey[46] = key[28];
980.  
     tempKey[47] = key[31];
981.  
     int m;
982.  
     switch (i) {
983.  
     case 0:
984.  
     for (m = 0; m < 48; m++) {
985.  
     keys[0][m] = tempKey[m];
986.  
     }
987.  
     break;
988.  
     case 1:
989.  
     for (m = 0; m < 48; m++) {
990.  
     keys[1][m] = tempKey[m];
991.  
     }
992.  
     break;
993.  
     case 2:
994.  
     for (m = 0; m < 48; m++) {
995.  
     keys[2][m] = tempKey[m];
996.  
     }
997.  
     break;
998.  
     case 3:
999.  
     for (m = 0; m < 48; m++) {
1000.  
      keys[3][m] = tempKey[m];
1001.  
      }
1002.  
      break;
1003.  
      case 4:
1004.  
      for (m = 0; m < 48; m++) {
1005.  
      keys[4][m] = tempKey[m];
1006.  
      }
1007.  
      break;
1008.  
      case 5:
1009.  
      for (m = 0; m < 48; m++) {
1010.  
      keys[5][m] = tempKey[m];
1011.  
      }
1012.  
      break;
1013.  
      case 6:
1014.  
      for (m = 0; m < 48; m++) {
1015.  
      keys[6][m] = tempKey[m];
1016.  
      }
1017.  
      break;
1018.  
      case 7:
1019.  
      for (m = 0; m < 48; m++) {
1020.  
      keys[7][m] = tempKey[m];
1021.  
      }
1022.  
      break;
1023.  
      case 8:
1024.  
      for (m = 0; m < 48; m++) {
1025.  
      keys[8][m] = tempKey[m];
1026.  
      }
1027.  
      break;
1028.  
      case 9:
1029.  
      for (m = 0; m < 48; m++) {
1030.  
      keys[9][m] = tempKey[m];
1031.  
      }
1032.  
      break;
1033.  
      case 10:
1034.  
      for (m = 0; m < 48; m++) {
1035.  
      keys[10][m] = tempKey[m];
1036.  
      }
1037.  
      break;
1038.  
      case 11:
1039.  
      for (m = 0; m < 48; m++) {
1040.  
      keys[11][m] = tempKey[m];
1041.  
      }
1042.  
      break;
1043.  
      case 12:
1044.  
      for (m = 0; m < 48; m++) {
1045.  
      keys[12][m] = tempKey[m];
1046.  
      }
1047.  
      break;
1048.  
      case 13:
1049.  
      for (m = 0; m < 48; m++) {
1050.  
      keys[13][m] = tempKey[m];
1051.  
      }
1052.  
      break;
1053.  
      case 14:
1054.  
      for (m = 0; m < 48; m++) {
1055.  
      keys[14][m] = tempKey[m];
1056.  
      }
1057.  
      break;
1058.  
      case 15:
1059.  
      for (m = 0; m < 48; m++) {
1060.  
      keys[15][m] = tempKey[m];
1061.  
      }
1062.  
      break;
1063.  
      }
1064.  
      }
1065.  
      return keys;
1066.  
      }
1067.  
      }

二、JS实现

1、des.js文件

1.  
   /**
2.  
   * DES加密/解密
3.  
   * @Copyright Copyright (c) 2015
4.  
   * @author liuyazhuang
5.  
   * @see DESCore
6.  
   */
7.  
    
8.  
   /*
9.  
   * encrypt the string to string made up of hex
10.  
    * return the encrypted string
11.  
    */
12.  
    function strEnc(data,firstKey,secondKey,thirdKey){
13.  
    var leng = data.length;
14.  
    var encData = "";
15.  
    var firstKeyBt,secondKeyBt,thirdKeyBt,firstLength,secondLength,thirdLength;
16.  
    if(firstKey != null && firstKey != ""){
17.  
    firstKeyBt = getKeyBytes(firstKey);
18.  
    firstLength = firstKeyBt.length;
19.  
    }
20.  
    if(secondKey != null && secondKey != ""){
21.  
    secondKeyBt = getKeyBytes(secondKey);
22.  
    secondLength = secondKeyBt.length;
23.  
    }
24.  
    if(thirdKey != null && thirdKey != ""){
25.  
    thirdKeyBt = getKeyBytes(thirdKey);
26.  
    thirdLength = thirdKeyBt.length;
27.  
    }
28.  
     
29.  
    if(leng > 0){
30.  
    if(leng < 4){
31.  
    var bt = strToBt(data);
32.  
    var encByte ;
33.  
    if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){
34.  
    var tempBt;
35.  
    var x,y,z;
36.  
    tempBt = bt;
37.  
    for(x = 0;x < firstLength ;x ++){
38.  
    tempBt = enc(tempBt,firstKeyBt[x]);
39.  
    }
40.  
    for(y = 0;y < secondLength ;y ++){
41.  
    tempBt = enc(tempBt,secondKeyBt[y]);
42.  
    }
43.  
    for(z = 0;z < thirdLength ;z ++){
44.  
    tempBt = enc(tempBt,thirdKeyBt[z]);
45.  
    }
46.  
    encByte = tempBt;
47.  
    }else{
48.  
    if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){
49.  
    var tempBt;
50.  
    var x,y;
51.  
    tempBt = bt;
52.  
    for(x = 0;x < firstLength ;x ++){
53.  
    tempBt = enc(tempBt,firstKeyBt[x]);
54.  
    }
55.  
    for(y = 0;y < secondLength ;y ++){
56.  
    tempBt = enc(tempBt,secondKeyBt[y]);
57.  
    }
58.  
    encByte = tempBt;
59.  
    }else{
60.  
    if(firstKey != null && firstKey !=""){
61.  
    var tempBt;
62.  
    var x = 0;
63.  
    tempBt = bt;
64.  
    for(x = 0;x < firstLength ;x ++){
65.  
    tempBt = enc(tempBt,firstKeyBt[x]);
66.  
    }
67.  
    encByte = tempBt;
68.  
    }
69.  
    }
70.  
    }
71.  
    encData = bt64ToHex(encByte);
72.  
    }else{
73.  
    var iterator = parseInt(leng/4);
74.  
    var remainder = leng%4;
75.  
    var i=0;
76.  
    for(i = 0;i < iterator;i++){
77.  
    var tempData = data.substring(i*4+0,i*4+4);
78.  
    var tempByte = strToBt(tempData);
79.  
    var encByte ;
80.  
    if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){
81.  
    var tempBt;
82.  
    var x,y,z;
83.  
    tempBt = tempByte;
84.  
    for(x = 0;x < firstLength ;x ++){
85.  
    tempBt = enc(tempBt,firstKeyBt[x]);
86.  
    }
87.  
    for(y = 0;y < secondLength ;y ++){
88.  
    tempBt = enc(tempBt,secondKeyBt[y]);
89.  
    }
90.  
    for(z = 0;z < thirdLength ;z ++){
91.  
    tempBt = enc(tempBt,thirdKeyBt[z]);
92.  
    }
93.  
    encByte = tempBt;
94.  
    }else{
95.  
    if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){
96.  
    var tempBt;
97.  
    var x,y;
98.  
    tempBt = tempByte;
99.  
    for(x = 0;x < firstLength ;x ++){
100.  
     tempBt = enc(tempBt,firstKeyBt[x]);
101.  
     }
102.  
     for(y = 0;y < secondLength ;y ++){
103.  
     tempBt = enc(tempBt,secondKeyBt[y]);
104.  
     }
105.  
     encByte = tempBt;
106.  
     }else{
107.  
     if(firstKey != null && firstKey !=""){
108.  
     var tempBt;
109.  
     var x;
110.  
     tempBt = tempByte;
111.  
     for(x = 0;x < firstLength ;x ++){
112.  
     tempBt = enc(tempBt,firstKeyBt[x]);
113.  
     }
114.  
     encByte = tempBt;
115.  
     }
116.  
     }
117.  
     }
118.  
     encData += bt64ToHex(encByte);
119.  
     }
120.  
     if(remainder > 0){
121.  
     var remainderData = data.substring(iterator*4+0,leng);
122.  
     var tempByte = strToBt(remainderData);
123.  
     var encByte ;
124.  
     if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){
125.  
     var tempBt;
126.  
     var x,y,z;
127.  
     tempBt = tempByte;
128.  
     for(x = 0;x < firstLength ;x ++){
129.  
     tempBt = enc(tempBt,firstKeyBt[x]);
130.  
     }
131.  
     for(y = 0;y < secondLength ;y ++){
132.  
     tempBt = enc(tempBt,secondKeyBt[y]);
133.  
     }
134.  
     for(z = 0;z < thirdLength ;z ++){
135.  
     tempBt = enc(tempBt,thirdKeyBt[z]);
136.  
     }
137.  
     encByte = tempBt;
138.  
     }else{
139.  
     if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){
140.  
     var tempBt;
141.  
     var x,y;
142.  
     tempBt = tempByte;
143.  
     for(x = 0;x < firstLength ;x ++){
144.  
     tempBt = enc(tempBt,firstKeyBt[x]);
145.  
     }
146.  
     for(y = 0;y < secondLength ;y ++){
147.  
     tempBt = enc(tempBt,secondKeyBt[y]);
148.  
     }
149.  
     encByte = tempBt;
150.  
     }else{
151.  
     if(firstKey != null && firstKey !=""){
152.  
     var tempBt;
153.  
     var x;
154.  
     tempBt = tempByte;
155.  
     for(x = 0;x < firstLength ;x ++){
156.  
     tempBt = enc(tempBt,firstKeyBt[x]);
157.  
     }
158.  
     encByte = tempBt;
159.  
     }
160.  
     }
161.  
     }
162.  
     encData += bt64ToHex(encByte);
163.  
     }
164.  
     }
165.  
     }
166.  
     return encData;
167.  
     }
168.  
      
169.  
     /*
170.  
     * decrypt the encrypted string to the original string
171.  
     *
172.  
     * return the original string
173.  
     */
174.  
     function strDec(data,firstKey,secondKey,thirdKey){
175.  
     var leng = data.length;
176.  
     var decStr = "";
177.  
     var firstKeyBt,secondKeyBt,thirdKeyBt,firstLength,secondLength,thirdLength;
178.  
     if(firstKey != null && firstKey != ""){
179.  
     firstKeyBt = getKeyBytes(firstKey);
180.  
     firstLength = firstKeyBt.length;
181.  
     }
182.  
     if(secondKey != null && secondKey != ""){
183.  
     secondKeyBt = getKeyBytes(secondKey);
184.  
     secondLength = secondKeyBt.length;
185.  
     }
186.  
     if(thirdKey != null && thirdKey != ""){
187.  
     thirdKeyBt = getKeyBytes(thirdKey);
188.  
     thirdLength = thirdKeyBt.length;
189.  
     }
190.  
      
191.  
     var iterator = parseInt(leng/16);
192.  
     var i=0;
193.  
     for(i = 0;i < iterator;i++){
194.  
     var tempData = data.substring(i*16+0,i*16+16);
195.  
     var strByte = hexToBt64(tempData);
196.  
     var intByte = new Array(64);
197.  
     var j = 0;
198.  
     for(j = 0;j < 64; j++){
199.  
     intByte[j] = parseInt(strByte.substring(j,j+1));
200.  
     }
201.  
     var decByte;
202.  
     if(firstKey != null && firstKey !="" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != ""){
203.  
     var tempBt;
204.  
     var x,y,z;
205.  
     tempBt = intByte;
206.  
     for(x = thirdLength - 1;x >= 0;x --){
207.  
     tempBt = dec(tempBt,thirdKeyBt[x]);
208.  
     }
209.  
     for(y = secondLength - 1;y >= 0;y --){
210.  
     tempBt = dec(tempBt,secondKeyBt[y]);
211.  
     }
212.  
     for(z = firstLength - 1;z >= 0 ;z --){
213.  
     tempBt = dec(tempBt,firstKeyBt[z]);
214.  
     }
215.  
     decByte = tempBt;
216.  
     }else{
217.  
     if(firstKey != null && firstKey !="" && secondKey != null && secondKey != ""){
218.  
     var tempBt;
219.  
     var x,y,z;
220.  
     tempBt = intByte;
221.  
     for(x = secondLength - 1;x >= 0 ;x --){
222.  
     tempBt = dec(tempBt,secondKeyBt[x]);
223.  
     }
224.  
     for(y = firstLength - 1;y >= 0 ;y --){
225.  
     tempBt = dec(tempBt,firstKeyBt[y]);
226.  
     }
227.  
     decByte = tempBt;
228.  
     }else{
229.  
     if(firstKey != null && firstKey !=""){
230.  
     var tempBt;
231.  
     var x,y,z;
232.  
     tempBt = intByte;
233.  
     for(x = firstLength - 1;x >= 0 ;x --){
234.  
     tempBt = dec(tempBt,firstKeyBt[x]);
235.  
     }
236.  
     decByte = tempBt;
237.  
     }
238.  
     }
239.  
     }
240.  
     decStr += byteToString(decByte);
241.  
     }
242.  
     return decStr;
243.  
     }
244.  
     /*
245.  
     * chang the string into the bit array
246.  
     *
247.  
     * return bit array(it's length % 64 = 0)
248.  
     */
249.  
     function getKeyBytes(key){
250.  
     var keyBytes = new Array();
251.  
     var leng = key.length;
252.  
     var iterator = parseInt(leng/4);
253.  
     var remainder = leng%4;
254.  
     var i = 0;
255.  
     for(i = 0;i < iterator; i ++){
256.  
     keyBytes[i] = strToBt(key.substring(i*4+0,i*4+4));
257.  
     }
258.  
     if(remainder > 0){
259.  
     keyBytes[i] = strToBt(key.substring(i*4+0,leng));
260.  
     }
261.  
     return keyBytes;
262.  
     }
263.  
      
264.  
     /*
265.  
     * chang the string(it's length <= 4) into the bit array
266.  
     *
267.  
     * return bit array(it's length = 64)
268.  
     */
269.  
     function strToBt(str){
270.  
     var leng = str.length;
271.  
     var bt = new Array(64);
272.  
     if(leng < 4){
273.  
     var i=0,j=0,p=0,q=0;
274.  
     for(i = 0;i<leng;i++){
275.  
     var k = str.charCodeAt(i);
276.  
     for(j=0;j<16;j++){
277.  
     var pow=1,m=0;
278.  
     for(m=15;m>j;m--){
279.  
     pow *= 2;
280.  
     }
281.  
     bt[16*i+j]=parseInt(k/pow)%2;
282.  
     }
283.  
     }
284.  
     for(p = leng;p<4;p++){
285.  
     var k = 0;
286.  
     for(q=0;q<16;q++){
287.  
     var pow=1,m=0;
288.  
     for(m=15;m>q;m--){
289.  
     pow *= 2;
290.  
     }
291.  
     bt[16*p+q]=parseInt(k/pow)%2;
292.  
     }
293.  
     }
294.  
     }else{
295.  
     for(i = 0;i<4;i++){
296.  
     var k = str.charCodeAt(i);
297.  
     for(j=0;j<16;j++){
298.  
     var pow=1;
299.  
     for(m=15;m>j;m--){
300.  
     pow *= 2;
301.  
     }
302.  
     bt[16*i+j]=parseInt(k/pow)%2;
303.  
     }
304.  
     }
305.  
     }
306.  
     return bt;
307.  
     }
308.  
      
309.  
     /*
310.  
     * chang the bit(it's length = 4) into the hex
311.  
     *
312.  
     * return hex
313.  
     */
314.  
     function bt4ToHex(binary) {
315.  
     var hex;
316.  
     switch (binary) {
317.  
     case "0000" : hex = "0"; break;
318.  
     case "0001" : hex = "1"; break;
319.  
     case "0010" : hex = "2"; break;
320.  
     case "0011" : hex = "3"; break;
321.  
     case "0100" : hex = "4"; break;
322.  
     case "0101" : hex = "5"; break;
323.  
     case "0110" : hex = "6"; break;
324.  
     case "0111" : hex = "7"; break;
325.  
     case "1000" : hex = "8"; break;
326.  
     case "1001" : hex = "9"; break;
327.  
     case "1010" : hex = "A"; break;
328.  
     case "1011" : hex = "B"; break;
329.  
     case "1100" : hex = "C"; break;
330.  
     case "1101" : hex = "D"; break;
331.  
     case "1110" : hex = "E"; break;
332.  
     case "1111" : hex = "F"; break;
333.  
     }
334.  
     return hex;
335.  
     }
336.  
      
337.  
     /*
338.  
     * chang the hex into the bit(it's length = 4)
339.  
     *
340.  
     * return the bit(it's length = 4)
341.  
     */
342.  
     function hexToBt4(hex) {
343.  
     var binary;
344.  
     switch (hex) {
345.  
     case "0" : binary = "0000"; break;
346.  
     case "1" : binary = "0001"; break;
347.  
     case "2" : binary = "0010"; break;
348.  
     case "3" : binary = "0011"; break;
349.  
     case "4" : binary = "0100"; break;
350.  
     case "5" : binary = "0101"; break;
351.  
     case "6" : binary = "0110"; break;
352.  
     case "7" : binary = "0111"; break;
353.  
     case "8" : binary = "1000"; break;
354.  
     case "9" : binary = "1001"; break;
355.  
     case "A" : binary = "1010"; break;
356.  
     case "B" : binary = "1011"; break;
357.  
     case "C" : binary = "1100"; break;
358.  
     case "D" : binary = "1101"; break;
359.  
     case "E" : binary = "1110"; break;
360.  
     case "F" : binary = "1111"; break;
361.  
     }
362.  
     return binary;
363.  
     }
364.  
      
365.  
     /*
366.  
     * chang the bit(it's length = 64) into the string
367.  
     *
368.  
     * return string
369.  
     */
370.  
     function byteToString(byteData){
371.  
     var str="";
372.  
     for(i = 0;i<4;i++){
373.  
     var count=0;
374.  
     for(j=0;j<16;j++){
375.  
     var pow=1;
376.  
     for(m=15;m>j;m--){
377.  
     pow*=2;
378.  
     }
379.  
     count+=byteData[16*i+j]*pow;
380.  
     }
381.  
     if(count != 0){
382.  
     str+=String.fromCharCode(count);
383.  
     }
384.  
     }
385.  
     return str;
386.  
     }
387.  
      
388.  
     function bt64ToHex(byteData){
389.  
     var hex = "";
390.  
     for(i = 0;i<16;i++){
391.  
     var bt = "";
392.  
     for(j=0;j<4;j++){
393.  
     bt += byteData[i*4+j];
394.  
     }
395.  
     hex+=bt4ToHex(bt);
396.  
     }
397.  
     return hex;
398.  
     }
399.  
      
400.  
     function hexToBt64(hex){
401.  
     var binary = "";
402.  
     for(i = 0;i<16;i++){
403.  
     binary+=hexToBt4(hex.substring(i,i+1));
404.  
     }
405.  
     return binary;
406.  
     }
407.  
      
408.  
     /*
409.  
     * the 64 bit des core arithmetic
410.  
     */
411.  
      
412.  
     function enc(dataByte,keyByte){
413.  
     var keys = generateKeys(keyByte);
414.  
     var ipByte = initPermute(dataByte);
415.  
     var ipLeft = new Array(32);
416.  
     var ipRight = new Array(32);
417.  
     var tempLeft = new Array(32);
418.  
     var i = 0,j = 0,k = 0,m = 0, n = 0;
419.  
     for(k = 0;k < 32;k ++){
420.  
     ipLeft[k] = ipByte[k];
421.  
     ipRight[k] = ipByte[32+k];
422.  
     }
423.  
     for(i = 0;i < 16;i ++){
424.  
     for(j = 0;j < 32;j ++){
425.  
     tempLeft[j] = ipLeft[j];
426.  
     ipLeft[j] = ipRight[j];
427.  
     }
428.  
     var key = new Array(48);
429.  
     for(m = 0;m < 48;m ++){
430.  
     key[m] = keys[i][m];
431.  
     }
432.  
     var tempRight = xor(pPermute(sBoxPermute(xor(expandPermute(ipRight),key))), tempLeft);
433.  
     for(n = 0;n < 32;n ++){
434.  
     ipRight[n] = tempRight[n];
435.  
     }
436.  
      
437.  
     }
438.  
      
439.  
      
440.  
     var finalData =new Array(64);
441.  
     for(i = 0;i < 32;i ++){
442.  
     finalData[i] = ipRight[i];
443.  
     finalData[32+i] = ipLeft[i];
444.  
     }
445.  
     return finallyPermute(finalData);
446.  
     }
447.  
      
448.  
     function dec(dataByte,keyByte){
449.  
     var keys = generateKeys(keyByte);
450.  
     var ipByte = initPermute(dataByte);
451.  
     var ipLeft = new Array(32);
452.  
     var ipRight = new Array(32);
453.  
     var tempLeft = new Array(32);
454.  
     var i = 0,j = 0,k = 0,m = 0, n = 0;
455.  
     for(k = 0;k < 32;k ++){
456.  
     ipLeft[k] = ipByte[k];
457.  
     ipRight[k] = ipByte[32+k];
458.  
     }
459.  
     for(i = 15;i >= 0;i --){
460.  
     for(j = 0;j < 32;j ++){
461.  
     tempLeft[j] = ipLeft[j];
462.  
     ipLeft[j] = ipRight[j];
463.  
     }
464.  
     var key = new Array(48);
465.  
     for(m = 0;m < 48;m ++){
466.  
     key[m] = keys[i][m];
467.  
     }
468.  
      
469.  
     var tempRight = xor(pPermute(sBoxPermute(xor(expandPermute(ipRight),key))), tempLeft);
470.  
     for(n = 0;n < 32;n ++){
471.  
     ipRight[n] = tempRight[n];
472.  
     }
473.  
     }
474.  
      
475.  
      
476.  
     var finalData =new Array(64);
477.  
     for(i = 0;i < 32;i ++){
478.  
     finalData[i] = ipRight[i];
479.  
     finalData[32+i] = ipLeft[i];
480.  
     }
481.  
     return finallyPermute(finalData);
482.  
     }
483.  
      
484.  
     function initPermute(originalData){
485.  
     var ipByte = new Array(64);
486.  
     for (i = 0, m = 1, n = 0; i < 4; i++, m += 2, n += 2) {
487.  
     for (j = 7, k = 0; j >= 0; j--, k++) {
488.  
     ipByte[i * 8 + k] = originalData[j * 8 + m];
489.  
     ipByte[i * 8 + k + 32] = originalData[j * 8 + n];
490.  
     }
491.  
     }
492.  
     return ipByte;
493.  
     }
494.  
      
495.  
     function expandPermute(rightData){
496.  
     var epByte = new Array(48);
497.  
     for (i = 0; i < 8; i++) {
498.  
     if (i == 0) {
499.  
     epByte[i * 6 + 0] = rightData[31];
500.  
     } else {
501.  
     epByte[i * 6 + 0] = rightData[i * 4 - 1];
502.  
     }
503.  
     epByte[i * 6 + 1] = rightData[i * 4 + 0];
504.  
     epByte[i * 6 + 2] = rightData[i * 4 + 1];
505.  
     epByte[i * 6 + 3] = rightData[i * 4 + 2];
506.  
     epByte[i * 6 + 4] = rightData[i * 4 + 3];
507.  
     if (i == 7) {
508.  
     epByte[i * 6 + 5] = rightData[0];
509.  
     } else {
510.  
     epByte[i * 6 + 5] = rightData[i * 4 + 4];
511.  
     }
512.  
     }
513.  
     return epByte;
514.  
     }
515.  
      
516.  
     function xor(byteOne,byteTwo){
517.  
     var xorByte = new Array(byteOne.length);
518.  
     for(i = 0;i < byteOne.length; i ++){
519.  
     xorByte[i] = byteOne[i] ^ byteTwo[i];
520.  
     }
521.  
     return xorByte;
522.  
     }
523.  
      
524.  
     function sBoxPermute(expandByte){
525.  
      
526.  
     var sBoxByte = new Array(32);
527.  
     var binary = "";
528.  
     var s1 = [
529.  
     [14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7],
530.  
     [0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8],
531.  
     [4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0],
532.  
     [15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 ]];
533.  
      
534.  
     /* Table - s2 */
535.  
     var s2 = [
536.  
     [15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10],
537.  
     [3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5],
538.  
     [0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15],
539.  
     [13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 ]];
540.  
      
541.  
     /* Table - s3 */
542.  
     var s3= [
543.  
     [10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8],
544.  
     [13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1],
545.  
     [13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7],
546.  
     [1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 ]];
547.  
     /* Table - s4 */
548.  
     var s4 = [
549.  
     [7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15],
550.  
     [13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9],
551.  
     [10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4],
552.  
     [3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 ]];
553.  
      
554.  
     /* Table - s5 */
555.  
     var s5 = [
556.  
     [2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9],
557.  
     [14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6],
558.  
     [4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14],
559.  
     [11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 ]];
560.  
      
561.  
     /* Table - s6 */
562.  
     var s6 = [
563.  
     [12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11],
564.  
     [10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8],
565.  
     [9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6],
566.  
     [4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 ]];
567.  
      
568.  
     /* Table - s7 */
569.  
     var s7 = [
570.  
     [4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1],
571.  
     [13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6],
572.  
     [1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2],
573.  
     [6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12]];
574.  
      
575.  
     /* Table - s8 */
576.  
     var s8 = [
577.  
     [13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7],
578.  
     [1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2],
579.  
     [7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8],
580.  
     [2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11]];
581.  
      
582.  
     for(m=0;m<8;m++){
583.  
     var i=0,j=0;
584.  
     i = expandByte[m*6+0]*2+expandByte[m*6+5];
585.  
     j = expandByte[m * 6 + 1] * 2 * 2 * 2
586.  
     + expandByte[m * 6 + 2] * 2* 2
587.  
     + expandByte[m * 6 + 3] * 2
588.  
     + expandByte[m * 6 + 4];
589.  
     switch (m) {
590.  
     case 0 :
591.  
     binary = getBoxBinary(s1[i][j]);
592.  
     break;
593.  
     case 1 :
594.  
     binary = getBoxBinary(s2[i][j]);
595.  
     break;
596.  
     case 2 :
597.  
     binary = getBoxBinary(s3[i][j]);
598.  
     break;
599.  
     case 3 :
600.  
     binary = getBoxBinary(s4[i][j]);
601.  
     break;
602.  
     case 4 :
603.  
     binary = getBoxBinary(s5[i][j]);
604.  
     break;
605.  
     case 5 :
606.  
     binary = getBoxBinary(s6[i][j]);
607.  
     break;
608.  
     case 6 :
609.  
     binary = getBoxBinary(s7[i][j]);
610.  
     break;
611.  
     case 7 :
612.  
     binary = getBoxBinary(s8[i][j]);
613.  
     break;
614.  
     }
615.  
     sBoxByte[m*4+0] = parseInt(binary.substring(0,1));
616.  
     sBoxByte[m*4+1] = parseInt(binary.substring(1,2));
617.  
     sBoxByte[m*4+2] = parseInt(binary.substring(2,3));
618.  
     sBoxByte[m*4+3] = parseInt(binary.substring(3,4));
619.  
     }
620.  
     return sBoxByte;
621.  
     }
622.  
      
623.  
     function pPermute(sBoxByte){
624.  
     var pBoxPermute = new Array(32);
625.  
     pBoxPermute[ 0] = sBoxByte[15];
626.  
     pBoxPermute[ 1] = sBoxByte[ 6];
627.  
     pBoxPermute[ 2] = sBoxByte[19];
628.  
     pBoxPermute[ 3] = sBoxByte[20];
629.  
     pBoxPermute[ 4] = sBoxByte[28];
630.  
     pBoxPermute[ 5] = sBoxByte[11];
631.  
     pBoxPermute[ 6] = sBoxByte[27];
632.  
     pBoxPermute[ 7] = sBoxByte[16];
633.  
     pBoxPermute[ 8] = sBoxByte[ 0];
634.  
     pBoxPermute[ 9] = sBoxByte[14];
635.  
     pBoxPermute[10] = sBoxByte[22];
636.  
     pBoxPermute[11] = sBoxByte[25];
637.  
     pBoxPermute[12] = sBoxByte[ 4];
638.  
     pBoxPermute[13] = sBoxByte[17];
639.  
     pBoxPermute[14] = sBoxByte[30];
640.  
     pBoxPermute[15] = sBoxByte[ 9];
641.  
     pBoxPermute[16] = sBoxByte[ 1];
642.  
     pBoxPermute[17] = sBoxByte[ 7];
643.  
     pBoxPermute[18] = sBoxByte[23];
644.  
     pBoxPermute[19] = sBoxByte[13];
645.  
     pBoxPermute[20] = sBoxByte[31];
646.  
     pBoxPermute[21] = sBoxByte[26];
647.  
     pBoxPermute[22] = sBoxByte[ 2];
648.  
     pBoxPermute[23] = sBoxByte[ 8];
649.  
     pBoxPermute[24] = sBoxByte[18];
650.  
     pBoxPermute[25] = sBoxByte[12];
651.  
     pBoxPermute[26] = sBoxByte[29];
652.  
     pBoxPermute[27] = sBoxByte[ 5];
653.  
     pBoxPermute[28] = sBoxByte[21];
654.  
     pBoxPermute[29] = sBoxByte[10];
655.  
     pBoxPermute[30] = sBoxByte[ 3];
656.  
     pBoxPermute[31] = sBoxByte[24];
657.  
     return pBoxPermute;
658.  
     }
659.  
      
660.  
     function finallyPermute(endByte){
661.  
     var fpByte = new Array(64);
662.  
     fpByte[ 0] = endByte[39];
663.  
     fpByte[ 1] = endByte[ 7];
664.  
     fpByte[ 2] = endByte[47];
665.  
     fpByte[ 3] = endByte[15];
666.  
     fpByte[ 4] = endByte[55];
667.  
     fpByte[ 5] = endByte[23];
668.  
     fpByte[ 6] = endByte[63];
669.  
     fpByte[ 7] = endByte[31];
670.  
     fpByte[ 8] = endByte[38];
671.  
     fpByte[ 9] = endByte[ 6];
672.  
     fpByte[10] = endByte[46];
673.  
     fpByte[11] = endByte[14];
674.  
     fpByte[12] = endByte[54];
675.  
     fpByte[13] = endByte[22];
676.  
     fpByte[14] = endByte[62];
677.  
     fpByte[15] = endByte[30];
678.  
     fpByte[16] = endByte[37];
679.  
     fpByte[17] = endByte[ 5];
680.  
     fpByte[18] = endByte[45];
681.  
     fpByte[19] = endByte[13];
682.  
     fpByte[20] = endByte[53];
683.  
     fpByte[21] = endByte[21];
684.  
     fpByte[22] = endByte[61];
685.  
     fpByte[23] = endByte[29];
686.  
     fpByte[24] = endByte[36];
687.  
     fpByte[25] = endByte[ 4];
688.  
     fpByte[26] = endByte[44];
689.  
     fpByte[27] = endByte[12];
690.  
     fpByte[28] = endByte[52];
691.  
     fpByte[29] = endByte[20];
692.  
     fpByte[30] = endByte[60];
693.  
     fpByte[31] = endByte[28];
694.  
     fpByte[32] = endByte[35];
695.  
     fpByte[33] = endByte[ 3];
696.  
     fpByte[34] = endByte[43];
697.  
     fpByte[35] = endByte[11];
698.  
     fpByte[36] = endByte[51];
699.  
     fpByte[37] = endByte[19];
700.  
     fpByte[38] = endByte[59];
701.  
     fpByte[39] = endByte[27];
702.  
     fpByte[40] = endByte[34];
703.  
     fpByte[41] = endByte[ 2];
704.  
     fpByte[42] = endByte[42];
705.  
     fpByte[43] = endByte[10];
706.  
     fpByte[44] = endByte[50];
707.  
     fpByte[45] = endByte[18];
708.  
     fpByte[46] = endByte[58];
709.  
     fpByte[47] = endByte[26];
710.  
     fpByte[48] = endByte[33];
711.  
     fpByte[49] = endByte[ 1];
712.  
     fpByte[50] = endByte[41];
713.  
     fpByte[51] = endByte[ 9];
714.  
     fpByte[52] = endByte[49];
715.  
     fpByte[53] = endByte[17];
716.  
     fpByte[54] = endByte[57];
717.  
     fpByte[55] = endByte[25];
718.  
     fpByte[56] = endByte[32];
719.  
     fpByte[57] = endByte[ 0];
720.  
     fpByte[58] = endByte[40];
721.  
     fpByte[59] = endByte[ 8];
722.  
     fpByte[60] = endByte[48];
723.  
     fpByte[61] = endByte[16];
724.  
     fpByte[62] = endByte[56];
725.  
     fpByte[63] = endByte[24];
726.  
     return fpByte;
727.  
     }
728.  
      
729.  
     function getBoxBinary(i) {
730.  
     var binary = "";
731.  
     switch (i) {
732.  
     case 0 :binary = "0000";break;
733.  
     case 1 :binary = "0001";break;
734.  
     case 2 :binary = "0010";break;
735.  
     case 3 :binary = "0011";break;
736.  
     case 4 :binary = "0100";break;
737.  
     case 5 :binary = "0101";break;
738.  
     case 6 :binary = "0110";break;
739.  
     case 7 :binary = "0111";break;
740.  
     case 8 :binary = "1000";break;
741.  
     case 9 :binary = "1001";break;
742.  
     case 10 :binary = "1010";break;
743.  
     case 11 :binary = "1011";break;
744.  
     case 12 :binary = "1100";break;
745.  
     case 13 :binary = "1101";break;
746.  
     case 14 :binary = "1110";break;
747.  
     case 15 :binary = "1111";break;
748.  
     }
749.  
     return binary;
750.  
     }
751.  
     /*
752.  
     * generate 16 keys for xor
753.  
     *
754.  
     */
755.  
     function generateKeys(keyByte){
756.  
     var key = new Array(56);
757.  
     var keys = new Array();
758.  
      
759.  
     keys[ 0] = new Array();
760.  
     keys[ 1] = new Array();
761.  
     keys[ 2] = new Array();
762.  
     keys[ 3] = new Array();
763.  
     keys[ 4] = new Array();
764.  
     keys[ 5] = new Array();
765.  
     keys[ 6] = new Array();
766.  
     keys[ 7] = new Array();
767.  
     keys[ 8] = new Array();
768.  
     keys[ 9] = new Array();
769.  
     keys[10] = new Array();
770.  
     keys[11] = new Array();
771.  
     keys[12] = new Array();
772.  
     keys[13] = new Array();
773.  
     keys[14] = new Array();
774.  
     keys[15] = new Array();
775.  
     var loop = [1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1];
776.  
      
777.  
     for(i=0;i<7;i++){
778.  
     for(j=0,k=7;j<8;j++,k--){
779.  
     key[i*8+j]=keyByte[8*k+i];
780.  
     }
781.  
     }
782.  
      
783.  
     var i = 0;
784.  
     for(i = 0;i < 16;i ++){
785.  
     var tempLeft=0;
786.  
     var tempRight=0;
787.  
     for(j = 0; j < loop[i];j ++){
788.  
     tempLeft = key[0];
789.  
     tempRight = key[28];
790.  
     for(k = 0;k < 27 ;k ++){
791.  
     key[k] = key[k+1];
792.  
     key[28+k] = key[29+k];
793.  
     }
794.  
     key[27]=tempLeft;
795.  
     key[55]=tempRight;
796.  
     }
797.  
     var tempKey = new Array(48);
798.  
     tempKey[ 0] = key[13];
799.  
     tempKey[ 1] = key[16];
800.  
     tempKey[ 2] = key[10];
801.  
     tempKey[ 3] = key[23];
802.  
     tempKey[ 4] = key[ 0];
803.  
     tempKey[ 5] = key[ 4];
804.  
     tempKey[ 6] = key[ 2];
805.  
     tempKey[ 7] = key[27];
806.  
     tempKey[ 8] = key[14];
807.  
     tempKey[ 9] = key[ 5];
808.  
     tempKey[10] = key[20];
809.  
     tempKey[11] = key[ 9];
810.  
     tempKey[12] = key[22];
811.  
     tempKey[13] = key[18];
812.  
     tempKey[14] = key[11];
813.  
     tempKey[15] = key[ 3];
814.  
     tempKey[16] = key[25];
815.  
     tempKey[17] = key[ 7];
816.  
     tempKey[18] = key[15];
817.  
     tempKey[19] = key[ 6];
818.  
     tempKey[20] = key[26];
819.  
     tempKey[21] = key[19];
820.  
     tempKey[22] = key[12];
821.  
     tempKey[23] = key[ 1];
822.  
     tempKey[24] = key[40];
823.  
     tempKey[25] = key[51];
824.  
     tempKey[26] = key[30];
825.  
     tempKey[27] = key[36];
826.  
     tempKey[28] = key[46];
827.  
     tempKey[29] = key[54];
828.  
     tempKey[30] = key[29];
829.  
     tempKey[31] = key[39];
830.  
     tempKey[32] = key[50];
831.  
     tempKey[33] = key[44];
832.  
     tempKey[34] = key[32];
833.  
     tempKey[35] = key[47];
834.  
     tempKey[36] = key[43];
835.  
     tempKey[37] = key[48];
836.  
     tempKey[38] = key[38];
837.  
     tempKey[39] = key[55];
838.  
     tempKey[40] = key[33];
839.  
     tempKey[41] = key[52];
840.  
     tempKey[42] = key[45];
841.  
     tempKey[43] = key[41];
842.  
     tempKey[44] = key[49];
843.  
     tempKey[45] = key[35];
844.  
     tempKey[46] = key[28];
845.  
     tempKey[47] = key[31];
846.  
     switch(i){
847.  
     case 0: for(m=0;m < 48 ;m++){ keys[ 0][m] = tempKey[m]; } break;
848.  
     case 1: for(m=0;m < 48 ;m++){ keys[ 1][m] = tempKey[m]; } break;
849.  
     case 2: for(m=0;m < 48 ;m++){ keys[ 2][m] = tempKey[m]; } break;
850.  
     case 3: for(m=0;m < 48 ;m++){ keys[ 3][m] = tempKey[m]; } break;
851.  
     case 4: for(m=0;m < 48 ;m++){ keys[ 4][m] = tempKey[m]; } break;
852.  
     case 5: for(m=0;m < 48 ;m++){ keys[ 5][m] = tempKey[m]; } break;
853.  
     case 6: for(m=0;m < 48 ;m++){ keys[ 6][m] = tempKey[m]; } break;
854.  
     case 7: for(m=0;m < 48 ;m++){ keys[ 7][m] = tempKey[m]; } break;
855.  
     case 8: for(m=0;m < 48 ;m++){ keys[ 8][m] = tempKey[m]; } break;
856.  
     case 9: for(m=0;m < 48 ;m++){ keys[ 9][m] = tempKey[m]; } break;
857.  
     case 10: for(m=0;m < 48 ;m++){ keys[10][m] = tempKey[m]; } break;
858.  
     case 11: for(m=0;m < 48 ;m++){ keys[11][m] = tempKey[m]; } break;
859.  
     case 12: for(m=0;m < 48 ;m++){ keys[12][m] = tempKey[m]; } break;
860.  
     case 13: for(m=0;m < 48 ;m++){ keys[13][m] = tempKey[m]; } break;
861.  
     case 14: for(m=0;m < 48 ;m++){ keys[14][m] = tempKey[m]; } break;
862.  
     case 15: for(m=0;m < 48 ;m++){ keys[15][m] = tempKey[m]; } break;
863.  
     }
864.  
     }
865.  
     return keys;
866.  
     }