JS前端DES加密参数

DES加密为可解密的机制，这里使用DES进行加密方便后台解密还原参数值。本文的功能中des.js与Des.java作用相同，在不同地方产生作用。在登录的页面引入des.js文件，后台写个Des.java类，然后在登录验证前调用即可，方便易用。

jsp页面js函数与表单改造：

注意：要让表单中明文文本框不提交，只需将该文本框的name属性去掉即可。前后台加解密的三个密码字符串要一直。

<script type=>function {	   window.parent.document.getElementById().value;	   strEnc(orginName,,,);	window.parent.document.getElementById().value = newName;	   window.parent.document.getElementById(originId).value;	   strEnc(orginPass,,,);	//alert('newPass=' + newPass + ' pass='+strDec(newPass,'itmp','des','encrypt'));	window.parent.document.getElementById(decId).value = newPass;}</script><form id="form" name="form" action="${ctx}/j_spring_security_check" method="post">	<table width="100%" border="0" cellspacing="0" cellpadding="0"> 	 <tr>     	<td width="20%" height="10" class="black14" align="center" valign="middle"></td>     	<td colspan="2" align="left">        	<div class="error${param.error==true?'':'hide'}" style="color:red;">		${sessionScope['SPRING_SECURITY_LAST_EXCEPTION'].message}		</div>    	</td>    </tr>   <tr>     <td width="20%" height="35" class="black14">用户名</td>     <td colspan="2" align="left"><label >       <input type="text" id="orginName" value="${sessionScope['SPRING_SECURITY_LAST_USERNAME']}" class="input" />       <input type="hidden" id="userId" name="j_username" value="" class="input"/>     </label></td>   </tr>   <tr>     <td height="35" class="black14">密   码</td>     <td colspan="2" align="left"><label >       <input type="password" id="orginPass" class="input" onblur="setPass('orginPass','password');"/>       <input type="hidden" name="j_password" id="password" class="input"/>     </label></td>   </tr>   <tr>     <td height="35" class="black14">验证码</td>     <td width="37%" align="left"><label>       <input type="text" name="validateCode" class="input2"/>     </label></td>     <td width="43%" align="left">     	<img onclick="this.src='kaptcha.validate'" src="kaptcha.validate" width="77" height="28" />     </td>   </tr>   <tr>     <td height="93" colspan="3" align="center">     	<a href="#">     		<input type="image" src="${ctx}/css/remake/images/button_login.gif" alt="JS前端DES加密参数" width="111" height="36" border="0" />     	</a>     </td>   </tr> </table></form>

后台登录验证调用Des的解密方法进行解密

Des des = new Des();String pass=des.strDec(orginPass, 'itmp','des','encrypt');

后台加解密类Des.java代码如下：

 com.eshore.itmp.model.web.security; java.util.ArrayList; java.util.List;   {	  {	}		 String  {		 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;	}	public static void main(String[] args) {		Des desObj = new Des();		String key1 = "itmp";//des1(orginPass, "itmp", "des", "encrypt");		String key2 = "des";		String key3 = "encrypt";		String data = "1";		String str = desObj.strEnc(data, key1, key2, key3);		System.out.println(str);		String dec = desObj.strDec(str, key1, key2, key3);		System.out.println(dec);	}}

前台des.js加解密代码如下

/** 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;  }//end-------------------------------------------------------------------------------------------------------------/*从后台请求加密密码字符串*/function findDes(){	var jsonStr;	$.ajax({		//以那一种方法向服务器请求数据		type:"POST",		//向那个资源发送请求		url:"${ctx}/Login!findDesKey.do",		//处理什么类型的数据		dataType:"html",		async:false,		//根据返回数据进行什么处理		success:function(returnedData){			//判断是否禁止撤单			if(returnedData!=null || returnedData !=""){				jsonStr = eval('(' + returnedData + ')'); 			}else{				alert('des返回失败!请检查控件是否被禁用。'+jsonStr);			}   							}	});	return jsonStr;}