DES加密解密 JS-JAVA

package com.zz.test; import java.util.ArrayList; import java.util.List; public class Des { public Des() { } public static void main(String[] args) { Des desObj = new Des(); String key1 = "1"; String key2 = "2"; String key3 = "3"; String data = "admin"; String str = desObj.strEnc(data, key1, key2, key3); System.out.println(str); String dec = desObj.strDec(str, key1, key2, key3); System.out.println(dec); } /** * DES加密/解密 * * @Copyright Copyright (c) 2006 * @author Guapo * @see DESCore */ /* * encrypt the string to string made up of hex return the encrypted string */ public String strEnc(String data, String firstKey, String secondKey, String thirdKey) { int leng = data.length(); String encData = ""; List firstKeyBt = null, secondKeyBt = null, thirdKeyBt = null; int firstLength = 0, secondLength = 0, thirdLength = 0; if (firstKey != null && firstKey != "") { firstKeyBt = getKeyBytes(firstKey); firstLength = firstKeyBt.size(); } if (secondKey != null && secondKey != "") { secondKeyBt = getKeyBytes(secondKey); secondLength = secondKeyBt.size(); } if (thirdKey != null && thirdKey != "") { thirdKeyBt = getKeyBytes(thirdKey); thirdLength = thirdKeyBt.size(); } if (leng > 0) { if (leng < 4) { int[] bt = strToBt(data); int[] encByte = null; if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != "") { int[] tempBt; int x, y, z; tempBt = bt; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } for (z = 0; z < thirdLength; z++) { tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "") { int[] tempBt; int x, y; tempBt = bt; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "") { int[] tempBt; int x = 0; tempBt = bt; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } encByte = tempBt; } } } encData = bt64ToHex(encByte); } else { int iterator = (leng / 4); int remainder = leng % 4; int i = 0; for (i = 0; i < iterator; i++) { String tempData = data.substring(i * 4 + 0, i * 4 + 4); int[] tempByte = strToBt(tempData); int[] encByte = null; if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != "") { int[] tempBt; int x, y, z; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } for (z = 0; z < thirdLength; z++) { tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "") { int[] tempBt; int x, y; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "") { int[] tempBt; int x; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt .get(x)); } encByte = tempBt; } } } encData += bt64ToHex(encByte); } if (remainder > 0) { String remainderData = data.substring(iterator * 4 + 0, leng); int[] tempByte = strToBt(remainderData); int[] encByte = null; if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "" && thirdKey != null && thirdKey != "") { int[] tempBt; int x, y, z; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc(tempBt, (int[]) secondKeyBt.get(y)); } for (z = 0; z < thirdLength; z++) { tempBt = enc(tempBt, (int[]) thirdKeyBt.get(z)); } encByte = tempBt; } else { if (firstKey != null && firstKey != "" && secondKey != null && secondKey != "") { int[] tempBt; int x, y; tempBt = tempByte; for (x = 0; x < firstLength; x++) { tempBt = enc(tempBt, (int[]) firstKeyBt.get(x)); } for (y = 0; y < secondLength; y++) { tempBt = enc