package com.snowcattle.game.common.util; import java.security.spec.AlgorithmParameterSpec; import java.security.spec.KeySpec; import javax.crypto.Cipher; import javax.crypto.IllegalBlockSizeException; import javax.crypto.SecretKey; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.PBEKeySpec; import javax.crypto.spec.PBEParameterSpec; public class DesEncrypter { Cipher ecipher; Cipher dcipher; // 8-byte Salt byte[] salt = { (byte) 0xB9, (byte) 0xAB, (byte) 0xD8, (byte) 0x42, (byte) 0x66, (byte) 0x45, (byte) 0xF3, (byte) 0x13 }; // Iteration count int iterationCount = 17; public DesEncrypter(String passPhrase) { this(passPhrase, null); } public DesEncrypter(String passPhrase, byte[] newSalt) { try { if (newSalt != null) { salt = newSalt; } // Create the key KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount); SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec); ecipher = Cipher.getInstance(key.getAlgorithm()); dcipher = Cipher.getInstance(key.getAlgorithm()); // Prepare the parameter to the ciphers AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount); // Create the ciphers ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec); dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec); } catch (java.security.InvalidAlgorithmParameterException e) { } catch (java.security.spec.InvalidKeySpecException e) { } catch (javax.crypto.NoSuchPaddingException e) { } catch (java.security.NoSuchAlgorithmException e) { } catch (java.security.InvalidKeyException e) { } } public String encrypt(String str) { try { // Encode the string into bytes using utf-8 byte[] utf8 = str.getBytes("UTF8"); // Encrypt byte[] enc = ecipher.doFinal(utf8); // Encode bytes to base64 to get a string return new sun.misc.BASE64Encoder().encode(enc); } catch (javax.crypto.BadPaddingException e) { } catch (IllegalBlockSizeException e) { } catch (java.io.IOException e) { } return null; } public String decrypt(String str) { try { // Decode base64 to get bytes byte[] dec = new sun.misc.BASE64Decoder().decodeBuffer(str); // Decrypt byte[] utf8 = dcipher.doFinal(dec); // Decode using utf-8 return new String(utf8, "UTF8"); } catch (javax.crypto.BadPaddingException e) { } catch (IllegalBlockSizeException e) { } catch (java.io.IOException e) { } return null; } // private static DesEncrypter encrypter = new DesEncrypter("4DP2bC5r", // new byte[]{(byte)0x62, (byte)0xB1, (byte)0x35, (byte)0xF8, (byte)0xC6, (byte)0x5A, (byte)0x44, (byte)0xE2}); // // public static String encodeToken(long accountId, String ip, long timestamp, String name){ // return encrypter.encrypt(accountId+","+ip+","+timestamp+","+name); // } // // // 根据Token结出account和时间戳 // public static String decodeToken(String token){ // return encrypter.decrypt(token); // } public static void main(String[] args){ // String token = encodeToken(1001, "127.0.0.1", System.currentTimeMillis(), "jackflit"); // String msg = decodeToken(token); // System.out.println(msg); // DesEncrypter encrypter = new DesEncrypter("4DP2bC5r"); // String message = "lool"; // String msg = encrypter.encrypt(message); // System.out.println(msg); // String msg2 = encrypter.decrypt(msg); // System.out.println(msg2); } }