DbVisualizer 加密密码解密

DbVisualizer 保存的链接信息存储在用户目录的 ".dbvis/config70/dbvis.xml" 中，其中密码是通过加密处理的。因为DbVisualizer 是由java开发的，咱们能够很方便地对其进行反编译，获得他的加/解密方法并恢复数据库密码

如下是加解密程序源代码：

 

  1 import java.io.UnsupportedEncodingException;
  2 import java.security.GeneralSecurityException;
  3 import java.security.spec.AlgorithmParameterSpec;
  4 
  5 import javax.crypto.Cipher;
  6 import javax.crypto.SecretKey;
  7 import javax.crypto.SecretKeyFactory;
  8 import javax.crypto.spec.PBEKeySpec;
  9 import javax.crypto.spec.PBEParameterSpec;
 10 
 11 
 12 import com.sun.org.apache.xml.internal.security.utils.Base64;
 13 
 14 public class Test {
 15 
 16     public static void main(String args[]) throws GeneralSecurityException {
 17 
 18         System.out.println(encrypt("password", "qinda")); //qinda是在源码中发现的key
 19         System.out.println(decrypt("AK+fe8JpLKE2kLaW6+Z31g==", "qinda"));
 20     }
 21 
 22     public static String encrypt(String paramString1, String paramString2)
 23             throws GeneralSecurityException {
 24         return encrypt(paramString1, paramString2, "8859_1");
 25     }
 26 
 27     private static Cipher getCipher(String paramString, SecretKey paramSecretKey,
 28             AlgorithmParameterSpec paramAlgorithmParameterSpec, int paramInt)
 29             throws GeneralSecurityException {
 30         String str = "";
 31 
 32         Cipher localCipher = null;
 33         try {
 34             str = str + " , getting encrypt cipher";
 35 
 36             localCipher = Cipher.getInstance(paramString);
 37 
 38             str = str + " , initializing cipher";
 39 
 40             localCipher.init(paramInt, paramSecretKey,
 41                     paramAlgorithmParameterSpec);
 42         } catch (GeneralSecurityException localGeneralSecurityException) {
 43             localGeneralSecurityException.printStackTrace();
 44         }
 45         return localCipher;
 46     }
 47 
 48     private static Cipher getCipher(String paramString, int paramInt)
 49             throws GeneralSecurityException {
 50         Cipher localCipher = null;
 51 
 52         SecretKey localSecretKey = getSecretKey(paramString);
 53 
 54         byte[] arrayOfByte = { -114, 18, 57, -100, 7, 114, 111, 90 };
 55 
 56         PBEParameterSpec localPBEParameterSpec = new PBEParameterSpec(
 57                 arrayOfByte, 10);
 58 
 59         String str = "PBEWithMD5AndDES";
 60 
 61         localCipher = getCipher(str, localSecretKey, localPBEParameterSpec, paramInt);
 62 
 63         return localCipher;
 64     }
 65 
 66     private static SecretKey getSecretKey(String paramString)
 67             throws GeneralSecurityException {
 68         SecretKey localSecretKey = null;
 69         try {
 70             PBEKeySpec localPBEKeySpec = new PBEKeySpec(
 71                     paramString.toCharArray());
 72 
 73             SecretKeyFactory localSecretKeyFactory = SecretKeyFactory
 74                     .getInstance("PBEWithMD5AndDES");
 75 
 76             localSecretKey = localSecretKeyFactory
 77                     .generateSecret(localPBEKeySpec);
 78         } catch (GeneralSecurityException localGeneralSecurityException) {
 79 
 80         }
 81         return localSecretKey;
 82     }
 83 
 84     public static String encrypt(String paramString1, String paramString2,
 85             String paramString3) throws GeneralSecurityException {
 86         Cipher localCipher = getCipher(paramString2, 1);
 87         try {
 88             byte[] arrayOfByte1 = paramString1.getBytes(paramString3);
 89 
 90             byte[] arrayOfByte2 = Base64.encode(
 91                     localCipher.doFinal(arrayOfByte1)).getBytes();
 92 
 93             return new String(arrayOfByte2, paramString3);
 94 
 95         } catch (UnsupportedEncodingException localUnsupportedEncodingException) {
 96 
 97         }
 98         return null;
 99     }
100 
101     public static String decrypt(String text, String key)
102             throws GeneralSecurityException {
103         return decrypt(text, key, "8859_1");
104     }
105 
106     public static String decrypt(String encrptedText, String key, String encoding)
107             throws GeneralSecurityException {
108         Cipher localCipher = getCipher(key, 2);
109         try {
110             byte[] arrayOfByte1 = encrptedText.getBytes(encoding);
111 
112             byte[] arrayOfByte2 = Base64.decode((arrayOfByte1));
113 
114             byte[] arrayOfByte3 = localCipher.doFinal(arrayOfByte2);
115 
116             return new String(arrayOfByte3, encoding);
117         } catch (Exception e) {
118             e.printStackTrace();
119         }
120 
121         return null;
122     }
123 }