Ragazzi ho torvato questa classe sul web che crypta la password,vorrei eliminare il costruttore, chi mi modifica questa classe oppure mi spiega come fare?....vorrei utilizzarla senza il costruttore....
codice:
package beans;
import java.security.spec.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.io.*;
public class Crypt
{
Cipher ecipher;
Cipher dcipher;
// 8-byte Salt
byte[] salt = {(byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
(byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03
};
// Iteration count
int iterationCount = 19;
public Crypt(String passPhrase)
{
try
{
// 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 (UnsupportedEncodingException 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 (UnsupportedEncodingException e)
{
}
catch (java.io.IOException e)
{
}
return null;
}
/*
public static void main(String[] args)
{
Crypt a = new Crypt("prova");
//a.encrypt(password);
//System.out.println(Crypt("prova"));
a.encrypt("prova");
a.decrypt("prova");
}
*/
}
grazie