Re: Encripting with PBE key

Hi,

thanks a lot for all very useful hints.
Below the working code.

regards,
Krzysztof

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;

public class Test05
{
  public static void main( String args[] ) throws Exception
  {

    byte[] salt = {
            (byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
            (byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03
        };
    int iterationCount = 19;

    String password = "password";
// String password = "different password";

    PBEKeySpec keySpec = new PBEKeySpec( password.toCharArray(), salt,
iterationCount, 8 );
    System.out.println( "keySpec: " +
String.valueOf( keySpec.getPassword() ) );
    System.out.println( "keySpec: " + keySpec.getKeyLength() );

    PBEParameterSpec paramSpec = new
PBEParameterSpec( keySpec.getSalt(), keySpec.getIterationCount() );

    SecretKeyFactory keyFactory =
SecretKeyFactory.getInstance( "PBE" );
    System.out.println( "keyFactory: " + keyFactory.getAlgorithm() );

    SecretKey key = keyFactory.generateSecret( keySpec );
    System.out.println( "key: " + key.getAlgorithm() );

    Cipher cipher = Cipher.getInstance( key.getAlgorithm() );
    System.out.println( "cipher.getInstance" );

    cipher.init( Cipher.ENCRYPT_MODE, key, paramSpec );
    System.out.println( "cipher.init" );

    String sinput = "clear text";
    System.out.println( "-> " + sinput );
    byte bencrypt[] = cipher.doFinal( sinput.getBytes() );

    Cipher dcipher = Cipher.getInstance( key.getAlgorithm() );
    dcipher.init( Cipher.DECRYPT_MODE, key, paramSpec );

    byte bdecrypt[] = dcipher.doFinal( bencrypt );

    String soutput = new String( bdecrypt );
    System.out.println( "<- " + soutput );
  }
}