run j2me code on symbian belle SDK?

[JoSmith]

hello every one

I am new in Nokia programming
and I want to make application which take a text from user and decrypt it
I have the code for decryption in j2me but I have tryed thousand of times to run on symbian belle SDK but still have errors

this is my code:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */


import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.ShortBufferException;
import org.bouncycastle.crypto.DataLengthException;
import org.bouncycastle.crypto.InvalidCipherTextException;
import org.bouncycastle.crypto.engines.AESEngine;
import org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.bouncycastle.crypto.params.KeyParameter;
import java.io.*;



/**
 *
 * @author SONY
 */
public class CrypterBC {

    //<editor-fold defaultstate="collapsed" desc="data fields">
    byte[] iBuffer = new byte[16];
    byte[] oBuffer = new byte[512];
    byte[] key = null;
    PaddedBufferedBlockCipher encCipher;
    PaddedBufferedBlockCipher decCipher;
    //</editor-fold>

    public CrypterBC() {
        key = "MALTOM_1MALTOM_2MALTOM_3".getBytes();
        Inicialization();
    }

    public CrypterBC(String inKey) {
        key = inKey.getBytes();
        Inicialization();
    }

    public CrypterBC(byte[] keyBytes) {
        key = new byte[keyBytes.length];
        System.arraycopy(keyBytes, 0, key, 0, keyBytes.length);
        Inicialization();
    }

    private void Inicialization() {
        encCipher = new PaddedBufferedBlockCipher(new AESEngine());
        encCipher.init(true, new KeyParameter(key));
        decCipher = new PaddedBufferedBlockCipher(new AESEngine());
        decCipher.init(false, new KeyParameter(key));
    }

    public void Reset() {
        if (encCipher != null) {
            encCipher.reset();
        }
        if (decCipher != null) {
            decCipher.reset();
        }
    }

    private InputStream convertStringToStream(String inRetezec) {
        InputStream vystup;
        try {
            vystup = new ByteArrayInputStream(inRetezec.getBytes("UTF-8"));
            return vystup;
        } catch (Exception e) {
            return null;
        }
    }

    /*private String convertStreamToString(OutputStream inOs) {
        String vystup;
        try {
            vystup = inOs.toString();
            return vystup;
        } catch (Exception e) {
            return e.getMessage();
        }
    }*/

    public ByteArrayOutputStream encryptStringWithAes(String inRetezec) throws ShortBufferException, IllegalBlockSizeException, BadPaddingException, DataLengthException, IllegalStateException, InvalidCipherTextException {
         InputStream is = convertStringToStream(inRetezec);
         ByteArrayOutputStream  os = new ByteArrayOutputStream();
         String vystup;
        try {
            int noBytesRead = 0;            //number of bytes read from input
            int noBytesProcessed = 0;       //number of bytes processed
            while ((noBytesRead = is.read(iBuffer)) >= 0) {
                noBytesProcessed = encCipher.processBytes(iBuffer, 0, noBytesRead, oBuffer, 0);
                //System.out.println(noBytesProcessed +" bytes processed");
                os.write(oBuffer, 0, noBytesProcessed);
            }
            noBytesProcessed = encCipher.doFinal(oBuffer, 0);
            //System.out.println(noBytesProcessed +" bytes processed");
            os.write(oBuffer, 0, noBytesProcessed);
            os.flush();
            vystup = os.toString();
            //return vystup;
            return os;}
            catch (IOException e) {
                    //return e.getMessage();
                    return null;
            }

    }

    public String decryptStringWithAes(InputStream inRetezec) throws ShortBufferException, IllegalBlockSizeException, BadPaddingException, DataLengthException, IllegalStateException, InvalidCipherTextException {

        InputStream is = inRetezec;
        OutputStream os = new ByteArrayOutputStream();

        String vystup;
        try {
            int noBytesRead = 0;        //number of bytes read from input
            int noBytesProcessed = 0;   //number of bytes processed

            while ((noBytesRead = is.read(iBuffer)) >= 0) {
                System.out.println(noBytesRead +" bytes read");
                noBytesProcessed = decCipher.processBytes(iBuffer, 0, noBytesRead, oBuffer, 0);
                System.out.println(noBytesProcessed +" bytes processed");
                os.write(oBuffer, 0, noBytesProcessed);
            }
            System.out.println(noBytesRead +" bytes read");
            noBytesProcessed = decCipher.doFinal(oBuffer, 0);
            System.out.println(noBytesProcessed +" bytes processed");
            os.write(oBuffer, 0, noBytesProcessed);

            os.flush();
            vystup = new String(os.toString());
            return vystup;
        } catch (java.io.IOException e) {
            return e.getMessage();
        }
    }
    
}

how can I run it on the emiolator? and can I use normal java or specialy JCE in programming a nokia s60 devices?
I will be very appreciated if someone can help me

[r2j7]

Hello JoSmith,

to start with JCE development including SATSA-CRYPTO, you might want to check this resource on Java Developer's Library:

Java Developer's Library 3.11 > Developer's guides > Security > Security and trust services > Encrypted messages: SATSA-CRYPTO > Using SATSA-CRYPTO

http://library.developer.nokia.com/i...D0DE116F8.html

Regards,
r2j7