latest problem with RSA encryption

[Original Poster]

i am having issues with decrypting sent messages .... here is the encryption code from person A ...

	RSAPublicKeySpec keySpec = new RSAPublicKeySpec(m, l);
	   KeyFactory fact = KeyFactory.getInstance("RSA");
	   pubKey = fact.generatePublic(keySpec);
	byte[] src = outputLine.getBytes();
	Cipher cipher = Cipher.getInstance("RSA");
	cipher.init(Cipher.ENCRYPT_MODE, pubKey);
	byte[] cipherData = cipher.doFinal(src);
	out.printf(new String(cipherData));

[/CODE]

and here is the [b]decryption [/b]code from person B

[CODE]
byte[] src = inputLine.getBytes();
System.out.println(src);
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, jim);
byte[] cipherData = cipher.doFinal(src);
System.out.println("Decrypted: " + new String(cipherData));
[/CODE]

all are in classes, tried and caught ... when decrypting the the sent string with private key ..i get the error "javax.crypto.BadPaddingException: Data must start with zero"

I have tried this in a seprate file from my work and all results are fine....

below is the test script that works fine.... any ideas ? ( i know not all imports are used in test code )

[CODE]
import java.awt.*;
import java.awt.RenderingHints.Key;
import java.net.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.security.InvalidKeyException;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.*;
import java.util.UUID;

public class test
{
public static void main(String arg[]) {

KeyPairGenerator kpg;
try {
kpg = KeyPairGenerator.getInstance("RSA");
kpg.initialize(2048);
KeyPair kp = kpg.genKeyPair();
PublicKey publicKey = kp.getPublic();
PrivateKey privateKey = kp.getPrivate();

KeyFactory fact = KeyFactory.getInstance("RSA");
RSAPublicKeySpec pub = fact.getKeySpec(kp.getPublic(),
RSAPublicKeySpec.class);
RSAPrivateKeySpec priv = fact.getKeySpec(kp.getPrivate(),
RSAPrivateKeySpec.class);

String bob = "hi";
byte[] src = bob.getBytes();
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] cipherData = cipher.doFinal(src);
System.out.println(new String(cipherData));


Cipher cipher1 = Cipher.getInstance("RSA");
cipher1.init(Cipher.DECRYPT_MODE, privateKey);
byte[] cipherData1 = cipher1.doFinal(cipherData);
System.out.println(new String(cipherData1));

} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvalidKeySpecException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvalidKeyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalBlockSizeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (BadPaddingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}
[/CODE]

[Original Poster]

if anyone is interested its something to do with the sent format of the string ..... it decrypted something once ... which means it happened to send a good string once haha