Java Security

Hello,

I saw that a lot of other developers have the same problem but I did not find my solution in posted messages.

I'm getting RSA encrypted data from an external device and I have to decrypt it with the private key.
Code I use to decode is the following:
------------------------------------------------------------

private String decodeCryptedData(String szData){
String szDecodedData ="";

try{
Cipher decrypt = Cipher.getInstance("RSA");
//Cipher decrypt = Cipher.getInstance("RSA/ECB/PKCS1Padding");
decrypt.init(Cipher.DECRYPT_MODE, privateKeyRSA);

byte[] decodeData= decrypt.doFinal(szData.getBytes("ISO-8859-1"));
szDecodedData = new String(decodeData, "ISO-8859-1");


}catch(Exception ex){
log.error("Exception occured in function decodeCryptedData: " + ex);
return "";
}

return szDecodedData ;

}

------------------------------------------------------------

When using this code I get the exception : javax.crypto.BadPaddingException: Data must start with zero

As you can see I tried with "RSA" an also "RSA/ECB/PKCS1Padding" but the result is always the same.
I'm now looking for a solution on internet for 8 hours but I cannot find it.
Does anyone of you has an idea?

Thanks in advance.

Alain.

null