Invalid signature value under java 1.5.0_10 and PKCS11

Question

Hi!
I have a problem with my GemSafe "Smart Card" and Java 1.5. I've developed a program that signs a document, every thing seems to be fine, but when I try to verify the signature a "Signature encoding error" is thrown. If we change the line:
Signature verify = Signature.getInstance("SHA1withRSA");using:
Signature verify = Signature.getInstance("SHA1withRSA", pkcs11Provider);The verification status is "OK"! But it has no sense to use that provider in the server!
What's wrong? I cannot continue :'(
Many thanks.
Here is the sample code:
import java.io.*;
import java.util.*;
import java.security.*;
import java.security.cert.*;
public class PatoFirma {
    public static void main (String args[]) {
        try {
            PatoFirma pf=new PatoFirma ();
            pf.go();
        catch (Exception ex) {
            ex.printStackTrace();
    public void go () throws Exception {
        // Provider.
        Provider pkcs11Provider = new sun.security.pkcs11.SunPKCS11("c:/cardConfig.txt");
        // Access to the smart card.
        char[] pin = "1234".toCharArray();
        KeyStore keyStore = KeyStore.getInstance("PKCS11", pkcs11Provider);
        keyStore.load(null, pin);
        // Get the first alias in the smart card.
        Enumeration aliasesEnum = keyStore.aliases();
        String alias = (String) aliasesEnum.nextElement();
        // Use this sample doc:
        byte[] doc = "pato".getBytes();
        // Sign.
        Signature signatureAlgorithm = Signature.getInstance("SHA1withRSA", pkcs11Provider);
        signatureAlgorithm.initSign((PrivateKey) keyStore.getKey(alias, null));
        signatureAlgorithm.update(doc);
        byte[] digitalSignature = signatureAlgorithm.sign();
        // Verify.
        Signature verify = Signature.getInstance("SHA1withRSA");
        verify.initVerify(keyStore.getCertificate(alias));
        verify.update(doc);
        boolean flag = verify.verify(digitalSignature);
        System.out.println("-->" + (flag ? "TRUE":"FALSE"));
}

Answer 1

hi!
I have nearly the same problem.
maybe you can help me.
public boolean verify1(byte[] text, byte[] mySignature, RSAPublicKey key){
          try {
          Signature sig = Signature.getInstance("SHA1withRSA");
          sig.initVerify(key);
// calculate the hash of a data I've signed
          String Hash = ComputeHash.getHash(text);
          sig.update(Hash.getBytes(),0,Hash.getBytes().length);
          return sig.verify(mySignature);
          }catch ( NoSuchAlgorithmException e){
          return false;
          catch (InvalidKeyException e){
          return false;
          catch (SignatureException e){
          return false;
     }Any ideas?!?
thanks, Robert