I had an other question, but i couldn't found any response. I have two
certificates in my smartcard. How can i load the both certificates.
I tryed this code

char[] pin = smartCardPIN.toCharArray();
KeyStore keyStore = null;
try{
    keyStore = KeyStore.getInstance("PKCS11");//
}catch(Exception e){
    e.printStackTrace();
}
keyStore.load(null, pin);
Enumeration aliases = keyStore.aliases();
if (aliases.hasMoreElements()) {
    String alias = (String)aliases.nextElement();
    System.out.println("alias:"+alias);
    //getting the certificate chain and the private key
    Certificate[] certificationChain =
keyStore.getCertificateChain(alias);
    PrivateKey privateKey = (PrivateKey) keyStore.getKey(alias,
null);
    ....

}

...

But aliases enumeration has only one element, since it prints
"Signature certificate" (the alias of my signature certificate)
It seems that the other certificate is not loaded. Maybe i must
instantiate a new keystore ?
Maybe the problem (if it's a problem) is due to my pkcs11 provider. Do
you have any suggestion?
Thanks for your answers