Troubleshooting guide

104
BlackBerry Java Development Environment Development Guide
// Using friendly display name
return new SmartCardID( idLong , ID_STRING, getSmartCard() );
}
/**
* Retrieve random data from the smart card’s internal Random Number Generator.
*/
protected byte [] getRandomBytesImpl( int maxBytes ) throws SmartCardException
{
// Create a CommandAPDU that your smart card will understand
CommandAPDU command = new CommandAPDU( (byte)0x00, (byte)0x4C, (byte)0x00,
(byte)0x00, maxBytes );
ResponseAPDU response = new ResponseAPDU();
sendAPDU( command, response );
// Check for response codes specific to your smart card
if( response.checkStatusWords( (byte)0x90, (byte)0x00 ) ) {
// The appropriate response code containing the random data
return response.getData();
}
return null;
}
/**
* Retrieve certificates from the card.
*
* @return An array of certificates which are present on the card.
*/
protected CryptoSmartCardKeyStoreData[] getKeyStoreDataArrayImpl() throws
SmartCardException, CryptoTokenException
{
try {
// Show a progress dialog to the user as this operation may take a long time.
displayProgressDialog( WAITING_MSG, 4 );
// The certificates need to be associated with a particular card.
SmartCardID smartCardID = getSmartCardID();
RSACryptoToken token = new MyRSACryptoToken();
RSACryptoSystem cryptoSystem = new RSACryptoSystem( token, 1024 );
RSAPrivateKey privateKey;
CryptoSmartCardKeyStoreData[] keyStoreDataArray = new
CryptoSmartCardKeyStoreData[ 3 ];
// This encoding would be extracted from the card using a series of APDU
commands.
Certificate certificate = null;
// Extract the certificate encoding from the card.
byte [] certificateEncoding = new byte[0];
try {
certificate = new X509Certificate( certificateEncoding ); }
catch( CertificateParsingException e ) { // invalid X509 certificate }