Blackberry JAVA DEVELOPMENT ENVIRONMENT - - CRYPTOGRAPHIC SMART CARD DRIVER - DEVELOPMENT GUIDE Handmatig - Pagina 12

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Cryptographic Smart Card Driver Development Guide

Task

Enable signing of unprocessed data.

See "Code sample: Enabling a CryptoToken object for RSA operations using a private key" on page 24 for more

information.

Store the location of the private key file

Even though the private key file is stored on the smart card, the BlackBerry device needs to know that a private key

file exists for a certificate. A class that implements the

pointer to a private key file on the smart card.

Task

Store the location of the private key file on

the smart card.

Associate the implementing class object

with the smart card that contains the

private key file.

Retrieve the ID of the smart card.

Steps

Perform one of the following steps:

•

To create a cryptographic smart card driver that is compatible with BlackBerry Device

Software Version 4.2 or later, create a method that signs unprocessed data, for example:

public void signRSA(RSACryptoSystem cryptoSystem,

CryptoTokenPrivateKeyData privateKeyData, byte[] input, int

inputOffset,byte[] output, int outputOffset)

throws CryptoTokenException, CryptoUnsupportedOperationException

{

signDecryptHelper(cryptoSystem, privateKeyData, input, inputOffset,

output, outputOffset, SIGN_DESC, SmartCardSession.SIGN_OPERATION);

}

•

To create a cryptographic smart card driver that is compatible with BlackBerry Device

Software Version 4.1 and Version 4.2 or later, and to include the cryptographic smart card

driver in two-factor authentication, create a method that signs unprocessed data, for example:

public void signRSASmartCardImpl (CryptoSystem cryptoSystem,

CryptoTokenPrivateKeyData privateKeyData, byte[] input,int

inputOffset, byte[] output, int outputOffset)

CryptoTokenPrivateKeyData

Steps

CryptoTokenPrivateKeyData

Implement the

1. Create an instance variable for storing the smart card ID.

private SmartCardID _id;

2. Create an instance variable for storing the location of the private key file on the smart card.

private byte _file;

3. Create a constructor that associates an object from the class that implements a

PrivateKeyData

interface with the smart card.

public MyCryptoTokenData(SmartCardID id, byte file)

{

_id = id;

_file = file;

}

Create a method that returns the

public SmartCardID getSmartCardID()

{

return _id;

}

interface can act as a

interface.

SmartCardID

instance variable.