Blackberry Java Development Environment 4.6.0 Manuel - Sayfa 22

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Cryptographic Smart Card Driver Development Guide

return new MyRSACryptoToken();

}

throw new NoSuchAlgorithmException();

}

Code sample: Creating a cryptographic session for a

cryptographic smart card driver

Example: MyCryptoSmartCardSession.java

/**

* MyCryptoSmartCardSession.java

package com.rim.samples.device.smartcard;

import net.rim.device.api.crypto.*;

import net.rim.device.api.crypto.certificate.*;

import net.rim.device.api.crypto.certificate.x509.*;

import net.rim.device.api.crypto.keystore.*;

import net.rim.device.api.smartcard.*;

import net.rim.device.api.util.*;

/**

* This class represents a communication session with a physical smart card.

* Over this session, Application Protocol Data Units may be exchanged with the smart card

* to provide the desired functionality.

* Do not hold open sessions when not using them; they should be short-lived.

* As a security precaution, only one open session is allowed to exist per SmartCardReader;

* subsequent openSession() requests will block until the current session is closed.

public class MyCryptoSmartCardSession extends CryptoSmartCardSession

{

// We assume that the smart card has three certificates identified by: ID_PKI,

SIGNING_PKI

// and ENCRYPION_PKI. Your particular smart card may have a different number of

// certificates or be identified differently. These three certificates are merely an

example of

// what a smart card might contain.

public static final byte ID_PKI = (byte)0x00;

public static final byte SIGNING_PKI = (byte)0x01;

public static final byte ENCRYPTION_PKI = (byte)0x02;

private static final String WAITING_MSG = "Please Wait";

private static final String ID_STRING = "Jason Hood";

private static final String ID_CERT = "ID Certificate";

private static final String SIGNING_CERT = "Signing Certificate";

private static final String ENCRYPTION_CERT = "Encryption Certificate";