Java 卡片客户端-服务器共享接口 returns 6F00
Java Card client-server Shareable interface returns 6F00
我尝试使用 Eclipse 3.7 SDK 在 java 卡 2.2.2 中使用共享接口创建一个简单的客户端和服务器小程序。当调用方法 JCSystem.getAppletShareableInterfaceObject
时,它会抛出异常,因此 return SW 设置为 6F00。
这是客户端应用程序代码 (Test_Client.java
):
package client;
import server.Test_ServerInf;
import javacard.framework.AID;
import javacard.framework.APDU;
import javacard.framework.Applet;
import javacard.framework.ISO7816;
import javacard.framework.ISOException;
import javacard.framework.JCSystem;
public class Test_Client extends Applet {
protected static final byte INS1 = (byte)0xE2;
protected static final byte INS2 = (byte)0x21;
byte[] ServerAIDbyte={(byte)0x20,(byte)0x21,(byte)0x22,(byte)0x23,(byte)0x24,(byte)0x25,(byte)0x26,(byte)0x27,(byte)0x01};
AID ServerAID;
private Test_Client() {
}
public static void install(byte bArray[], short bOffset, byte bLength)
throws ISOException {
new Test_Client().register();
}
public void process(APDU apdu) throws ISOException {
// TODO Auto-generated method stub
byte[] apduBuffer = apdu.getBuffer();
byte Ins=apduBuffer[ISO7816.OFFSET_INS];
short byteread = apdu.setIncomingAndReceive();
if (selectingApplet())
return;
switch (Ins){
case INS1:
Ins1_Handler(apdu);
return;
case INS2:
Ins2_Handler(apdu,apduBuffer);
return;
default:
ISOException.throwIt(ISO7816.SW_FUNC_NOT_SUPPORTED);
}
}
private void Ins1_Handler(APDU apdu){
Test_ServerInf sio = null;
ServerAID=JCSystem.lookupAID(ServerAIDbyte,(short) 0,(byte) ServerAIDbyte.length);
if(ServerAID==null)
ISOException.throwIt( (short) 0x6A82);
////server request
try{
sio=(Test_ServerInf)(JCSystem.getAppletShareableInterfaceObject(ServerAID, (byte) 0));
}
catch(SecurityException e)
{
ISOException.throwIt((short)0x12);
}
catch(Exception e)
{
ISOException.throwIt((short)0x10);
}
if(sio==null)
ISOException.throwIt((short)0x6A00);
}
private void Ins2_Handler(APDU apdu,byte[] apduBuffer){
Test_ServerInf sio = null;
////connect to server
ServerAID=JCSystem.lookupAID(ServerAIDbyte,(short) 0,(byte) ServerAIDbyte.length);
if(ServerAID==null)
ISOException.throwIt( (short) 0x6A82);
////server request
try{
sio=(Test_ServerInf)(JCSystem.getAppletShareableInterfaceObject(ServerAID, (byte) 0));
}
catch(SecurityException e)
{
ISOException.throwIt((short)0x12);
}
catch(Exception e)
{
ISOException.throwIt((short)0x10);
}
if(sio==null)
ISOException.throwIt((short)0x6A00);
}
}
这是服务器小程序代码(Test_Server.java
):
package server;
import javacard.framework.APDU;
import javacard.framework.Applet;
import javacard.framework.ISOException;
import server.Test_ServerInf;
import javacard.framework.Shareable;
import javacard.framework.AID;
public class Test_Server extends Applet implements Test_ServerInf{
private Test_Server() {
}
public static void install(byte bArray[], short bOffset, byte bLength)
throws ISOException {
new Test_Server().register();
}
public void process(APDU apdu) throws ISOException {
// TODO Auto-generated method stub
}
public Shareable getShareableInterfaceObject(AID clientAID, byte parameter) {
return this;
}
public short method1(){
return (short)0x01;
}
public short method2(){
return (short)0x02;
}
}
和可共享的接口文件(Test_ServerInf.java
):
package server;
import javacard.framework.Shareable;
public interface Test_ServerInf extends Shareable {
public short method1();
public short method2();
}
您正在尝试在客户端小程序的成员字段中存储对可共享接口对象的引用 class:
sio = (Test_ServerInf)(JCSystem.getAppletShareableInterfaceObject(ServerAID, (byte) 0));
其中 sio
被定义为小程序 class 实例的私有成员:
public class Test_Client extends Applet {
private Test_ServerInf sio;
这将导致 SecurityException
,因为可共享接口对象由服务器小程序拥有(即由不同的上下文)。不允许在实例字段中存储其他上下文拥有的对象。
参见 访问 Class 实例对象字段(第 6.2.8.3 节),在 运行时环境规范,Java 卡平台,版本 2.2.2:
Bytecodes: getfield
, putfield
- [...] if the object is owned by an applet in the currently active context, access is allowed.
- Otherwise, access is denied.
我找到了这个错误的根源。我曾经使用内部开发的应用程序而不是 GPSShell 来加载和安装小程序。当我尝试使用 GPSShell 加载和安装小程序时,问题解决了,一切正常。我不知道该应用程序如何破坏加载的包,但它工作正常(调试 2 周后)。
我尝试使用 Eclipse 3.7 SDK 在 java 卡 2.2.2 中使用共享接口创建一个简单的客户端和服务器小程序。当调用方法 JCSystem.getAppletShareableInterfaceObject
时,它会抛出异常,因此 return SW 设置为 6F00。
这是客户端应用程序代码 (Test_Client.java
):
package client;
import server.Test_ServerInf;
import javacard.framework.AID;
import javacard.framework.APDU;
import javacard.framework.Applet;
import javacard.framework.ISO7816;
import javacard.framework.ISOException;
import javacard.framework.JCSystem;
public class Test_Client extends Applet {
protected static final byte INS1 = (byte)0xE2;
protected static final byte INS2 = (byte)0x21;
byte[] ServerAIDbyte={(byte)0x20,(byte)0x21,(byte)0x22,(byte)0x23,(byte)0x24,(byte)0x25,(byte)0x26,(byte)0x27,(byte)0x01};
AID ServerAID;
private Test_Client() {
}
public static void install(byte bArray[], short bOffset, byte bLength)
throws ISOException {
new Test_Client().register();
}
public void process(APDU apdu) throws ISOException {
// TODO Auto-generated method stub
byte[] apduBuffer = apdu.getBuffer();
byte Ins=apduBuffer[ISO7816.OFFSET_INS];
short byteread = apdu.setIncomingAndReceive();
if (selectingApplet())
return;
switch (Ins){
case INS1:
Ins1_Handler(apdu);
return;
case INS2:
Ins2_Handler(apdu,apduBuffer);
return;
default:
ISOException.throwIt(ISO7816.SW_FUNC_NOT_SUPPORTED);
}
}
private void Ins1_Handler(APDU apdu){
Test_ServerInf sio = null;
ServerAID=JCSystem.lookupAID(ServerAIDbyte,(short) 0,(byte) ServerAIDbyte.length);
if(ServerAID==null)
ISOException.throwIt( (short) 0x6A82);
////server request
try{
sio=(Test_ServerInf)(JCSystem.getAppletShareableInterfaceObject(ServerAID, (byte) 0));
}
catch(SecurityException e)
{
ISOException.throwIt((short)0x12);
}
catch(Exception e)
{
ISOException.throwIt((short)0x10);
}
if(sio==null)
ISOException.throwIt((short)0x6A00);
}
private void Ins2_Handler(APDU apdu,byte[] apduBuffer){
Test_ServerInf sio = null;
////connect to server
ServerAID=JCSystem.lookupAID(ServerAIDbyte,(short) 0,(byte) ServerAIDbyte.length);
if(ServerAID==null)
ISOException.throwIt( (short) 0x6A82);
////server request
try{
sio=(Test_ServerInf)(JCSystem.getAppletShareableInterfaceObject(ServerAID, (byte) 0));
}
catch(SecurityException e)
{
ISOException.throwIt((short)0x12);
}
catch(Exception e)
{
ISOException.throwIt((short)0x10);
}
if(sio==null)
ISOException.throwIt((short)0x6A00);
}
}
这是服务器小程序代码(Test_Server.java
):
package server;
import javacard.framework.APDU;
import javacard.framework.Applet;
import javacard.framework.ISOException;
import server.Test_ServerInf;
import javacard.framework.Shareable;
import javacard.framework.AID;
public class Test_Server extends Applet implements Test_ServerInf{
private Test_Server() {
}
public static void install(byte bArray[], short bOffset, byte bLength)
throws ISOException {
new Test_Server().register();
}
public void process(APDU apdu) throws ISOException {
// TODO Auto-generated method stub
}
public Shareable getShareableInterfaceObject(AID clientAID, byte parameter) {
return this;
}
public short method1(){
return (short)0x01;
}
public short method2(){
return (short)0x02;
}
}
和可共享的接口文件(Test_ServerInf.java
):
package server;
import javacard.framework.Shareable;
public interface Test_ServerInf extends Shareable {
public short method1();
public short method2();
}
您正在尝试在客户端小程序的成员字段中存储对可共享接口对象的引用 class:
sio = (Test_ServerInf)(JCSystem.getAppletShareableInterfaceObject(ServerAID, (byte) 0));
其中 sio
被定义为小程序 class 实例的私有成员:
public class Test_Client extends Applet {
private Test_ServerInf sio;
这将导致 SecurityException
,因为可共享接口对象由服务器小程序拥有(即由不同的上下文)。不允许在实例字段中存储其他上下文拥有的对象。
参见 访问 Class 实例对象字段(第 6.2.8.3 节),在 运行时环境规范,Java 卡平台,版本 2.2.2:
Bytecodes:
getfield
,putfield
- [...] if the object is owned by an applet in the currently active context, access is allowed.
- Otherwise, access is denied.
我找到了这个错误的根源。我曾经使用内部开发的应用程序而不是 GPSShell 来加载和安装小程序。当我尝试使用 GPSShell 加载和安装小程序时,问题解决了,一切正常。我不知道该应用程序如何破坏加载的包,但它工作正常(调试 2 周后)。