本示例使用的发卡器：https://item.taobao.com/item.htm?spm=a21dvs.23580594.0.0.3edc645eGJtux3&ft=t&id=615391857885

Desfire EV1 EV2 EV3卡说明：

1. AID:000000为PICC主应用，在主应用下EV1卡可以随意更改加解密方法，EV2/EV3卡从DES改为3K3DES/AES后不能再改回DES(返回917E的提示)；
2. 新出厂的卡片PICC 0号主控密钥为8字节的DES密钥，密钥为 00 00 00 00 00 00 00 00；
3. 新创建的2K3DES、AES密钥16字节 ，密钥为 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00；
4. 新创建的3K3DES 密钥24字节 ，密钥为 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00；
5. 在非主应用下加解密方法是在创建应用时指定的，不能更改(返回911E或917E)。

一、加载发卡器驱动库 

//本示例可在windows、linux系统内编译、运行
//判断windows、linux系统，声明动态库函数----------------------------------------------------------------------------------------------------------------------------------------------
//让读写器发出声音
typedef  unsigned char (*pcdbeep)(unsigned long xms);
#ifdef Q_OS_WIN
    pcdbeep mypcdbeep = (pcdbeep)QLibrary("OUR_MIFARE.dll").resolve("pcdbeep");
#else
    pcdbeep mypcdbeep = (pcdbeep)QLibrary("./libOURMIFARE.so").resolve("pcdbeep");
#endif

//返回本读写器独一无二的设备编号
typedef  unsigned char (*pcdgetdevicenumber)(unsigned char *devicenumber);
#ifdef Q_OS_WIN
    pcdgetdevicenumber mypcdgetdevicenumber = (pcdgetdevicenumber)QLibrary("OUR_MIFARE.dll").resolve("pcdgetdevicenumber");
#else
    pcdgetdevicenumber mypcdgetdevicenumber = (pcdgetdevicenumber)QLibrary("./libOURMIFARE.so").resolve("pcdgetdevicenumber");
#endif

//获取IC卡芯片型号
typedef  unsigned char (*getmifareversion)(unsigned char *cardtypebuf,unsigned char *AtqaSak,unsigned char *versionbuf,unsigned char *versionlen,unsigned char *retsw);
#ifdef Q_OS_WIN
    getmifareversion mygetmifareversion = (getmifareversion)QLibrary("OUR_MIFARE.dll").resolve("getmifareversion");
#else
    getmifareversion mygetmifareversion = (getmifareversion)QLibrary("./libOURMIFARE.so").resolve("getmifareversion");
#endif

//激活发卡器上的desfire卡
typedef  unsigned char (*cpurequest1)(unsigned char *mypiccserial,unsigned char *myparam,unsigned char *myver,unsigned char *mycode,unsigned char *AtqaSak);
#ifdef Q_OS_WIN
    cpurequest1 mycpurequest1 = (cpurequest1)QLibrary("OUR_MIFARE.dll").resolve("cpurequest1");
#else
    cpurequest1 mycpurequest1 = (cpurequest1)QLibrary("./libOURMIFARE.so").resolve("cpurequest1");
#endif

//选择卡内已有的应用
typedef  unsigned char (*desfireselectapplication)(unsigned char *aidbuf,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfireselectapplication mydesfireselectapplication = (desfireselectapplication)QLibrary("OUR_MIFARE.dll").resolve("desfireselectapplication");
#else
    desfireselectapplication mydesfireselectapplication = (desfireselectapplication)QLibrary("./libOURMIFARE.so").resolve("desfireselectapplication");
#endif

//EV1EV2EV3卡密钥认证
typedef  unsigned char (*desfireauthkeyev1)(unsigned char *keybuf,unsigned char keyid,unsigned char authmode,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfireauthkeyev1 mydesfireauthkeyev1 = (desfireauthkeyev1)QLibrary("OUR_MIFARE.dll").resolve("desfireauthkeyev1");
#else
    desfireauthkeyev1 mydesfireauthkeyev1 = (desfireauthkeyev1)QLibrary("./libOURMIFARE.so").resolve("desfireauthkeyev1");
#endif

//更改密钥
typedef  unsigned char (*desfirechangekeyev1)(unsigned char *newkeybuf,unsigned char keyid,unsigned char authmode,unsigned char zeno,unsigned char *oldkeybuf,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfirechangekeyev1 mydesfirechangekeyev1 = (desfirechangekeyev1)QLibrary("OUR_MIFARE.dll").resolve("desfirechangekeyev1");
#else
    desfirechangekeyev1 mydesfirechangekeyev1 = (desfirechangekeyev1)QLibrary("./libOURMIFARE.so").resolve("desfirechangekeyev1");
#endif

//EV2EV3卡密钥认证
typedef  unsigned char (*desfireauthkeyev2)(unsigned char *keybuf,unsigned char keyid,unsigned char authmode,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfireauthkeyev2 mydesfireauthkeyev2 = (desfireauthkeyev2)QLibrary("OUR_MIFARE.dll").resolve("desfireauthkeyev2");
#else
    desfireauthkeyev2 mydesfireauthkeyev2 = (desfireauthkeyev2)QLibrary("./libOURMIFARE.so").resolve("desfireauthkeyev2");
#endif

//读取PICC密钥配置信息
typedef  unsigned char (*desfiregetkeysettings)(unsigned char *aidbuf,unsigned char *keysetting,unsigned char *keysize,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfiregetkeysettings mydesfiregetkeysettings = (desfiregetkeysettings)QLibrary("OUR_MIFARE.dll").resolve("desfiregetkeysettings");
#else
    desfiregetkeysettings mydesfiregetkeysettings = (desfiregetkeysettings)QLibrary("./libOURMIFARE.so").resolve("desfiregetkeysettings");
#endif

//更改PICC主密钥配置
typedef  unsigned char (*desfirechangekeysettings)(unsigned char *aidbuf,unsigned char keysetting,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfirechangekeysettings mydesfirechangekeysettings = (desfirechangekeysettings)QLibrary("OUR_MIFARE.dll").resolve("desfirechangekeysettings");
#else
    desfirechangekeysettings mydesfirechangekeysettings = (desfirechangekeysettings)QLibrary("./libOURMIFARE.so").resolve("desfirechangekeysettings");
#endif

//初始格式化卡片
typedef  unsigned char (*desfireformatpicc)(unsigned char *retsw);
#ifdef Q_OS_WIN
    desfireformatpicc mydesfireformatpicc = (desfireformatpicc)QLibrary("OUR_MIFARE.dll").resolve("desfireformatpicc");
#else
    desfireformatpicc mydesfireformatpicc = (desfireformatpicc)QLibrary("./libOURMIFARE.so").resolve("desfireformatpicc");
#endif

//搜索PICC内所有应用aid
typedef  unsigned char (*desfiregetapplicationids)(unsigned char *aidbuf,unsigned char *aidsize,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfiregetapplicationids mydesfiregetapplicationids = (desfiregetapplicationids)QLibrary("OUR_MIFARE.dll").resolve("desfiregetapplicationids");
#else
    desfiregetapplicationids mydesfiregetapplicationids = (desfiregetapplicationids)QLibrary("./libOURMIFARE.so").resolve("desfiregetapplicationids");
#endif

//创建新应用
typedef  unsigned char (*desfirecreateapplication)(unsigned char *aidbuf,unsigned char keysetting,unsigned char keynumber,unsigned char keymode,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfirecreateapplication mydesfirecreateapplication = (desfirecreateapplication)QLibrary("OUR_MIFARE.dll").resolve("desfirecreateapplication");
#else
    desfirecreateapplication mydesfirecreateapplication = (desfirecreateapplication)QLibrary("./libOURMIFARE.so").resolve("desfirecreateapplication");
#endif

//删除应用
typedef  unsigned char (*desfiredeleteapplication)(unsigned char *aidbuf,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfiredeleteapplication mydesfiredeleteapplication = (desfiredeleteapplication)QLibrary("OUR_MIFARE.dll").resolve("desfiredeleteapplication");
#else
    desfiredeleteapplication mydesfiredeleteapplication = (desfiredeleteapplication)QLibrary("./libOURMIFARE.so").resolve("desfiredeleteapplication");
#endif

//搜索当前应用内所有文件fid
typedef  unsigned char (*desfiregetfileids)(unsigned char *fidbuf,unsigned char *fidsize,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfiregetfileids mydesfiregetfileids = (desfiregetfileids)QLibrary("OUR_MIFARE.dll").resolve("desfiregetfileids");
#else
    desfiregetfileids mydesfiregetfileids = (desfiregetfileids)QLibrary("./libOURMIFARE.so").resolve("desfiregetfileids");
#endif

//在应用内创建标准文件
typedef  unsigned char (*desfirecreatestddatafile)(unsigned char fidbuf,unsigned char comset,unsigned char *accessrights,unsigned char filesize,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfirecreatestddatafile mydesfirecreatestddatafile = (desfirecreatestddatafile)QLibrary("OUR_MIFARE.dll").resolve("desfirecreatestddatafile");
#else
    desfirecreatestddatafile mydesfirecreatestddatafile = (desfirecreatestddatafile)QLibrary("./libOURMIFARE.so").resolve("desfirecreatestddatafile");
#endif

//在应用内创建备份文件
typedef  unsigned char (*desfircreatebackupdatafile)(unsigned char fidbuf,unsigned char comset,unsigned char *accessrights,unsigned char filesize,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfircreatebackupdatafile mydesfircreatebackupdatafile = (desfircreatebackupdatafile)QLibrary("OUR_MIFARE.dll").resolve("desfircreatebackupdatafile");
#else
    desfircreatebackupdatafile mydesfircreatebackupdatafile = (desfircreatebackupdatafile)QLibrary("./libOURMIFARE.so").resolve("desfircreatebackupdatafile");
#endif

//读取文件密钥配置信息
typedef  unsigned char (*desfiregetfilesettings)(unsigned char fileid,unsigned char *filesettingsbuf,unsigned char *revbuflen,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfiregetfilesettings mydesfiregetfilesettings = (desfiregetfilesettings)QLibrary("OUR_MIFARE.dll").resolve("desfiregetfilesettings");
#else
    desfiregetfilesettings mydesfiregetfilesettings = (desfiregetfilesettings)QLibrary("./libOURMIFARE.so").resolve("desfiregetfilesettings");
#endif

//更改文件密钥配置信息
typedef  unsigned char (*desfirechangefilesettings)(unsigned char fileid,unsigned char comset,unsigned char *accessrights,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfirechangefilesettings mydesfirechangefilesettings = (desfirechangefilesettings)QLibrary("OUR_MIFARE.dll").resolve("desfirechangefilesettings");
#else
    desfirechangefilesettings mydesfirechangefilesettings = (desfirechangefilesettings)QLibrary("./libOURMIFARE.so").resolve("desfirechangefilesettings");
#endif

//删除应用内的文件
typedef  unsigned char (*desfiredeletefile)(unsigned char fileid,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfiredeletefile mydesfiredeletefile = (desfiredeletefile)QLibrary("OUR_MIFARE.dll").resolve("desfiredeletefile");
#else
    desfiredeletefile mydesfiredeletefile = (desfiredeletefile)QLibrary("./libOURMIFARE.so").resolve("desfiredeletefile");
#endif

//读文件
typedef  unsigned char (*desfirereaddata)(unsigned char cmd,unsigned char fileid,int rwbegin,int rwlen,unsigned char *databuf,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfirereaddata mydesfirereaddata = (desfirereaddata)QLibrary("OUR_MIFARE.dll").resolve("desfirereaddata");
#else
    desfirereaddata mydesfirereaddata = (desfirereaddata)QLibrary("./libOURMIFARE.so").resolve("desfirereaddata");
#endif

//写文件
typedef  unsigned char (*desfirewritedata)(unsigned char cmd,unsigned char fileid,int rwbegin,int rwlen,unsigned char *databuf,unsigned char *retsw);
#ifdef Q_OS_WIN
    desfirewritedata mydesfirewritedata = (desfirewritedata)QLibrary("OUR_MIFARE.dll").resolve("desfirewritedata");
#else
    desfirewritedata mydesfirewritedata = (desfirewritedata)QLibrary("./libOURMIFARE.so").resolve("desfirewritedata");
#endif

//提交事务使备份生效
typedef  unsigned char (*desfirecommittransaction)(unsigned char *retsw);
#ifdef Q_OS_WIN
    desfirecommittransaction mydesfirecommittransaction = (desfirecommittransaction)QLibrary("OUR_MIFARE.dll").resolve("desfirecommittransaction");
#else
    desfirecommittransaction mydesfirecommittransaction = (desfirecommittransaction)QLibrary("./libOURMIFARE.so").resolve("desfirecommittransaction");
#endif

//取消事务
typedef  unsigned char (*desfireaborttransaction)(unsigned char *retsw);
#ifdef Q_OS_WIN
    desfireaborttransaction mydesfireaborttransaction = (desfireaborttransaction)QLibrary("OUR_MIFARE.dll").resolve("desfireaborttransaction");
#else
    desfireaborttransaction mydesfireaborttransaction = (desfireaborttransaction)QLibrary("./libOURMIFARE.so").resolve("desfireaborttransaction");
#endif

 二、激活发卡器上的Desfire卡

void MainWindow::on_pushButton_request_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在    
    if (mycpurequest1 != NULL){
        unsigned char AtqaSak[3];
        unsigned char mycode[2];
        unsigned char myver[2];
        unsigned char myparam[4];
        unsigned char mypiccserial[7];
        unsigned char status =mycpurequest1(mypiccserial, myparam, myver, mycode, AtqaSak);
        if(status==0  || status==52){
            mypcdbeep(30);
            QString parastr=QString::asprintf("%02X%02X%02X%02X", myparam[0], myparam[1], myparam[2], myparam[3]);
            QString verstr=QString::asprintf("%02X", myver[0]);
            QString codestr=QString::asprintf("%02X", mycode[0]);
            QString cardhohex="";
            if(AtqaSak[0] / 64>0){                
                for (int i=0;i<7;i++){cardhohex=cardhohex+QString::asprintf("%02X",mypiccserial[i]);}
                ui->lineEdit_uid->setText(cardhohex);
                QMessageBox::information(NULL, "提示", "激活Desfire卡成功，可以接着重复操作第二步进行调试了。\r\n16进制卡号：" + cardhohex+"\n芯片参数："+parastr+"\n版本信息："+verstr+"\n厂商代码："+codestr);
            }else{
                for (int i=0;i<4;i++){cardhohex=cardhohex+QString::asprintf("%02X",mypiccserial[i]);}
                ui->lineEdit_uid->setText(cardhohex);
                QMessageBox::information(NULL, "提示", "激活Fm1208CPU卡成功，可以接着重复操作第二步进行调试了。\r\n16进制卡号：" + cardhohex+"\n芯片参数："+parastr+"\n版本信息："+verstr+"\n厂商代码："+codestr);
            }
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘cpurequest1’未正确载入，请查询DLL文件版本是否正确！");
    }
}

三、选择卡内已有的APP应用AID 

void MainWindow::on_pushButton_selectapp_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfireselectapplication != NULL){
        QString aidstr=ui->lineEdit_aid->text().trimmed();
        unsigned char aidbuf[3];
        int checkbuflen=checkhexdata(aidstr,aidbuf);
        if (checkbuflen!=3){
            QMessageBox::critical(NULL, "提示", "AID输入错误，请输入3字节16进制AID!！");
            ui->lineEdit_aid->setFocus();
            return;
        }
        unsigned char retsw[2];     //卡操作返回代码
        unsigned char status =mydesfireselectapplication(aidbuf, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "选择卡内应用AID操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("选择卡内应用AID操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfireselectapplication’未正确载入，请查询DLL文件版本是否正确！");
    }
}

四、密钥认证

void MainWindow::on_pushButton_authkeyev1_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfireauthkeyev1 != NULL){
        int oldkeylen;
        switch(ui->comboBox_ev123keymode->currentIndex()){
        case 0:
            oldkeylen=8;
            break;
        case 1:
            oldkeylen=16;
            break;
        case 2:
            oldkeylen=24;
            break;
        default:
            oldkeylen=16;
        }

        unsigned char authkeybuf[24];
        QString authkeystr=ui->lineEdit_ev123oldkey->text().trimmed();
        int checkbuflen=checkhexdata(authkeystr,authkeybuf);
        if (checkbuflen!=oldkeylen){
            QMessageBox::critical(NULL, "提示", QString::asprintf("十六进制认证密钥输入错误，请输入 %d", oldkeylen)+  " 字节的16进制认证密钥！");
            ui->lineEdit_ev123oldkey->setFocus();
            return;
        }
        unsigned char keyid=ui->spinBox_keyid->value();
        unsigned char keymode=ui->comboBox_ev123keymode->currentIndex();
        unsigned char retsw[2];     //卡操作返回代码
        unsigned char status =mydesfireauthkeyev1(authkeybuf,keyid, keymode,retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "认证密码操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("选认证密码操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfireauthkeyev1’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 五、更改密钥

void MainWindow::on_pushButton_changekey_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfirechangekeyev1 != NULL){
        int keylen;
        switch(ui->comboBox_newkeymode->currentIndex()){
        case 0:
            keylen=8;
            break;
        case 1:
            keylen=16;
            break;
        case 2:
            keylen=24;
            break;
        default:
            keylen=16;
        }

        unsigned char newkeybuf[24];
        QString newkeystr=ui->lineEdit_newkey->text().trimmed();
        int checkbuflen=checkhexdata(newkeystr,newkeybuf);
        if (checkbuflen!=keylen){
            QMessageBox::critical(NULL, "提示", QString::asprintf("十六进制新密钥输入错误，请输入 %d", keylen)+  " 字节的16进制新密钥！");
            ui->lineEdit_newkey->setFocus();
            return;
        }

        unsigned char oldkeybuf[24];
        QString oldkeystr=ui->lineEdit_ev123oldkey->text().trimmed();
        checkbuflen=checkhexdata(oldkeystr,oldkeybuf);
        if (checkbuflen!=keylen){
            QMessageBox::critical(NULL, "提示", QString::asprintf("十六进制旧密钥输入错误，请输入 %d", keylen)+  " 字节的16进制旧密钥！");
            ui->lineEdit_ev123oldkey->setFocus();
            return;
        }
        unsigned char keyid=ui->spinBox_keyid->value();
        unsigned char keymode=ui->comboBox_newkeymode->currentIndex();
        unsigned char retsw[2];     //卡操作返回代码
        unsigned char status =mydesfirechangekeyev1(newkeybuf, keyid, keymode,0,oldkeybuf, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "更改密码操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("更改密码操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfirechangekeyev1’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 六、获取PICC主控密钥配置信息

void MainWindow::on_pushButton_getpicckeyset_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfiregetkeysettings != NULL){
        unsigned char aidbuf[3];
        unsigned char keysetting[1];
        unsigned char keysize[1];
        unsigned char retsw[2];     //卡操作返回代码

        for (int i=0;i<3;i++){aidbuf[i]=0x00;}  //aid为000000时表示PICC
        unsigned char status =mydesfiregetkeysettings(aidbuf, keysetting, keysize, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            if (keysetting[0] & 8>0){
                ui->comboBox_picckeyset1->setCurrentIndex(1);
            }else{ui->comboBox_picckeyset1->setCurrentIndex(0);}
            if (keysetting[0] & 4>0){
                ui->comboBox_picckeyset2->setCurrentIndex(1);
            }else{ui->comboBox_picckeyset2->setCurrentIndex(0);}
            if (keysetting[0] & 2>0){
                ui->comboBox_picckeyset3->setCurrentIndex(1);
            }else{ui->comboBox_picckeyset3->setCurrentIndex(0);}
            if (keysetting[0] & 1>0){
                ui->comboBox_picckeyset4->setCurrentIndex(1);
            }else{ui->comboBox_picckeyset4->setCurrentIndex(0);}
            int keynum=keysize[0] % 64;
            QString keymodestr;
            if (keysize[0] & 0xC0 == 0x80){
                keymodestr="AES";
            }else{
                if (keysize[0] & 0xC0 == 0x40){
                    keymodestr = "3K3DES";
                }else{keymodestr = "DES 或 2K3DES";}
            }
            QMessageBox::information(NULL, "提示", "读取PICC主密钥配置信息操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr)+QString::asprintf("\n密钥配置：%02X", keysetting[0])+QString::asprintf("\n密钥数量：%d",keynum)+"\n加密方式："+keymodestr);
        }else{
            if (status==94){
                QMessageBox::information(NULL, "提示", "请先执行选择AID为：000000 的PICC级应用!" );
                ui->lineEdit_aid->setText("00 00 00");
            }else{
                QMessageBox::critical(NULL, "提示", QString::asprintf("读取PICC主密钥配置信息操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
            }
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfiregetkeysettings’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 七、更改PICC主控密钥配置

void MainWindow::on_pushButton_changepicckeyset_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfirechangekeysettings != NULL){
        unsigned char aidbuf[3];
        unsigned char keysetting=ui->comboBox_picckeyset1->currentIndex()*8+ui->comboBox_picckeyset2->currentIndex()*4+ui->comboBox_picckeyset3->currentIndex()*2+ui->comboBox_picckeyset4->currentIndex();
        unsigned char retsw[2];       //卡操作返回代码
        for (int i=0;i<3;i++){aidbuf[i]=0x00;}  //aid为000000时表示PICC
        unsigned char status =mydesfirechangekeysettings(aidbuf, keysetting, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "更改PICC主密钥配置信息操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            if (status==63){
                QMessageBox::critical(NULL, "提示", "需要先验证当前应用的主密钥！" );
            }else{
                if (status==94){
                    QMessageBox::critical(NULL, "提示", "先执行选择AID为：000000 的PICC级应用！" );
                    ui->lineEdit_aid->setText("00 00 00");
                }else{QMessageBox::critical(NULL, "提示", QString::asprintf("更改PICC主密钥配置信息操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));}
            }
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfirechangekeysettings’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 八、搜索PICC内所有APP应用AID

void MainWindow::on_pushButton_getappids_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfiregetapplicationids != NULL){
        unsigned char aidbuf[57];       //应用AID号数据缓冲，每个AID号占用3个字节，最多19个应AID号
        unsigned char aidsize[1];       //返回的应用数量，最大19个
        unsigned char retsw[2];         //卡操作返回代码
        unsigned char status =mydesfiregetapplicationids(aidbuf, aidsize, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QString aidstr="";
            if (aidsize[0]>0){
                aidstr=QString::asprintf("应用AID：%02X%02X%02X", aidbuf[0],aidbuf[1],aidbuf[2]);
                for (int i=1;i<aidsize[0];i++){aidstr=aidstr+QString::asprintf(",%02X%02X%02X", aidbuf[i*3],aidbuf[i*3+1],aidbuf[i*3+2]);}
            }
            QMessageBox::information(NULL, "提示", "搜索当前卡片内所有应用操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr)+QString::asprintf("\n应用数量：%d", aidsize[0])+"\n"+aidstr);
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("搜索当前卡片内所有应用操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfiregetapplicationids’未正确载入，请查询DLL文件版本是否正确！");
    }
}

九、创建新的APP应用 

void MainWindow::on_pushButton_createapp_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfirecreateapplication != NULL){
        QString aidstr=ui->lineEdit_appid->text().trimmed();
        unsigned char aidbuf[3];
        int checkbuflen=checkhexdata(aidstr,aidbuf);
        if (checkbuflen!=3){
            QMessageBox::critical(NULL, "提示", "新AID输入错误，请输入3字节16进制AID！");
            ui->lineEdit_appid->setFocus();
            return;
        }
        if(aidbuf[0] + aidbuf[1] + aidbuf[2] == 0x00){
            QMessageBox::critical(NULL, "提示", "新创建的应用不可以是AID为 000000 的PICC级应用！");
            ui->lineEdit_appid->setFocus();
            return;
        }
        unsigned char keysetting=ui->comboBox_appkeyset1->currentIndex()*16+ui->comboBox_appkeyset2->currentIndex()*8+ui->comboBox_appkeyset3->currentIndex()*4+ui->comboBox_appkeyset4->currentIndex()*2+ui->comboBox_appkeyset5->currentIndex();
        unsigned char keynumber=ui->spinBox_appkeys->value();
        unsigned char keymode=ui->comboBox_appkeymode->currentIndex();
        unsigned char retsw[2];         //卡操作返回代码
        unsigned char status =mydesfirecreateapplication(aidbuf, keysetting,keynumber,keymode, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "创建新应用操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("创建新应用操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfirecreateapplication’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 十、读取APP应用的密钥配置信息

void MainWindow::on_pushButton_getappkeyset_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfiregetkeysettings != NULL){
        QString aidstr=ui->lineEdit_appid->text().trimmed();
        unsigned char aidbuf[3];
        int checkbuflen=checkhexdata(aidstr,aidbuf);
        if (checkbuflen!=3){
            QMessageBox::critical(NULL, "提示", "AID输入错误，请输入3字节16进制AID！");
            ui->lineEdit_appid->setFocus();
            return;
        }
        if(aidbuf[0] + aidbuf[1] + aidbuf[2] == 0x00){
            QMessageBox::critical(NULL, "提示", "此处禁止操作AID为 000000 的PICC级应用！");
            ui->lineEdit_appid->setFocus();
            return;
        }
        unsigned char keysetting[1];
        unsigned char keysize[1];
        unsigned char retsw[2];         //卡操作返回代码
        unsigned char status =mydesfiregetkeysettings(aidbuf, keysetting, keysize, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            ui->comboBox_appkeyset1->setCurrentIndex(keysetting[0]/16);
            if (keysetting[0] & 8>0){
                ui->comboBox_appkeyset2->setCurrentIndex(1);
            }else{ui->comboBox_appkeyset2->setCurrentIndex(0);}
            if (keysetting[0] & 4>0){
                ui->comboBox_appkeyset3->setCurrentIndex(1);
            }else{ui->comboBox_appkeyset3->setCurrentIndex(0);}
            if (keysetting[0] & 2>0){
                ui->comboBox_appkeyset4->setCurrentIndex(1);
            }else{ui->comboBox_appkeyset4->setCurrentIndex(0);}
            if (keysetting[0] & 1>0){
                ui->comboBox_appkeyset5->setCurrentIndex(1);
            }else{ui->comboBox_appkeyset5->setCurrentIndex(0);}
            int keynum=keysize[0] % 64;
            ui->spinBox_appkeys->setValue(keynum);
            if (keysize[0] & 0xC0 == 0x80){
                ui->comboBox_appkeymode->setCurrentIndex(3);
            }else{
                if (keysize[0] & 0xC0 == 0x40){
                    ui->comboBox_appkeymode->setCurrentIndex(2);
                }else{ui->comboBox_appkeymode->setCurrentIndex(0);}  //DES 和 2K3DES 都可能
            }
            QMessageBox::information(NULL, "提示", "读取应用的密钥配置信息操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr)+QString::asprintf("\n密钥配置：%02X", keysetting[0]));
        }else{
            if (status==94){
                QMessageBox::information(NULL, "提示", QString::asprintf("请先执行选择AID为：%02X%02X%02X", aidbuf[0],aidbuf[1],aidbuf[2]) +" 的应用!" );
            }else{
                QMessageBox::critical(NULL, "提示", QString::asprintf("读取应用的密钥配置信息操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
            }
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfiregetkeysettings’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 十一、更改APP应用的密钥配置值

void MainWindow::on_pushButton_changeappkeyset_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfirechangekeysettings != NULL){
        QString aidstr=ui->lineEdit_appid->text().trimmed();
        unsigned char aidbuf[3];
        int checkbuflen=checkhexdata(aidstr,aidbuf);
        if (checkbuflen!=3){
            QMessageBox::critical(NULL, "提示", "AID输入错误，请输入3字节16进制AID！");
            ui->lineEdit_appid->setFocus();
            return;
        }
        if(aidbuf[0] + aidbuf[1] + aidbuf[2] == 0x00){
            QMessageBox::critical(NULL, "提示", "此处禁止操作AID为 000000 的PICC级应用！");
            ui->lineEdit_appid->setFocus();
            return;
        }
        unsigned char keysetting=ui->comboBox_appkeyset1->currentIndex() * 16 + ui->comboBox_appkeyset2->currentIndex() * 8 + ui->comboBox_appkeyset3->currentIndex() * 4 + ui->comboBox_appkeyset4->currentIndex() * 2 + ui->comboBox_appkeyset5->currentIndex();
        unsigned char retsw[2];         //卡操作返回代码
        unsigned char status =mydesfirechangekeysettings(aidbuf, keysetting, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "更改应用密钥配置操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            if (status==63){
                QMessageBox::critical(NULL, "提示", "需要先验证当前应用的主密钥！" );
            }else{
                if (status==94){
                    QMessageBox::critical(NULL, "提示",  QString::asprintf("请先执行选择AID为：%02X%02X%02X", aidbuf[0],aidbuf[1],aidbuf[2]) +" 的应用!" );
                }else{QMessageBox::critical(NULL, "提示", QString::asprintf("更改应用密钥配置信息操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));}
            }
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfirechangekeysettings’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 十二、删除PICC内已有的APP应用

void MainWindow::on_pushButton_deleteapp_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfiredeleteapplication != NULL){
        QString aidstr=ui->lineEdit_appid->text().trimmed();
        unsigned char aidbuf[3];
        int checkbuflen=checkhexdata(aidstr,aidbuf);
        if (checkbuflen!=3){
            QMessageBox::critical(NULL, "提示", "AID输入错误，请输入3字节16进制AID！");
            ui->lineEdit_appid->setFocus();
            return;
        }
        if(aidbuf[0] + aidbuf[1] + aidbuf[2] == 0x00){
            QMessageBox::critical(NULL, "提示", "此处禁止操作AID为 000000 的PICC级应用！");
            ui->lineEdit_appid->setFocus();
            return;
        }
        unsigned char retsw[2];         //卡操作返回代码
        unsigned char status =mydesfiredeleteapplication(aidbuf, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "删除卡内应用操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("删除卡内应用操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfiredeleteapplication’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 十三、搜索当前APP应用内的所有文件fileid

void MainWindow::on_pushButton_getfileids_clicked()
{
    if(!checkdllos()){return;}          //判断运行目录内动态库文件是否存在
    if (mydesfiregetfileids != NULL){
        unsigned char fidbuf[16];       //文件FID号数据缓冲，每个FID号占用1个字节，最多16个FID号
        unsigned char fidsize[1];       //返回的文件数量，最多16个
        unsigned char retsw[2];         //卡操作返回代码
        unsigned char status =mydesfiregetfileids(fidbuf, fidsize, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QString fidstr="";
            if (fidsize[0]>0){
                fidstr=QString::asprintf("文件ID：%d", fidbuf[0]);
                for (int i=1;i<fidsize[0];i++){fidstr=fidstr+QString::asprintf(",%d", fidbuf[i]);}
            }
            QMessageBox::information(NULL, "提示", "搜索当前应用内所有文件ID操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr)+QString::asprintf("\n文件数量：%d", fidsize[0])+"\n"+fidstr);
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("搜索当前应用内所有文件ID操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfiregetfileids’未正确载入，请查询DLL文件版本是否正确！");
    }
}

十四、在当前APP应用内创建新的文件

void MainWindow::on_pushButton_createfile_clicked()
{
    if(!checkdllos()){return;}          //判断运行目录内动态库文件是否存在
    if (mydesfirecreatestddatafile != NULL && mydesfircreatebackupdatafile != NULL){
        unsigned char comset;           //通讯模式
        if (ui->comboBox_filerwmode->currentIndex()<2){
            comset=ui->comboBox_filerwmode->currentIndex();
        }else{comset=3;}
        unsigned char fileid=ui->spinBox_fileid->value();       //文件ID
        unsigned char filesize=ui->spinBox_filesize->value();   //文件大小
        unsigned char accessrights[2];      //文件密钥配置信息
        accessrights[0]=ui->comboBox_RandW->currentIndex() * 16 + ui->comboBox_changefileset->currentIndex();
        accessrights[1]=ui->comboBox_readonly->currentIndex() * 16 + ui->comboBox_writeonly->currentIndex();
        unsigned char retsw[2];             //卡操作返回代码
        unsigned char status;
        if (ui->radioButton_Standard->isChecked()){
            status=mydesfirecreatestddatafile(fileid, comset, accessrights, filesize, retsw);
        }else{status=mydesfircreatebackupdatafile(fileid, comset, accessrights, filesize, retsw);}
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "在应用内创建新文件操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            if (status==53){
                QMessageBox::critical(NULL, "提示", QString::asprintf("在应用内创建新文件操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明：CPU卡功能通讯错误，可能是卡拿开重放后未激活或卡不在感应区！");
            }else{
                if (status==57){
                    if(retstr == "91DE"){
                        QMessageBox::critical(NULL, "提示", QString::asprintf("在应用内创建新文件操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明：可能的原因：1 应用没选择对，2 密码未认证，3 文件已存在！");
                    }else{QMessageBox::critical(NULL, "提示", QString::asprintf("在应用内创建新文件操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明：请选择正确的应用！");}
                }else{QMessageBox::critical(NULL, "提示", QString::asprintf("在应用内创建新文件操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));}
            }
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfirecreatestddatafile\mydesfircreatebackupdatafile’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 十五、获取文件的密钥配置信息

void MainWindow::on_pushButton_getfileset_clicked()
{
    if(!checkdllos()){return;}          //判断运行目录内动态库文件是否存在
    if (mydesfiregetfilesettings != NULL){
        unsigned char fileid=ui->spinBox_fileid->value();       //文件ID
        unsigned char filesettingsbuf[32];   //文件密钥配置缓冲
        unsigned char revbuflen[2];          //长度
        unsigned char retsw[2];             //卡操作返回代码
        unsigned char status =mydesfiregetfilesettings(fileid, filesettingsbuf, revbuflen, retsw);

        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            int revlen= revbuflen[0]+revbuflen[1]*256;
            QString filesetstr="";
            for (int i=1;i<revlen;i++){
                filesetstr=filesetstr+QString::asprintf("%02X", filesettingsbuf[i]);
            }

            if (filesettingsbuf[1] % 4==3){     //解析通信模式
                ui->comboBox_filerwmode->setCurrentIndex(2);
            }else{
                if (filesettingsbuf[1] % 4==1){
                    ui->comboBox_filerwmode->setCurrentIndex(1);
                }else{ui->comboBox_filerwmode->setCurrentIndex(0);}
            }
            ui->comboBox_readonly->setCurrentIndex(filesettingsbuf[3] / 16);     //只读时需要的密码号
            ui->comboBox_writeonly->setCurrentIndex(filesettingsbuf[3] % 16);    //只写时需要的密码号
            ui->comboBox_RandW->setCurrentIndex(filesettingsbuf[2] / 16);        //读写时需要的密码号
            ui->comboBox_changefileset->setCurrentIndex(filesettingsbuf[2] % 16);//更改本配置时需要的密码号
            int  filesize=filesettingsbuf[4]+filesettingsbuf[5]*256+filesettingsbuf[6]*65536; //文件大小
            ui->spinBox_filesize->setValue(filesize);
            QMessageBox::information(NULL, "提示", "读取文件配置信息操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr)+"\n16进制文件配置信息："+filesetstr);
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("读取文件配置信息操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfiregetfilesettings’未正确载入，请查询DLL文件版本是否正确！");
    }
}

十六、更改文件的密钥配置值 

void MainWindow::on_pushButton_changefileset_clicked()
{
    if(!checkdllos()){return;}          //判断运行目录内动态库文件是否存在
    if (mydesfirechangefilesettings != NULL){
        unsigned char comset;           //通讯模式
        if (ui->comboBox_filerwmode->currentIndex()<2){
            comset=ui->comboBox_filerwmode->currentIndex();
        }else{comset=3;}
        unsigned char fileid=ui->spinBox_fileid->value();       //文件ID
        unsigned char accessrights[2];      //文件密钥配置信息
        accessrights[0]=ui->comboBox_RandW->currentIndex() * 16 + ui->comboBox_changefileset->currentIndex();
        accessrights[1]=ui->comboBox_readonly->currentIndex() * 16 + ui->comboBox_writeonly->currentIndex();
        unsigned char retsw[2];             //卡操作返回代码
        unsigned char status=mydesfirechangefilesettings(fileid, comset, accessrights, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "更改文件配置操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            if (status==53){
                QMessageBox::critical(NULL, "提示", QString::asprintf("更改文件配置操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明：CPU卡功能通讯错误，可能是卡拿开重放后未激活或卡不在感应区！");
            }else{
                QMessageBox::critical(NULL, "提示", QString::asprintf("更改文件配置操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
            }
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfirechangefilesettings’未正确载入，请查询DLL文件版本是否正确！");
    }
}

十七、删除APP内已有的文件 

void MainWindow::on_pushButton_deletefile_clicked()
{
    if(!checkdllos()){return;}          //判断运行目录内动态库文件是否存在
    if (mydesfiredeletefile != NULL){
        unsigned char fileid=ui->spinBox_fileid->value();       //文件ID
        unsigned char retsw[2];             //卡操作返回代码
        unsigned char status=mydesfiredeletefile(fileid, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "删除文件操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("删除文件操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfiredeletefile’未正确载入，请查询DLL文件版本是否正确！");
    }
}

十八、读文件
 

void MainWindow::on_pushButton_readdata_clicked()
{
    if(!checkdllos()){return;}          //判断运行目录内动态库文件是否存在
    if (mydesfirereaddata != NULL){
        ui->plainTextEdit_rwdata->setPlainText("");
        unsigned char cmd=0xBD;     //函数第1个参数为&HBD表示读数据，为&hBB表示读记录
        unsigned char fileid=ui->spinBox_fileid->value();       //文件ID
        int rwbegin=ui->spinBox_begin->value();     //读起始地址
        int rwlen=ui->spinBox_rwsize->value();      //读取数据长度
        unsigned char databuf[8192];
        unsigned char retsw[2];             //卡操作返回代码
        unsigned char status=mydesfirereaddata(cmd,fileid, rwbegin, rwlen,databuf, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QString datastr="";
            for (int i=0;i<rwlen;i++){
                datastr=datastr+QString::asprintf("%02X ", databuf[i]);
            }
            ui->plainTextEdit_rwdata->setPlainText(datastr);
            QMessageBox::information(NULL, "提示", "读文件操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            if (status==63){
                QMessageBox::critical(NULL, "提示", QString::asprintf("读文件操作返回异常：%d", status)+"\n说明：权限不足,请先用正确的密钥号认证！");
            }else{
                QMessageBox::critical(NULL, "提示", QString::asprintf("读文件操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
            }
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfirereaddata’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 十九、写文件

void MainWindow::on_pushButton_writedata_clicked()
{
    if(!checkdllos()){return;}          //判断运行目录内动态库文件是否存在
    if (mydesfirewritedata != NULL){
        int rwlen=ui->spinBox_rwsize->value();  // 数据长度
        if (rwlen<1){
            QMessageBox::critical(NULL, "提示", "请输入要写入文件的数据字节数！");
            ui->spinBox_rwsize->setFocus();
            return;
        }
        QString datastr=ui->plainTextEdit_rwdata->toPlainText();
        unsigned char databuf[rwlen];
        int checkbuflen=checkhexdata(datastr,databuf);
        if (checkbuflen!=rwlen){
            QMessageBox::critical(NULL, "提示", QString::asprintf("写数据输入错误，请输入 %d", rwlen)+  " 个字节16进制的数据！");
            ui->plainTextEdit_rwdata->setFocus();
            return;
        }
        unsigned char cmd=0x3D;     //函数第1个参数为&H3D表示写数据，为&h3B表示写记录
        unsigned char fileid=ui->spinBox_fileid->value();       //文件ID
        int rwbegin=ui->spinBox_begin->value();     //读起始地址
        unsigned char retsw[2];                     //卡操作返回代码
        unsigned char status=mydesfirewritedata(cmd,fileid, rwbegin, rwlen,databuf, retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "写文件操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            if (status==63){
                QMessageBox::critical(NULL, "提示", QString::asprintf("写文件操作返回异常：%d", status)+"\n说明：权限不足,请先用正确的密钥号认证！");
            }else{
                QMessageBox::critical(NULL, "提示", QString::asprintf("写文件操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
            }
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘desfirewritedata’未正确载入，请查询DLL文件版本是否正确！");
    }
}

 二十、初始格式化PICC

void MainWindow::on_pushButton_formatpicc_clicked()
{
    if(!checkdllos()){return;}        //判断运行目录内动态库文件是否存在
    if (mydesfireformatpicc != NULL){
        unsigned char retsw[2];       //卡操作返回代码
        unsigned char status =mydesfireformatpicc(retsw);
        QString retstr =QString::asprintf("%02X%02X", retsw[0], retsw[1]);
        if (status==0){
            QMessageBox::information(NULL, "提示", "初始格式化卡操作卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }else{
            QMessageBox::critical(NULL, "提示", QString::asprintf("初始格式化卡操作返回异常：%d", status)+"卡片返回代码：" + retstr+"\n说明："+RetTextFromStr(retstr));
        }
    }else{
        QMessageBox::critical(NULL, "提示", "函数‘esfireformatpicc’未正确载入，请查询DLL文件版本是否正确！");
    }
}