diff --git a/common/util.cpp b/common/util.cpp
index f7f7997..5eb3af9 100644
--- a/common/util.cpp
+++ b/common/util.cpp
@@ -1,10 +1,11 @@
 #include "util.h"
 
-Util::Util(QObject *parent) : QObject(parent)
+Util::Util(Util::ClientType clientType, QObject *parent) : QObject(parent)
 {
     isRequiringOutput = false;
     requiredOutput = new QString();
     timeStamp = QTime::currentTime();
+    this->clientType = clientType;
 }
 
 void Util::processOutput(QString output)
@@ -31,7 +32,7 @@ QString Util::execCMDWithOutput(QString cmd, unsigned long timeout)
     isRequiringOutput = true;
     requiredOutput->clear();
     execCMD(cmd);
-    while( QTime::currentTime() < targetTime)
+    while(QTime::currentTime() < targetTime)
     {
         QApplication::processEvents();
         if(timeStamp > currTime)
@@ -47,6 +48,10 @@ QString Util::execCMDWithOutput(QString cmd, unsigned long timeout)
 void Util::delay(unsigned int msec)
 {
     QTime timer = QTime::currentTime().addMSecs(msec);
-    while( QTime::currentTime() < timer )
+    while(QTime::currentTime() < timer)
         QApplication::processEvents(QEventLoop::AllEvents, 100);
 }
+Util::ClientType Util::getClientType()
+{
+    return this->clientType;
+}
diff --git a/common/util.h b/common/util.h
index 3b29a69..34c47fb 100644
--- a/common/util.h
+++ b/common/util.h
@@ -13,11 +13,17 @@ class Util : public QObject
 {
     Q_OBJECT
 public:
-    explicit Util(QObject *parent = nullptr);
+    enum ClientType
+    {
+        OFFICIAL,
+        ICEMAN,
+    };
+    explicit Util(Util::ClientType clientType, QObject *parent = nullptr);
 
     void execCMD(QString cmd);
     QString execCMDWithOutput(QString cmd, unsigned long timeout = 2000);
     void delay(unsigned int msec);
+    ClientType getClientType();
 public slots:
     void processOutput(QString output);
 
@@ -28,6 +34,7 @@ private:
 signals:
     void refreshOutput(const QString& output);
     void write(QString data);
+    ClientType clientType;
 };
 
 #endif // UTIL_H
diff --git a/module/mifare.cpp b/module/mifare.cpp
index fccc46f..a6960ee 100644
--- a/module/mifare.cpp
+++ b/module/mifare.cpp
@@ -114,6 +114,72 @@ void Mifare::list()
     ui->funcTab->setCurrentIndex(1);
 }
 
+QString Mifare::_readblk(int blockId, KeyType keyType, QString& key, int waitTime)
+{
+    QString data;
+    QString result;
+    if(util->getClientType() == Util::OFFICIAL)
+    {
+        result = util->execCMDWithOutput(
+                     "hf mf rdbl "
+                     + QString::number(blockId)
+                     + " "
+                     + (char)keyType
+                     + " "
+                     + key,
+                     waitTime);
+        if(result.indexOf("isOk:01") != -1)
+        {
+            result = result.mid(dataPattern->indexIn(result), 47).toUpper();
+            if((blockId < 128 && ((blockId + 1) % 4 == 0)) || ((blockId + 1) % 8 == 0)) // process key block
+            {
+                if(keyType == KEY_A)
+                {
+                    for(int i = 0; i < 6; i++)
+                    {
+                        result = result.replace(i * 3, 2, key.mid(i * 2, 2));
+                    }
+                    data = result;
+                    QString tmpKey = result.right(18).replace(" ", "");
+                    result = util->execCMDWithOutput(
+                                 "hf mf rdbl "
+                                 + QString::number(blockId)
+                                 + " B "
+                                 + tmpKey,
+                                 waitTime);
+                    if(result.indexOf("isOk:01") == -1)
+                    {
+                        result = data;
+                        result = result.replace(30, 17, "?? ?? ?? ?? ?? ??");
+                        data = result;
+                    }
+                }
+                else
+                {
+                    for(int i = 0; i < 6; i++)
+                    {
+                        result = result.replace(
+                                     30 + i * 3,
+                                     2,
+                                     key.mid(i * 2, 2));
+                    }
+                    result = result.replace(0, 18, "?? ?? ?? ?? ?? ?? ");
+                    data = result;
+                }
+            }
+            else
+            {
+                data = result;
+            }
+        }
+        else
+        {
+            data = "";
+        }
+        return data;
+    }
+}
+
 void Mifare::read()
 {
     int waitTime = 300;
diff --git a/module/mifare.h b/module/mifare.h
index bb54d83..c496b1e 100644
--- a/module/mifare.h
+++ b/module/mifare.h
@@ -32,8 +32,8 @@ public:
 
     enum KeyType
     {
-        KEY_A,
-        KEY_B,
+        KEY_A = 'A',
+        KEY_B = 'B',
     };
 
     enum DataType
@@ -87,7 +87,7 @@ public:
 
     void data_clearData();
     void data_clearKey();
-    bool data_isKeyValid(const QString &key);
+    bool data_isKeyValid(const QString& key);
     Mifare::DataType data_isDataValid(QString data);
     void data_syncWithDataWidget(bool syncAll = true, int block = 0);
     void data_syncWithKeyWidget(bool syncAll = true, int sector = 0, KeyType keyType = KEY_A);
@@ -102,15 +102,15 @@ public:
     void wipeC();
     void setParameterC();
 
-    bool data_loadDataFile(const QString &filename);
-    bool data_loadKeyFile(const QString &filename);
+    bool data_loadDataFile(const QString& filename);
+    bool data_loadKeyFile(const QString& filename);
     bool data_saveDataFile(const QString& filename, bool isBin);
-    bool data_saveKeyFile(const QString &filename, bool isBin);
+    bool data_saveKeyFile(const QString& filename, bool isBin);
     void data_key2Data();
     void data_data2Key();
 
-    void data_setData(int block, const QString &data);
-    void data_setKey(int sector, KeyType keyType, const QString &key);
+    void data_setData(int block, const QString& data);
+    void data_setKey(int sector, KeyType keyType, const QString& key);
     void lockC();
     void writeAllE();
     void readAllE();
@@ -133,7 +133,9 @@ private:
     QRegExp* chkKeyPattern;
     QRegExp* nestedKeyPattern;
     QRegExp* UIDPattern;
-    QString bin2text(const QByteArray &buff, int start, int length);
+    QString bin2text(const QByteArray& buff, int start, int length);
+
+    QString _readblk(int blockId, KeyType keyType, QString &key, int waitTime);
 };
 
 #endif // MIFARE_H