diff --git a/output/ezlic_drt0_jjacdgpdxpb.lic b/ezlic_drt0_jjacdgpdxpb.lic
similarity index 84%
rename from output/ezlic_drt0_jjacdgpdxpb.lic
rename to ezlic_drt0_jjacdgpdxpb.lic
index ab667a0..85143b9 100644
Binary files a/output/ezlic_drt0_jjacdgpdxpb.lic and b/ezlic_drt0_jjacdgpdxpb.lic differ
diff --git a/include/common/licenceCommon.h b/include/common/licenceCommon.h
index 6dcd04a..c68bf77 100644
--- a/include/common/licenceCommon.h
+++ b/include/common/licenceCommon.h
@@ -52,6 +52,7 @@ enum class GeneralError
   LicenceSizeCardMismatch = 53,
   LicenceMismatch = 54,
   LicenceCRCMismatch = 54,
+  UIDReadError = 55,
   ItemsCountMismatch = 61
 };
 
@@ -168,6 +169,13 @@ struct LicenceELC2Info
   map<DWORD, DWORD> licences = {};
 };
 
+/* struktury pro ELC 3 */
+// defaultní struktura pro ELC 3
+struct LicenceELC3Info
+{
+  map<DWORD, DWORD> licences = {};
+};
+
 // struct LicenceELC2Info_1
 // {
 //   map<int, int> licences = {};
@@ -180,13 +188,27 @@ struct LicenceELC2Item
   DWORD dataPointsCount{};
 };
 
-// struktura polozky ELC 2,
+// struktura polozky ELC 2 pro další kompatibility
 struct LicenceELC2Item_1
 {
   DWORD protocolId{};
   DWORD dataPointsCount{};
 };
 
+// defaultni struktura polozky ELC 3
+struct LicenceELC3Item
+{
+  DWORD protocolId{};
+  DWORD dataPointsCount{};
+};
+
+// struktura polozky ELC 3 pro další kompatibility,
+struct LicenceELC3Item_1
+{
+  DWORD protocolId{};
+  DWORD dataPointsCount{};
+};
+
 class LicenceException : public std::exception
 {
 public:
diff --git a/include/common/licenceELC3.h b/include/common/licenceELC3.h
new file mode 100644
index 0000000..4e6f90a
--- /dev/null
+++ b/include/common/licenceELC3.h
@@ -0,0 +1,89 @@
+#ifndef EZ_APPLICATION_LICENCE_DISABLE
+
+#ifndef PLC_LICENCE3_COMMON_H
+#define PLC_LICENCE3_COMMON_H
+
+#define UID_LENGTH 32
+
+#include <vector>
+#include "licenceCommon.h"
+
+/// @brief společná třída pro pro reader i generator licence typu ELC2
+class LicenceELC3
+{
+public:
+  LicenceELC3();
+  LicenceELC3(LicenceIdentification &licIdentification);
+  ~LicenceELC3();
+
+  string licenceFilePath = "";
+  string licFileName = "";
+  string uid = "";
+  BYTE uidb[UID_LENGTH] = {};
+  string uid_path = ""; ///etc/machine-id
+
+
+  Mapping mapping;
+
+  ErrorMessage errorMessage;
+
+  struct LicenceId
+  {
+    char licIdent[5] = {'E', 'L', 'C', '0', '_'};
+  };
+
+  // struct __attribute__((__packed__)) LicencePublicHeader
+  struct LicenceIdentDataHeader
+  {
+    BYTE licenceType{};            // EOSEOV, DRT ...
+    BYTE licenceTypeVersion = 1;   // verze licence, urcuje nuance sifrování a pojmenování souborů
+    BYTE licenceIndex{};           // puvodní post fix, identifikátor pro více licencí
+    BYTE compatibilityVersion = 1; // udava verzi komplet PrivateContent
+    BYTE licItemCount{};           // počet protokolů v linenci
+    WORD publicHeaderLength{};     // délka veřejné hlavičy
+    // WORD cardSize{};               // velikost SD karty
+    // DWORD serialNumber = {};       // seriove cislo karty
+  };
+
+  struct licDataItem
+  {
+    DWORD protoId{};  // id protokolu pro ktery je licence
+    DWORD licCount{}; // pocet datovych bodu licence
+  };
+
+  struct PublicHeader
+  {
+    string version = "";
+    string projectDescription = "";
+    string date = "";
+    string licenceType = "";
+  };
+
+  struct PrivateContent // privátní šifrovaná část
+  {
+    LicenceIdentDataHeader licenceIdentHeader{};
+    vector<licDataItem> dataItems{};
+    WORD crc{};
+  };
+
+  struct LicenceBody
+  {
+    LicenceId licId{};
+    LicenceIdentDataHeader licenceIdentHeader{};
+    string publicHeader = ""; // JSON
+    PrivateContent privateContent{};
+  };
+
+protected:
+  vector<unsigned char> cryptPrivateContent(const std::vector<unsigned char> &content);
+  vector<unsigned char> decryptPrivateContent(const std::vector<unsigned char> &content);
+  void initVector(BYTE *iVector, BYTE *key);
+  string getLicenceName();
+  LicenceBody licBody{};
+  LicenceIdentification lIdentification{};
+
+private:
+};
+
+#endif
+#endif
\ No newline at end of file
diff --git a/include/generator/licGenELC3.h b/include/generator/licGenELC3.h
index 14eb29e..8941e48 100644
--- a/include/generator/licGenELC3.h
+++ b/include/generator/licGenELC3.h
@@ -1,9 +1,38 @@
-#ifndef ELC3_GENERATOR__H
-#define ELC3_GENERATOR__H
+#ifndef ELC3_GENERATOR_H
+#define ELC3_GENERATOR_H
+
+#include "utils.h"
+#include "licenceCommon.h"
+#include "licenceELC3.h"
+#include "pugixml.hpp"
+
+using namespace std;
 
 namespace Generator
 {
-  
+  class Licence3 : public LicenceELC3
+  {
+    
+  public:
+    Licence3();
+    Licence3(string uuid, pugi::xml_document * xmlDoc);
+    ~Licence3();
+
+    string cid = "";
+    string csd = "";
+    pugi::xml_document *xmlDoc;
+    string projectDescription = "";
+
+    bool createLicence();
+    
+    private:
+    void getHeader();
+    string getVersion(int middleVersion);
+    bool processInputConfiguration();
+    void getLicenceItems();
+
+
+  };
 }
 
 #endif
\ No newline at end of file
diff --git a/include/reader/licReaderELC3.h b/include/reader/licReaderELC3.h
index 352c4ef..48fd71d 100644
--- a/include/reader/licReaderELC3.h
+++ b/include/reader/licReaderELC3.h
@@ -3,9 +3,29 @@
 #ifndef ELC3_READER__H
 #define ELC3_READER__H
 
+#include "utils.h"
+#include "licenceCommon.h"
+#include "licenceELC3.h"
+
 namespace Reader
 {
-  
+  class Licence3 : public LicenceELC3
+  {
+  public:
+    LicenceELC3Info licenceInfo;
+    
+    Licence3();
+    ~Licence3();
+    Licence3(LicenceIdentification &licIdentification);
+
+    bool readLicence(LicenceInfoGeneral *licences);
+    bool getLicenceInfo(void *ptr);
+    void getLicenceItems();
+
+    private:
+    bool getUID();
+
+  };
 }
 
 #endif
diff --git a/include/reader/licenceReader.h b/include/reader/licenceReader.h
index cf3bba2..1e03fb8 100644
--- a/include/reader/licenceReader.h
+++ b/include/reader/licenceReader.h
@@ -21,6 +21,7 @@ struct InitStructure
   int compatibility = 0;
   string licenceFilePath = "";
   string cid_csd_filePath = "";
+  string uid_filePath = "";
 };
 
 /// @brief struktura pro informaci o licenci
@@ -49,6 +50,7 @@ public:
   bool getLicenceItemInfo(int protocolId, void *returnItemStructure); //vrací informace o licenčím bodu na základě id protocolu a předané návratové struktury
 
 private:
+  Licence3 *licence3 {}; //interní struktura pro zpracování licence ELC2
   Licence2 *licence2 {}; //interní struktura pro zpracování licence ELC2
   Licence1 *licence1 {}; //interní struktura pro zpracování licence ELC1
   LicenceIdentification licIdentification {};
diff --git a/output/createnew.bat b/output/createnew.bat
index 1fe5acb..2025a9f 100644
--- a/output/createnew.bat
+++ b/output/createnew.bat
@@ -1 +1 @@
-licenceGenerator.exe -cid=0353445355313647801b1a9f6600c747 -csd=0353445355313647801b1a9f6600c747 -outputType=file -configFileName=licData.xml
\ No newline at end of file
+licenceGenerator.exe -uid=9a2314bcee131834715adcabc506724c -cid=9f54495344434954615ad803c50171bf -csd=400e00325b5900003be77f800a400043 -outputType=file -configFileName=licData.xml
diff --git a/output/createnewELC2.bat b/output/createnewELC2.bat
new file mode 100644
index 0000000..d96b191
--- /dev/null
+++ b/output/createnewELC2.bat
@@ -0,0 +1 @@
+licenceGenerator.exe -cid=9f54495344434954615ad803c50171bf -csd=400e00325b5900003be77f800a400043 -outputType=file -configFileName=licData.xml
diff --git a/output/ezlic_drt0_yfavdwbbxbg.lic b/output/ezlic_drt0_yfavdwbbxbg.lic
new file mode 100644
index 0000000..f8aa693
Binary files /dev/null and b/output/ezlic_drt0_yfavdwbbxbg.lic differ
diff --git a/output/ezlic_eovosv0_wqxcyjpdxji.lic b/output/ezlic_eovosv0_wqxcyjpdxji.lic
deleted file mode 100644
index 98d0dd2..0000000
Binary files a/output/ezlic_eovosv0_wqxcyjpdxji.lic and /dev/null differ
diff --git a/output/licData.xml b/output/licData.xml
index adb5aa9..9bcb75d 100644
--- a/output/licData.xml
+++ b/output/licData.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<licence elc="2" xmlVersion="1" revision="1" compatibility="1">
+<licence elc="3" xmlVersion="1" revision="1" compatibility="1">
 <licenceType licenceVersion="1" licenceIndex="0">DRT</licenceType>
 <plcType>wago</plcType>
 <licenceName>Licence pro EOV_OSV</licenceName>
@@ -33,7 +33,7 @@
 <item>
 <name>pt_Ez_iec61850c</name>
 <protoId>7</protoId>
-<dataPointsCount>77</dataPointsCount>
+<dataPointsCount>30777</dataPointsCount>
 </item>
 </items>
 </licence>
\ No newline at end of file
diff --git a/output/machine-id b/output/machine-id
new file mode 100644
index 0000000..da26398
--- /dev/null
+++ b/output/machine-id
@@ -0,0 +1 @@
+9a2314bcee131834715adcabc506724c
\ No newline at end of file
diff --git a/src/CreateLicence.cpp b/src/CreateLicence.cpp
index 0ae37a0..5d98fed 100644
--- a/src/CreateLicence.cpp
+++ b/src/CreateLicence.cpp
@@ -1,15 +1,17 @@
 #ifndef EZ_APPLICATION_LICENCE_DISABLE
-#define LINUX 1
-//#define WINDOWS 1
+// #define LINUX 1
+#define WINDOWS 1
+#define READ 1
 
 #include <stdio.h>
 #include "licenceGenerator.h"
+#include "reader/licenceReader.h"
 
 /// @brief hlavní funkce
 /// @param argc
 /// @param argv parametry pro generování licence
 /// @return
-int main9(int argc, char *argv[])
+int main(int argc, char *argv[])
 {
   unordered_map<string, string> arguments = getArguments(argc, argv);
   try
@@ -17,6 +19,47 @@ int main9(int argc, char *argv[])
     unordered_map<string, string> arguments = getArguments(argc, argv);
     LicenceGenerator generatorOld = LicenceGenerator(arguments["-uid"], arguments["-cid"], arguments["-csd"], arguments["-configFileName"]);
     generatorOld.createLicenceFile();
+    system("pause");
+
+#ifdef READ
+    InitStructure initStructure = {};
+    initStructure.licenceType = (int)LicenceType::DRT;
+    initStructure.licenceVersion = 1;
+    initStructure.licenceIndex = 0;
+    initStructure.licenceFilePath = "c://_projects//sd_gen//output//"; // cesta k licenčnímu souboru
+    // initStructure.compatibility = 0; v případě kompatibility 0 či nezadané je výstup defaultní.
+    // pro ELC 1 LicenceELC1Info je to isValid, pro ELC 2 strukura { int protocolId = -1; int dataPointsCount = 0; }
+    initStructure.cid_csd_filePath = ""; // cesta k cidu/csd pro načtení a kontrolu licence
+    initStructure.uid_filePath = "";     // cesta k souboru machine-id. (/etc/machine-id), takze by mělo být /etc/. machine-id si doplním
+
+    //---------------------------------------- ELC3 ----------------------------------------------------------
+    // verze ELC 3 pro jeden protokol. Oproti ELC2 je potřeba přidat cestu k uid/machine-id v initStructure
+    LicenceReader licenceReaderELC3{};
+    if (licenceReaderELC3.initread(3, initStructure)) // iniciacni nacteni
+    {
+      LicenceELC3Item info; // podle ELC a kompatibility určit strukuru (LicenceInfo11, LicenceInfo21, LicenceInfo31)
+      // if ()
+      int protocolId = 7;
+      // ukazka dat SD karty
+      cout << "název licenčního souboru: " << licenceReaderELC3.licInfo.licenceFileName << "\n";
+      cout << "cesta k licenčnímu souboru: " << licenceReaderELC3.licInfo.licenceFilePath << "\n";
+
+      if (licenceReaderELC3.getLicenceItemInfo(protocolId, &info))
+      {
+        cout << "Pocet licencních bodu pro " << info.protocolId << ": " << info.dataPointsCount << std::endl;
+      }
+      else
+        cout << "Tento protokol nemá body";
+    }
+    else
+    {
+      cout << "CHYBA: " << licenceReaderELC3.error.message;
+    }
+    //---------------------------------------- ELC3 ----------------------------------------------------------
+    system("pause");
+    return SUCCES;
+#endif
+
     return SUCCES;
   }
   catch (const LicenceException &ex)
diff --git a/src/ReadLicence.cpp b/src/ReadLicence.cpp
index 6f8ee6b..b073686 100644
--- a/src/ReadLicence.cpp
+++ b/src/ReadLicence.cpp
@@ -1,7 +1,7 @@
 #ifndef EZ_APPLICATION_LICENCE_DISABLE
 
-#define LINUX 1
-// #define WINDOWS 1
+//#define LINUX 1
+#define WINDOWS 1
 
 #include "licenceReader.h"
 
@@ -9,7 +9,7 @@
 /// @param argc
 /// @param argv parametry pro generování licence
 /// @return
-int main()
+int main8()
 {
   // buffer,850client,104client, 104server, web
   // kouknout na unikatní klíc pro linux (native uid, i openssl neco má)
@@ -24,31 +24,35 @@ int main()
     // initStructure.compatibility = 0; v případě kompatibility 0 či nezadané je výstup defaultní.
     // pro ELC 1 LicenceELC1Info je to isValid, pro ELC 2 strukura { int protocolId = -1; int dataPointsCount = 0; }
     initStructure.cid_csd_filePath = ""; // cesta k cidu/csd pro načtení a kontrolu licence
+    initStructure.uid_filePath = ""; // cesta k souboru machine-id. (/etc/machine-id), takze by mělo být /etc/. 
 
-    // // verze původní ELC 1
-    // LicenceReader licenceReaderELC1{};
-    // if (licenceReaderELC1.initread(1, initStructure)) // iniciacni nacteni
-    // {
-    //   LicenceELC1Info info; // struktura pro ELC1. Nemá tam asi nic jiného smysl nez true/false
-    //   if (licenceReaderELC1.getLicenceInfo(&info))
-    //   {
-    //     if (info.isValid)
-    //       cout << "Platna licence ELC1 \n";
-    //     else
-    //       cout << "Neplatna licence ELC1\n";
-    //   }
-    //   else
-    //     cout << "CHYBA: " << licenceReaderELC1.error.message;
-    // }
-    // else
-    // {
-    //   cout << "CHYBA: " << licenceReaderELC1.error.message;
-    // }
 
-    // return SUCCES;
+    //---------------------------------------- ELC3 ----------------------------------------------------------
+    //verze ELC 3 pro jeden protokol. Oproti ELC2 je potřeba přidat cestu k uid/machine-id v initStructure
+    LicenceReader licenceReaderELC3{};
+    if (licenceReaderELC3.initread(3, initStructure)) // iniciacni nacteni
+    {
+      LicenceELC3Item info; // podle ELC a kompatibility určit strukuru (LicenceInfo11, LicenceInfo21, LicenceInfo31)
+      // if ()
+      int protocolId = 4;
+      cout << "název licenčního souboru: " << licenceReaderELC3.licInfo.licenceFileName << "\n";
+      cout << "cesta k licenčnímu souboru: " << licenceReaderELC3.licInfo.licenceFilePath << "\n";
 
-    // TODO přidat udaje o SD, kompatibilita, čas, jmeno licenčního souboru
-    // pročistit private/public
+      if (licenceReaderELC3.getLicenceItemInfo(protocolId, &info))
+      {
+        cout << "Pocet licencních bodu pro " << info.protocolId << ": " << info.dataPointsCount << std::endl;
+      }
+      else
+        cout << "Tento protokol nemá body";
+    }
+    else
+    {
+      cout << "CHYBA: " << licenceReaderELC3.error.message;
+    }
+    //---------------------------------------- ELC3 ----------------------------------------------------------
+    system("pause");
+    return SUCCES;
+    
 
     // verze ELC 2 pro jeden protokol
     LicenceReader licenceReaderELC2{};
@@ -59,8 +63,8 @@ int main()
       // Tedy pro ELC1 to bude LicenceELC1_1, pro ELC LicenceELC2_1
       LicenceELC2Item info; // podle ELC a kompatibility určit strukuru (LicenceInfo11, LicenceInfo21, LicenceInfo31)
       // if ()
-      int protocolId = 2;
-      // ukayka dat SD karty
+      int protocolId = 4;
+      // ukazka dat SD karty
       cout << "SD přečteno: " << licenceReaderELC2.sdCardInfo.isLoaded << "\n";
       cout << "Card size: " << licenceReaderELC2.sdCardInfo.cardSize << "\n";
       cout << "serial: " << licenceReaderELC2.sdCardInfo.serialNumber << "\n";
@@ -82,7 +86,6 @@ int main()
       //...........
       // }
 
-      // TODO toto upravit, kdyz nic neexistuje, tak to vrátí false
       if (licenceReaderELC2.getLicenceItemInfo(protocolId, &info))
       {
         cout << "Pocet licencních bodu pro " << info.protocolId << ": " << info.dataPointsCount << std::endl;
@@ -133,6 +136,29 @@ int main()
 system("pause");
 
   return SUCCES;
+
+    // verze původní ELC 1, zatím zůstává staré řešení
+    // LicenceReader licenceReaderELC1{};
+    // if (licenceReaderELC1.initread(1, initStructure)) // iniciacni nacteni
+    // {
+    //   LicenceELC1Info info; // struktura pro ELC1. Nemá tam asi nic jiného smysl nez true/false
+    //   if (licenceReaderELC1.getLicenceInfo(&info))
+    //   {
+    //     if (info.isValid)
+    //       cout << "Platna licence ELC1 \n";
+    //     else
+    //       cout << "Neplatna licence ELC1\n";
+    //   }
+    //   else
+    //     cout << "CHYBA: " << licenceReaderELC1.error.message;
+    // }
+    // else
+    // {
+    //   cout << "CHYBA: " << licenceReaderELC1.error.message;
+    // }
+
+    // return SUCCES;
+
 }
 
 // buffer,web, 850client,104client, 104server,
diff --git a/src/common/licenceELC2.cpp b/src/common/licenceELC2.cpp
index bf86885..f420c94 100644
--- a/src/common/licenceELC2.cpp
+++ b/src/common/licenceELC2.cpp
@@ -64,8 +64,10 @@ string LicenceELC2::getLicenceName()
 vector<unsigned char> LicenceELC2::cryptPrivateContent(const std::vector<unsigned char> &content)
 {
 
-  BYTE initVector[15] = {};
-  BYTE aesKey[32] = {};
+  // BYTE initVector[15] = {}; old funkční s 15, předěláme to do 16 pro test
+  // BYTE aesKey[32] = {};
+  BYTE initVector[CRYPT_INIT_VECTOR_SIZE] = {0};
+  BYTE aesKey[CRYPT_INIT_KEY_SIZE] = {0};
 
   LicenceELC2::initVector(initVector, aesKey);
 
@@ -105,7 +107,6 @@ vector<unsigned char> LicenceELC2::decryptPrivateContent(const std::vector<unsig
   vector<unsigned char> res{};
   for (int i = 0; i < decrypted_len; i++)
   {
-    // if (i==15) res.push_back(1);
     res.push_back(decrypted[i]);
   }
 
diff --git a/src/common/licenceELC3.cpp b/src/common/licenceELC3.cpp
new file mode 100644
index 0000000..1128f8b
--- /dev/null
+++ b/src/common/licenceELC3.cpp
@@ -0,0 +1,179 @@
+#ifndef EZ_APPLICATION_LICENCE_DISABLE
+
+#include "licenceELC3.h"
+#include "utils.h"
+
+LicenceELC3::LicenceELC3() {}
+
+LicenceELC3::~LicenceELC3() {}
+
+LicenceELC3::LicenceELC3(LicenceIdentification &licIdentification) : lIdentification(licIdentification)
+{
+}
+
+/// @brief get proper licencename
+/// @param licPostfix
+/// @return
+string LicenceELC3::getLicenceName()
+{
+  
+  BYTE uidb[UID_LENGTH] = {};
+  for (unsigned int i = 0; i < this->uid.length(); i++) uidb[i] = uid[i];
+
+  string result = "";
+  char prefixChar = 97;
+  int licType = (int)lIdentification.licLicenceType;
+  int lVersion = lIdentification.licenceVersion;
+
+  unordered_map<int, string> baseString;
+  baseString.insert(std::pair<int, string>((int)LicenceType::EOS_EOV, "ezlic_eovosv"));
+  baseString.insert(std::pair<int, string>((int)LicenceType::DDTS, "ezlic_ddts"));
+  baseString.insert(std::pair<int, string>((int)LicenceType::DRT, "ezlic_drt"));
+
+  struct Index
+  {
+    int index[11];
+  };
+
+  std::unordered_map<int, Index> indexes;
+  Index indexes1 = {7, 16, 20, 23, 18, 4, 9, 11, 6, 9, 13};
+  Index indexes2 = {12, 10, 22, 23, 24, 25, 9, 11, 2, 1, 3}; // puvodní indexy
+  Index indexes3 = {8, 13, 11, 9, 7, 11, 10, 13, 5, 20, 19};
+
+  indexes.insert(std::pair<int, Index>(1, indexes1));
+  indexes.insert(std::pair<int, Index>(2, indexes2));
+  indexes.insert(std::pair<int, Index>(3, indexes3));
+
+  result = baseString.at(licType) + to_string(lIdentification.licenceIndex) + "_";
+
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[0]] + (lIdentification.licenceIndex * 11)) % 25);
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[1]] + (lIdentification.licenceIndex * 39)) % 25);
+
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[2]] + (lIdentification.licenceIndex * 1)) % 25);
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[3]] * 2) % 25);
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[4]] + (lIdentification.licenceIndex * 5)) % 25);
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[5]] * 3) % 25);
+
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[6]] + (lIdentification.licenceIndex * 52)) % 25);
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[7]] + (lIdentification.licenceIndex * 34)) % 25);
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[8]] + (lIdentification.licenceIndex * 21)) % 25);
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[9]] + (lIdentification.licenceIndex * 47)) % 25);
+  result += prefixChar + ((uidb[indexes.at(lVersion).index[10]] + (lIdentification.licenceIndex * 7)) % 25);
+
+  result += ".lic";
+  return result;
+}
+
+vector<unsigned char> LicenceELC3::cryptPrivateContent(const std::vector<unsigned char> &content)
+{
+
+  BYTE initVector[CRYPT_INIT_VECTOR_SIZE] = {0};
+  BYTE aesKey[CRYPT_INIT_KEY_SIZE] = {0};
+
+  LicenceELC3::initVector(initVector, aesKey);
+
+  unsigned char encrypted[10000] = {};
+  const unsigned char *plainTextArray = content.data();
+  int finalEncryptedLength = encrypt(plainTextArray, content.size(), aesKey, initVector, encrypted);
+
+  if (finalEncryptedLength <= 0)
+    throw LicenceException((int)GeneralError::EncryptError, "Chyba při kryptování.");
+
+  std::vector<unsigned char> result(encrypted, encrypted + finalEncryptedLength);
+
+  return result;
+}
+
+vector<unsigned char> LicenceELC3::decryptPrivateContent(const std::vector<unsigned char> &content)
+{
+  BYTE initVector[CRYPT_INIT_VECTOR_SIZE] = {0};
+  BYTE aesKey[CRYPT_INIT_KEY_SIZE] = {0};
+
+  LicenceELC3::initVector(initVector, aesKey);
+  
+  const unsigned char *encryptedData = content.data();
+  unsigned char decrypted[10000] = {};
+
+  int decrypted_len = decrypt(encryptedData, content.size(), aesKey, initVector, decrypted);
+  if (decrypted_len <= 0)
+    throw LicenceException((int)GeneralError::DecryptError, "Chyba při dekryptování.");
+
+  vector<unsigned char> res{};
+  for (int i = 0; i < decrypted_len; i++)
+  {
+    res.push_back(decrypted[i]);
+  }
+
+  return res;
+
+}
+
+void LicenceELC3::initVector(BYTE *iVector, BYTE *key)
+{
+  BYTE uidb[32] = {};
+  for (unsigned int i = 0; i < this->uid.length(); i++) uidb[i] = uid[i];
+
+  CryptInitVector vec1 = {uidb[10],
+                          uidb[12],
+                          uidb[11],
+                          uidb[9],
+                          uidb[22]-6,
+                          uidb[24]-4,
+                          uidb[25]-13,
+                          uidb[21]-9,
+                          9, 10, 11, 12, 13, 14, 15, 16};
+  CryptInitVector vec2 = {5, 1, 3, uidb[9], 4, 12, 13, 17, 9, uidb[24]-15, 2, 23, 17, 13, 4, 3};
+  CryptInitVector vec3 = {2, 7, 1, uidb[6], 8, 13, 16, 6, 4, uidb[20]-15, 8, 7, 2, 14, 15, 21};
+
+  std::unordered_map<int, CryptInitVector> vectors;
+  vectors.insert(std::pair<int, CryptInitVector>(1, vec1));
+  vectors.insert(std::pair<int, CryptInitVector>(2, vec2));
+  vectors.insert(std::pair<int, CryptInitVector>(3, vec3));
+
+  CryptAesKey key1 = {uidb[12],
+                      uidb[23] - 15,
+                      uidb[25] - 15,
+                      uidb[11],
+                      uidb[9],
+                      uidb[21],
+                      uidb[9] % 25,
+                      uidb[22] - 15,
+                      4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
+  CryptAesKey key2 = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
+  CryptAesKey key3 = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
+
+
+  std::unordered_map<int, CryptAesKey> keys;
+  keys.insert(std::pair<int, CryptAesKey>(1, key1));
+  keys.insert(std::pair<int, CryptAesKey>(2, key2));
+  keys.insert(std::pair<int, CryptAesKey>(3, key3));
+
+  int lVersion = lIdentification.licenceVersion;
+
+  iVector[0] = vectors.at(lVersion).vec[0];
+  iVector[1] = vectors.at(lVersion).vec[1];
+  iVector[2] = vectors.at(lVersion).vec[2];
+  iVector[3] = vectors.at(lVersion).vec[3];
+  iVector[4] = vectors.at(lVersion).vec[4];
+  iVector[5] = vectors.at(lVersion).vec[5];
+  iVector[6] = vectors.at(lVersion).vec[6];
+  iVector[7] = vectors.at(lVersion).vec[7];
+
+  memcpy(&iVector[8], &iVector[0], 8);
+
+  key[0] = keys.at(lVersion).key[0];
+  key[1] = keys.at(lVersion).key[1];
+  key[2] = keys.at(lVersion).key[2];
+  key[3] = keys.at(lVersion).key[3];
+  key[4] = keys.at(lVersion).key[4];
+  key[5] = keys.at(lVersion).key[5];
+  key[6] = keys.at(lVersion).key[6];
+  key[7] = keys.at(lVersion).key[7];
+  memcpy(&key[8], &key[0], 8);
+  memcpy(&key[16], &key[6], 8);
+  memcpy(&key[24], &key[12], 8);
+}
+
+
+
+#endif
\ No newline at end of file
diff --git a/src/common/utils.cpp b/src/common/utils.cpp
index 37e4df6..92b657d 100644
--- a/src/common/utils.cpp
+++ b/src/common/utils.cpp
@@ -1,4 +1,6 @@
+
 #ifndef EZ_APPLICATION_LICENCE_DISABLE
+#define WINDOWS 1
 
 #include <openssl/conf.h>
 #include <openssl/ssl.h> /* core library */
diff --git a/src/generator/LicenceGenerator.cpp b/src/generator/LicenceGenerator.cpp
index aca47d7..41448b1 100644
--- a/src/generator/LicenceGenerator.cpp
+++ b/src/generator/LicenceGenerator.cpp
@@ -6,6 +6,8 @@
 #include "pugixml.hpp"
 #include <typeinfo>
 
+#define WINDOWS 1
+
 LicenceGenerator::LicenceGenerator()
 {
 }
@@ -13,16 +15,20 @@ LicenceGenerator::LicenceGenerator()
 LicenceGenerator::LicenceGenerator(string uid, string cid, string csd, string dataFileName)
 {
 
-  if (dataFileName.empty()) throw LicenceException((int)GeneralError::ParamMissing, "Missing par: dataFileName");
+  if (dataFileName.empty())
+    throw LicenceException((int)GeneralError::ParamMissing, "Missing par: dataFileName");
 
   if (uid.empty() == false)
   {
+    if (uid.length() != 32) throw LicenceException((int)GeneralError::IvanlidParam, "UID incorrect size");
     this->licData.uid = uid;
   }
   else
   {
-    if (cid.empty()) throw LicenceException((int)GeneralError::ParamMissing, "Missing par: CID");
-    if (csd.empty()) throw LicenceException((int)GeneralError::ParamMissing, "Missing par: CSD");
+    if (cid.empty())
+      throw LicenceException((int)GeneralError::ParamMissing, "Missing par: CID");
+    if (csd.empty())
+      throw LicenceException((int)GeneralError::ParamMissing, "Missing par: CSD");
   }
 
   this->configFileName = dataFileName;
@@ -36,57 +42,56 @@ LicenceGenerator::LicenceGenerator(string uid, string cid, string csd, string da
 
 bool LicenceGenerator::processInputConfiguration()
 {
-  
-    string fullFile = getCompletePath(this->configFileName);
-    const int fileNameLength = fullFile.length();
-    char fileName[fileNameLength] = {};
-    getCharsFromString(fullFile, fileName, fileNameLength);
+
+  string fullFile = getCompletePath(this->configFileName);
+  const int fileNameLength = fullFile.length();
+  char fileName[fileNameLength] = {};
+  getCharsFromString(fullFile, fileName, fileNameLength);
 
 #ifdef WINDOWS
-    pugi::xml_parse_result result = doc.load_file("licData.xml");
+  pugi::xml_parse_result result = doc.load_file("licData.xml");
 #else
-    pugi::xml_parse_result result = doc.load_file(fileName);
+  pugi::xml_parse_result result = doc.load_file(fileName);
 #endif
-    if (result)
+  if (result)
+  {
+    const char *dataRootName = doc.child("data") ? "data" : "licence"; // kompatibilita s verzí, která měla ještě root "data"
+
+    if (atoi(&doc.child(dataRootName).attribute("xmlVersion").value()[0]) != XML_VERSION)
     {
-      const char *dataRootName = doc.child("data") ? "data" : "licence"; // kompatibilita s verzí, která měla ještě root "data"
+      throw LicenceException((int)GeneralError::IvanlidParam, "Invalid param: XML VERSION");
+    }
 
-      if (atoi(&doc.child(dataRootName).attribute("xmlVersion").value()[0]) != XML_VERSION)
-      {
-        throw LicenceException((int)GeneralError::IvanlidParam, "Invalid param: XML VERSION");
-      }
+    this->licData.doc = &doc;
 
-      this->licData.doc = &doc;
-
-      string licType = doc.child(dataRootName).child("licenceType").child_value();
-      if (!licType.empty())
-      {
-        this->licIdentification.licLicenceType = mapping.licMapTypes[licType]; // LicenceType::EOS_EOV;
-      }
-      else
-      {
-        throw LicenceException((int)GeneralError::ParamMissing, "ERROR MISSING licenceType");
-      }
-
-      this->licIdentification.licenceVersion = atoi(&doc.child(dataRootName).child("licenceType").attribute("licenceVersion").value()[0]);
-      this->licIdentification.revision = doc.child(dataRootName).attribute("revision").value()[0];
-      this->licIdentification.licenceIndex = atoi(&doc.child(dataRootName).child("licenceType").attribute("licenceIndex").value()[0]);
-      this->licIdentification.licElcType = (ELCType)atoi(&doc.child(dataRootName).attribute("elc").value()[0]);
-
-      this->licIdentification.licCompatibility = atoi(&doc.child(dataRootName).attribute("compatibility").value()[0]);
-
-      string plcType = doc.child(dataRootName).child("plcType").child_value();
-      if (!plcType.empty())
-      {
-        this->licIdentification.licPlcType = mapping.licMapPlcType[plcType];
-      }
+    string licType = doc.child(dataRootName).child("licenceType").child_value();
+    if (!licType.empty())
+    {
+      this->licIdentification.licLicenceType = mapping.licMapTypes[licType]; // LicenceType::EOS_EOV;
     }
     else
     {
-      cout << "file: " << fileName << "\n";
-      throw LicenceException((int)GeneralError::FileOpenError, "Unable to open the config file.");
+      throw LicenceException((int)GeneralError::ParamMissing, "ERROR MISSING licenceType");
     }
 
+    this->licIdentification.licenceVersion = atoi(&doc.child(dataRootName).child("licenceType").attribute("licenceVersion").value()[0]);
+    this->licIdentification.revision = doc.child(dataRootName).attribute("revision").value()[0];
+    this->licIdentification.licenceIndex = atoi(&doc.child(dataRootName).child("licenceType").attribute("licenceIndex").value()[0]);
+    this->licIdentification.licElcType = (ELCType)atoi(&doc.child(dataRootName).attribute("elc").value()[0]);
+
+    this->licIdentification.licCompatibility = atoi(&doc.child(dataRootName).attribute("compatibility").value()[0]);
+
+    string plcType = doc.child(dataRootName).child("plcType").child_value();
+    if (!plcType.empty())
+    {
+      this->licIdentification.licPlcType = mapping.licMapPlcType[plcType];
+    }
+  }
+  else
+  {
+    cout << "file: " << fileName << "\n";
+    throw LicenceException((int)GeneralError::FileOpenError, "Unable to open the config file.");
+  }
   return true;
 }
 
@@ -120,14 +125,13 @@ void LicenceGenerator::createLicenceELC2()
   {
   case 1:
   {
-  Generator::Licence2 licence = Generator::Licence2(licData.cid,licData.csd,licData.doc);
-  licence.createLicence();
-  break;
+    Generator::Licence2 licence = Generator::Licence2(licData.cid, licData.csd, licData.doc);
+    licence.createLicence();
+    break;
   }
-  default: throw LicenceException((int)GeneralError::CompatibilityTypeNotImplemented, "Compatibility not implemented.");
-
+  default:
+    throw LicenceException((int)GeneralError::CompatibilityTypeNotImplemented, "Compatibility not implemented.");
   }
-  
 }
 
 void LicenceGenerator::createLicenceELC3()
@@ -135,10 +139,14 @@ void LicenceGenerator::createLicenceELC3()
   switch (this->licIdentification.licCompatibility)
   {
   case 1:
-    //LicenceELC31 licence = LicenceELC31(this->licData);
-    //licence.createLicence();
+  {
+    Generator::Licence3 licence = Generator::Licence3(licData.uid, licData.doc);
+    licence.createLicence();
     break;
   }
+  default:
+    throw LicenceException((int)GeneralError::CompatibilityTypeNotImplemented, "Compatibility not implemented.");
+  }
 }
 
 LicenceGenerator::~LicenceGenerator()
diff --git a/src/generator/licGenELC3.cpp b/src/generator/licGenELC3.cpp
index 196b417..2c06b19 100644
--- a/src/generator/licGenELC3.cpp
+++ b/src/generator/licGenELC3.cpp
@@ -2,7 +2,287 @@
 
 namespace Generator
 {
-  
+  Licence3::Licence3()
+  {
+  }
+
+  Licence3::~Licence3() {}
+
+  Licence3::Licence3(string uid, pugi::xml_document *xmlDoc)
+  {
+    this->uid = uid;
+
+    this->xmlDoc = xmlDoc;
+    if (processInputConfiguration() == false)
+      throw LicenceException((int)GeneralError::LicenceReadError, "Chyba při čtení licence");
+  }
+
+  void Licence3::getHeader()
+  {
+    PublicHeader publicHeader;
+    publicHeader.version = getVersion(lIdentification.revision);
+    publicHeader.projectDescription = projectDescription;
+    publicHeader.date = getDate();
+    publicHeader.licenceType = lIdentification.licTypeName;
+    publicHeader.licenceType += to_string(lIdentification.licenceIndex);
+
+    licBody.publicHeader = "";
+
+    licBody.publicHeader.append("{\"version\":");
+    licBody.publicHeader.append(publicHeader.version);
+    licBody.publicHeader.append("\",");
+
+    licBody.publicHeader.append("\"project\":\"");
+    licBody.publicHeader.append(publicHeader.projectDescription);
+    licBody.publicHeader.append("\",");
+
+    licBody.publicHeader.append("\"date\":\"");
+    licBody.publicHeader.append(publicHeader.date);
+    licBody.publicHeader.append("\",");
+
+    licBody.publicHeader.append("\"note\":\"poznámka\",");
+    licBody.publicHeader.append("\"licenceType\":\"");
+    licBody.publicHeader.append(publicHeader.licenceType);
+    licBody.publicHeader.append("\",");
+
+    licBody.publicHeader.append("\"items\":[");
+
+    lIdentification.licItemsCount = std::distance(xmlDoc->child("licence").child("items").begin(), xmlDoc->child("licence").child("items").end());
+
+    int nodeIndex = 0;
+    int itemIndex = 0;
+
+    for (pugi::xml_node licItemNode : xmlDoc->child("licence").child("items"))
+    {
+      licBody.publicHeader.append("{");
+      nodeIndex = 0;
+      itemIndex++;
+      for (pugi::xml_node child : licItemNode.children())
+      {
+        nodeIndex++;
+        if (nodeIndex == 1)
+        {
+          licBody.publicHeader.append("\"name\":\"");
+          licBody.publicHeader.append(child.child_value());
+          licBody.publicHeader.append("\",");
+          continue;
+        }
+        if (nodeIndex == 3)
+        {
+          licBody.publicHeader.append("\"dataPointsCount\":\"");
+          licBody.publicHeader.append(child.child_value());
+          licBody.publicHeader.append("\"");
+        }
+      }
+      if (itemIndex != lIdentification.licItemsCount)
+      {
+        licBody.publicHeader.append("},");
+      }
+      else
+      {
+        licBody.publicHeader.append("}");
+      }
+    }
+
+    licBody.publicHeader.append("]");
+    licBody.publicHeader.append("}");
+  }
+
+  string Licence3::getVersion(int middleVersion)
+  {
+    string result = "";
+    result.append(to_string(generatorVersion));
+    result.append(".");
+    result.append(to_string(middleVersion));
+    result.append(".");
+    string tempLicenceCount = "1";
+    result.append(tempLicenceCount);
+    return result;
+  }
+
+  bool Licence3::processInputConfiguration()
+  {
+    const char *dataRootName = "licence";
+
+    string licType = xmlDoc->child(dataRootName).child("licenceType").child_value();
+    if (!licType.empty())
+    {
+      this->lIdentification.licLicenceType = mapping.licMapTypes[licType]; // LicenceType::EOS_EOV;
+      this->lIdentification.licTypeName = licType;
+    }
+    else
+    {
+      errorMessage.code = (int)GeneralError::LicenceMismatch;
+      errorMessage.message = "ERROR MISSING licenceType";
+      return false;
+    }
+
+    this->lIdentification.licenceVersion = atoi(&xmlDoc->child(dataRootName).child("licenceType").attribute("licenceVersion").value()[0]);
+    this->lIdentification.revision = atoi(&xmlDoc->child(dataRootName).attribute("revision").value()[0]);
+    this->lIdentification.licenceIndex = atoi(&xmlDoc->child(dataRootName).child("licenceType").attribute("licenceIndex").value()[0]);
+    this->lIdentification.licElcType = (ELCType)atoi(&xmlDoc->child(dataRootName).attribute("elc").value()[0]);
+
+    this->lIdentification.licCompatibility = atoi(&xmlDoc->child(dataRootName).attribute("compatibility").value()[0]);
+
+    string plcType = xmlDoc->child(dataRootName).child("plcType").child_value();
+    if (!plcType.empty())
+    {
+      this->lIdentification.licPlcType = mapping.licMapPlcType[plcType];
+    }
+
+    this->projectDescription = &xmlDoc->child(dataRootName).child("project").child_value()[0];
+
+    licBody.licenceIdentHeader.compatibilityVersion = this->lIdentification.licCompatibility;
+    licBody.licenceIdentHeader.licenceIndex = this->lIdentification.licenceIndex;
+    licBody.licenceIdentHeader.licenceType = (BYTE)this->lIdentification.licLicenceType;
+    licBody.licenceIdentHeader.licenceTypeVersion = this->lIdentification.licenceVersion;
+    return true;
+  }
+
+  void Licence3::getLicenceItems()
+  {
+    int nodeIndex = 0;
+    int itemIndex = 0;
+
+    for (pugi::xml_node licItemNode : xmlDoc->child("licence").child("items"))
+    {
+      licDataItem item;
+
+      item.protoId = atoi(licItemNode.child("protoId").child_value());
+      item.licCount = atoi(licItemNode.child("dataPointsCount").child_value());
+
+      this->licBody.privateContent.dataItems.push_back(item);
+
+      nodeIndex = 0;
+      itemIndex++;
+      for (pugi::xml_node child : licItemNode.children())
+      {
+        nodeIndex++;
+        if (nodeIndex == 1)
+        {
+          licBody.publicHeader.append("\"name\":\"");
+          licBody.publicHeader.append(child.child_value());
+          licBody.publicHeader.append("\",");
+          continue;
+        }
+        if (nodeIndex == 3)
+        {
+          licBody.publicHeader.append("\"dataPointsCount\":\"");
+          licBody.publicHeader.append(child.child_value());
+          licBody.publicHeader.append("\"");
+        }
+      }
+      if (itemIndex != lIdentification.licItemsCount)
+      {
+        licBody.publicHeader.append("},");
+      }
+      else
+      {
+        licBody.publicHeader.append("}");
+      }
+    }
+  }
+
+  bool Licence3::createLicence()
+  {
+    getLicenceItems();
+    getHeader();
+
+    this->licBody.licenceIdentHeader.licItemCount = this->licBody.privateContent.dataItems.size();
+    this->licBody.licenceIdentHeader.publicHeaderLength = this->licBody.publicHeader.length();
+
+    vector<unsigned char> publicContent{};
+    vector<unsigned char> privateContent{};
+    vector<unsigned char> privateContentEncrypted{};
+
+    publicContent.push_back(this->licBody.licId.licIdent[0]);
+    publicContent.push_back(this->licBody.licId.licIdent[1]);
+    publicContent.push_back(this->licBody.licId.licIdent[2]);
+    publicContent.push_back(((char)48 + (int)this->lIdentification.licElcType));
+    publicContent.push_back(this->licBody.licId.licIdent[4]);
+
+    publicContent.push_back(this->licBody.licenceIdentHeader.licenceType);
+    publicContent.push_back(this->licBody.licenceIdentHeader.licenceTypeVersion);
+    publicContent.push_back(this->licBody.licenceIdentHeader.licenceIndex);
+    publicContent.push_back(this->licBody.licenceIdentHeader.compatibilityVersion);
+    publicContent.push_back(this->licBody.privateContent.dataItems.size());
+    publicContent.push_back(this->licBody.licenceIdentHeader.publicHeaderLength & 0xFF);
+    publicContent.push_back((this->licBody.licenceIdentHeader.publicHeaderLength >> 8) & 0xFF);
+    
+    appendStringToVector(this->licBody.publicHeader, publicContent);
+
+#ifdef CRCCHECK
+    cout << "CRC public size: " << publicContent.size() << "\n";
+    cout << "CRC gen public: " << calculateCRC16(publicContent) << "\n";
+#endif
+
+    privateContent.push_back(this->licBody.licenceIdentHeader.licenceType);
+    privateContent.push_back(this->licBody.licenceIdentHeader.licenceTypeVersion);
+    privateContent.push_back(this->licBody.licenceIdentHeader.licenceIndex);
+    privateContent.push_back(this->licBody.licenceIdentHeader.compatibilityVersion);
+    privateContent.push_back(this->licBody.privateContent.dataItems.size());
+    privateContent.push_back(this->licBody.licenceIdentHeader.publicHeaderLength & 0xFF);
+    privateContent.push_back((this->licBody.licenceIdentHeader.publicHeaderLength >> 8) & 0xFF);
+    
+    privateContent.push_back(1);
+    privateContent.push_back(1);
+    privateContent.push_back(1);
+
+    for (licDataItem dataItem : this->licBody.privateContent.dataItems)
+    {
+      privateContent.push_back(dataItem.protoId & 0xFF);
+      privateContent.push_back((dataItem.protoId >> 8) & 0xFF);
+      privateContent.push_back((dataItem.protoId >> 16) & 0xFF);
+      privateContent.push_back((dataItem.protoId >> 24) & 0xFF);
+      privateContent.push_back(dataItem.licCount & 0xFF);
+      privateContent.push_back((dataItem.licCount >> 8) & 0xFF);
+      privateContent.push_back((dataItem.licCount >> 16) & 0xFF);
+      privateContent.push_back((dataItem.licCount >> 24) & 0xFF);
+    }
+
+#ifdef CRCCHECK
+    cout << "CRC private size: " << privateContent.size() << "\n";
+    cout << "CRC gen private: " << calculateCRC16(privateContent) << "\n";
+#endif
+
+    vector<unsigned char> completeVector = joinVectors(publicContent, privateContent);
+    uint16_t crcComplete = calculateCRC16(completeVector);
+
+#ifdef CRCCHECK
+    cout << "CRC complete size: " << completeVector.size() << "\n";
+    cout << "CRC gen complete: " << crcComplete << "\n";
+#endif
+
+    privateContent.push_back(crcComplete & 0xFF);
+    privateContent.push_back((crcComplete >> 8) & 0xFF);
+
+    // cout << "crc complete: " << crcComplete << "\n";
+
+    // cout << "privateContent length: " << privateContent.size() << "\n";
+    //  for (auto x : privateContent) cout << (int)x << "-";
+    // cout << "\n";
+
+    privateContentEncrypted = cryptPrivateContent(privateContent);
+
+    // cout << "privateContentEncrypted length: " << privateContentEncrypted.size() << "\n";
+    //  for (auto x : privateContentEncrypted) cout << (int)x << "-";
+    // cout << "\n";
+
+    string licfileName = getLicenceName();
+    std::ofstream outputFile(licfileName, std::ios::out | std::ios::binary);
+
+    // Check if the file is open
+    if (!outputFile.is_open())
+    {
+      throw LicenceException((int)GeneralError::FileOpenError, "Chyba při zakládání souboru licence: " + uid_path);
+    }
+
+    std::copy(publicContent.cbegin(), publicContent.cend(), std::ostream_iterator<unsigned char>(outputFile));
+    std::copy(privateContentEncrypted.cbegin(), privateContentEncrypted.cend(), std::ostream_iterator<unsigned char>(outputFile));
+
+    outputFile.close();
+
+    cout << licfileName;
+    return true;
+  }
 }
-
-
diff --git a/src/reader/LicenceReader.cpp b/src/reader/LicenceReader.cpp
index 59eda7d..8b1465c 100644
--- a/src/reader/LicenceReader.cpp
+++ b/src/reader/LicenceReader.cpp
@@ -110,6 +110,11 @@ bool LicenceReader::initread(int elcType, InitStructure &initStructure)
       }
       case ELCType::ELC3:
       {
+        Reader::Licence3 licenceELC3 = Reader::Licence3(this->licIdentification);
+        this->licence3 = &licenceELC3;
+        licenceELC3.licenceFilePath = initStructure.licenceFilePath;
+        this->licence3->readLicence(&this->licencesInfo);
+        this->licInfo.licenceFileName = this->licence3->licFileName;
         break;
       }
       default:
@@ -188,6 +193,32 @@ bool LicenceReader::getLicenceItemInfo(int protocolId, void *returnItemStructure
     }
     case ELCType::ELC3:
     {
+      if (!this->licIdentification.licCompatibility) // defaultní kompatibilita
+      {
+        LicenceELC3Item *resultPtr = static_cast<LicenceELC3Item *>(returnItemStructure);
+        resultPtr->protocolId = protocolId;
+        if (this->licencesInfo.licences.count(protocolId))
+          resultPtr->dataPointsCount = this->licencesInfo.licences.at(protocolId);
+        else
+        {
+          resultPtr->dataPointsCount = 0;
+          error.code = 0;
+          error.message = "Protokol: " + to_string(protocolId) + " nemá licenční body";
+          return false;
+        }
+      }
+      else
+      {
+        switch (this->licIdentification.licCompatibility)
+        {
+        case 1:
+          // kod pro kompatibilitu 1
+          break;
+        default:
+          LicenceException((int)GeneralError::CompatibilityTypeNotImplemented, "Kompatibilita není implementována.");
+          break;
+        }
+      }
       break;
     }
     default:
diff --git a/src/reader/licReaderELC3.cpp b/src/reader/licReaderELC3.cpp
index 5411c1f..dd531d6 100644
--- a/src/reader/licReaderELC3.cpp
+++ b/src/reader/licReaderELC3.cpp
@@ -1,11 +1,218 @@
 #ifndef EZ_APPLICATION_LICENCE_DISABLE
 
 #include "licReaderELC3.h"
+// #define SHOW 1
 
 namespace Reader
 {
-}
 
+  Licence3::Licence3() {}
+
+  Licence3::~Licence3() {}
+
+  Licence3::Licence3(LicenceIdentification &licIdentification) : LicenceELC3(licIdentification)
+  {
+  }
+
+  /// @brief načte seznam licenčních bodů do obecné struktury
+  /// @param licences
+  /// @return
+  bool Licence3::readLicence(LicenceInfoGeneral *licences)
+  {
+
+    //uid load
+    if (getUID() == false) throw LicenceException((int)GeneralError::UIDReadError, "Nepodařilo se načíst UID: " + uid_path);
+    
+    string licFileName = getLicenceName();
+    string licFilePath = this->licenceFilePath + licFileName;
+
+    this->licFileName = licFileName;
+    this->licenceFilePath = licFilePath;
+
+    vector<char> content{};
+    if (readFile(licFilePath, content) == false)
+    {
+      throw LicenceException((int)GeneralError::FileOpenError, "Chyba otevření souboru licence: " + licFilePath);
+    }
+
+
+
+#ifdef SHOW
+    cout << "Celý vstup zašifrovaný: \n";
+    for (const auto &x : content)
+      cout << (int)x << "-";
+    cout << "\n";
 #endif
 
+    this->licBody.licId.licIdent[0] = content[0];
+    this->licBody.licId.licIdent[1] = content[1];
+    this->licBody.licId.licIdent[2] = content[2];
+    this->licBody.licId.licIdent[3] = content[3];
+    this->licBody.licId.licIdent[4] = content[4];
 
+    this->licBody.licenceIdentHeader.licenceType = content[5];
+    this->licBody.licenceIdentHeader.licenceTypeVersion = content[6];
+    this->licBody.licenceIdentHeader.licenceIndex = content[7];
+    this->licBody.licenceIdentHeader.compatibilityVersion = content[8];
+    this->licBody.licenceIdentHeader.licItemCount = content[9];
+    this->licBody.licenceIdentHeader.publicHeaderLength = bytesToWord(content[10], content[11]);
+    
+    int elcVersion = (int)licBody.licId.licIdent[3] - 48; // verze je text, musí se odečíst 48
+
+    if (elcVersion != (int)this->lIdentification.licElcType)
+    {
+      throw LicenceException((int)GeneralError::ELCMismatch, "Nesouhlasí ELC.");
+    }
+
+    vector<unsigned char> publicPart(content.begin(), content.begin() + 12 + this->licBody.licenceIdentHeader.publicHeaderLength);
+
+
+#ifdef CRCCHECK
+    cout << "CRC read public size: " << publicPart.size() << "\n";
+    cout << "CRC read public: " << calculateCRC16(publicPart) << "\n";
+#endif
+
+#ifdef SHOW
+    cout << "\n public header length: " << licBody.licenceIdentHeader.publicHeaderLength << "\n";
+#endif
+
+    vector<unsigned char> encryptedPart{};
+
+    for (unsigned int i = licBody.licenceIdentHeader.publicHeaderLength + 12; i<content.size(); i++)
+    {
+      encryptedPart.push_back(content[i]);
+    }
+
+
+
+    vector<unsigned char> privateContentDecrypted{};
+    privateContentDecrypted = decryptPrivateContent(encryptedPart);
+
+
+
+#ifdef SHOW
+    cout << "private encryptedsize: " << encryptedPart.size() << "\n";
+    cout << "private decryptedsize: " << privateContentDecrypted.size() << "\n";
+    cout << "private decrypted: \n";
+    for (const auto &x : privateContentDecrypted)
+      cout << (int)x << "-";
+    cout << "\n";
+#endif
+
+#ifdef CRCCHECK
+    cout << "CRC read private size: " << privateContentDecrypted.size() << "\n";
+    cout << "CRC read private: " << calculateCRC16(privateContentDecrypted) << "\n";
+#endif
+
+    LicenceBody licBodyDecrypted;
+    licBodyDecrypted.licenceIdentHeader.licenceType = privateContentDecrypted[0];
+    licBodyDecrypted.licenceIdentHeader.licenceTypeVersion = privateContentDecrypted[1];
+    licBodyDecrypted.licenceIdentHeader.licenceIndex = privateContentDecrypted[2];
+    licBodyDecrypted.licenceIdentHeader.compatibilityVersion = privateContentDecrypted[3];
+    licBodyDecrypted.licenceIdentHeader.licItemCount = privateContentDecrypted[4];
+    licBodyDecrypted.licenceIdentHeader.publicHeaderLength = bytesToWord(privateContentDecrypted[5], privateContentDecrypted[6]);
+    
+    if (licBodyDecrypted.licenceIdentHeader.licItemCount != this->licBody.licenceIdentHeader.licItemCount)
+    {
+      throw LicenceException((int)GeneralError::ItemsCountMismatch, "Nesouhlasí počet položek licence.");
+    }
+
+#ifdef SHOW
+    cout << "velikost: " << sizeof(licBodyDecrypted.licenceIdentHeader) << "\n";
+#endif
+
+    int index = 10;
+    for (int i = 0; i < this->licBody.licenceIdentHeader.licItemCount; i++)
+    {
+      licDataItem item{};
+      item.protoId = bytesToDword(privateContentDecrypted[index], privateContentDecrypted[index + 1], privateContentDecrypted[index + 2], privateContentDecrypted[index + 3]);
+      item.licCount = bytesToDword(privateContentDecrypted[index + 4], privateContentDecrypted[index + 5], privateContentDecrypted[index + 7], privateContentDecrypted[index + 7]);
+      index += sizeof(licDataItem);
+      this->licBody.privateContent.dataItems.push_back(item);
+      this->licenceInfo.licences.insert(pair<DWORD, DWORD>(item.protoId, item.licCount));
+      licences->licences.insert(pair<DWORD, DWORD>(item.protoId, item.licCount));
+    }
+
+    uint16_t crcComplete = bytesToWord(privateContentDecrypted[index], privateContentDecrypted[index + 1]);
+    vector<unsigned char> completeVector = joinVectors(publicPart, privateContentDecrypted);
+
+    uint16_t crcCalculated = calculateCRC16(completeVector, 2);
+
+#ifdef SHOW
+    // cout << "content: \n";
+    // for (const auto x : content) cout << (int)x << "-";
+
+    cout << "\nvector: \n";
+    for (const auto x : completeVector)
+      cout << (int)x << "-";
+    cout << "\n";
+    cout << "crcComplete: " << crcComplete << "\n";
+    cout << "crcCalculated: " << crcCalculated << "\n";
+    cout << "vectorsize: " << completeVector.size() << "\n";
+    cout << "public vector size: " << publicPart.size() << "\n";
+    cout << "private vector size: " << privateContentDecrypted.size() << "\n";
+    for (const auto &pair : this->licenceInfo.licences)
+    {
+      cout << "--<" << pair.first << ", " << pair.second << ">--" << endl;
+    }
+#endif
+
+    if (crcCalculated != crcComplete) throw LicenceException((int)GeneralError::LicenceCRCMismatch, "Nesouhlasí CRC.");
+
+    return true;
+  }
+
+  bool Licence3::getLicenceInfo(void *returnStructure)
+  {
+    if (returnStructure != nullptr)
+    {
+      LicenceELC2Info *resultPtr = static_cast<LicenceELC2Info *>(returnStructure);
+      for (auto item : this->licBody.privateContent.dataItems)
+      {
+        resultPtr->licences.insert(pair<int, int>(item.protoId, item.licCount));
+      }
+    }
+    else
+    {
+      errorMessage.code = 1;
+      errorMessage.message = "Error: Null pointer!";
+      return false;
+    }
+
+    return true;
+  }
+
+  bool Licence3::getUID()
+  {
+    vector<char> content;
+    if (readFile(this->uid_path + "machine-id", content) == false)
+    {
+      return false;
+    }
+
+    this->uid = string(content.begin(), content.end()); 
+
+    return true;
+  }
+
+}
+
+/*
+vector<char> content;
+  if (readFile(this->filePath + "cid", content) == false)
+  {
+    return false;
+  }
+
+  if (content.size() >= CID_LENGTH)
+  {
+    for (int i = 0; i < 32; i++)
+      this->cid[i] = content[i];
+  }
+  else
+    return false;
+
+  return true;
+*/
+
+#endif