diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index 7d7ec2e..8fabff5 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
+    <bytecodeTargetLevel target="17" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 00d25f9..da919dc 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -7,6 +7,7 @@
         <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="Embedded JDK" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
new file mode 100644
index 0000000..2b8a50f
--- /dev/null
+++ b/.idea/kotlinc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="KotlinJpsPluginSettings">
+    <option name="version" value="1.8.0" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 7063837..8978d23 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,10 +1,9 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="Android Studio default JDK" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
 </project>
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index dca1124..cfa6401 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -19,6 +19,9 @@
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+
+            <meta-data android:name="android.nfc.action.TECH_DISCOVERED"
+                android:resource="@xml/tech_list" />
         </activity>
     </application>
     <uses-permission android:name="android.permission.NFC" />
diff --git a/app/src/main/cpp/api.cpp b/app/src/main/cpp/api.cpp
index fe4115d..52de155 100644
--- a/app/src/main/cpp/api.cpp
+++ b/app/src/main/cpp/api.cpp
@@ -794,6 +794,8 @@ void Connector::activeAuthentication(bytes m2) {
 
     // 256 is hardcoded
     // MRTD returns signature of size [sigLength] or of arbitrarily size if [sigLength] is 256.
+
+    logBytes("Internal auth with %s", m2);
     auto response = internalAuthenticate(m2, 256);
     auto message = response.data;
 
@@ -833,6 +835,7 @@ void Connector::activeAuthentication(bytes m2) {
                 break;
             default:
                 hashlen = 0;
+                LOGI("cannot detect hash type, wrong !!!!");
                 break;
         }
     }
@@ -863,8 +866,34 @@ void Connector::activeAuthentication(bytes m2) {
     bytes check_hash(160 / 8);
     SHA1(m1_m2.data(), m1_m2.size(), check_hash.data());
     bool verified = std::equal(hash.begin(), hash.end(), check_hash.begin());
+    verified &= hash.size() == check_hash.size();
 
     logBytes("hash %s", hash);
     logBytes("check hash %s", check_hash);
     LOGI("active authentication verified %d", verified);
+}
+
+void Connector::selectSAM() {
+    bytes command;
+    bytes response;
+
+     // 00A404000C4D4B4D4F43436C69656E7431
+//    command = {0, 164, 4, 0, 12, 77, 75, 77, 79, 67, 67, 108, 105, 101, 110, 116, 49};
+//    response = transceive(command);
+//    command = {0x80, 0x50, 0, 0, 0x20};
+//    response = transceive(command);
+//
+//    bytes random = response;
+//    logBytes("random %s", random);
+
+    // 00A404000CA000000063504B43532D3135
+    command = {0, 164, 4, 0, 12, 160, 0, 0, 0, 99, 80, 75, 67, 83, 45, 49, 53};
+    response = transceive(command);
+    logBytes("SAM selected %s", response);
+
+    // get pubkey
+    // 00F1000100
+    command = {00, 0xf1, 00, 01, 00};
+    response = transceive(command);
+    logBytes("pubkey %s", response);
 }
\ No newline at end of file
diff --git a/app/src/main/cpp/api.h b/app/src/main/cpp/api.h
index 561129a..1cedf15 100644
--- a/app/src/main/cpp/api.h
+++ b/app/src/main/cpp/api.h
@@ -298,6 +298,8 @@ public:
     void readEFSOD();
 
     void activeAuthentication(bytes challenge);
+
+    void selectSAM();
 };
 
 #endif //CCCC_API_H
diff --git a/app/src/main/cpp/des.cpp b/app/src/main/cpp/des.cpp
index 0afdf93..702fa63 100644
--- a/app/src/main/cpp/des.cpp
+++ b/app/src/main/cpp/des.cpp
@@ -232,12 +232,16 @@ uint64_t iso9797_mac(bytes data, uint64_t key1, uint64_t key2, uint64_t key3, bo
     bytes msg = data;
     if (pad) iso9797_pad(msg);
 
+    logBytes("eifd padded %s", msg);
     bytes mac = des_encrypt(msg, key1);
     mac.erase(mac.begin(), mac.end() - 8);
 
     uint64_t mac_value = bytes2num(mac);
+    LOGI("mac1 %llx", mac_value);
     mac_value = des(mac_value, key2, 'd');
+    LOGI("mac2 %llx", mac_value);
     mac_value = des(mac_value, key3, 'e');
+    LOGI("mac3 %llx", mac_value);
     return mac_value;
 }
 
diff --git a/app/src/main/cpp/native-lib.cpp b/app/src/main/cpp/native-lib.cpp
index b1de966..29087ff 100644
--- a/app/src/main/cpp/native-lib.cpp
+++ b/app/src/main/cpp/native-lib.cpp
@@ -22,22 +22,24 @@ Java_com_bshield_cccc_MainActivity_initNFCScan(
 
     // TODO: move to connector class
 
-    connector->selectDf1();
-    connector->initBAC();
+    connector->selectSAM();
 
-    connector->readEFCOM();
-    connector->readEFDG1();
-    connector->readEFDG2();
-    connector->readEFDG13();
-    connector->readEFDG14();
-    connector->readEFDG15();
-
-    connector->readEFSOD();
-
-    bytes challenge = randomBytes(8);
-    connector->activeAuthentication(challenge);
-
-    connector->ready = true;
+//    connector->selectDf1();
+//    connector->initBAC();
+//
+//    connector->readEFCOM();
+//    connector->readEFDG1();
+//    connector->readEFDG2();
+//    connector->readEFDG13();
+//    connector->readEFDG14();
+//    connector->readEFDG15();
+//
+//    connector->readEFSOD();
+//
+//    bytes challenge = randomBytes(8);
+//    connector->activeAuthentication(challenge);
+//
+//    connector->ready = true;
     return 1;
 }
 
diff --git a/app/src/main/java/com/bshield/cccc/MainActivity.kt b/app/src/main/java/com/bshield/cccc/MainActivity.kt
index 331dbf6..d670ff0 100644
--- a/app/src/main/java/com/bshield/cccc/MainActivity.kt
+++ b/app/src/main/java/com/bshield/cccc/MainActivity.kt
@@ -6,9 +6,11 @@ import android.nfc.NfcAdapter
 import android.nfc.NfcAdapter.ACTION_ADAPTER_STATE_CHANGED
 import android.nfc.NfcAdapter.getDefaultAdapter
 import android.nfc.tech.IsoDep
+import android.nfc.tech.NfcA
 import android.nfc.tech.TagTechnology
 import android.os.Bundle
 import android.text.InputType
+import android.util.Log
 import android.view.View
 import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
@@ -107,14 +109,16 @@ class MainActivity : AppCompatActivity() {
         super.onResume();
 
         nfcAdapter.enableReaderMode(this, {tag ->
+            Log.d("BRUH", tag.techList.joinToString())
             if (tag.techList.contains(IsoDep::class.java.name)) {
                 // type = "iso7816"
                 // standard = "ISO 14443-4 (Type B)"
                 val isoDep = IsoDep.get(tag)
+                (isoDep as IsoDep).timeout = 5000;
                 tagTechnology = isoDep
                 PerfomNFCScanning();
             }
-        }, (0x1 or 0x2), null);
+        }, (0x1 or 0x2 or 0x4 or 0x8 or 16 or 256), null);
 
         // Example of a call to a native method
         // binding.sampleText.text = "nfc enabled? ${nfcAdapter.isEnabled()}"
@@ -145,19 +149,19 @@ class MainActivity : AppCompatActivity() {
             return;
         }
 
-        if (binding.idnumber.text.length != 12) {
-            setError("ID number must be 12 digits");
-            return;
-        }
-
-        if (!::birthday.isInitialized) {
-            setError("Birthday is not entered");
-        }
-        if (!::expirydate.isInitialized) {
-            setError("Birthday is not entered");
-        }
-
-        val id = binding.idnumber.text.substring(3);
+//        if (binding.idnumber.text.length != 12) {
+//            setError("ID number must be 12 digits");
+//            return;
+//        }
+//
+//        if (!::birthday.isInitialized) {
+//            setError("Birthday is not entered");
+//        }
+//        if (!::expirydate.isInitialized) {
+//            setError("Birthday is not entered");
+//        }
+//
+//        val id = binding.idnumber.text.substring(3);
 
         fun checkdigit(digits: String): String {
             fun mapValue(x: Char): Int {
@@ -173,7 +177,8 @@ class MainActivity : AppCompatActivity() {
             return (hash % 10).toString();
         }
 
-        val passcode = id + checkdigit(id) + birthday + checkdigit(birthday) + expirydate + checkdigit(expirydate);
+//        val passcode = id + checkdigit(id) + birthday + checkdigit(birthday) + expirydate + checkdigit(expirydate);
+        val passcode = "098002079798112232311229";
 
         try {
             setError("Scanning the identity card");
diff --git a/app/src/main/res/xml/tech_list.xml b/app/src/main/res/xml/tech_list.xml
new file mode 100644
index 0000000..cc74788
--- /dev/null
+++ b/app/src/main/res/xml/tech_list.xml
@@ -0,0 +1,21 @@
+<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+    <!-- capture anything using NfcF -->
+    <tech-list>
+        <tech>android.nfc.tech.NfcF</tech>
+    </tech-list>
+
+    <!-- OR -->
+
+    <!-- capture all MIFARE Classics with NDEF payloads -->
+    <tech-list>
+        <tech>android.nfc.tech.NfcA</tech>
+        <tech>android.nfc.tech.NfcB</tech>
+        <tech>android.nfc.tech.NfcF</tech>
+        <tech>android.nfc.tech.NfcV</tech>
+        <tech>android.nfc.tech.IsoDep</tech>
+        <tech>android.nfc.tech.Ndef</tech>
+        <tech>android.nfc.tech.NdefFormatable</tech>
+        <tech>android.nfc.tech.MifareClassic</tech>
+        <tech>android.nfc.tech.MifareUltralight</tech>
+    </tech-list>
+</resources>
\ No newline at end of file