diff --git a/ccc-jni/src/main/java/io/malloc/ccc/MainActivity2.java b/ccc-jni/src/main/java/io/malloc/ccc/MainActivity2.java
new file mode 100644
index 0000000..5892c54
--- /dev/null
+++ b/ccc-jni/src/main/java/io/malloc/ccc/MainActivity2.java
@@ -0,0 +1,72 @@
+/*
+
+ */
+package io.malloc.ccc;
+
+import android.support.v4.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import com.wolfssl.wolfcrypt.Aes;
+import com.wolfssl.wolfcrypt.WolfCryptException;
+
+import io.malloc.ccc.Util;
+/*
+ * Simple Java UI to trigger jni function. It is exactly same as Java code
+ * in hello-jni.
+ */
+public class MainActivity extends AppCompatActivity {
+
+    private static final byte[] KEY = Util.h2b("00112233445566778899AABBCCDDEEFF");
+    private static final byte[] IV = Util.h2b("000102030405060708090A0B0C0D0E0F");
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+
+        //        Aes aes = new Aes();
+        //        TextView tv = new TextView(this);
+        //        tv.setText( stringFromJNI() );
+        //        setContentView(tv);
+    }
+//    public native String  stringFromJNI();
+    static {
+
+        System.loadLibrary("wolfssl-jni");
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+//        final Button button = (Button) findViewById(R.id.AESbutton);
+//        button.setOnClickListener(new View.OnClickListener() {
+//            public void onClick(View v) {
+//                checkSetKeyParams();
+//            }
+//        });
+    }
+
+    public void checkSetKeyParams() {
+        /* iv is optional, should not raise. */
+        Aes aes = new Aes(KEY, null, Aes.ENCRYPT_MODE);
+
+        try {
+            aes.setKey(null, IV, Aes.ENCRYPT_MODE);
+        } catch (WolfCryptException e) {
+            System.out.println("ERROR: WolfCrypt: J3G: "+e.getMessage());
+        }
+
+        aes.setKey(KEY, IV, Aes.ENCRYPT_MODE);
+        aes.releaseNativeStruct();
+
+        try {
+            aes.setKey(KEY, IV, Aes.ENCRYPT_MODE);
+        } catch (WolfCryptException e) {
+            System.out.println("ERROR: WolfCrypt: J3G: "+e.getMessage());
+        }
+    }
+}
+
diff --git a/ccc-jni/src/main/java/io/malloc/ccc/Util.java b/ccc-jni/src/main/java/io/malloc/ccc/Util.java
new file mode 100644
index 0000000..f5234f7
--- /dev/null
+++ b/ccc-jni/src/main/java/io/malloc/ccc/Util.java
@@ -0,0 +1,32 @@
+/*
+
+ */
+package io.malloc.ccc;
+
+class Util {
+    public static byte[] h2b(String s) {
+        int len = s.length();
+        byte[] data = new byte[len / 2];
+
+        for (int i = 0; i < len; i += 2) {
+            data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character
+                    .digit(s.charAt(i + 1), 16));
+        }
+
+        return data;
+    }
+
+    final protected static char[] hexArray = "0123456789ABCDEF".toCharArray();
+
+    public static String b2h(byte[] bytes) {
+        char[] hexChars = new char[bytes.length * 2];
+
+        for (int j = 0; j < bytes.length; j++) {
+            int v = bytes[j] & 0xFF;
+            hexChars[j * 2] = hexArray[v >>> 4];
+            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
+        }
+
+        return new String(hexChars);
+    }
+}
diff --git a/nc-libs/wolfssl-jni.aar b/nc-libs/wolfssl-jni.aar
new file mode 100644
index 0000000..8b60775
Binary files /dev/null and b/nc-libs/wolfssl-jni.aar differ