encryption code integrated

app/src/main/java/com/example/hpostesting/presentation/deviceprovision/DeviceProvisionFragment.kt

@@ -4,6 +4,8 @@ import android.content.Context
 import android.content.Intent
 import android.content.SharedPreferences
 import android.os.Bundle
+import android.os.Environment
+import android.provider.Settings
 import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
@@ -17,11 +19,15 @@ import com.example.hpostesting.data.constant.Constants
 import com.example.hpostesting.data.constant.HemoCubeCommands
 import com.example.hpostesting.data.model.deviceprovision.DeviceProvisionRequest
 import com.example.hpostesting.data.model.patient.DeviceData
+import com.example.hpostesting.encryption.Encryption
 import com.example.hpostesting.presentation.UsbServiceListener
 import com.example.hpostesting.presentation.dashboard.DashboardActivity
+import com.google.android.gms.ads.identifier.AdvertisingIdClient
 import com.google.firebase.crashlytics.ktx.crashlytics
 import com.google.firebase.ktx.Firebase
 import `in`.sminnovations.hpostesting.databinding.FragmentDeviceProvisionBinding
+import java.io.File
+import java.io.FileOutputStream
 
 class DeviceProvisionFragment : Fragment() {
     private var resultData: String = ""
@@ -122,6 +128,10 @@ class DeviceProvisionFragment : Fragment() {
                                 deviceUpdateAvailable = false
                             )
                         )
+                        encryptAndSaveToFile(
+                            response.data.data?.credentials?.username.toString(),
+                            response.data.data?.credentials?.password.toString()
+                        )
 //                        viewModel.addDeviceId(DeviceData(deviceId = sharedPreferences.getString(Constants.DEVICE_ID, "").toString()))
                         Log.e("idpass", response.toString())
                         Log.e("idpass", response.data.data?.credentials?.username.toString())
@@ -222,8 +232,26 @@ class DeviceProvisionFragment : Fragment() {
         }
     }
 
-    private fun encryptAndSaveToFile(){
+    private fun encryptAndSaveToFile(username: String, password: String) {
+        val messageToEncrypt = "deviceID\n$username\n$password"
+        val encryptionKey =
+            Settings.Secure.getString(context?.contentResolver, Settings.Secure.ANDROID_ID)
+        val encryptedString = Encryption.encrypt(messageToEncrypt, encryptionKey)
+        Log.d("DEVICE ID/encryptionKey", encryptionKey)
+        val target = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+        val file = File(target, "credentials.txt")
+
+        if (!file.exists()) {
+            file.createNewFile()
+        }
+
+        val fos = FileOutputStream(file)
+
+        file.writeText(encryptedString)
+
+        Log.d("Encrypted Message", encryptedString)
+        fos.close()
 
     }
+}
 
-}