Biometric setup done

app/build.gradle

@@ -153,7 +153,7 @@ dependencies {
     implementation 'com.android.support:cardview-v7:28.0.0'
     implementation 'com.theartofdev.edmodo:android-image-cropper:2.7.0'
     implementation 'com.scottyab:rootbeer-lib:0.0.7'
-    implementation 'com.github.heasley:RxFingerprint:1.0.1'
+    implementation 'com.mtramin:rxfingerprint:2.2.1'
     implementation project(':securitykeypad')
     implementation project(':SpinnerDatePickerLib-release')
 }

app/src/main/AndroidManifest.xml

@@ -11,6 +11,9 @@
     <uses-permission android:name="android.permission.READ_CONTACTS" />
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission android:name="android.permission.USE_FINGERPRINT" />
+    <uses-permission android:name="android.permission.USE_BIOMETRIC" />
+
 
     <application
         android:name=".GmeApplication"

app/src/main/java/com/gmeremit/online/gmeremittance_native/base/PrefKeys.java

@@ -47,4 +47,7 @@ public class PrefKeys {
     public static String USER_PREFERRED_LOCALE ="USER_PREFERRED_LOCALE";
     public static String USER_PREFERRED_LANGUAGE ="USER_PREFERRED_LANGUAGE";
     public static String USER_PREFERRED_COUNTRY_CODE ="USER_PREFERRED_COUNTRY_CODE";
+
+    public static String APP_FINGER_PRINT_ENABLED ="APP_FINGER_PRINT_ENABLED";
+    public static String APP_USER_SECRET_KEY ="APP_USER_SECRET_KEY";
 }

app/src/main/java/com/gmeremit/online/gmeremittance_native/settings/view/SettingsView.java

@@ -4,20 +4,32 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
+import android.util.Log;
 import android.view.View;
 
 import com.gmeremit.online.gmeremittance_native.GmeApplication;
 import com.gmeremit.online.gmeremittance_native.R;
 import com.gmeremit.online.gmeremittance_native.base.BaseActivity;
+import com.gmeremit.online.gmeremittance_native.base.PrefKeys;
 import com.gmeremit.online.gmeremittance_native.changepasswordV2.view.ChangePasswordV2Activity;
+import com.gmeremit.online.gmeremittance_native.customwidgets.CustomAlertDialog;
 import com.gmeremit.online.gmeremittance_native.settings.adapter.LanguageSelectionDialogRVAdapter;
 import com.gmeremit.online.gmeremittance_native.splash_screen.model.LanguageModel;
+import com.gmeremit.online.gmeremittance_native.transactionpasspromt.view.TransactionPasswordPromptActivity;
+import com.gmeremit.online.gmeremittance_native.utils.security.SecurityUtils;
+import com.mtramin.rxfingerprint.RxFingerprint;
+import com.mtramin.rxfingerprint.data.FingerprintEncryptionResult;
 
 import java.util.ArrayList;
 import java.util.List;
 
+import butterknife.BindView;
 import butterknife.ButterKnife;
 import butterknife.OnClick;
+import io.reactivex.Observer;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.schedulers.Schedulers;
 
 import static com.gmeremit.online.gmeremittance_native.base.PrefKeys.USER_PREFERRED_COUNTRY_CODE;
 import static com.gmeremit.online.gmeremittance_native.base.PrefKeys.USER_PREFERRED_LANGUAGE;
@@ -29,7 +41,11 @@ import static com.gmeremit.online.gmeremittance_native.base.PrefKeys.USER_PREFER
 
 public class SettingsView extends BaseActivity {
 
+    @BindView(R.id.view_fingerprint)
+    View view_fingerprint;
 
+    @BindView(R.id.view_fingerprint_divider)
+    View view_fingerprint_divider;
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -39,6 +55,11 @@ public class SettingsView extends BaseActivity {
 
     private void init() {
         ButterKnife.bind(this);
+        if(!SecurityUtils.doesAppHasBiometricFeature(this))
+        {
+            view_fingerprint.setVisibility(View.GONE);
+            view_fingerprint_divider.setVisibility(View.GONE);
+        }
     }
 
     @OnClick({R.id.view_change_password, R.id.iv_back, R.id.view_language, R.id.view_fingerprint})
@@ -58,7 +79,7 @@ public class SettingsView extends BaseActivity {
                 break;
 
             case R.id.view_fingerprint:
-                promptForFingerprintAuth();
+                mockEncryption("1234");
                 break;
         }
     }
@@ -67,6 +88,41 @@ public class SettingsView extends BaseActivity {
 
     }
 
+    private void mockEncryption(String abc) {
+
+        SecurityUtils.encryptSecret(this, abc)
+                .doOnSubscribe(subs->showProgressBar(true,getString(R.string.processing_request_text)))
+                .doFinally(()->showProgressBar(false,""))
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(new Observer<FingerprintEncryptionResult>() {
+                    @Override
+                    public void onSubscribe(Disposable d) {
+
+                    }
+
+                    @Override
+                    public void onNext(FingerprintEncryptionResult fingerprintEncryptionResult) {
+                        if(fingerprintEncryptionResult.isSuccess()) {
+                            showPopUpMessage("Now you can use your fingerprint to perform transactions",CustomAlertDialog.AlertType.SUCCESS,action->GmeApplication.getStorage().edit().putString(PrefKeys.APP_USER_SECRET_KEY, fingerprintEncryptionResult.getEncrypted()).apply());
+                        }
+                        else
+                            showPopUpMessage(fingerprintEncryptionResult.getMessage(),CustomAlertDialog.AlertType.FAILED,null);
+                    }
+
+                    @Override
+                    public void onError(Throwable e) {
+                        showPopUpMessage(e.getMessage(),CustomAlertDialog.AlertType.FAILED,null);
+                    }
+
+                    @Override
+                    public void onComplete() {
+
+                    }
+                });
+    }
+
+
 
     private void promptLanguageSelectionDialog() {
         LanguageSelectionListingDialog languageSelectionDialog = new LanguageSelectionListingDialog();

app/src/main/java/com/gmeremit/online/gmeremittance_native/transactionpasspromt/gateway/TransactionPasswordPromptV2Gateway.java

@@ -1,5 +1,6 @@
 package com.gmeremit.online.gmeremittance_native.transactionpasspromt.gateway;
 
+import com.gmeremit.online.gmeremittance_native.GmeApplication;
 import com.gmeremit.online.gmeremittance_native.base.PrivilegedGateway;
 import com.gmeremit.online.gmeremittance_native.transactionpasspromt.presenter.TransactionPasswordPromptV2InteractorInterface;
 import com.gmeremit.online.gmeremittance_native.utils.https.HttpClientV2;
@@ -8,6 +9,9 @@ import com.google.gson.JsonObject;
 import io.reactivex.Observable;
 import okhttp3.ResponseBody;
 
+import static com.gmeremit.online.gmeremittance_native.base.PrefKeys.APP_FINGER_PRINT_ENABLED;
+import static com.gmeremit.online.gmeremittance_native.base.PrefKeys.APP_USER_SECRET_KEY;
+
 public class TransactionPasswordPromptV2Gateway extends PrivilegedGateway implements TransactionPasswordPromptV2InteractorInterface.TransactionPasswordPromptV2GatewayInterface {
 
     private final TransactionPasswordPromptV2InteractorInterface interactor;
@@ -25,4 +29,14 @@ public class TransactionPasswordPromptV2Gateway extends PrivilegedGateway implem
 
         return HttpClientV2.getInstance().requestOTPForSendMoney(auth,jsonObject);
     }
+
+    @Override
+    public boolean isFingerPrintEnabled() {
+        return GmeApplication.getStorage().getBoolean(APP_FINGER_PRINT_ENABLED,false);
+    }
+
+    @Override
+    public String getStoredSecretKey() {
+        return GmeApplication.getStorage().getString(APP_USER_SECRET_KEY,"");
+    }
 }

app/src/main/java/com/gmeremit/online/gmeremittance_native/transactionpasspromt/presenter/TransactionPasswordPromptV2InteractorInterface.java

@@ -11,5 +11,9 @@ public interface TransactionPasswordPromptV2InteractorInterface extends BaseInte
     interface TransactionPasswordPromptV2GatewayInterface extends PrivilegedGatewayInterface
     {
         Observable<ResponseBody> requestOtp(String auth, String Uid,String amount,String kftc);
+
+        boolean isFingerPrintEnabled();
+
+        String getStoredSecretKey();
     }
 }

app/src/main/java/com/gmeremit/online/gmeremittance_native/transactionpasspromt/presenter/TransactionPasswordPromptV2Presenter.java

@@ -8,6 +8,7 @@ import com.gmeremit.online.gmeremittance_native.utils.Constants;
 import com.gmeremit.online.gmeremittance_native.utils.https.GenericApiObserverResponseV2;
 import com.gmeremit.online.gmeremittance_native.utils.https.GenericResponseDataModel;
 import com.gmeremit.online.gmeremittance_native.utils.https.MessageResponseDataModel;
+import com.gmeremit.online.gmeremittance_native.utils.security.SecurityUtils;
 import com.google.gson.reflect.TypeToken;
 
 import java.lang.reflect.Type;
@@ -16,7 +17,7 @@ import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.disposables.CompositeDisposable;
 import io.reactivex.schedulers.Schedulers;
 
-public class TransactionPasswordPromptV2Presenter extends BasePresenter implements TransactionPasswordPromptV2PresenterInterface,TransactionPasswordPromptV2InteractorInterface {
+public class TransactionPasswordPromptV2Presenter extends BasePresenter implements TransactionPasswordPromptV2PresenterInterface, TransactionPasswordPromptV2InteractorInterface {
 
     private final TransactionPasswordPromptV2PresenterInterface.TransactionPasswordPromptV2ContractInterface view;
     private final TransactionPasswordPromptV2InteractorInterface.TransactionPasswordPromptV2GatewayInterface gateway;
@@ -26,29 +27,27 @@ public class TransactionPasswordPromptV2Presenter extends BasePresenter implemen
     private String selectedKftcId;
 
     public TransactionPasswordPromptV2Presenter(TransactionPasswordPromptV2PresenterInterface.TransactionPasswordPromptV2ContractInterface view) {
-        this.view=view;
-        this.gateway=new TransactionPasswordPromptV2Gateway(this);
+        this.view = view;
+        this.gateway = new TransactionPasswordPromptV2Gateway(this);
         this.compositeDisposable = new CompositeDisposable();
-        this.updateCountdownValue =-1;
-        this.selectedKftcId="";
-        this.selectedAmount="";
+        this.updateCountdownValue = -1;
+        this.selectedKftcId = "";
+        this.selectedAmount = "";
 
     }
 
     @Override
     public void getOtp() {
-        if(updateCountdownValue==-1) {
+        if (updateCountdownValue == -1) {
             this.compositeDisposable.add(
-                    this.gateway.requestOtp(this.gateway.getAuth(), this.gateway.getUserID(),selectedAmount,selectedKftcId)
+                    this.gateway.requestOtp(this.gateway.getAuth(), this.gateway.getUserID(), selectedAmount, selectedKftcId)
                             .doOnSubscribe(disposable -> view.showProgressBar(true, getStringfromStringId(R.string.requesting_otp_text)))
                             .doFinally(() -> view.showProgressBar(false, ""))
                             .subscribeOn(Schedulers.io())
                             .observeOn(AndroidSchedulers.mainThread())
                             .subscribeWith(new ResendRequestObserver())
             );
-        }
-        else
-        {
+        } else {
             view.showResendRequestView(false);
             view.startCountdownView(updateCountdownValue);
         }
@@ -57,7 +56,7 @@ public class TransactionPasswordPromptV2Presenter extends BasePresenter implemen
 
     @Override
     public void updateCountdown(long millisUntilFinished) {
-        this.updateCountdownValue =millisUntilFinished;
+        this.updateCountdownValue = millisUntilFinished;
     }
 
     @Override
@@ -67,26 +66,33 @@ public class TransactionPasswordPromptV2Presenter extends BasePresenter implemen
 
     @Override
     public void updateSelectedAmount(String selectedAmount) {
-        if(selectedAmount==null)
-            selectedAmount="";
-        this.selectedAmount=selectedAmount;
+        if (selectedAmount == null)
+            selectedAmount = "";
+        this.selectedAmount = selectedAmount;
     }
 
     @Override
     public void updateSelectedKftcId(String selectedKftcId) {
-        if(selectedKftcId==null)
-            selectedKftcId="";
-        this.selectedKftcId=selectedKftcId;
+        if (selectedKftcId == null)
+            selectedKftcId = "";
+        this.selectedKftcId = selectedKftcId;
     }
 
     @Override
     public boolean checkIfUserHasEnabledBiometricAuth() {
         return true;
+//        return gateway.isFingerPrintEnabled()&&SecurityUtils.doesAppHasBiometricFeature(view.getContext());
     }
 
+    @Override
+    public String getSecretKey() {
+        return gateway.getStoredSecretKey();
+
 
-    class ResendRequestObserver extends GenericApiObserverResponseV2<MessageResponseDataModel>
-    {
+    }
+
+
+    class ResendRequestObserver extends GenericApiObserverResponseV2<MessageResponseDataModel> {
 
         @Override
         protected Type setType() {
@@ -100,8 +106,7 @@ public class TransactionPasswordPromptV2Presenter extends BasePresenter implemen
                     view.showResendRequestView(false);
                     view.startCountdownView(120000);
                 });
-            }
-            else {
+            } else {
                 view.showPopUpMessage(response.getMsg(), CustomAlertDialog.AlertType.FAILED, alertType -> {
                     view.showResendRequestView(true);
                 });

app/src/main/java/com/gmeremit/online/gmeremittance_native/transactionpasspromt/presenter/TransactionPasswordPromptV2PresenterInterface.java

@@ -1,5 +1,7 @@
 package com.gmeremit.online.gmeremittance_native.transactionpasspromt.presenter;
 
+import android.content.Context;
+
 import com.gmeremit.online.gmeremittance_native.base.BaseContractInterface;
 import com.gmeremit.online.gmeremittance_native.base.BasePresenterInterface;
 
@@ -16,10 +18,17 @@ public interface TransactionPasswordPromptV2PresenterInterface extends BasePrese
 
     boolean checkIfUserHasEnabledBiometricAuth();
 
+    String getSecretKey();
+
+
 
     interface TransactionPasswordPromptV2ContractInterface extends BaseContractInterface {
         void startCountdownView(long durationMillisecond);
         void showResendRequestView(boolean action);
 
+        Context getContext();
+
+
+
     }
 }

app/src/main/java/com/gmeremit/online/gmeremittance_native/transactionpasspromt/view/TransactionPasswordPromptActivity.java

@@ -2,11 +2,11 @@ package com.gmeremit.online.gmeremittance_native.transactionpasspromt.view;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
+import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.graphics.Rect;
 import android.graphics.drawable.AnimatedVectorDrawable;
-import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.CountDownTimer;
@@ -29,6 +29,7 @@ import android.widget.ImageView;
 import android.widget.RelativeLayout;
 import android.widget.TextView;
 
+import com.gmeremit.online.gmeremittance_native.GmeApplication;
 import com.gmeremit.online.gmeremittance_native.R;
 import com.gmeremit.online.gmeremittance_native.base.BaseActivity;
 import com.gmeremit.online.gmeremittance_native.customwidgets.GmeErrorTextView;
@@ -38,12 +39,21 @@ import com.gmeremit.online.gmeremittance_native.utils.security.SecurityUtils;
 import com.gmeremit.online.gmeremittance_native.utils.security.securitykeypad.SecurityKeyboardManager;
 import com.gmeremit.online.gmeremittance_native.utils.security.securitykeypad.SecurityKeyboardView;
 import com.gmeremit.online.gmeremittance_native.utils.security.securitykeypad.SecurityKeypadRequestParamBuilder;
+import com.mtramin.rxfingerprint.RxFingerprint;
+import com.mtramin.rxfingerprint.data.FingerprintDecryptionResult;
+import com.mtramin.rxfingerprint.data.FingerprintEncryptionResult;
 import com.softsecurity.transkey.TransKeyActivity;
 
 import java.util.Locale;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
+import io.reactivex.Observable;
+import io.reactivex.ObservableSource;
+import io.reactivex.Observer;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.functions.Function;
+import io.reactivex.observers.DisposableObserver;
 
 public class TransactionPasswordPromptActivity extends BaseActivity implements SecurityKeyboardView.SecurityKeyboardFocusStateListener, TransactionPasswordPromptV2PresenterInterface.TransactionPasswordPromptV2ContractInterface, View.OnClickListener {
 
@@ -91,6 +101,9 @@ public class TransactionPasswordPromptActivity extends BaseActivity implements S
     private CountDownTimer countDownTimer;
     private AnimatedVectorDrawable fingerPrintAVD;
     private AnimatedVectorDrawableCompat fingerPrintAVDCompat;
+    private Disposable fingerPrintReaderSubs;
+
+    String TAG = "FingerPrintObserver";
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -169,14 +182,14 @@ public class TransactionPasswordPromptActivity extends BaseActivity implements S
     }
 
     private void setupFingerPrintIconIfRequired() {
-        //TODO if biometric is on
-        if (SecurityUtils.doesAppHasBiometricFeature(this) && presenter.checkIfUserHasEnabledBiometricAuth()) {
+        if (presenter.checkIfUserHasEnabledBiometricAuth()) {
             orTextView.setVisibility(View.VISIBLE);
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                 fingerPrintAVD = (AnimatedVectorDrawable) ContextCompat.getDrawable(this, R.drawable.avd_fingerprint_off_to_on);
             } else {
                 fingerPrintAVDCompat = (AnimatedVectorDrawableCompat) ContextCompat.getDrawable(this, R.drawable.avd_fingerprint_off_to_on);
             }
+
         } else {
             passwordPromptImageView.setBackgroundResource(R.drawable.ic_penny_test_pending);
         }
@@ -222,6 +235,8 @@ public class TransactionPasswordPromptActivity extends BaseActivity implements S
         securityKeyboardView.setSecurityKeyboardFocusStateListener(this);
         if (checkIfRequiredOTPScreen())
             resendRequest.setOnClickListener(this);
+        else if (presenter.checkIfUserHasEnabledBiometricAuth())
+            fingerPrintReaderSubs = startObservingFingerPrintScanner();
     }
 
     @Override
@@ -230,35 +245,63 @@ public class TransactionPasswordPromptActivity extends BaseActivity implements S
         securityKeyboardView.setSecurityKeyboardFocusStateListener(null);
         if (checkIfRequiredOTPScreen())
             resendRequest.setOnClickListener(null);
+        if (fingerPrintReaderSubs != null && !fingerPrintReaderSubs.isDisposed())
+            fingerPrintReaderSubs.dispose();
 
     }
 
     @Override
     protected void onResume() {
         super.onResume();
-        new Handler().postDelayed(this::animateFingerPrintAppearAnimationIfRequired, 400);
+        animateFingerPrintAppearAnimationIfRequired(true);
     }
 
     @Override
     protected void onPause() {
         super.onPause();
-        if (!checkIfRequiredOTPScreen() && SecurityUtils.doesAppHasBiometricFeature(this) && presenter.checkIfUserHasEnabledBiometricAuth())
-            new Handler().postDelayed(() -> passwordPromptImageView.setImageDrawable(null), 200);
+        animateFingerPrintAppearAnimationIfRequired(false);
+
     }
 
     @SuppressLint("NewApi")
-    private void animateFingerPrintAppearAnimationIfRequired() {
-        if (!checkIfRequiredOTPScreen()) {
-            if (fingerPrintAVD != null && !fingerPrintAVD.isRunning()) {
-                passwordPromptImageView.setImageDrawable(fingerPrintAVD);
-                fingerPrintAVD.start();
-            } else if (fingerPrintAVDCompat != null && !fingerPrintAVDCompat.isRunning()) {
-                passwordPromptImageView.setImageDrawable(fingerPrintAVDCompat);
-                fingerPrintAVDCompat.start();
-            }
+    private void animateFingerPrintAppearAnimationIfRequired(boolean action) {
+        if (!checkIfRequiredOTPScreen() && presenter.checkIfUserHasEnabledBiometricAuth() && action) {
+            new Handler().postDelayed(() -> {
+                if (fingerPrintAVD != null && !fingerPrintAVD.isRunning()) {
+                    passwordPromptImageView.setImageDrawable(fingerPrintAVD);
+                    fingerPrintAVD.start();
+                } else if (fingerPrintAVDCompat != null && !fingerPrintAVDCompat.isRunning()) {
+                    passwordPromptImageView.setImageDrawable(fingerPrintAVDCompat);
+                    fingerPrintAVDCompat.start();
+                }
+
+            }, 400);
+        } else {
+            new Handler().postDelayed(() -> {
+                passwordPromptImageView.setImageDrawable(null);
+            }, 200);
         }
     }
 
+    private Disposable startObservingFingerPrintScanner() {
+        return SecurityUtils.decryptSecret(this, presenter.getSecretKey())
+                .flatMap(authentication -> {
+                    Log.d(TAG, authentication.getResult().toString());
+                    switch (authentication.getResult()) {
+                        case FAILED:
+                            return io.reactivex.Observable.error(new SecurityUtils.FailedFingerPrintException(authentication.getMessage()));
+                        case HELP:
+                            return io.reactivex.Observable.error(new SecurityUtils.SensorNotReadyException(authentication.getMessage()));
+                        case AUTHENTICATED:
+                            return Observable.just(authentication);
+                        default:
+                            return io.reactivex.Observable.error(new Throwable(authentication.getMessage()));
+                    }
+
+                })
+                .subscribeWith(new FingerPrintScannerObserver());
+    }
+
     @Override
     public void onSecurityViewRecievedFocus() {
         if (securityKeyboardManager != null && !securityKeyboardManager.isKeyboardVisible())
@@ -338,6 +381,13 @@ public class TransactionPasswordPromptActivity extends BaseActivity implements S
         }
     }
 
+    @Override
+    public Context getContext() {
+        return this;
+    }
+
+
+
 
     @Override
     public void onBackPressed() {
@@ -416,4 +466,26 @@ public class TransactionPasswordPromptActivity extends BaseActivity implements S
 
 
     }
+
+    class FingerPrintScannerObserver extends DisposableObserver<FingerprintDecryptionResult> {
+
+
+        @Override
+        public void onNext(FingerprintDecryptionResult fingerprintAuthenticationResult) {
+            Intent returnIntent = new Intent();
+            returnIntent.putExtra(TRANSACTION_PWD_ENC_DATA, fingerprintAuthenticationResult.getDecrypted());
+            setResult(Activity.RESULT_OK, returnIntent);
+            finish();
+        }
+
+        @Override
+        public void onError(Throwable e) {
+
+        }
+
+        @Override
+        public void onComplete() {
+
+        }
+    }
 }

app/src/main/java/com/gmeremit/online/gmeremittance_native/utils/security/SecurityUtils.java

@@ -2,13 +2,53 @@ package com.gmeremit.online.gmeremittance_native.utils.security;
 
 import android.content.Context;
 
+import com.mtramin.rxfingerprint.EncryptionMethod;
 import com.mtramin.rxfingerprint.RxFingerprint;
+import com.mtramin.rxfingerprint.data.FingerprintAuthenticationResult;
+import com.mtramin.rxfingerprint.data.FingerprintDecryptionResult;
+import com.mtramin.rxfingerprint.data.FingerprintEncryptionResult;
+
+import io.reactivex.Observable;
+
 
 public class SecurityUtils {
 
+    private static final String KEY_STORE_SECRET_ALIAS="gmeSecret321";
+
     public static boolean doesAppHasBiometricFeature(Context context)
     {
-//        return RxFingerprint.isAvailable(context);
-        return true;
+        return RxFingerprint.isAvailable(context);
+    }
+
+    public static Observable<FingerprintEncryptionResult> encryptSecret(Context context, String secret)
+    {
+        return RxFingerprint.encrypt(EncryptionMethod.RSA,context,KEY_STORE_SECRET_ALIAS,secret);
     }
+
+    public static Observable<FingerprintDecryptionResult> decryptSecret(Context context, String secret)
+    {
+        return RxFingerprint.decrypt(EncryptionMethod.RSA,context,KEY_STORE_SECRET_ALIAS,secret);
+    }
+
+    public static Observable<FingerprintAuthenticationResult> authenticateFingerPrint(Context context)
+    {
+        return RxFingerprint.authenticate(context);
+    }
+
+
+    public static class SensorNotReadyException extends Exception
+    {
+        public SensorNotReadyException(String message) {
+            super(message);
+        }
+    }
+
+    public static class FailedFingerPrintException extends Exception
+    {
+
+        public FailedFingerPrintException(String message) {
+            super(message);
+        }
+    }
+
 }

app/src/main/res/layout/activity_settings.xml

@@ -135,6 +135,12 @@
                 android:textColor="@color/darkgray"
                 android:textSize="14sp" />
 
+            <View
+                android:id="@+id/view_fingerprint_divider"
+                android:layout_width="match_parent"
+                android:layout_height="1dp"
+                android:background="@color/divider_dark" />
+
         </LinearLayout>
     </ScrollView>