From 2c0e6335f49b485976de17572d0edd3cee525d90 Mon Sep 17 00:00:00 2001
From: Galeen <2math@mail.bg>
Date: Fri, 7 Jun 2019 17:47:51 +0300
Subject: [PATCH] print key hash in system utils

---
 .../base_library/utils/SystemUtils.java       | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/core_library/src/main/java/com/futurist_labs/android/base_library/utils/SystemUtils.java b/core_library/src/main/java/com/futurist_labs/android/base_library/utils/SystemUtils.java
index 4efaa9e..3feaa80 100644
--- a/core_library/src/main/java/com/futurist_labs/android/base_library/utils/SystemUtils.java
+++ b/core_library/src/main/java/com/futurist_labs/android/base_library/utils/SystemUtils.java
@@ -1,11 +1,14 @@
 package com.futurist_labs.android.base_library.utils;
 
+import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.app.NotificationManager;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
+import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
+import android.content.pm.Signature;
 import android.graphics.Point;
 import android.graphics.Rect;
 import android.os.Build;
@@ -20,7 +23,9 @@
 import android.text.Spanned;
 import android.text.style.StrikethroughSpan;
 import android.text.style.UnderlineSpan;
+import android.util.Base64;
 import android.util.DisplayMetrics;
+import android.util.Log;
 import android.view.Display;
 import android.view.View;
 import android.view.Window;
@@ -36,6 +41,8 @@
 import com.futurist_labs.android.base_library.utils.photo.HttpImageGetter;
 import com.futurist_labs.android.base_library.views.font_views.FontHelper;
 
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
 import java.util.UUID;
 
 //import com.google.android.gms.maps.model.BitmapDescriptor;
@@ -381,4 +388,26 @@ public static void pasteInClipboard(Context context, String text, String label)
         ClipData clip = ClipData.newPlainText(label, text);
         clipboard.setPrimaryClip(clip);
     }
+
+    /**
+     * Use this helper method to print your keyHash in logs, don't use it in production
+     *
+     * @param activity context
+     */
+    public static void printKeyHash(Activity activity) {
+        try {
+            @SuppressLint("PackageManagerGetSignatures")
+            PackageInfo info = activity.getPackageManager().getPackageInfo(
+                    activity.getPackageName(), PackageManager.GET_SIGNATURES);
+            for (Signature signature : info.signatures) {
+                MessageDigest md = MessageDigest.getInstance("SHA");
+                md.update(signature.toByteArray());
+                Log.e("MY KEY HASH:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
+            }
+        } catch (PackageManager.NameNotFoundException e) {
+            LogUtils.d(e.getMessage());
+        } catch (NoSuchAlgorithmException e) {
+            LogUtils.d(e.getMessage());
+        }
+    }
 }