From 5a9a0260912df7f5b3708cd90b7273a7ca1ef632 Mon Sep 17 00:00:00 2001
From: Christopher Beckmann <chris.beckm@gmail.com>
Date: Thu, 14 May 2020 12:09:46 +0200
Subject: [PATCH] Small fix to generatePassphrase to avoid overwriting the key.

---
 .../privacyfriendlyfoodtracker/helpers/KeyGenHelper.java       | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/app/src/main/java/org/secuso/privacyfriendlyfoodtracker/helpers/KeyGenHelper.java b/app/src/main/java/org/secuso/privacyfriendlyfoodtracker/helpers/KeyGenHelper.java
index 884ae33..cff27d9 100644
--- a/app/src/main/java/org/secuso/privacyfriendlyfoodtracker/helpers/KeyGenHelper.java
+++ b/app/src/main/java/org/secuso/privacyfriendlyfoodtracker/helpers/KeyGenHelper.java
@@ -112,7 +112,10 @@ public static void generateKey(Context context) throws Exception {
      */
     public static void generatePassphrase(Context context) throws Exception {
         SharedPreferences pref = context.getSharedPreferences(SHARED_PREFERENCE_NAME, Context.MODE_PRIVATE);
+
         String enryptedKeyB64 = pref.getString(ENCRYPTED_KEY, null);
+        if(enryptedKeyB64 != null) return;
+
         byte[] encryptedKey = rsaEncrypt(generateKeyPassphrase());
         enryptedKeyB64 = Base64.encodeToString(encryptedKey, Base64.DEFAULT);
         SharedPreferences.Editor edit = pref.edit();