From b168e14985556ca0e3e6cd4e25c148e5c44c2fee Mon Sep 17 00:00:00 2001
From: Moxie Marlinspike <moxie@thoughtcrime.org>
Date: Thu, 15 Mar 2018 10:18:14 -0700
Subject: [PATCH] Move salt outside the loop

---
 src/org/thoughtcrime/securesms/backup/FullBackupBase.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/org/thoughtcrime/securesms/backup/FullBackupBase.java b/src/org/thoughtcrime/securesms/backup/FullBackupBase.java
index c6d881fdf2..431f60bd9b 100644
--- a/src/org/thoughtcrime/securesms/backup/FullBackupBase.java
+++ b/src/org/thoughtcrime/securesms/backup/FullBackupBase.java
@@ -24,10 +24,11 @@ public abstract class FullBackupBase {
         byte[]        input  = passphrase.replace(" ", "").getBytes();
         byte[]        hash   = input;
 
+        if (salt != null) digest.update(salt);
+
         for (int i=0;i<250000;i++) {
           if (i % 1000 == 0) EventBus.getDefault().post(new BackupEvent(BackupEvent.Type.PROGRESS, 0));
           digest.update(hash);
-          if (salt != null) digest.update(salt);
           hash = digest.digest(input);
         }