diff --git a/core/src/main/java/de/fitko/fitconnect/core/crypto/HashUtil.java b/core/src/main/java/de/fitko/fitconnect/core/crypto/HashUtil.java
index 5365c28200544e9c45b0e8351475a26096d15fc3..749f043afa960244fef6480d6eaa448516e61967 100644
--- a/core/src/main/java/de/fitko/fitconnect/core/crypto/HashUtil.java
+++ b/core/src/main/java/de/fitko/fitconnect/core/crypto/HashUtil.java
@@ -1,6 +1,6 @@
 package de.fitko.fitconnect.core.crypto;
 
-import de.fitko.fitconnect.api.exceptions.internal.InitializationException;
+import de.fitko.fitconnect.api.exceptions.InitializationException;
 
 import java.io.File;
 import java.io.IOException;
@@ -18,8 +18,8 @@ public class HashUtil {
     public HashUtil() {
         try {
             this.messageDigest = MessageDigest.getInstance(DEFAULT_ALGORITHM);
-        } catch (NoSuchAlgorithmException e) {
-            throw new InitializationException(e.getMessage(),e);
+        } catch (final NoSuchAlgorithmException e) {
+            throw new InitializationException(e.getMessage(), e);
         }
     }
 
@@ -27,26 +27,26 @@ public class HashUtil {
         this.messageDigest = messageDigest;
     }
 
-    public byte[] createHash(byte[] data) {
+    public byte[] createHash(final byte[] data) {
         this.messageDigest.reset();
         return this.messageDigest.digest(data);
     }
 
-    public boolean verify(byte[] originalHash, byte[] data) {
-        byte[] newHash = createHash(data);
+    public boolean verify(final byte[] originalHash, final byte[] data) {
+        final byte[] newHash = createHash(data);
         return compareHashes(originalHash, newHash);
     }
 
-    public String createHashFromFile(File file) throws IOException {
+    public String createHashFromFile(final File file) throws IOException {
         try {
-            byte[] rawData = Files.readAllBytes(Paths.get(file.getPath()));
+            final byte[] rawData = Files.readAllBytes(Paths.get(file.getPath()));
             return new String(rawData);
-        } catch (IOException e) {
+        } catch (final IOException e) {
             throw e;
         }
     }
 
-    private boolean compareHashes(byte[] originalHash, byte[] comparisonHash) {
+    private boolean compareHashes(final byte[] originalHash, final byte[] comparisonHash) {
         int diff = originalHash.length ^ comparisonHash.length;
         for (int i = 0; i < originalHash.length && i < comparisonHash.length; i++) {
             diff |= originalHash[i] ^ comparisonHash[i];