Fixed threading bug

DHuckaby · Dec 10, 2012 · e737f91 · e737f91
1 parent 7cae192
commit e737f91
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/library/src/com/handlerexploit/common/utils/Hashing.java b/library/src/com/handlerexploit/common/utils/Hashing.java
@@ -14,7 +14,11 @@ public class Hashing {
     private static final char[] DIGITS = "0123456789abcdef".toCharArray();
     private static final MessageDigest DIGEST = getMessageDigest("SHA-1");
 
-    public static String hashString(CharSequence input) {
+    public static synchronized String hashString(CharSequence input) {
+        if (input == null) {
+            return null;
+        }
+
         String hash = CACHE.get(input);
         if (hash != null) {
             return hash;