1 files changed, 9 insertions, 0 deletions
diff --git a/src/org/traccar/helper/Checksum.java b/src/org/traccar/helper/Checksum.java
index 2a4b1191d..dde174545 100644
--- a/src/org/traccar/helper/Checksum.java
+++ b/src/org/traccar/helper/Checksum.java
@@ -194,6 +194,15 @@ public final class Checksum {
         return checksum;
     }
 
+    public static int xor(String string) {
+        byte[] bytes = string.getBytes(StandardCharsets.US_ASCII);
+        byte sum = 0;
+        for (byte b : bytes) {
+            sum ^= b;
+        }
+        return sum;
+    }
+
     public static String nmea(String msg) {
         int checksum = 0;
         for (byte b : msg.getBytes(StandardCharsets.US_ASCII)) {