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authorPhilipp Prangenberg <philipp.prangenberg@derkurier.de>2016-12-05 12:03:08 +0100
committerPhilipp Prangenberg <philipp.prangenberg@derkurier.de>2016-12-05 12:03:08 +0100
commita21f436a58133f7da0cae06366d729665f3b8f9c (patch)
tree72ff1743d96f79e4a9d85b0d48715e5f9aa67cf9 /src/org/traccar/helper/Checksum.java
parent960bf899414d89221e92138fdb98777c3f4f73ec (diff)
parent40607036c5aa6385a7ae3f3a283bf107238a5944 (diff)
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Merge remote-tracking branch 'upstream/master'
Diffstat (limited to 'src/org/traccar/helper/Checksum.java')
-rw-r--r--src/org/traccar/helper/Checksum.java15
1 files changed, 12 insertions, 3 deletions
diff --git a/src/org/traccar/helper/Checksum.java b/src/org/traccar/helper/Checksum.java
index 2a4b1191d..f08292392 100644
--- a/src/org/traccar/helper/Checksum.java
+++ b/src/org/traccar/helper/Checksum.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2012 - 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2012 - 2015 Anton Tananaev (anton@traccar.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -194,10 +194,19 @@ public final class Checksum {
return checksum;
}
+ public static int xor(String string) {
+ byte checksum = 0;
+ for (byte b : string.getBytes(StandardCharsets.US_ASCII)) {
+ checksum ^= b;
+ }
+ return checksum;
+ }
+
public static String nmea(String msg) {
int checksum = 0;
- for (byte b : msg.getBytes(StandardCharsets.US_ASCII)) {
- checksum ^= b;
+ byte[] bytes = msg.getBytes(StandardCharsets.US_ASCII);
+ for (int i = 1; i < bytes.length; i++) {
+ checksum ^= bytes[i];
}
return String.format("*%02x", checksum).toUpperCase();
}