Corrected c# example to show that you need to skip the hash key

paynow · Feb 14, 2025 · dce9d61 · dce9d61
1 parent 12c5f21
commit dce9d61
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/docs/generating_hash.md b/docs/generating_hash.md
@@ -81,13 +81,14 @@ private function CreateHash($values, $IntegrationKey) {
 private static string GenerateTwoWayHash(Dictionary<string, string> items, Guid guid)
 {
     string concat = string.Join("", 
-         items.Select(c => (c.Value != null ? c.Value.Trim() : "")).ToArray()
+        items
+             .Where(c => !string.Equals(c.Key, "HASH", StringComparison.OrdinalIgnoreCase)) 
+             .Select(c => c.Value?.Trim() ?? "")
     );
 
     SHA512 check = SHA512.Create();
-
     byte[] resultArr = check.ComputeHash(Encoding.UTF8.GetBytes(concat + guid));
-    return ByteArrayToString (resultArr);
+    return ByteArrayToString(resultArr);
 }
 
 public static string ByteArrayToString(byte[] ba)