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MarketDataLib/Service/Authorization.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MarketData.Service
+{
+  public class Authorizations
+  {
+    public static String Xor(String input, int magic=5)
+    {
+      StringBuilder sb = new StringBuilder();
+      foreach (char ch in input) sb.Append((char)(ch ^ (char)magic));
+      return sb.ToString();
+    }
+  }
+}