initial commit

SEGATools/Security/InitialProgramUtils.cs

@@ -0,0 +1,52 @@
+// Decompiled with JetBrains decompiler
+// Type: SEGATools.Security.InitialProgramUtils
+// Assembly: SEGATools, Version=1.0.3.0, Culture=neutral, PublicKeyToken=611be24fdeb07e08
+// MVID: D631183F-57B1-40A1-B502-5364D288307A
+// Assembly location: SEGATools.dll
+
+using System;
+
+namespace SEGATools.Security
+{
+  public class InitialProgramUtils
+  {
+    private static readonly Logger.ILog logger = Logger.CreateLog();
+
+    public static int ComputeCRC(string productId, string productVersion)
+    {
+      int num = (int) ushort.MaxValue;
+      foreach (char ch in productId + productVersion)
+      {
+        num ^= (int) ch << 8;
+        for (int index = 0; index < 8; ++index)
+        {
+          if ((num & 32768) > 1)
+            num = num << 1 ^ 4129;
+          else
+            num <<= 1;
+        }
+      }
+      return num & (int) ushort.MaxValue;
+    }
+
+    public static byte[] ConvertHexStringToBytes(string hexString)
+    {
+      byte[] numArray = new byte[hexString.Length];
+      for (int index = 0; index < numArray.Length; ++index)
+      {
+        try
+        {
+          numArray[index] = Convert.ToByte(hexString[index].ToString(), 16);
+        }
+        catch (Exception ex)
+        {
+          logger.Error(ex);
+          numArray[index] = (byte) 0;
+        }
+      }
+      if (BitConverter.IsLittleEndian)
+        Array.Reverse((Array) numArray);
+      return numArray;
+    }
+  }
+}