Remove legacy AttackTracer repo content

src/OCSentinelCli/Security/ProtectedSecretStore.cs

@@ -0,0 +1,28 @@
+using System.Security.Cryptography;
+using System.Text;
+
+namespace OCSentinelCli.Security;
+
+internal static class ProtectedSecretStore
+{
+    public static string LoadSecret(string path)
+    {
+        byte[] protectedBytes = File.ReadAllBytes(path);
+        byte[] plainBytes = ProtectedData.Unprotect(protectedBytes, null, DataProtectionScope.LocalMachine);
+        return Encoding.UTF8.GetString(plainBytes);
+    }
+
+    public static void SaveSecret(string path, string secret)
+    {
+        string fullPath = Path.GetFullPath(path);
+        string? directory = Path.GetDirectoryName(fullPath);
+        if (!string.IsNullOrWhiteSpace(directory))
+        {
+            Directory.CreateDirectory(directory);
+        }
+
+        byte[] plainBytes = Encoding.UTF8.GetBytes(secret);
+        byte[] protectedBytes = ProtectedData.Protect(plainBytes, null, DataProtectionScope.LocalMachine);
+        File.WriteAllBytes(fullPath, protectedBytes);
+    }
+}