cleaning structure

old code/tray/assets/signing/sign-message.core.cs

@@ -0,0 +1,53 @@
+// #########################################################
+// #             WARNING   WARNING   WARNING               #
+// #########################################################
+// #                                                       #
+// # This file is intended for demonstration purposes      #
+// # only.                                                 #
+// #                                                       #
+// # It is the SOLE responsibility of YOU, the programmer  #
+// # to prevent against unauthorized access to any signing #
+// # functions.                                            #
+// #                                                       #
+// # Organizations that do not protect against un-         #
+// # authorized signing will be black-listed to prevent    #
+// # software piracy.                                      #
+// #                                                       #
+// # -QZ Industries, LLC                                   #
+// #                                                       #
+// #########################################################
+	
+using System.Security.Cryptography;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using System.Web.Services;
+
+// To convert a .PEM PrivateKey:
+// openssl pkcs12 -export -inkey private-key.pem -in digital-certificate.txt -out private-key.pfx
+private static X509KeyStorageFlags STORAGE_FLAGS = X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable;
+
+public IActionResult Index(string request)
+{
+    var KEY = "/path/to/private-key.pfx";
+    var PASS = "";
+
+    try
+    {   
+        byte[] data = new ASCIIEncoding().GetBytes(request);
+        var cert = new X509Certificate2(KEY, PASS, STORAGE_FLAGS);
+        RSA rsa = (RSA)cert.GetRSAPrivateKey();
+        var signed = rsa.SignData(data, HashAlgorithmName.SHA512, RSASignaturePadding.Pkcs1);
+        string base64 = Convert.ToBase64String(signed);
+        return Content(base64);
+    }
+    catch(Exception ex)
+    {
+        if((STORAGE_FLAGS & X509KeyStorageFlags.MachineKeySet) == X509KeyStorageFlags.MachineKeySet)
+        {
+            // IISExpress may fail with "Invalid provider type specified"; remove MachineKeySet flag, try again
+            STORAGE_FLAGS = STORAGE_FLAGS & ~X509KeyStorageFlags.MachineKeySet;
+            return Index(request);
+        }
+        throw ex;
+    }
+}