Converting Registry data to usable String in C#-CodePudding

So I'm currently creating a CLI program for my encryption library. This is just a test program, as I will later build a GUI-based program for it. I am storing the encryption key in the registry, for now, might change this later. So far, I can write the key to the registry, but I can't convert the data from the registry back to a string to use as the actual key in the encryption.

Here's my current code:

internal String Encrypt()
        {
            Console.Clear();
            Console.Write("Encryption\nPlease enter the path to the file you want to encrypt: ");

            String FileInPath = Console.ReadLine();
            String FileOutPath = "";
            String FileData = "";

            while (FileInPath == "")
            {
                FileInPath = RetryPathIn();
            }

            String RetryPathIn()
            {
                Console.WriteLine(".>>");
                String PathInStr = Console.ReadLine();
                return PathInStr;
            }
            
            Console.Write("\nPlease enter the path of the file you want to decrypt: ");
            FileOutPath = Console.ReadLine();

            while (FileOutPath == "")
            {
                FileOutPath = RetryEncrypt();
            }

            String RetryEncrypt()
            {
                Console.WriteLine(".>>");
                String FileOutPathStr = Console.ReadLine();
                return FileOutPathStr;
            }
            object Key = Registry.CurrentUser.OpenSubKey(@"Software\NikkieDev Software").GetValue("Key");
            String KeyStr = Key.ToString();
            String FileOutData = "";

            if (Key!=null)
            {
               FileOutData = Crypt.Encrypt(FileData, KeyStr);
            }

            var file = File.Create(FileOutPath);
            file.Close();
            File.WriteAllText(FileOutPath, FileOutData);

            return $"Data has been encrypted and saved in {FileOutPath}";
        }

I am fairly new to the registry, and I've only recently found out how to use it as data storage in programming. I am using .NET 6 for this, and I hope that someone can help me.

[EDIT] I've shown below how I've created the register data. Due to people asking about it

internal void Initialize()
        {
            String SettingsFile = File.ReadAllText(CoreObject.DataFile);
            dynamic _JsonObj = JsonConvert.DeserializeObject(SettingsFile);

            if (_JsonObj["KeyGenerated"] == 0)
            {
                RegistryKey RegData = Registry.CurrentUser.CreateSubKey(@"Software\NikkieDev Software");
                String NewKey = Key.CreateKey();
                RegData.SetValue("Key", NewKey);
                
                _JsonObj["KeyGenerated"] = 1;

                dynamic NewData = JsonConvert.SerializeObject(_JsonObj, Formatting.Indented);
                File.WriteAllText(CoreObject.DataFile, NewData);
                RegData.Close();
            }
        }

Due to recent questions about missing code, I here provide my encryption library that I'm building this program around: https://github.com/NikkieDev/bungocrypt_cs

The CreateKey() returns a string (the key). Furthermore Crypt.Encrypt() takes the key and the data and scrambles them together and exchanges all the characters with one another.

CodePudding user response：

The answers have been provided by the community in the comments. Thanks to the people listed below

Topaco Raymond Chen