C#中将注册表存储的加密密钥转换为可用字符串求助

问题描述 #

我正在为自己的加密库开发一款CLI测试程序，后续会推出GUI版本。目前我将加密密钥存储在注册表中，已实现密钥写入功能，但无法将注册表中的密钥数据转换为可用字符串用于加密操作。我对注册表操作较为陌生，近期才开始将其用作程序数据存储，当前使用.NET 6开发。

相关代码 #

加密方法代码 #

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}";
}

注册表写入密钥代码 #

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();
    }
}

补充说明 #

我使用的加密库为bungocrypt_cs，其中CreateKey()返回字符串类型的密钥，Crypt.Encrypt()接收密钥和数据并进行字符置换加密。

内容的提问来源于stack exchange，提问作者NikkieDev