/// <summary>
/// Saves the config file encrypted using the passed key
/// </summary>
/// <param name="filePath">The path to the file where to save the configuration</param>
/// <param name="key">The key for encrypting the file</param>
/// <exception cref="ConfigException">Something went wrong while encryption (Unknown)</exception>
/// <exception cref="Exception">All exception that can be passed on by File.WriteAllBytes called with the filePath</exception>
public void SaveConfig(string filePath, string key)
{
// Generates the object that will be saved as the config file
JObject json = new JObject()
{
["port"] = this.Port,
["host"] = this.Host,
["rsa"] = SimpleSecurityUtils.SaveRSAToJson(this.PrivateKey)
};
// Generates the actual key and iv from the previous plain text key
byte[] aesKey = SimpleSecurityUtils.HashSHA256(Encoding.UTF8.GetBytes(key));
byte[] aesIv = SimpleSecurityUtils.HashMD5(Encoding.UTF8.GetBytes(key));
// Encryptes the config-json object
byte[] encData = SimpleSecurityUtils.EncryptAES(Encoding.UTF8.GetBytes(json.ToString()), aesKey, aesIv);
// Checks if the encryption failed
if (encData == null)
{
// Unknown exception
throw new ConfigException();
}
// Writes all data to the file
File.WriteAllBytes(filePath, encData);
}
public ConfigWindow(Config cfg, string password)
{
InitializeComponent();
this.cfg = cfg;
this.password = password;
// Sets the values
this.FieldPort.Text = cfg.Port.ToString();
this.FieldHost.Text = cfg.Host;
this.FieldRSA.Text = SimpleSecurityUtils.SaveRSAToJson(cfg.PrivateKey).ToString(Formatting.None);
// Disables the save button
this.buttonSave.IsEnabled = false;
}