/// <summary>
/// Deserialize a SettingsStruct>
/// </summary>
///
/// <param name="SettingsStream">Stream containing a serialized SettingsStruct</param>
///
/// <returns>A populated SettingsStruct</returns>
internal static SettingsContainer DeSerialize(MemoryStream SettingsStream)
{
BinaryReader reader = new BinaryReader(SettingsStream);
SettingsContainer settings = new SettingsContainer();
settings.Authority = new KeyAuthority(SettingsStream);
settings.Description = new CipherDescription(SettingsStream);
settings.SignChecked = reader.ReadBoolean();
settings.DomainRestrictChecked = reader.ReadBoolean();
settings.VolatileChecked = reader.ReadBoolean();
settings.SingleUseChecked = reader.ReadBoolean();
settings.PostOverwriteChecked = reader.ReadBoolean();
settings.PackageAuthChecked = reader.ReadBoolean();
settings.NoNarrativeChecked = reader.ReadBoolean();
settings.NoExportChecked = reader.ReadBoolean();
return settings;
}
/// <summary>
/// Convert a SettingsStruct to a string representation
/// </summary>
///
/// <param name="Package">The SettingsStruct</param>
///
/// <returns>A base 64 string representation of the structure</returns>
internal static string ToString(SettingsContainer Settings)
{
return Encoding.ASCII.GetString(Serialize(Settings).ToArray());
}
/// <summary>
/// Serialize a SettingsStruct structure
/// </summary>
///
/// <param name="Settings">A SettingsStruct structure</param>
///
/// <returns>A stream containing the SettingsStruct data</returns>
internal static MemoryStream Serialize(SettingsContainer Settings)
{
MemoryStream stream = new MemoryStream();
BinaryWriter writer = new BinaryWriter(stream);
writer.Write(Settings.Authority.ToBytes());
writer.Write(Settings.Description.ToBytes());
writer.Write(Settings.SignChecked);
writer.Write(Settings.DomainRestrictChecked);
writer.Write(Settings.VolatileChecked);
writer.Write(Settings.SingleUseChecked);
writer.Write(Settings.PostOverwriteChecked);
writer.Write(Settings.PackageAuthChecked);
writer.Write(Settings.NoNarrativeChecked);
writer.Write(Settings.NoExportChecked);
return stream;
}
private void LoadSettings()
{
if (string.IsNullOrEmpty(Properties.Settings.Default.AppSettings))
{
// first run
LoadDefaults();
return;
}
else
{
try
{
// get the encrypted _container string and convert to byte array
byte[] appData = Convert.FromBase64String(Properties.Settings.Default.AppSettings);
// decrypt the array with DAPI, requires same user context
appData = DataProtect.DecryptProtectedData(appData, Utilities.GetCredentials());
// deserialize the settings container
_container = SettingsContainer.DeSerialize(new MemoryStream(appData));
_container.Authority.OptionFlag = 0;
_container.Authority.KeyPolicy = 0;
// apply the container values to controls
cbEngines.SelectedIndex = _container.Description.EngineType;
SetComboParams((SymmetricEngines)_container.Description.EngineType);
SetKeySizes((SymmetricEngines)_container.Description.EngineType, (Digests)_container.Description.KdfEngine);
cbCipherMode.SelectedIndex = _container.Description.CipherType;
cbHkdf.SelectedIndex = _container.Description.KdfEngine;
cbHmac.SelectedIndex = _container.Description.MacEngine;
cbKeySize.SelectedIndex = ComboHelper.IndexFromValue(_container.Description.KeySize, typeof(KeySizes), cbKeySize);
cbPaddingMode.SelectedIndex = _container.Description.PaddingType;
cbRounds.SelectedIndex = ComboHelper.IndexFromValue(_container.Description.RoundCount, typeof(RoundCounts), cbRounds);
cbVectorSize.SelectedIndex = ComboHelper.IndexFromValue(_container.Description.IvSize, typeof(IVSizes), cbVectorSize);
chkDomainRestrict.Checked = _container.DomainRestrictChecked;
chkNoExport.Checked = _container.NoExportChecked;
chkNoNarrative.Checked = _container.NoNarrativeChecked;
chkPackageAuth.Checked = _container.PackageAuthChecked;
chkPostOverwrite.Checked = _container.PostOverwriteChecked;
chkSign.Checked = _container.SignChecked;
chkSingleUse.Checked = _container.SingleUseChecked;
chkVolatile.Checked = _container.VolatileChecked;
_container.Authority.DomainId = Utilities.GetDomainId();
}
catch
{
LoadDefaults();
}
}
}
private void LoadDefaults()
{
byte[] origin = _container.Authority.OriginId;
if (!IdValid(origin))
origin = Utilities.GetOriginId();
_container = new SettingsContainer()
{
Authority = new KeyAuthority(Utilities.GetDomainId(), origin, new byte[0], new byte[0], KeyPolicies.None),
Description = new CipherDescription(SymmetricEngines.RHX, (int)KeySizes.K2560, IVSizes.V128, CipherModes.CTR, PaddingModes.X923, BlockSizes.B128, RoundCounts.R22),
DomainRestrictChecked = false,
NoNarrativeChecked = false,
PackageAuthChecked = false,
PostOverwriteChecked = false,
SignChecked = false,
SingleUseChecked = false,
VolatileChecked = false
};
}
/// <summary>
/// Convert a SettingsStruct to a string representation
/// </summary>
///
/// <param name="Package">The SettingsStruct</param>
///
/// <returns>A base 64 string representation of the structure</returns>
internal static string ToString(SettingsContainer Settings)
{
return(Encoding.ASCII.GetString(Serialize(Settings).ToArray()));
}
