private static void SetKeyProperties(SafeNCryptKeyHandle keyHandle,
CngKeyCreationParameters creationParameters) {
Contract.Requires(keyHandle != null && !keyHandle.IsInvalid && !keyHandle.IsClosed);
Contract.Requires(creationParameters != null);
//
// Setup the well-known properties.
//
if (creationParameters.ExportPolicy.HasValue) {
NCryptNative.SetProperty(keyHandle,
NCryptNative.KeyPropertyName.ExportPolicy,
(int)creationParameters.ExportPolicy.Value,
CngPropertyOptions.Persist);
}
if (creationParameters.KeyUsage.HasValue) {
NCryptNative.SetProperty(keyHandle,
NCryptNative.KeyPropertyName.KeyUsage,
(int)creationParameters.KeyUsage.Value,
CngPropertyOptions.Persist);
}
if (creationParameters.ParentWindowHandle != IntPtr.Zero) {
NCryptNative.SetProperty(keyHandle,
NCryptNative.KeyPropertyName.ParentWindowHandle,
creationParameters.ParentWindowHandle,
CngPropertyOptions.None);
}
if (creationParameters.UIPolicy != null) {
NCryptNative.NCRYPT_UI_POLICY uiPolicy = new NCryptNative.NCRYPT_UI_POLICY();
uiPolicy.dwVersion = 1;
uiPolicy.dwFlags = creationParameters.UIPolicy.ProtectionLevel;
uiPolicy.pszCreationTitle = creationParameters.UIPolicy.CreationTitle;
uiPolicy.pszFriendlyName = creationParameters.UIPolicy.FriendlyName;
uiPolicy.pszDescription = creationParameters.UIPolicy.Description;
NCryptNative.SetProperty(keyHandle,
NCryptNative.KeyPropertyName.UIPolicy,
uiPolicy,
CngPropertyOptions.Persist);
// The use context is a seperate property from the standard UI context
if (creationParameters.UIPolicy.UseContext != null) {
NCryptNative.SetProperty(keyHandle,
NCryptNative.KeyPropertyName.UseContext,
creationParameters.UIPolicy.UseContext,
CngPropertyOptions.Persist);
}
}
// Iterate over the custom properties, setting those as well.
foreach (CngProperty property in creationParameters.ParametersNoDemand) {
NCryptNative.SetProperty(keyHandle, property.Name, property.Value, property.Options);
}
}
private static void SetKeyProperties(SafeNCryptKeyHandle keyHandle, CngKeyCreationParameters creationParameters)
{
if (creationParameters.ExportPolicy.HasValue)
{
NCryptNative.SetProperty(keyHandle, "Export Policy", creationParameters.ExportPolicy.Value, CngPropertyOptions.None | CngPropertyOptions.Persist);
}
if (creationParameters.KeyUsage.HasValue)
{
NCryptNative.SetProperty(keyHandle, "Key Usage", creationParameters.KeyUsage.Value, CngPropertyOptions.None | CngPropertyOptions.Persist);
}
if (creationParameters.ParentWindowHandle != IntPtr.Zero)
{
NCryptNative.SetProperty<IntPtr>(keyHandle, "HWND Handle", creationParameters.ParentWindowHandle, CngPropertyOptions.None);
}
if (creationParameters.UIPolicy != null)
{
NCryptNative.NCRYPT_UI_POLICY ncrypt_ui_policy = new NCryptNative.NCRYPT_UI_POLICY {
dwVersion = 1,
dwFlags = creationParameters.UIPolicy.ProtectionLevel,
pszCreationTitle = creationParameters.UIPolicy.CreationTitle,
pszFriendlyName = creationParameters.UIPolicy.FriendlyName,
pszDescription = creationParameters.UIPolicy.Description
};
NCryptNative.SetProperty<NCryptNative.NCRYPT_UI_POLICY>(keyHandle, "UI Policy", ncrypt_ui_policy, CngPropertyOptions.None | CngPropertyOptions.Persist);
if (creationParameters.UIPolicy.UseContext != null)
{
NCryptNative.SetProperty(keyHandle, "Use Context", creationParameters.UIPolicy.UseContext, CngPropertyOptions.None | CngPropertyOptions.Persist);
}
}
foreach (CngProperty property in creationParameters.ParametersNoDemand)
{
NCryptNative.SetProperty(keyHandle, property.Name, property.Value, property.Options);
}
}
