/// <summary>
/// This follows the same initialization that is provided when <see cref="IDataProtectionProvider"/>
/// is initialized within ASP.NET 5.0 Dependency Injection.
/// </summary>
/// <returns>A fully initialized <see cref="IDataProtectionProvider"/>.</returns>
internal static IDataProtectionProvider GetDataProtectionProvider()
{
ServiceCollection serviceCollection = new ServiceCollection();
serviceCollection.AddDataProtection();
IServiceProvider services = serviceCollection.BuildServiceProvider();
return services.GetDataProtectionProvider();
}
/// <summary>
/// Creates an <see cref="DataProtectionProvider"/> given a location at which to store keys and an
/// optional configuration callback.
/// </summary>
/// <param name="keyDirectory">The <see cref="DirectoryInfo"/> in which keys should be stored. This may
/// represent a directory on a local disk or a UNC share.</param>
/// <param name="configure">An optional callback which provides further configuration of the data protection
/// system. See <see cref="DataProtectionConfiguration"/> for more information.</param>
public DataProtectionProvider([NotNull] DirectoryInfo keyDirectory, Action<DataProtectionConfiguration> configure)
{
// build the service collection
ServiceCollection serviceCollection = new ServiceCollection();
serviceCollection.AddDataProtection();
serviceCollection.ConfigureDataProtection(configurationObject =>
{
configurationObject.PersistKeysToFileSystem(keyDirectory);
configure?.Invoke(configurationObject);
});
// extract the provider instance from the service collection
_innerProvider = serviceCollection.BuildServiceProvider().GetRequiredService<IDataProtectionProvider>();
}
static void Main(string[] args)
{
var serviceCollection = new ServiceCollection();
serviceCollection.AddDataProtection();
serviceCollection.ConfigureDataProtection(options =>
{
options.SetApplicationName(appName);
});
var services = serviceCollection.BuildServiceProvider();
var demoInstance = ActivatorUtilities.CreateInstance<ProtectUnprotectDemo>(services);
demoInstance.Demonstrate();
}
/// <summary>
/// Provides a default implementation of required services, calls the developer's
/// configuration overrides, then creates an <see cref="IDataProtectionProvider"/>.
/// </summary>
internal IDataProtectionProvider InternalConfigureServicesAndCreateProtectionProvider()
{
// Configure the default implementation, passing in our custom discriminator
var services = new ServiceCollection();
services.AddDataProtection();
services.AddInstance<IApplicationDiscriminator>(new SystemWebApplicationDiscriminator());
// Run user-specified configuration and get an instance of the provider
ConfigureServices(services);
var provider = CreateDataProtectionProvider(services.BuildServiceProvider());
if (provider == null)
{
throw new InvalidOperationException(Resources.Startup_CreateProviderReturnedNull);
}
// And we're done!
return provider;
}