ProtectedConfigurationSection
Provides programmatic access to the configProtectedData configuration section. This class cannot be inherited.
using System.Collections.Specialized;
using System.Globalization;
using System.Xml;
namespace System.Configuration
{
public sealed class ProtectedConfigurationSection : ConfigurationSection
{
private const string EncryptedSectionTemplate = "<{0} {1}=\"{2}\"> {3} </{0}>";
private static readonly ConfigurationProperty s_propProviders = new ConfigurationProperty("providers", typeof(ProtectedProviderSettings), new ProtectedProviderSettings(), ConfigurationPropertyOptions.None);
private static readonly ConfigurationProperty s_propDefaultProvider = new ConfigurationProperty("defaultProvider", typeof(string), "RsaProtectedConfigurationProvider", null, ConfigurationProperty.s_nonEmptyStringValidator, ConfigurationPropertyOptions.None);
private static readonly ConfigurationPropertyCollection s_properties = new ConfigurationPropertyCollection {
s_propProviders,
s_propDefaultProvider
};
protected internal override ConfigurationPropertyCollection Properties => s_properties;
private ProtectedProviderSettings ProtectedProviders => (ProtectedProviderSettings)base[s_propProviders];
[ConfigurationProperty("providers")]
public ProviderSettingsCollection Providers {
get {
return ProtectedProviders.Providers;
}
}
[ConfigurationProperty("defaultProvider", DefaultValue = "RsaProtectedConfigurationProvider")]
public string DefaultProvider {
get {
return (string)base[s_propDefaultProvider];
}
set {
base[s_propDefaultProvider] = value;
}
}
internal ProtectedConfigurationProvider GetProviderFromName(string providerName)
{
ProviderSettings providerSettings = Providers[providerName];
if (providerSettings == null)
throw new ArgumentException(System.SR.Format(System.SR.ProtectedConfigurationProvider_not_found, providerName), "providerName");
return InstantiateProvider(providerSettings);
}
internal ProtectedConfigurationProviderCollection GetAllProviders()
{
ProtectedConfigurationProviderCollection protectedConfigurationProviderCollection = new ProtectedConfigurationProviderCollection();
foreach (ProviderSettings provider in Providers) {
protectedConfigurationProviderCollection.Add(InstantiateProvider(provider));
}
return protectedConfigurationProviderCollection;
}
private static ProtectedConfigurationProvider CreateAndInitializeProviderWithAssert(Type t, ProviderSettings pn)
{
ProtectedConfigurationProvider protectedConfigurationProvider = (ProtectedConfigurationProvider)TypeUtil.CreateInstance(t);
NameValueCollection parameters = pn.Parameters;
NameValueCollection nameValueCollection = new NameValueCollection(parameters.Count);
foreach (string item in parameters) {
nameValueCollection[item] = parameters[item];
}
protectedConfigurationProvider.Initialize(pn.Name, nameValueCollection);
return protectedConfigurationProvider;
}
private static ProtectedConfigurationProvider InstantiateProvider(ProviderSettings pn)
{
Type type = TypeUtil.GetType(pn.Type, true);
if (!typeof(ProtectedConfigurationProvider).IsAssignableFrom(type))
throw new ArgumentException(System.SR.WrongType_of_Protected_provider, "pn");
return CreateAndInitializeProviderWithAssert(type, pn);
}
internal static string DecryptSection(string encryptedXml, ProtectedConfigurationProvider provider)
{
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.LoadXml(encryptedXml);
XmlNode xmlNode = provider.Decrypt(xmlDocument.DocumentElement);
return xmlNode.OuterXml;
}
internal static string FormatEncryptedSection(string encryptedXml, string sectionName, string providerName)
{
return string.Format(CultureInfo.InvariantCulture, "<{0} {1}=\"{2}\"> {3} </{0}>", sectionName, "configProtectionProvider", providerName, encryptedXml);
}
internal static string EncryptSection(string clearXml, ProtectedConfigurationProvider provider)
{
XmlDocument xmlDocument = new XmlDocument {
PreserveWhitespace = true
};
xmlDocument.LoadXml(clearXml);
XmlNode xmlNode = provider.Encrypt(xmlDocument.DocumentElement);
return xmlNode.OuterXml;
}
}
}