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CngProvider Class

Encapsulates the name of a key storage provider (KSP) for use with Cryptography Next Generation (CNG) objects.

Namespace:  System.Security.Cryptography
Assembly:  System.Core (in System.Core.dll)

[HostProtectionAttribute(SecurityAction.LinkDemand, MayLeakOnAbort = true)]
public sealed class CngProvider : IEquatable<CngProvider>


The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: MayLeakOnAbort. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The CngProvider class is a utility class. It consists of static properties, comparison methods, and a private, internally maintained string that specifies a key storage provider.

The static properties return CngProvider objects. Each object's internal string is initialized to the provider name that corresponds to the name of the static property.

You can also use this class to create objects for provider types that are not covered by the static properties.

Several CNG classes (such as CngKey) accept CngProvider objects through a provider parameter. When the class receives the CngProvider object, it retrieves the embedded provider name by calling the object's Provider property.

Therefore, CngProvider serves as an enumeration of well-known providers. It lets you identify a provider by using a strongly typed value instead of a string.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5