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CngKey.Create Method (CngAlgorithm)

Creates a CngKey object that can be used with the specified algorithm.

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

public static CngKey Create(
	CngAlgorithm algorithm


Type: System.Security.Cryptography.CngAlgorithm

The algorithm that the key will be used with.

Return Value

Type: System.Security.Cryptography.CngKey
An ephemeral key.


algorithm is null.


Cryptography Next Generation (CNG) is not supported on this system.


All other errors.

This overload creates a key without a name, which means that the key is ephemeral (that is, it will not be persisted). It also creates a default CngKeyCreationParameters object that specifies a default CngProvider and other advanced parameters for the key.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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