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CngKey.Import Method (Byte[], CngKeyBlobFormat)

Creates a new key by importing the specified key material into the default key storage provider (KSP) and using the specified format.

Namespace:  System.Security.Cryptography
Assembly:  System.Core (in System.Core.dll)
public static CngKey Import(
	byte[] keyBlob,
	CngKeyBlobFormat format


Type: System.Byte[]

An array that contains the key information.

Type: System.Security.Cryptography.CngKeyBlobFormat

An object that specifies the format of the keyBlob array.

Return Value

Type: System.Security.Cryptography.CngKey
A new key.

keyBlob or format is null.


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


All other errors.

The default KSP is MicrosoftSoftwareKeyStorageProvider.

Important noteImportant

On Windows operating systems before Windows 7 and Windows Server 2008 R2, some CNG key binary large object (BLOB) formats are not supported.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, 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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