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KeyNumber Enumeration

Specifies whether to create an asymmetric signature key or an asymmetric exchange key.

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

[SerializableAttribute]
[ComVisibleAttribute(true)]
public enum KeyNumber

Member nameDescription
Supported by the .NET Compact FrameworkExchangeAn exchange key pair used to encrypt session keys so that they can be safely stored and exchanged with other users.

This value corresponds to the AT_KEYEXCHANGE value used in the unmanaged Microsoft Cryptographic API (CAPI).

Supported by the .NET Compact FrameworkSignatureA signature key pair used for authenticating digitally signed messages or files.

This value corresponds to the AT_SIGNATURE value used in the unmanaged Microsoft Cryptographic API (CAPI).

Use the KeyNumber enumeration with the KeyNumber property to inspect a key type or with the KeyNumber field to specify a key type.

The following code example demonstrates how to use the KeyNumber enumeration to specify a key type for an RSACryptoServiceProvider object.

// Create a new CspParameters object.
CspParameters cspParams = new CspParameters();

// Specify an exchange key.
cspParams.KeyNumber = (int) KeyNumber.Exchange;

// Initialize the RSACryptoServiceProvider   
// with the CspParameters object.
RSACryptoServiceProvider RSACSP = new RSACryptoServiceProvider(cspParams);

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5, 2.0
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