KeyNumber Enumeration


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

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

Public Enumeration KeyNumber

Member nameDescription

An exchange key pair used to encrypt session keys so that they can be safely stored and exchanged with other users.


A signature key pair used for authenticating digitally signed messages or files.

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.
Dim cspParams As New CspParameters()

' Specify an exchange key.
cspParams.KeyNumber = Fix(KeyNumber.Exchange)

' Initialize the RSACryptoServiceProvider  
' with the CspParameters object.
Dim RSACSP As New RSACryptoServiceProvider(cspParams)

.NET Framework
Available since 2.0
Windows Phone Silverlight
Available since 7.1
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