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CspParameters.KeyNumber Field

Specifies whether an asymmetric key is created as a signature key or an exchange key.

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

'Declaration
Public KeyNumber As Integer

The KeyNumber field initializes the KeyNumber property when you initialize a CspKeyContainerInfo object with a CspParameters object.

An exchange key is an asymmetric key pair used to encrypt session keys so that they can be safely stored and exchanged with other users. You can use the Exchange value (1) to specify an exchange key. This value corresponds to the AT_KEYEXCHANGE value used in the unmanaged Microsoft Cryptographic API (CAPI).

A signature key is an asymmetric key pair used for authenticating digitally signed messages or files. You can use the Signature value (2) to specify a signature key. This value corresponds to the AT_SIGNATURE value used in CAPI.

By default, the KeyNumber field specifies an exchange key.

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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