Specifies whether an asymmetric key is created as a signature key or an exchange key.
Syntax
Remarks
The CspParameters.KeyNumber field initializes the CspKeyContainerInfo.KeyNumber property when you initialize a System.Security.Cryptography.CspKeyContainerInfo object with a System.Security.Cryptography.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 KeyNumber.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 KeyNumber.Signature value (2) to specify a signature key. This value corresponds to the AT_SIGNATURE value used in CAPI.
By default, the CspParameters.KeyNumber field specifies an exchange key.
Requirements
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0