KeyUsage object
[The KeyUsage object is available for use in the operating systems specified in the Requirements section. Instead, use the X509EnhancedKeyUsageExtension Class in the System.Security.Cryptography.X509Certificates namespace.]
The KeyUsage object provides read-only access to key usage properties of a certificate.
Members
The KeyUsage object has these types of members:
Properties
The KeyUsage object has these properties.
Property | Access type | Description |
---|---|---|
IsCritical |
Read-only |
Retrieves a Boolean value that indicates whether the KeyUsage extension is marked critical. |
IsCRLSignEnabled |
Read-only |
Retrieves a Boolean value that indicates whether the CRLSign bit is set. |
IsDataEnciphermentEnabled |
Read-only |
Retrieves a Boolean value that indicates whether the dataEncipherment bit is set. |
IsDecipherOnlyEnabled |
Read-only |
Retrieves a Boolean value that indicates whether the decipherOnly bit is set. |
IsDigitalSignatureEnabled |
Read-only |
Retrieves a Boolean value that indicates whether the digitalSignature bit is set. |
IsEncipherOnlyEnabled |
Read-only |
Retrieves a Boolean value that indicates whether the encipherOnly bit is set. |
IsKeyAgreementEnabled |
Read-only |
Retrieves a Boolean value that indicates whether the keyAgreement bit is set. |
IsKeyCertSignEnabled |
Read-only |
Retrieves a Boolean value that indicates whether the keyCertSign bit is set. |
IsKeyEnciphermentEnabled |
Read-only |
Retrieves a Boolean value that indicates whether the keyEncipherment bit is set. |
IsNonRepudiationEnabled |
Read-only |
Retrieves a Boolean value that indicates whether the nonRepudiationEnabled bit is set. |
IsPresent |
Read-only |
Retrieves a Boolean value that indicates whether the KeyUsage extension is present. This is the default property. |
Remarks
The KeyUsage object cannot be created.
Requirements
Requirement | Value |
---|---|
Redistributable |
CAPICOM 2.0 or later on Windows Server 2003 and Windows XP |
DLL |
|
See also