ExtendedKeyUsage object

[CAPICOM is a 32-bit only component that is available for use in the following operating systems: Windows Server 2008, Windows Vista, and Windows XP. Instead, use the X509EnhancedKeyUsageExtension Class in the System.Security.Cryptography.X509Certificates namespace.]

The ExtendedKeyUsage object provides read-only access to the extended key usage (EKU) properties of a certificate.

Members

The ExtendedKeyUsage object has these types of members:

Properties

The ExtendedKeyUsage object has these properties.

Property Access type Description
EKUs
Read-only
EKUs collection that contains the EKU objects for the certificate.
IsCritical
Read-only
Retrieves a Boolean value that indicates whether the EKU extension is marked critical.
IsPresent
Read-only
Retrieves a Boolean value that indicates whether the EKU extension is present.
This is the default property.

 

Remarks

The ExtendedKeyUsage object cannot be created.

Requirements

End of client support
Windows Vista
End of server support
Windows Server 2008
Redistributable
CAPICOM 2.0 or later on Windows Server 2003 and Windows XP
DLL
Capicom.dll

See also

Cryptography Objects