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Represents a single certificate extension. |
cca3121d-0f0f-4de2-a225-6dd3910078d7 |
Extension object (Mmcobj.h) |
reference |
05/31/2018 |
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[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 X509Extension Class in the System.Security.Cryptography.X509Certificates namespace.]
The Extension object represents a single certificate extension.
The Extension object is used to perform the following tasks:
- Retrieve the OID of the certificate extension.
- Retrieve the certificate extension data represented by an EncodedData object.
- Determine whether the certificate extension is marked as critical.
The Extension object has these types of members:
The Extension object has these properties.
Property | Access type | Description |
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EncodedData |
Read-only |
Retrieves the encoded data for the extension. |
IsCritical |
Read-only |
Retrieves a Boolean value that indicates whether the extension is marked critical. |
OID |
Read-only |
Retrieves the object identifier for the extension. This is the default property. |
The Extension object cannot be created.
The Extension object is used by the Extensions collection object.
Requirement | Value |
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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 |
Header |
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DLL |
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