basicconstraints.md

description	ms.assetid	title	ms.topic	ms.date	topic_type	api_name	api_type	api_location
Represents the basic constraints extension of a certificate.	c21794f6-7654-4140-8114-0edb398d6de8	BasicConstraints object	reference	05/31/2018	APIRef kbSyntax	BasicConstraints	COM	Capicom.dll

BasicConstraints object

[CAPICOM is a 32-bit only component that is available for use in the following operating systems: Windows Server 2008, Windows Vista, Windows XP. Instead, use the X509BasicConstraintsExtension Class in the System.Security.Cryptography.X509Certificates namespace.]

The BasicConstraints object represents the basic constraints extension of a certificate.

When to use

The BasicConstraints object is used to perform the following tasks:

• Determine whether the basic constraints extension is present.
• Determine whether the basic constraints extension is marked critical.
• Determine whether the certificate is constrained to certificate authorities.
• Determine whether the path length constraint is present and retrieve the path length constraint value.

Members

The BasicConstraints object has these types of members:

• Properties

Properties

The BasicConstraints object has these properties.

Property	Access type	Description
IsCertificateAuthority	Read-only	Retrieves a Boolean value that indicates whether the certificate is for a certification authority (CA).
IsCritical	Read-only	Retrieves a Boolean value that indicates whether the basic constraint extension is marked critical.
IsPathLenConstraintPresent	Read-only	Retrieves a Boolean value that indicates whether the certificate's path length constraint is present.
IsPresent	Read-only	Retrieves a Boolean value that indicates whether the basic constraints extension is present. This is the default property.
PathLenConstraint	Read-only	Retrieves the value of the path length constraint.

 

Remarks

The BasicConstraints object cannot be created.

Requirements

Requirement	Value
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