CertificateValidity Enumeration

Represents the validity status of an X.509 certificate.

Syntax

public enum CertificateValidity

Members

Member	Description
Valid	The certificate is valid.
Invalid	The certificate is invalid.
Expired	The certificate has expired.
NotYetValid	The certificate is not yet valid.
Untrusted	The certificate is not trusted.
Revoked	The certificate has been revoked.
Unknown	The validity of the certificate is unknown.

Remarks

The CertificateValidity enumeration is used by the SslPolicy class to determine the validity of an X.509 certificate during SSL/TLS communication.

When a client or server presents a certificate, the security layer validates it against various criteria, including:

• The certificate's issuance chain.
• The certificate's expiration date.
• Whether the certificate has been revoked.
• Whether the certificate is trusted by the local system.

The resulting validity status is returned as a member of the CertificateValidity enumeration.

Requirements

Requirement	Description
Namespace	System.Net.Security
Assembly	System.dll

See Also

• SslPolicy Class
• System.Net.Security Namespace