X509CertificateValidator Class

Definition

Namespace:

System.IdentityModel.Selectors

Assembly:

System.ServiceModel.Primitives.dll

Package:

System.ServiceModel.Primitives v8.0.0

Validates an X.509 certificate.

public ref class X509CertificateValidator abstract

public abstract class X509CertificateValidator

type X509CertificateValidator = class

Public MustInherit Class X509CertificateValidator

Inheritance

Object

X509CertificateValidator

Derived

System.IdentityModel.Tokens.X509NTAuthChainTrustValidator

Examples

public class MyX509CertificateValidator : X509CertificateValidator
{
    string allowedIssuerName;
    public MyX509CertificateValidator(string allowedIssuerName)
    {
        if (allowedIssuerName == null)
        {
            throw new ArgumentNullException("allowedIssuerName");
        }

        this.allowedIssuerName = allowedIssuerName;
    }
    public override void Validate(X509Certificate2 certificate)
    {
        // Check that there is a certificate.
        if (certificate == null)
        {
            throw new ArgumentNullException("certificate");
        }

        // Check that the certificate issuer matches the configured issuer
        if (allowedIssuerName != certificate.IssuerName.Name)
        {
            throw new SecurityTokenValidationException
              ("Certificate was not issued by a trusted issuer");
        }
    }
}

Public Class MyX509CertificateValidator
    Inherits X509CertificateValidator
    Private allowedIssuerName As String

    Public Sub New(ByVal allowedIssuerName As String)
        If allowedIssuerName Is Nothing Then
            Throw New ArgumentNullException("allowedIssuerName")
        End If

        Me.allowedIssuerName = allowedIssuerName

    End Sub

    Public Overrides Sub Validate(ByVal certificate As X509Certificate2)
        ' Check that there is a certificate.
        If certificate Is Nothing Then
            Throw New ArgumentNullException("certificate")
        End If

        ' Check that the certificate issuer matches the configured issuer
        If allowedIssuerName <> certificate.IssuerName.Name Then
            Throw New SecurityTokenValidationException("Certificate was not issued by a trusted issuer")
        End If

    End Sub
End Class

Remarks

Use the X509CertificateValidator class to specify how an X.509 certificate is deemed valid. This can be done using by deriving a class from X509CertificateValidator and overriding the Validate method.

Constructors

X509CertificateValidator()

Initializes a new instance of the X509CertificateValidator class.

Methods

CreateChainTrustValidator(Boolean, X509ChainPolicy)	Gets a validator that verifies the X.509 certificate by specifying the context and chain policy that is used to build and verify a trust chain.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)
Validate(X509Certificate2)	When overridden in a derived class, validates the X.509 certificate.