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X509CertificateValidator Class

Definition

Validates an X.509 certificate.

public ref class X509CertificateValidator abstract
public ref class X509CertificateValidator abstract : System::IdentityModel::Configuration::ICustomIdentityConfiguration
public abstract class X509CertificateValidator
public abstract class X509CertificateValidator : System.IdentityModel.Configuration.ICustomIdentityConfiguration
type X509CertificateValidator = class
type X509CertificateValidator = class
    interface ICustomIdentityConfiguration
Public MustInherit Class X509CertificateValidator
Public MustInherit Class X509CertificateValidator
Implements ICustomIdentityConfiguration
Inheritance
X509CertificateValidator
Derived
Implements

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.

Properties

ChainTrust

Gets a validator that validates the X.509 certificate using a trust chain.

None

Gets a validator that performs no validation on an X.509 certificate. As a result, an X.509 certificate is always considered to be valid.

PeerOrChainTrust

Gets a validator that verifies the certificate is in the TrustedPeople certificate store or by building a certificate trust chain. The certificate is trusted if it passes either verification method.

PeerTrust

Gets a validator that verifies the certificate is in the TrustedPeople certificate store.

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.

CreatePeerOrChainTrustValidator(Boolean, X509ChainPolicy)

Gets a validator that verifies the certificate is in the TrustedPeople certificate store or by specifying the context and chain policy that is used to build a certificate trust chain. The certificate is trusted if it passes either verification method.

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)
LoadCustomConfiguration(XmlNodeList)

When overridden in a derived class, loads custom configuration from XML.

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.

Applies to