X509CertificateCredentials class

Contains an X509 certificate that can be used for WS-Security/X509 certificate-based authentication for Exchange Web Services (EWS).

Namespace:  Microsoft.Exchange.WebServices.Data
Assembly:  Microsoft.Exchange.WebServices (in Microsoft.Exchange.WebServices.dll)

public sealed class X509CertificateCredentials : WSSecurityBasedCredentials

Any public static ( in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.