X509CertificateStore.FindCertificateByKeyIdentifier Method

'Usage
Dim keyIdentifier() As Byte
Dim returnValue As X509CertificateCollection
Dim x509CertificateStore1 As X509CertificateStore
returnValue = x509CertificateStore1.FindCertificateByKeyIdentifier(keyIdentifier)

private Microsoft.Web.Services2.Security.X509.X509Certificate GetCertificateUsingKeyIdentifer(bool IsTokenForSigning)
{
    // Open up the My certificate store for the currently logged
    // in user.
    X509CertificateStore store;
    store = X509CertificateStore.CurrentUserStore(
        X509CertificateStore.MyStore);
    bool open = store.OpenRead();

    Microsoft.Web.Services2.Security.X509.X509Certificate cert = null;
    byte[] certKeyID;
    if (IsTokenForSigning)
        certKeyID = new byte[]{0x48, 0x1b, 0xe8, 0xec, 0xbd, 0x32, 0xc, 0xd6, 0x39, 0xa8, 0x9b, 0xce, 0xea, 0x5a, 0x2a, 0xe4, 0x66, 0x76, 0x62, 0x42};
    else
        certKeyID = new byte[]{0xe8, 0x8f, 0xe1, 0x8a, 0x62, 0x6, 0xd6, 0x1a, 0x85, 0xf6, 0x5a, 0x26, 0x81, 0x0, 0x56, 0x29, 0xb1, 0x8a, 0x29, 0x47};

    // Search for a certifacte based on the
    // certificate's key identifier.
    X509CertificateCollection certs =
        store.FindCertificateByKeyIdentifier(certKeyID);
        
    if (certs.Count > 0)
        // Obtain the first matching certificate.
        cert = ((Microsoft.Web.Services2.Security.X509.X509Certificate) certs[0]);
    else
        // No certificates matched the search criteria.
        cert = null;

    // Close the X.509 certificate store.
    if (store != null) { store.Close(); }

    return cert;
}