iTextSharp.text.pdf.PdfPublicKeySecurityHandler.AddRecipient C# (CSharp) Method

        public void AddRecipient(PdfPublicKeyRecipient recipient)
        {
            recipients.Add(recipient);
        }

 virtual public void AddRecipient(X509Certificate cert, int permission)
 {
     documentID = CreateDocumentId();
     publicKeyHandler.AddRecipient(new PdfPublicKeyRecipient(cert, permission));
 }