Hi friends! I need to sign digitally documents in my ubuntu web server. I'm using TCPDF to generate and sign on fly documents and it works. My problem is in my smartcard, because the private key is blocked, so I can't export this to sign with TCPDF. I have only a java applet:http://www.pki.sanluis.gov.ar/PkiAsp/Paginas/Pagina.asp?PaginaId=54 and a Windows middleware to do this from a smart card. I can't export the private key from the smart card, but I need to sign documents on cloud. Have you any idea how can I do that? Thank you!!