PdfSmartCopy cause signature corrupt

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Hello,

I use PdfSmartCopy to merge two PDF files.

One of the PDF file contains a Digital Signature.
After I used PdfSmartCopy to merge them, there is not any signature filed
in the side bar of Adobe reader.

If I click on the signature field in the pdf page, it shows the signature
data is corrupted.

Is there anything I miss to do? Please help!


The following is my code to merge two files:



OutputStream os = new FileOutputStream(out);
Document document = new Document();

PdfSmartCopy copy = new PdfSmartCopy(document, os);



document.open();

 String[] files = { "pdf_has_signature.pdf", "another_pdf.pdf" };


PdfReader reader;
int n;

for (int i = 0; i < files.length; i++) {

            reader = new PdfReader(files[i]);
            // loop over the pages in that document
            n = reader.getNumberOfPages();


            for (int page = 1; page <= n; page++) {
                copy.addPage(copy.getImportedPage(reader, page));
            }
            cop

            copy.freeReader(reader);
            reader.close();

}

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<div dir=3D"ltr">Hello,<div><br></div><div>I use PdfSmartCopy to merge two =
PDF files.<br></div><div><br></div><div>One of the PDF file contains a Digi=
tal Signature.=C2=A0</div><div>After I used PdfSmartCopy to merge them, the=
re is not any signature filed in the side bar of Adobe reader.<br></div><di=
v><br></div><div>If I click on the signature field in the pdf page, it show=
s the signature data is corrupted.</div><div><br></div><div>Is there anythi=
ng I miss to do? Please help!</div><div><br></div><div><br></div><div>The f=
ollowing is my code to merge two files:</div><div><br></div><div><br></div>=
<div><br></div><div><div>OutputStream os =3D new FileOutputStream(out);</di=
v><div><span class=3D"" style=3D"white-space:pre">		</span></div><div><span=
 class=3D"" style=3D"white-space:pre">		</span></div><div>Document document=
 =3D new Document();</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>PdfSma=
rtCopy copy =3D new PdfSmartCopy(document, os);</div><div>=C2=A0 =C2=A0 =C2=
=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=
=A0 =C2=A0 =C2=A0 =C2=A0</div><div>document.open();</div><div>=C2=A0 =C2=A0=
 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0String[] files =3D { &quot;pdf_has_sig=
nature.pdf&quot;, &quot;another_pdf.pdf&quot; };</div><div>=C2=A0 =C2=A0 =
=C2=A0 =C2=A0=C2=A0</div><div><br></div><div>PdfReader reader;</div><div>in=
t n;</div><div><br></div><div>for (int i =3D 0; i &lt; files.length; i++) {=
</div><div>=C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 reader =3D new PdfReader(files[i]);</div><div>=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 // loop over the pages in that document</div><div>=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 n =3D reader.getNumberOfPages();</di=
v><div><br></div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div>=
<div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 for (int page =3D 1; page &l=
t;=3D n; page++) {</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 copy.addPage(copy.getImportedPage(reader, page));</div><div>=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div><div>=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 cop</div><div><br></div><div>=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 copy.freeReader(reader);</div><div>=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 reader.close();</div></div><div><br></div><div>}</=
div></div></div>

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