Oscar,
Oscar P wrote:
>
> Hi again,
>
> thaks for all answer.
>
> how i can sign in append mode to obtain original PDF?
>
> I sign with this code:
>
> PdfReader reader;
> PrivateKey privateKey = null;
> Certificate[] chain = null;
> privateKey = alm.getClavePrivada(alias, pwdPrivateKey);
> chain = alm.getKeyStore().getCertificateChain(alias);
> reader = new PdfReader(entrada);
> PdfStamper stamper;
> stamper = PdfStamper.createSignature(reader, salida,
> '\0',null,true);
> //this true is to append mode?
>
Yes, it is.
Oscar P wrote:
>
> PdfSignatureAppearance appearance =
> stamper.getSignatureAppearance();
> appearance.setCrypto(privateKey,chain,
> null,PdfSignatureAppearance.WINCER_SIGNED);
> Calendar signedDate = new GregorianCalendar();
> appearance.setSignDate(signedDate);
> try {
> stamper.close();
> } catch (Exception e) {
> throw new CifraFirmaException("Error al realizar la
> firma, no se pudo
> leer correctamente el PDF",e);
> }
>
> When i sign i get a unique revision, and this revision include the
> signature field.
>
>
> thaks for all.
>
Yes, the revision you create includes the signature field. The document
should also contain the former revision. I actually use a slightly different
approach here, but yours should also have that older revision inside. If
you're not sure, just post an example document and we'll check.
Regards, Michael.
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