Finally I did it. Peter's help was very useful to do it. But, at the moment, I don't know how to validate the state of revocation of the certificate (to validate it with CRL or with OCSP).
regards,
Luis
DI Randolph Kepplinger escribi�:
hello!
i saw that you have been posting on the subject digitally signing pdf. did you finally succeed and do you have a working example for this?
regards
randolph
On Tue, 2 Mar 2004, [ISO-8859-1] "S?lter, Peter" wrote:
Hi Luis, you need to calculate the signature over the whole PDF (without the contents-data).
Therefore it's the best to - fill the contents-field with a placeholder - write out the whole PDF to a ByteArray - calculate the hash-value and signature - replace the /Contents-Data with the new data in the byte array
It's useful to do the same procedure (set placeholder-data / write out / replace) with the /ByteRange value, too.
Regards, Peter
-----Urspr?ngliche Nachricht----- Von: Luis Pascual Forner [mailto:[EMAIL PROTECTED] Gesendet: Montag, 1. M?rz 2004 13:10 An: [EMAIL PROTECTED] Betreff: [iText-questions] How to modify a signature dictionary
Hi,
I need to modify the "/Contents" field from a signature dictionary after "addToBody" it. How can I do?.
thanks in advance,
Luis Pascual
-- Si su programa de correo le informa de que la firma no es v?lida, se puede deber a que no tiene instalado el certificado de la Autoridad Certificadora (CA). Lo puede obtener en http://www.pki.gva.es.
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-- Si su programa de correo le informa de que la firma no es v�lida, se puede deber a que no tiene instalado el certificado de la Autoridad Certificadora (CA). Lo puede obtener en http://www.pki.gva.es.
hello.pdf
Description: Adobe PDF document
Description: S/MIME Cryptographic Signature
