Hey Andreas,
about the ASN1 byte wrapper, i think im not using it when i use:
PdfSignature dic1 = new PdfSignature(PdfName.ADOBE_PPKLITE,
PdfName.ADBE_PKCS7_DETACHED);
dic1.setDate(new PdfDate(appearance.getSignDate()));
dic1.setName(PdfPKCS7.getSubjectFields((X509Certificate)appearance.getCertChain()[0]).getField("CN"));
dic1.setReason(appearance.getReason());
dic1.setLocation(appearance.getLocation());
dic1.setContact(appearance.getContact());
appearance.setCryptoDictionary(dic1);
int csize = 128;
HashMap<PdfName, Integer> exc = new HashMap<PdfName, Integer>();
exc.put(PdfName.CONTENTS, new Integer(csize * 2 + 2));
appearance.preClose(exc);
when i use this approach i dont use sig.getEncodedPKCS1() that returns the
131 byte array. In this case i just use:
dic.put(PdfName.CONTENTS, new
PdfString(signedHash).setHexWriting(true));
and the signedHash is the digest signed with the smartcard (which is a 128
byte array)
as for the DigestInfo structure, i dont really understand what you mean, im
new to all of this. Is the problem the digest i generate from the file's
inputStream or the the method i use to sign that digest?
I dont think i have an alternative to sign it since the smartcard uses
pkcs11 and i believe i need the wrapper im currently using (though i might
be wrong of course).
A few things i forgot to mention that might matter is that im using the
latest version of itext(5.0.4) and another thing is that when i used that
detached mode i couldnt see the algorithm used and certificates in the pdf
that was created after being signed.
Regards,
Pedro
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