Hi all,
I am developing a part of a DMS. While coding pdf signature verification
using iText, I found a signature type not yet handled. I am referring to
signatures with sha256WithRSAEncryption algorithm.
This is the first part of my code:
PdfReader reader = new PdfReader(pdfDoc);
AcroFields af = reader.getAcroFields();
ArrayList names = af.getSignatureNames();
/*
* verifica della firma del PDF
*/
if (names.size() > 0) {
KeyStore kall = PdfPKCS7.loadCacertsKeyStore();
for (int k = 0; k < names.size(); ++k) {
String sigName = (String)names.get(k);
if (af.signatureCoversWholeDocument(sigName)) {
PdfPKCS7 pk = af.verifySignature(sigName);
and it currently throws an exception at the last line. The exeption is
ExceptionConverter: java.security.NoSuchAlgorithmException
2.16.840.1.101.3.4.2.1 with 2.16.840.1.101.3.4.2.1 Signature not
available.
I browsed the archive of this list and found that this problem has
already been reported (13 Jul 2007), but it is not clear if and when it
has been solved.
I am having this error using iText 2.1.2u, but I also quickly tried
2.1.5 without luck.
Is there anyone working on this?
Bye,
Giuseppe
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