-none- 2007-10-01 - By Leonard Rosenthol
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I opened this PDF up in Acrobat 8.1 and it says that the document
hasn't been modified since it was signed, but the signature's
validity is unknown - which is correct since I don't have this sig in
my keystore.
What am I missing?
Leonard
On Sep 30, 2007, at 1:30 PM, Xavier Le Vourch wrote:
> -- --BEGIN PGP SIGNED MESSAGE-- --
> Hash: SHA1
>
> Hi,
>
> I've got the same problem with the timestamping code but in fact,
> while
> trying to get a small example together, I've found that the same error
> occurs also with just the signing part.
>
> The signing code is based on the doc to sign doc at:
>
> http://itextpdf.sourceforge.net/howtosign.html#howtosign
>
>
> The two pdf files are attached.
>
> The Java code consists of:
>
> =========
> com.lowagie.text.Document.compress = false;
> KeyStore ks = KeyStore.getInstance("pkcs12");
> ks.load(new FileInputStream(KEYSTORE), PASSWORD.toCharArray());
> String alias = (String)ks.aliases().nextElement();
> PrivateKey key = (PrivateKey)ks.getKey(alias, PASSWORD.toCharArray());
> Certificate[] chain = ks.getCertificateChain(alias);
> PdfReader reader = new PdfReader(IN);
> FileOutputStream fout = new FileOutputStream(OUT);
> PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0');
> PdfSignatureAppearance sap = stp.getSignatureAppearance();
> sap.setCrypto(key, chain, null, PdfSignatureAppearance.WINCER_SIGNED);
> sap.setReason(REASON);
> sap.setLocation(LOCATION);
> // comment next line to have an invisible signature
> sap.setVisibleSignature(new Rectangle(100, 100, 200, 200), 1, null);
> stp.close();
> =========
>
>
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