Hi Paulo,
I am using the iText-2.1.7.
It is the last release version, any idea of it? please help me.
Best regards,
Eric
On Tue, Sep 22, 2009 at 7:07 PM, Paulo Soares <psoa...@glintt.com> wrote:
> You are not using the latest iText version. The sign date is set in the
> constructor and can't be null unless you set it null.
>
> Paulo
>
> > -----Original Message-----
> > From: Eric Chow [mailto:eric...@gmail.com]
> > Sent: Tuesday, September 22, 2009 10:55 AM
> > To: Post all your questions about iText here
> > Subject: Re: [iText-questions] "External Signature with
> > SmartCard" in Java example!
> >
> > Hi all,
> >
> > I tried to use the following code, but some exception raised:
> >
> >
> > try {
> > String configFile = "c:/esigntrust/config/pkcs11.cfg";
> >
> > SunPKCS11 pkcs11 = new SunPKCS11(configFile);
> > Security.addProvider(pkcs11);
> >
> > char[] password = getPassword("Input", "Password");
> >
> > KeyStore ks = KeyStore.getInstance("PKCS11");
> > ks.load(null, password);
> >
> > String alias = getAlias(ks, 1);
> > // String alias = getSelQCAliasFromSM(configFile,
> > Constant.PIN);
> >
> > X509Certificate cert =
> > getX509CertFormSM(configFile, password,
> > alias);
> >
> > System.out.println(">>>" + cert.getSubjectDN().getName());
> >
> >
> > PrivateKey privateKey = (PrivateKey)
> > ks.getKey(alias, password);
> >
> > Certificate[] chain = ks.getCertificateChain(alias);
> > System.out.println(chain[0].getPublicKey());
> >
> > PdfReader reader = new PdfReader("doc/test1.pdf");
> > FileOutputStream fout = new
> > FileOutputStream("doc/test1_signed.pdf");
> > PdfStamper stp =
> > PdfStamper.createSignature(reader, fout, '\0');
> > PdfSignatureAppearance sap = stp.getSignatureAppearance();
> > sap.setCrypto(privateKey, chain, null,
> > PdfSignatureAppearance.SELF_SIGNED);
> > sap.setReason("I'm the author");
> > sap.setLocation("Lisbon");
> > // comment next line to have an invisible signature
> > sap.setVisibleSignature(new Rectangle(100, 100,
> > 200, 200), 1, null);
> > sap.setExternalDigest(new byte[2048], null, "RSA");
> > sap.preClose();
> > PdfPKCS7 sig = sap.getSigStandard().getSigner();
> > Signature sign = Signature.getInstance("SHA1withRSA");
> > sign.initSign(privateKey);
> > byte buf[] = new byte[8192];
> > int n;
> > java.io.InputStream inp = sap.getRangeStream();
> > while ((n = inp.read(buf)) > 0) {
> > sign.update(buf, 0, n);
> > }
> > sig.setExternalDigest(sign.sign(), null, "RSA");
> > PdfDictionary dic = new PdfDictionary();
> > dic.put(PdfName.CONTENTS, new
> > PdfString(sig.getEncodedPKCS1()).setHexWriting(true));
> > sap.close(dic);
> >
> >
> >
> > } catch(Exception e) {
> > e.printStackTrace();
> > }
> >
> >
> >
> > ===========================================
> > java.lang.NullPointerException
> > at java.util.Calendar.setTime(Calendar.java:1070)
> > at
> > com.lowagie.text.pdf.PdfSignatureAppearance.getSignDate(PdfSig
> > natureAppearance.java:841)
> > at
> > com.lowagie.text.pdf.PdfSignatureAppearance.preClose(PdfSignat
> > ureAppearance.java:992)
> > at
> > com.lowagie.text.pdf.PdfSignatureAppearance.preClose(PdfSignat
> > ureAppearance.java:920)
> > at Sign.main(Sign.java:96)
> >
> >
> >
> >
> > Any suggestion?
> >
> > Best regards,
> > Eric
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > On Tue, Sep 22, 2009 at 5:45 PM, Eric Chow <eric...@gmail.com> wrote:
> >
> >
> > Hello,
> >
> > Any Java iText experts that have a simple example to
> > sign PDF with external signature approach?
> >
> > Please give me a hand and show me a simple example.
> >
> > Since I am new in iText, I can't totally understand the
> > example of iTextSharp. It is better to show me a Java code,
> > thank very much.
> >
> > Best regards,
> > Eric
> >
> >
> >
> >
> >
>
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Come build with us! The BlackBerry® Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9-12, 2009. Register now!
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_______________________________________________
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Buy the iText book: http://www.1t3xt.com/docs/book.php
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You can also search the keywords list: http://1t3xt.info/tutorials/keywords/
