Thanks for your prompt reply.
I created self signed digital id in two differnent ways
First by using command line
keytool -genkey -keyalg RSA -alias jaya -keypass matrix -keystore keystore.ks
when i use this key i got following exception
java.io.IOException: DerInputStream.getLength(): lengthTag=109, too big.
it also fails sighing in acrobat professional.
Second by using tool given by acrobat professional.
when i use this key following key
Exception in thread "main" java.lang.NoClassDefFoundError: org/bouncycastle/asn1/DEREncodable
i have downloaded latest version of itext from svn and compiled it.
Here is the code that i used to sign the PDF.
ks = KeyStore.getInstance("pkcs12");
ks.load(new FileInputStream("jaya.pfx"), "matrix321".toCharArray());
String alias = (String) ks.aliases().nextElement();
PrivateKey key = (PrivateKey) ks.getKey(alias, "matrix321".toCharArray());
Certificate[] chain = ks.getCertificateChain(alias);
PdfReader reader = new PdfReader("signature.pdf");
FileOutputStream fout = new FileOutputStream("signed.pdf");
PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0');
PdfSignatureAppearance sap = stp.getSignatureAppearance();
sap.setCrypto(key, chain, null,
PdfSignatureAppearance.WINCER_SIGNED);
sap.setReason("I'm the author");
sap.setLocation("Kathmandu");
// comment next line to have an invisible signature
sap.setVisibleSignature(new Rectangle(100, 100, 200, 200), 1, null);
stp.close();
Please help me. where did i make mistake??
Regards
Jaya N Pasachhe
Paulo Soares wrote:
You'll be stuck forever if you don't provide more details.
Where did you get the signature file from?
Does it also fail if signing in Acrobat?
What iText version are you using?
What particular code are you using from
http://itextpdf.sourceforge.net/howtosign.html?
Paulo
> -----Original Message-----
> From: itext-questions-bounces@lists.sourceforge.net
> [mailto:itext-questions-bounces@lists.sourceforge.net] On
> Behalf Of linkjaya
> Sent: Monday, July 16, 2007 9:58 AM
> To: itext-questions@lists.sourceforge.net
> Subject: [iText-questions] Problem while digitally sighning
> pdf using IText.
>
> Hello all, I want to add a digital signature in pdf file
> containing singature field using Itext. i did as given in
> http://itextpdf.sourceforge.net/howtosign.html. but i always
> get following exception while loading the signature file.
> java.io.IOException: DerInputStream.getLength():
> lengthTag=109, too big. can some one know, where is my
> problem? I am stuck over here. Any help will be appreciated.
> Regards Jaya N Pasachhe.
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