hi ashwin , i have written a java code to add digital signature to pdf file
.
could u please help me out ....it compiles fine but while running its giving
an exception
C:\excel>java pdfsign1
java.io.IOException: Invalid keystore format
at sun.security.provider.JavaKeyStore.engineLoad(Unknown Source)
at sun.security.provider.JavaKeyStore$JKS.engineLoad(Unknown Source)
at java.security.KeyStore.load(Unknown Source)
at pdfsign1.main(pdfsign1.java:23)
i am creating a key with name "my_private_key.pfx" specified in the program
using the command
keytool -genkey -keyalg RSA -alias myname -keypass password -keystore
my_private_key.pfx
import com.lowagie.text.pdf.*;
import com.lowagie.text.Rectangle;
import java.security.*;
import java.io.*;
import java.awt.*;
import java.lang.*;
import javax.net.ssl.*;
import javax.net.ssl.KeyManager;
import javax.naming.*;
import javax.naming.Context;
public class pdfsign1{
public static void main(String args[]) throws IOException{
try {
//KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
//KeyStore ks = KeyStore.getInstance("pkcs12");
//ks.load(new FileInputStream("D:\\pdf\\pdf2\\digital\\my_private_key.pfx"),
"my_password".toCharArray());
//kmf.init(ks, "my_password".toCharArray());
SSLContext ctx=SSLContext.getInstance("SSL");
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
KeyStore ks = KeyStore.getInstance("JKS");
ks.load(new FileInputStream("c:\\excel\\export.cer"),
"my_password".toCharArray());
kmf.init(ks, "my_password".toCharArray());
ctx.init(kmf.getKeyManagers(),null,null);
//initSSLContext(kmf.getKeyManagers());
//KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
//ks.load(new FileInputStream("keystore.ks"), "my_password".toCharArray());
String alias = (String)ks.aliases().nextElement();
PrivateKey key = (PrivateKey)ks.getKey(alias,"my_password".toCharArray());
java.security.cert.Certificate[] chain = ks.getCertificateChain(alias);
PdfReader reader = new PdfReader("original.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.setCrypto(key, 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);
stp.close();
}
catch(Exception e) {e.printStackTrace();}
}
}
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