pavithra murthy

Hello,

User when he entered plan "platinum"on jsp page...first servlet and finally DAOImplementation class gets called. Now the someAmountMoney1 variable will have the total investment amount i receive after 3 years. This I want to display it on JSP.

Could anyone provide me suggestion on how the value of variable in method can be called in JSP and display value stored in variable to user?

i have a condition implemented in method :
public boolean getOutManageInvestment(String accountID, String password,
double someAmountMoney, String plan) throws MyWebBankException {

..............
-----------
double interestrate;
if (plan.equalsIgnoreCase("PLATINUM"))
{
interestrate=0.70; double someAmountMoney1=0.0;
System.out.println("Amount you entered is"+someAmountMoney);
someAmountMoney1=(someAmountMoney+someAmountMoney*interestrate)*3;
System.out.println("Amount you receive after period of 3 years you will receive"+someAmountMoney1);
}

Hi Friends,

I tried to run an ejb project... and followed the steps in the below blog
http://javaeenotes.blogspot.ca/2010/04/developing-ejb-30-in-eclipse.html

In the above link, it says you can export the project as .jar and deploy in autodeploy folder of Glassfish.
1) I started Glassfish and was not able to find autodeploy folder.
2) By putting in that folder, what actually happens...I mean what is the use of writing this application and exporting and putting into this folder....
After this, what do I need to do. Could you please help me with this?

Thank you

Hi all,

I was searching for a java code with have 1000 lines for a refactoring project.
The main goal for this is that I need to identify smells and should be refactored.

Please can anyone provide me your suggestions on how can progress on this?

hello friends
i have written a java code to digitally sign an email. the program compiles fine . But while running i am getting an error.
please could you help me out .
i have used jars

1. javamail-crypto-bouncycastle-smime_060622.jar
2. javamail-crypto_060622.jar
3. bcmail-jdk15-144.jar


import java.io.*; import java.security.*; import java.net.*; import javax.mail.*; import javax.mail.internet.MimeMessage; //suchinth import net.suberic.crypto.*; import net.suberic.crypto.EncryptionUtils; import java.lang.*; //suchinth import javax.mail.*; import javax.mail.internet.*; import java.util.Set; import java.util.Properties; import java.security.Key; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; public class digitalsigningemail { public static void main(String[] args) { try { //suchinth String from = "pavithra.k@in.bosch.com"; String to = "pavithra.k@in.bosch.com"; String subject = "Invitation to work !!"; String body = "We request you people to join us at the earliest."; //suchinth // Get session Properties props = System.getProperties(); //props.setProperty("mail.smtp.host", "myhost"); props.put("mail.smtp.host", "rb-smtp-ext.bosch.com"); //pavi Session session = Session.getInstance(props, null); // Create message MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(from)); String[] recipients = to.split(","); //please find the modified for loop here which suits fine for 1.5 jdk //suchinth /*for (String recipient : recipients) { message.addRecipient(Message.RecipientType.TO, new InternetAddress(recipient)); }*/ for (int i=0;i<recipients.length;i++){ message.addRecipient(Message.RecipientType.TO, new InternetAddress(recipients[i])); } //suchinth message.setSubject(subject); // Add message body message.setText(body); //suchinth // Digitally sign email EncryptionUtils smimeUtils = EncryptionManager.getEncryptionUtils(EncryptionManager.SMIME); EncryptionKeyManager smimeKeyMgr = smimeUtils.createKeyManager(); char[] smimePw = new String("my_password").toCharArray(); //e:/mycert.pfx smimeKeyMgr.loadPrivateKeystore(new FileInputStream(new File("e:/keystore.p12")), smimePw); Key smimeKey = smimeKeyMgr.getPrivateKey("mykey", smimePw); EncryptionUtils eu = EncryptionManager.getEncryptionUtils(EncryptionManager.SMIME); message = eu.signMessage(session, message, smimeKey); //suchinth Transport.send(message); } //try catch(Exception e) {e.printStackTrace();} } //main }

hello friend,

i need to write a java code to digitally sign an email....which jar do i need to use,,please could anyone help me out.
digitally signing a complete email is it possible in java.

hello friend ,

i have written a java code for digitally signing and password protect a pdf document using itext.jar...
now what is happening is i am using export.cer and keystore.ks which i created using a keytool command in command prompt. so when i open the pdf the signature is invalid ...only when i manually click on the signature and verify it then it will get validated...also when i send the pdf to my friends computer the same thing is happening .Could anyone please help me out in solving this issue..
is this because i am using some non trusted certificate and keystore

Also if i have to get a trusted certificate from Versign or so...how actually do they give me the private key similar to keystore.ks
the code is given below . please could anyone help me out !!!
import java.io.FileOutputStream; import java.util.*; import java.io.*; import com.lowagie.text.pdf.PdfEncryptor; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfStamper; import com.lowagie.text.pdf.PdfWriter; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.AcroFields; import com.lowagie.text.pdf.PdfPKCS7; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfSignatureAppearance; import com.lowagie.text.pdf.PdfStamper; import com.lowagie.text.pdf.*; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.security.KeyStore; import java.security.PrivateKey; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.Calendar; import java.util.Collection; import java.util.Iterator; public class testencrypt { public static void main(String[] args) throws IOException { try { String password="";String username=""; //.................... HashMap hm = new HashMap(); BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in) ); System.out.println("USERNAME"+":"+"PASSWORD"); hm .put("pavithra", "pvm4kor"); hm .put("shompa", "sos5kor"); hm .put("vinod", "vim2kor"); hm .put("shiva", "snk3kor"); // Get a set of the entries Set set = hm.entrySet(); // Get an iterator Iterator i = set.iterator(); System.out.println("Please enter your username"); username = dataIn.readLine(); // Display elements String mName; while(i.hasNext()) { Map.Entry me = (Map.Entry)i.next(); System.out.print(me.getKey() + ": "); System.out.println(me.getValue()); //cheks when username is entered with the password if (username.equals((String)me.getKey())) { password= (String)me.getValue(); System.out.println("password "+password); } //code password protect pdf if (password.equals((String)me.getValue())) { System.out.println("hello"); // mName=(String)me.getValue(); PdfReader readerx = new PdfReader("d:\\Exportbegleitdokument.pdf"); PdfStamper stamper = new PdfStamper(readerx, new FileOutputStream("d:\\protectedPassword.pdf")); //stamper.setEncryption("Hello".getBytes(), password.getBytes(), PdfWriter.AllowPrinting | PdfWriter.AllowCopy, PdfWriter.STRENGTH40BITS); stamper.setEncryption("Hello".getBytes(),password.getBytes(), PdfWriter.AllowPrinting| PdfWriter.AllowCopy, PdfWriter.STRENGTH40BITS ); stamper.close(); //digitally signing pdf PdfReader reader = new PdfReader("d:\\protectedPassword.pdf",password.getBytes()); int nomPage = reader.getNumberOfPages(); System.out.println("nomPage: "+nomPage); ///---------------------------------- //vvvvvvvvvvvvvvvvvvvvvvvvvvvvdigitally signing code try{ KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType()); ks.load(new FileInputStream("keystores.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("ch01out.pdf"); for (int j=1; j<=nomPage; j++) { FileOutputStream fout = new FileOutputStream("signed"+j+".pdf"); //PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0'); PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0', null, true); //PdfStamper.setEncryption(chain,AllowDegradedPrinting,ENCRYPTION_AES); PdfSignatureAppearance sap = stp.getSignatureAppearance(); sap.setCrypto(key, chain, null, PdfSignatureAppearance.VERISIGN_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), j, null); stp.close(); reader = new PdfReader("signed"+j+".pdf",password.getBytes()); } for(int j=1;j<=nomPage;j++) { File fileStr = new File("signed"+j+".pdf"); if(j!=nomPage) { fileStr.delete(); } //to verify sign if(j == nomPage) { try { CertificateFactory cf = CertificateFactory.getInstance("X509"); //Collection col = cf.generateCertificates(new FileInputStream("exports.cer")); Collection col = cf.generateCertificates(new FileInputStream("d:\\VeriSign Class 1 Public Primary Certification Authority - G3.cer")); KeyStore kall = KeyStore.getInstance(KeyStore.getDefaultType()); kall.load(null, null); for (Iterator it = col.iterator(); it.hasNext();) { X509Certificate cert = (X509Certificate)it.next(); kall.setCertificateEntry(cert.getSerialNumber().toString(Character.MAX_RADIX), cert); } //KeyStore kall = PdfPKCS7.loadCacertsKeyStore(); PdfReader reader2 = new PdfReader("signed"+j+".pdf"); AcroFields af = reader2.getAcroFields(); ArrayList names = af.getSignatureNames(); for (int k = 0; k < names.size(); ++k) { String name = (String)names.get(k); System.out.println("Signature name: " + name); System.out.println("Signature covers whole document: " + af.signatureCoversWholeDocument(name)); System.out.println("Document revision: " + af.getRevision(name) + " of " + af.getTotalRevisions()); PdfPKCS7 pk = af.verifySignature(name); Calendar cal = pk.getSignDate(); java.security.cert.Certificate pkc[] = pk.getCertificates(); System.out.println("Subject: " + PdfPKCS7.getSubjectFields(pk.getSigningCertificate())); System.out.println("Document modified: " + !pk.verify()); Object fails[] = PdfPKCS7.verifyCertificates(pkc, kall, null, cal); if (fails == null) System.out.println("Certificates verified against the KeyStore"); else System.out.println("Certificate failed: " + fails[1]); } } catch(Exception e) {e.printStackTrace();} } } } catch(Exception e) {e.printStackTrace();} //vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv ///--------------------------------- } }//while }//first try catch(Exception ex) {ex.printStackTrace();}; }//main }//class

actually i had written a java code to password protect and digital sign a pdf file . in this program i am using private key and export.cer (public key certificate) . now the problem with this code i am facing is the digital signature is valid in my system and if i mail it to my friend the signature signed by me is becoming invalid .

the above two was created using java keytool command in command prompt .

so i thought it is problem with the certificate since it was not trusted one . so i planned to take it from verisign and trying with the openssl command .
do i need to install something in my friends system so that the signature becomes valid .

please could you help me out

D:\>openssl genrsa -des3 1024>VeriSign.key


'openssl' is not recognized as an internal or external command,
operable program or batch file.
this is the error message i am getting

please could anyone tell me "what is openssl"
at office in command prompt i tried with this command in command prompt

openssl genrsa -des3 1024>VeriSign.key ( it is working there)

but when at home in command prompt i use the same command its failing .
please could anyone explain to me

hello friend ,

i have written a java code to digital sign and password protect pdf file . i have used keystore.ks and exports.cer
exports.cer is my public key certificate which i have created using command in command prompt

both created in cmd prompt using below commands
C:\>keytool -genkey -keyalg RSA -alias myname -keypass my_password -keystore key stores.ks Enter keystore password: my_password What is your first and last name? [Unknown]: pavi What is the name of your organizational unit? [Unknown]: rao What is the name of your organization? [Unknown]: rbei What is the name of your City or Locality? [Unknown]: bangalore What is the name of your State or Province? [Unknown]: karnatake What is the two-letter country code for this unit? [Unknown]: in Is CN=pavi, OU=rao, O=rbei, L=bangalore, ST=karnatake, C=in correct? [no]: y C:\>keytool -export -alias myname -file exports.cer -keystore keystores.ks Enter keystore password: my_password Certificate stored in file <exports.cer>

when i execute the java program the signed pdf when i open the Signature is valid . But when i send the same signed pdf to my collegue's system and when she opens it the signature is invalid .

Do i need to install anything in my collegues system also . Please could anyone help me out !!!

Please could anyone tell me on both client and server side only public key is used.No private key is needed .

hello friend ,

i modified the program and put the password in PDFReader . but that exception is not going ..bad user password...but however i am getting the protected signed pdf ....but am getting signature in only one pdf..
please could you help me out ..

import java.io.FileOutputStream; import java.util.*; import java.io.*; import com.lowagie.text.pdf.PdfEncryptor; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfStamper; import com.lowagie.text.pdf.PdfWriter; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.AcroFields; import com.lowagie.text.pdf.PdfPKCS7; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfSignatureAppearance; import com.lowagie.text.pdf.PdfStamper; import com.lowagie.text.pdf.*; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.security.KeyStore; import java.security.PrivateKey; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.Calendar; import java.util.Collection; import java.util.Iterator; public class EncryptPDF { public static void main(String[] args) throws Exception { try { String password="";String username=""; //.................... HashMap hm = new HashMap(); BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in) ); System.out.println("USERNAME"+":"+"PASSWORD"); hm .put("pavithra", "pvm4kor"); hm .put("shompa", "sos5kor"); hm .put("vinod", "vim2kor"); hm .put("shiva", "snk3kor"); // Get a set of the entries Set set = hm.entrySet(); // Get an iterator Iterator i = set.iterator(); System.out.println("Please enter your username"); username = dataIn.readLine(); // Display elements String mName; while(i.hasNext()) { Map.Entry me = (Map.Entry)i.next(); System.out.print(me.getKey() + ": "); System.out.println(me.getValue()); //cheks when username is entered with the password if (username.equals((String)me.getKey())) { password= (String)me.getValue(); System.out.println("password"+password); } //code password protect pdf if (password.equals((String)me.getValue())) { System.out.println("hello"); // mName=(String)me.getValue(); PdfReader readerx = new PdfReader("d:\\password\\Password_Based_Encryption_20060501.pdf"); PdfStamper stamper = new PdfStamper(readerx, new FileOutputStream("Encrypted1.pdf")); //stamper.setEncryption("Hello".getBytes(), password.getBytes(), PdfWriter.AllowPrinting | PdfWriter.AllowCopy, PdfWriter.STRENGTH40BITS); stamper.setEncryption("Hello".getBytes(),password.getBytes(), PdfWriter.AllowPrinting| PdfWriter.AllowCopy, PdfWriter.STRENGTH40BITS ); stamper.close(); //removed } } }//while //digitally signing pdf PdfReader reader = new PdfReader("Encrypted1.pdf",password.getBytes()); int nomPage = reader.getNumberOfPages(); System.out.println("nomPage: "+nomPage); //vvvvvvvvvvvvvvvvvvvvvvvvvvvvdigitally signing code try { KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType()); ks.load(new FileInputStream("d:\\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("ch01out.pdf"); for (int j=1; j<=nomPage; j++) { FileOutputStream fout = new FileOutputStream("signed"+j+".pdf"); //PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0'); PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0', null, true); //PdfStamper.setEncryption(chain,AllowDegradedPrinting,ENCRYPTION_AES); PdfSignatureAppearance sap = stp.getSignatureAppearance(); sap.setCrypto(key, chain, null, PdfSignatureAppearance.WINCER_SIGNED); sap.setReason("I'm the author"); sap.setLocation("Karnataka"); // comment next line to have an invisible signature sap.setVisibleSignature(new Rectangle(100, 100, 200, 200), j, null); stp.close(); reader = new PdfReader("signed"+j+".pdf"); } for(int j=1;j<=nomPage;j++) { File fileStr = new File("signed"+j+".pdf"); if(j!=nomPage) { fileStr.delete(); } //to verify sign if(j == nomPage) { try { CertificateFactory cf = CertificateFactory.getInstance("X509"); Collection col = cf.generateCertificates(new FileInputStream("d:\\export.cer")); KeyStore kall = KeyStore.getInstance(KeyStore.getDefaultType()); kall.load(null, null); for (Iterator it = col.iterator(); it.hasNext();) { X509Certificate cert = (X509Certificate)it.next(); kall.setCertificateEntry(cert.getSerialNumber().toString(Character.MAX_RADIX), cert); } //KeyStore kall = PdfPKCS7.loadCacertsKeyStore(); PdfReader reader2 = new PdfReader("signed"+j+".pdf"); AcroFields af = reader2.getAcroFields(); ArrayList names = af.getSignatureNames(); for (int k = 0; k < names.size(); ++k) { String name = (String)names.get(k); System.out.println("Signature name: " + name); System.out.println("Signature covers whole document: " + af.signatureCoversWholeDocument(name)); System.out.println("Document revision: " + af.getRevision(name) + " of " + af.getTotalRevisions()); PdfPKCS7 pk = af.verifySignature(name); Calendar cal = pk.getSignDate(); java.security.cert.Certificate pkc[] = pk.getCertificates(); System.out.println("Subject: " + PdfPKCS7.getSubjectFields(pk.getSigningCertificate())); System.out.println("Document modified: " + !pk.verify()); Object fails[] = PdfPKCS7.verifyCertificates(pkc, kall, null, cal); if (fails == null) System.out.println("Certificates verified against the KeyStore"); else System.out.println("Certificate failed: " + fails[1]); } //for k=0 } //try catch(Exception e) {e.printStackTrace();} } //if(j == nomPage) } // for(int j=1;j<=nomPage;j++) } catch(Exception e) {e.printStackTrace();} // } //if password correc //repplace while colose here //....................... } //try catch(Exception e) {e.printStackTrace();} } //main close }//encryptpdf close

please could anyone help me out ...i have written this code for digitally signing pdf. here
when i compile the code works fine but after running and entering a user id i get an exception

D:\password>java EncryptPDF
USERNAME:PASSWORD
Please enter your username
shiva
pavithra: pvm4kor
shompa: sos5kor
shiva: snk3kor
passwordsnk3kor
hello
Exception in thread "main" java.io.IOException: Bad user password
at com.lowagie.text.pdf.PdfReader.readDecryptedDocObj(Unknown Source)
at com.lowagie.text.pdf.PdfReader.readDocObj(Unknown Source)
at com.lowagie.text.pdf.PdfReader.readPdf(Unknown Source)
at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
at EncryptPDF.main(EncryptPDF.java:85)


import java.io.FileOutputStream; import java.util.*; import java.io.*; import com.lowagie.text.pdf.PdfEncryptor; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfStamper; import com.lowagie.text.pdf.PdfWriter; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.AcroFields; import com.lowagie.text.pdf.PdfPKCS7; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfSignatureAppearance; import com.lowagie.text.pdf.PdfStamper; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.security.KeyStore; import java.security.PrivateKey; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.Calendar; import java.util.Collection; import java.util.Iterator; public class EncryptPDF { public static void main(String[] args) throws Exception { String password="";String username=""; //.................... HashMap hm = new HashMap(); BufferedReader dataIn = new BufferedReader(new InputStreamReader( System.in) ); System.out.println("USERNAME"+":"+"PASSWORD"); hm .put("pavithra", "pvm4kor"); hm .put("shompa", "sos5kor"); hm .put("vinod", "vim2kor"); hm .put("shiva", "snk3kor"); // Get a set of the entries Set set = hm.entrySet(); // Get an iterator Iterator i = set.iterator(); //System.out.println("Please enter your protection password"); // password = dataIn.readLine(); System.out.println("Please enter your username"); username = dataIn.readLine(); // Display elements String mName; while(i.hasNext()) { Map.Entry me = (Map.Entry)i.next(); System.out.print(me.getKey() + ": "); System.out.println(me.getValue()); //cheks when username is entered with the password if (username.equals((String)me.getKey())) { password= (String)me.getValue(); System.out.println("password"+password); } //code password protect pdf if (password.equals((String)me.getValue())) { System.out.println("hello"); // mName=(String)me.getValue(); PdfReader reader = new PdfReader("ch01.pdf"); PdfStamper stamper = new PdfStamper(reader, new FileOutputStream("Encrypted1.pdf")); //stamper.setEncryption("Hello".getBytes(), password.getBytes(), PdfWriter.AllowPrinting | PdfWriter.AllowCopy, PdfWriter.STRENGTH40BITS); stamper.setEncryption(true,password, null, PdfWriter.AllowPrinting ); stamper.close(); //removed } //digitally signing pdf PdfReader reader1 = new PdfReader("Encrypted1.pdf"); int nomPage = reader1.getNumberOfPages(); System.out.println("nomPage: "+nomPage); //vvvvvvvvvvvvvvvvvvvvvvvvvvvvdigitally signing code try { 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("ch01out.pdf"); for (int j=1; j<=nomPage; j++) { FileOutputStream fout = new FileOutputStream("signed"+j+".pdf"); //PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0'); PdfStamper stp = PdfStamper.createSignature(reader1, fout, '\0', null, true); //PdfStamper.setEncryption(chain,AllowDegradedPrinting,ENCRYPTION_AES); PdfSignatureAppearance sap = stp.getSignatureAppearance(); sap.setCrypto(key, chain, null, PdfSignatureAppearance.WINCER_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), j, null); stp.close(); reader1 = new PdfReader("signed"+j+".pdf"); } for(int j=1;j<=nomPage;j++) { File fileStr = new File("signed"+j+".pdf"); if(j!=nomPage) { fileStr.delete(); } //to verify sign if(j == nomPage) { try { CertificateFactory cf = CertificateFactory.getInstance("X509"); Collection col = cf.generateCertificates(new FileInputStream("export.cer")); KeyStore kall = KeyStore.getInstance(KeyStore.getDefaultType()); kall.load(null, null); for (Iterator it = col.iterator(); it.hasNext();) { X509Certificate cert = (X509Certificate)it.next(); kall.setCertificateEntry(cert.getSerialNumber().toString(Character.MAX_RADIX), cert); } //KeyStore kall = PdfPKCS7.loadCacertsKeyStore(); PdfReader reader2 = new PdfReader("signed"+j+".pdf"); AcroFields af = reader2.getAcroFields(); ArrayList names = af.getSignatureNames(); for (int k = 0; k < names.size(); ++k) { String name = (String)names.get(k); System.out.println("Signature name: " + name); System.out.println("Signature covers whole document: " + af.signatureCoversWholeDocument(name)); System.out.println("Document revision: " + af.getRevision(name) + " of " + af.getTotalRevisions()); PdfPKCS7 pk = af.verifySignature(name); Calendar cal = pk.getSignDate(); java.security.cert.Certificate pkc[] = pk.getCertificates(); System.out.println("Subject: " + PdfPKCS7.getSubjectFields(pk.getSigningCertificate())); System.out.println("Document modified: " + !pk.verify()); Object fails[] = PdfPKCS7.verifyCertificates(pkc, kall, null, cal); if (fails == null) System.out.println("Certificates verified against the KeyStore"); else System.out.println("Certificate failed: " + fails[1]); } //for k=0 } //try catch(Exception e) {e.printStackTrace();} } //if(j == nomPage) } // for(int j=1;j<=nomPage;j++) } catch(Exception e) {e.printStackTrace();} } //if password correc }//while //....................... } //main close }//encryptpdf close

thanks in advance ...

you can make use of this command below . this requires itext.jar

CertificateFactory cf = CertificateFactory.getInstance("X509"); Collection col = cf.generateCertificates(new FileInputStream("export.cer"));

hello friend ,

i have written a java code for protecting and digitally signing . but i am giving one pdf file as input and the protected pdf as output using jpdfsecure.jar in first try catch block ....in the second try catch block digital signing of pdf using itext.jar .

but after protecting the pdf and that pretected pdf is input for digitally signing code

PdfReader reader = new PdfReader("ch01out.pdf");
int nomPage = reader.getNumberOfPages();
System.out.println("nomPage: "+nomPage);

at this time if the pdf contains 30 pages ,,,the number of pages coming is 10 pages .please could anyone help me out

import java.util.*; import com.qoppa.pdf.PDFPermissions; import com.qoppa.pdfSecure.PDFSecure; import java.lang.*; import java.security.*; import com.qoppa.pdfSecure.*; import com.qoppa.pdf.*; import java.io.*; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.security.KeyStore; import java.security.PrivateKey; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.Calendar; import java.util.Collection; import java.util.Iterator; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.AcroFields; import com.lowagie.text.pdf.PdfPKCS7; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfSignatureAppearance; import com.lowagie.text.pdf.PdfStamper; public class Non { public static void main (String [] args) { try { String password="";String username=""; //.................... HashMap hm = new HashMap(); BufferedReader dataIn = new BufferedReader(new InputStreamReader( System.in) ); System.out.println("USERNAME"+":"+"PASSWORD"); hm .put("pavithra", "pvm4kor"); hm .put("shompa", "sos5kor"); hm .put("vinod", "vim2kor"); hm .put("shiva", "snk3kor"); // Get a set of the entries Set set = hm.entrySet(); // Get an iterator Iterator i = set.iterator(); //System.out.println("Please enter your protection password"); // password = dataIn.readLine(); System.out.println("Please enter your username"); username = dataIn.readLine(); // Display elements String mName; while(i.hasNext()) { Map.Entry me = (Map.Entry)i.next(); System.out.print(me.getKey() + ": "); System.out.println(me.getValue()); //cheks when username is entered with the password if (username.equals((String)me.getKey())) { password= (String)me.getValue(); } //code password protect pdf if (password.equals((String)me.getValue())) { System.out.println("hello"); mName=(String)me.getValue(); // Load the document PDFSecure pdfSecure = new PDFSecure ("e:\\ch01.pdf", null); // Create permissions object to allow printing only PDFPermissions perms = new PDFPermissions (false); perms.setPrintAllowed(false); // Set document security pdfSecure.setSecurity(null, password, perms, null,PDFPermissions.ENCRYPTION_RC4); // break; // Check if there are open and permissions passwords System.out.println ("Open Password - " + getYesNo (pdfSecure.hasOpenPassword())); System.out.println ("Permissiosn Password - " + getYesNo(pdfSecure.hasPermissionsPassword())); System.out.println (); // Save the document pdfSecure.saveDocument ("ch01out.pdf"); PdfReader reader = new PdfReader("ch01out.pdf"); int nomPage = reader.getNumberOfPages(); System.out.println("nomPage: "+nomPage); //vvvvvvvvvvvvvvvvvvvvvvvvvvvvdigitally signing code try{ 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("ch01out.pdf"); for (int j=1; j<=nomPage; j++) { FileOutputStream fout = new FileOutputStream("signed"+j+".pdf"); //PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0'); PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0', null, true); //PdfStamper.setEncryption(chain,AllowDegradedPrinting,ENCRYPTION_AES); PdfSignatureAppearance sap = stp.getSignatureAppearance(); sap.setCrypto(key, chain, null, PdfSignatureAppearance.WINCER_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), j, null); stp.close(); reader = new PdfReader("signed"+j+".pdf"); } for(int j=1;j<=nomPage;j++) { File fileStr = new File("signed"+j+".pdf"); if(j!=nomPage) { fileStr.delete(); } //to verify sign if(j == nomPage) { try { CertificateFactory cf = CertificateFactory.getInstance("X509"); Collection col = cf.generateCertificates(new FileInputStream("export.cer")); KeyStore kall = KeyStore.getInstance(KeyStore.getDefaultType()); kall.load(null, null); for (Iterator it = col.iterator(); it.hasNext();) { X509Certificate cert = (X509Certificate)it.next(); kall.setCertificateEntry(cert.getSerialNumber().toString(Character.MAX_RADIX), cert); } //KeyStore kall = PdfPKCS7.loadCacertsKeyStore(); PdfReader reader2 = new PdfReader("signed"+j+".pdf"); AcroFields af = reader2.getAcroFields(); ArrayList names = af.getSignatureNames(); for (int k = 0; k < names.size(); ++k) { String name = (String)names.get(k); System.out.println("Signature name: " + name); System.out.println("Signature covers whole document: " + af.signatureCoversWholeDocument(name)); System.out.println("Document revision: " + af.getRevision(name) + " of " + af.getTotalRevisions()); PdfPKCS7 pk = af.verifySignature(name); Calendar cal = pk.getSignDate(); java.security.cert.Certificate pkc[] = pk.getCertificates(); System.out.println("Subject: " + PdfPKCS7.getSubjectFields(pk.getSigningCertificate())); System.out.println("Document modified: " + !pk.verify()); Object fails[] = PdfPKCS7.verifyCertificates(pkc, kall, null, cal); if (fails == null) System.out.println("Certificates verified against the KeyStore"); else System.out.println("Certificate failed: " + fails[1]); } } catch(Exception e) {e.printStackTrace();} } } } catch(Exception e) {e.printStackTrace();} //vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv } // if password correct } //while //................... } //first try close catch (Throwable t) { t.printStackTrace(); } } private static String getYesNo (boolean yes) { if (yes) {return "Yes";} else {return "No";} } }

hello friend ,

i have to write a java program or application such that for example
1. form16.pdf will be digitally signed , i have written the code for digitally signing a pdf.its working
2. i have also written java program to protect the above signed pdf ....giving input as the output of previous program (that is digitally signed pdf) .But problem here is signature is becoming invalid (and its saying document is being tampered.)

But the password is different for different employee / pdf in organisation(for that username corresponding password) . the password protected signed pdf should be sent as attachment over mail and that when the user clicks to open this pdf , It should prompt him with a password and this password should be validated against the table or storage place..and if wrong it should prompt a error message "password entered is wrong "

but i am not supposed to use any Database as such. Please could you provide me some inputs on this requirement