ritesh_java

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Recent posts by ritesh_java

Hi ALL:

I am working in JCE ..And I need some expertise help.
The problem is I am unable to encrypt(gif's)/decrypt all the files that I have encrypted.
I hope you can provide me technical help as to why I am unable to encrypt the GIF's and decrypt all the files.

Kindly email me at ritesh_swd@suvistas.com
Thanking you.
Regards
R.Ritesh
SUVISTAS SOFTWARE PVT LTD
HYDERABAD
INDIA
Encls:Source Code>>>>>>>>>>>>>>>>>>>>>>>.>>
import javax.crypto.*;
import java.security.*;
import java.math.*;
import java.security.spec.*;
import javax.crypto.spec.*;
import com.sun.crypto.provider.*;
import java.io.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class Cipher2_TextFile extends Frame implements ActionListener,Serializable
{
//Declare the Providers
static SunJCE jce;
//Declare the Ciphers
Cipher cenc1;
Cipher cenc2;
Cipher cext;

//InputStreams Declarations
FileInputStream fis;
FileInputStream fis1;
OutputStreamWriter fos;
FileOutputStream fos1;//OutputStreamWriter fos1;
FileDialog fdlog;
String filename="";
CipherInputStream cis1;
CipherInputStream cis2;
// Salt
byte[] salt = {
(byte)0xc7, (byte)0x73, (byte)0x21, (byte)0x8c,
(byte)0x7e, (byte)0xc8, (byte)0xee, (byte)0x99
};
// Iteration count
int count = 20;
//Declare the Random Variables and the Retrieval of Seed from the User
String _pwd_seed="";//lblPasswordSeed.getText();
SecretKeySpec secretKey;
PBEParameterSpec pbeParamSpec;
PBEKeySpec pbeKeySpec;
byte[] pwd_seed;
//Secret Key for Extension Object
//Declarations for initial seed for Extension
private byte[] desKeyData = { (byte)0x01, (byte)0x02,(byte)0x03,(byte)0x04,(byte)0x05,(byte)0x06,(byte)0x07,(byte)0x08,(byte)0x09,
(byte)0x0A, (byte)0x0B,(byte)0x0C,(byte)0x0D,(byte)0x0E,(byte)0x0F,(byte)0x10,(byte)0x11,(byte)0x12
};
SecretKey pbeKey_ext;
//Define the Components and the Layout
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
Label lblEncryption = new Label();
Label lblChooseFile = new Label();
Label lblPassword=new Label();
Label lblSpace1 = new Label();
Label lblSpace2 = new Label();
Label lblSpace3 = new Label();
Label lblSpace4 = new Label();
Label lblSpace5 = new Label();
Label lblSpace6 = new Label();
Label lblSpace7 = new Label();
Label lblStatus = new Label();
Label lblMsgs = new Label();
Label lblDrive=new Label();
Button btnBrowse = new Button("Browse");
//Generate the Key,Store the key and Write the key to a *.ENC file
Button btnEncrypt = new Button("Encrypt");
Button btnDecrypt = new Button("Decrypt");
//Button btnGenKey = new Button("Generate-Key");
TextField txtFilename = new TextField(25);
TextField txtPasswordSeed=new TextField(10);
TextField txtDrive=new TextField(25);
protected String gMessage = " ";
//A Dialog Frame is opened
FileDialog dlgOpen;
File file;
//Define the Encrypt class And Decrypt class
Cip_TextFile cip;
Dec_TextFile dec;
//Declare the Sealed Object
SealedObject so;
//A Static Initializer to Load the Cryptographic Service Provider
static
{
try{
// Add JCE to the list of providers
jce = new SunJCE();
Security.addProvider(jce);
}
catch(Exception e){}
}
static AccessControlContext acc;
//Static initializer to LOAD the SYSTEMS FILEs
static
{
try
{
//if (Class.forName("java.security.AccessControlContext") != null)
//{
//PolicyEngine.assertPermission(PermissionID.SYSTEM);
//}
if (Class.forName("java.security.AccessControlContext") != null)
{
acc = AccessController.getContext();
AllPermission per=new AllPermission();
acc.checkPermission(per);
}
/* grant my application AllPermission */
/*grant{
permission java.security.FilePermission "*";
};*/
}catch (Exception cnfe) {}
}

Cipher2_TextFile()
{
//Set the Layout
setLayout(gridbag);
lblEncryption.setText("Encryption/Decryption");
lblEncryption.setFont(new Font("Verdana",1,20));
lblChooseFile.setText("Choose File ");
lblPassword.setText("Enter Password ");
lblStatus.setText("STATUS");
lblDrive.setText("Enter the drive");
lblMsgs.setText("Select a File to Encrypt/Decrypt");
//ENcryption row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblEncryption,c);
add(lblEncryption);
//Two Space rows
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace1,c);
add(lblSpace1);
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace2,c);
add(lblSpace2);
//End of Space Rows
//Browse Row
c.gridwidth=1;
c.weightx = 0.0;
c.anchor = GridBagConstraints.WEST;
gridbag.setConstraints(lblChooseFile,c);
add(lblChooseFile);
c.weightx = 1.0;
c.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(txtFilename,c);
add(txtFilename);
c.weightx=0.0;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(btnBrowse,c);
add(btnBrowse);
// End of Browse Row
//Space Row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace6,c);
add(lblSpace6);
//End of Space Row
//Password Row
c.gridwidth=1;
c.weightx = 0.0;
c.anchor = GridBagConstraints.WEST;
gridbag.setConstraints(lblPassword,c);
add(lblPassword);
c.weightx = 1.0;
c.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(txtPasswordSeed,c);
char echo='*';
txtPasswordSeed.setEchoChar(echo);
add(txtPasswordSeed);
// End of password Row
//Space Row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace7,c);
add(lblSpace7);
//End of Space Row
//Extension Row
c.gridwidth=1;
c.weightx = 0.0;
c.anchor = GridBagConstraints.WEST;
gridbag.setConstraints(lblDrive,c);
add(lblDrive);
c.weightx = 1.0;
c.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(txtDrive,c);
add(txtDrive);
//End of Extension Row
//Space Row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace4,c);
add(lblSpace4);
//End of Space Row
//Encrypt Row
c.gridwidth = 1;
c.weightx = 2.0;
gridbag.setConstraints(lblSpace3,c);
add(lblSpace3);
c.weightx = 0.0;
c.insets = new Insets(0,110,0,0);
c.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(btnEncrypt,c);
add(btnEncrypt);
c.weightx = 0.0;
c.insets = new Insets(0,0,0,0);
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(btnDecrypt,c);
add(btnDecrypt);
//End of Cancel Row
//Space Row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace5,c);
add(lblSpace5);
//End of Space Row
//Status Row
c.anchor = GridBagConstraints.WEST;
c.gridwidth = 1;
c.weightx = 0.0;
gridbag.setConstraints(lblStatus,c);
add(lblStatus);
c.gridwidth = GridBagConstraints.REMAINDER;
c.weightx = 1.0;
gridbag.setConstraints(lblMsgs,c);
add(lblMsgs);
btnBrowse.addActionListener(this);
btnEncrypt.addActionListener(this);
btnDecrypt.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{
//The BROWSE FUNCTION SEARCHES FOR THE FILESYSTEM FILES
if(e.getSource()==btnBrowse)
{
try
{
// create frame for file dialog
fdlog = new FileDialog(this,"Open",FileDialog.LOAD);
// bring the still invisible frame to the front, then show it
fdlog.toFront();
fdlog.show();
// capture both path and file selected by user; assemble into one file pathname
filename = fdlog.getDirectory() + fdlog.getFile();
//Check File
file = new File(filename);
}catch(Exception e4){}
try
{
txtFilename.setText(filename);
}catch(Exception e3){}
lblMsgs.setText(filename);
}
if(e.getSource()==btnEncrypt)
{
try
{
cip=new Cip_TextFile();
}
catch(Exception e2){}
}
if(e.getSource()==btnDecrypt)
{
try
{
dec=new Dec_TextFile();
}
catch(Exception e10)
{
System.out.println(e10);
}
}
}
public static void main(String args[])
{
Cipher2_TextFile ciph=new Cipher2_TextFile();
ciph.setSize(500,500);
ciph.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){System.exit(0);}
}
);
ciph.setVisible(true);
}
//Opens a File
//Begin the Class-Cipher_2_TextFile
private class Cip_TextFile
{
Cip_TextFile()
{
try
{
btnDecrypt.setEnabled(false);//The Decrypt is disabled
txtDrive.setEnabled(true);
//Development of a Cryptographically-safe PRNG
//lblMsgs.setText("The New Key ....");

//Encrypt the File
String finfilename = "";//for final Filename extracted from absolute path
String fi_filename="";//for the process of getting actual file name
String infilename = txtFilename.getText();//This is the actual file with absolte path given by user
//lblMsgs.setText("Encryptiing File ........");
//Generate the Key
_pwd_seed=txtPasswordSeed.getText();
char[] lineBuffer=_pwd_seed.toCharArray();
char[] ret=new char[_pwd_seed.length()];
System.arraycopy(lineBuffer, 0, ret, 0, _pwd_seed.length());
Arrays.fill(lineBuffer, ' ');
lblMsgs.setText("Key is copied ....");
lblMsgs.setText("Encryptiing File ........");
// Create PBE parameter set
pbeParamSpec = new PBEParameterSpec(salt,count);
pbeKeySpec = new PBEKeySpec(ret);
lblMsgs.setText("The Key Parameter is set ....");
//SecretkeyFactory Init
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
System.out.println("The Key is finally generated ........");
lblMsgs.setText("The Key is finally generated ........");
//StringTokenizer for infile to get actual file name from absolute path
StringTokenizer stzinFile=new StringTokenizer(infilename,"\\");
while(stzinFile.hasMoreTokens()){
fi_filename = stzinFile.nextToken();
}
StringTokenizer stzinFile1=new StringTokenizer(fi_filename,".");
finfilename = stzinFile1.nextToken();
//Read the Extension of the Input FILE
String extRetrieve="";
StringTokenizer stzRFile1=new StringTokenizer(fi_filename,".");
while(stzRFile1.hasMoreTokens()){
extRetrieve = stzRFile1.nextToken();
}
System.out.println(extRetrieve);
//Encrypt the Extension.Initialise the Cipher for the extension
//Get a Seperate KEY for Extension
DESKeySpec desKeySpec = new DESKeySpec(desKeyData);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
pbeKey_ext = keyFactory.generateSecret(desKeySpec);
cext=Cipher.getInstance("DES");
cext.init(Cipher.ENCRYPT_MODE,pbeKey_ext);
so = new SealedObject(extRetrieve,cext);
String outFilename ="";
outFilename="C:"+"\\"+finfilename+".enc";
System.out.println("The Key is finally generated ........");
lblMsgs.setText("Encryptiing FILE ........");
//Initialize the Cipher
cenc1=Cipher.getInstance("PBEWithMD5AndDES");
lblMsgs.setText("Initialising CIpher");
cenc1.init(Cipher.ENCRYPT_MODE,pbeKey,pbeParamSpec);
lblMsgs.setText("Initialised the CIpher");
//Read a InputStream
//Start writihng using OutputSTreams
fis=new FileInputStream(infilename);
cis1 = new CipherInputStream(fis, cenc1);
fos=new OutputStreamWriter(new FileOutputStream(outFilename));
InputStreamReader inp=new InputStreamReader(cis1);
BufferedWriter bugwrite=new BufferedWriter(fos);
char[] buf = new char[1024];
int len;
while ((len = inp.read(buf)) > 0) {
bugwrite.write(buf,0,len);
}

fis.close();
fos.close();
lblMsgs.setText("Encrypted file"+outFilename);
txtFilename.setText("");
btnDecrypt.setEnabled(true);//The Decrypt is disabled
txtDrive.setEnabled(true);
//btnEncrypt.setEnabled(false);//Now set the Encrypt disabled
txtPasswordSeed.setText("");
}catch(Exception e8)
{
lblMsgs.setText("There is a error");
System.err.print("The error is "+e8);
e8.printStackTrace();
}
//txtFilename.setText("");
}
}//End of Encrypt class
//Start of Decrypt class
private class Dec_TextFile
{
Dec_TextFile()
{
try
{
btnEncrypt.setEnabled(false);//The Encrypt is disabled
txtDrive.setEnabled(false);
lblMsgs.setText("Browse file to Decrypt...");
String decfilename = "";//for final Filename extracted from absolute path
String dec_filename="";//for the process of getting actual file name
String defilename = txtFilename.getText();//This is the actual file with absolte path given by user
//Retrieve and Store the seed
String de_seed=txtPasswordSeed.getText();
char[] deBuffer=de_seed.toCharArray();
//The Key is recollected here.Create PBE parameter set
//pbeParamSpec = new PBEParameterSpec(salt, count);
pbeKeySpec = new PBEKeySpec(deBuffer);
//SecretkeyFactory Init
SecretKeyFactory dkeyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
SecretKey dpbeKey = dkeyFac.generateSecret(pbeKeySpec);
//Initialize the Cipher again..TO UNSEAL THE EXTENSION OBJECT
cext.init(Cipher.DECRYPT_MODE,pbeKey_ext);
String ext1_de =(String)so.getObject(cext);
String Folder_Drive=txtDrive.getText();
String de_Filename ="";
de_Filename=Folder_Drive+"."+ext1_de;
lblMsgs.setText("Decryptiing File ........");
//Define the Cipher Class
cenc2=Cipher.getInstance("PBEWithMD5AndDES");
//Initialize the Cipher for Decryption
cenc2.init(Cipher.DECRYPT_MODE,dpbeKey,pbeParamSpec);
//Read the ENC file
fis1=new FileInputStream(defilename);
cis2 = new CipherInputStream(fis1,cenc2);
//Writing the content-encrypted to a new file(*.*)
/*fos1=new OutputStreamWriter(new FileOutputStream(de_Filename));
InputStreamReader dep=new InputStreamReader(cis2);
BufferedWriter de_write=new BufferedWriter(fos1);
lblMsgs.setText(de_Filename);
char[] buf = new char[1024];
int len;
while ((len = dep.read(buf)) > 0) {
de_write.write(buf,0,len);
}*/
fos1=new FileOutputStream(de_Filename);
byte[] debuf = new byte[1024];
int delen;
while ((delen = cis2.read(debuf)) > 0) {
fos1.write(debuf, 0, delen);
}
lblMsgs.setText("File Decrypted...");
//fis1.close();
//fos1.close();
lblMsgs.setText("The file is decrypted"+de_Filename);
btnDecrypt.setEnabled(false);//The Encrypt is disabled
btnEncrypt.setEnabled(true);//The Encrypt is disabled
//Set the Appliaction back to normal
btnDecrypt.setEnabled(true);
txtFilename.setText("");
txtPasswordSeed.setText("");
txtDrive.setText("");
lblMsgs.setText("Select file to Encrypt/Decrypt..");
}
catch(Exception e11)
{
System.out.println("The error is"+e11);
//e11.printStackTrace();
e11.printStackTrace();
}
}
}
//End of Decrypt class
}
------------------
19 years ago
Dear Friends:
I am working in Cryptography since quite some time.I need some expertise help.Kindly find enclosed my source code.
The problem is I am unable to encrypt(gif's)/decrypt all the files that I have encrypted.
I hope you can provide me technical help as to why I am unable to encrypt the GIF's and decrypt all the files.

Kindly email me at ritesh_swd@suvistas.com
Thanking you.
Regards
R.Ritesh
SUVISTAS SOFTWARE PVT LTD
HYDERABAD
INDIA
Encls:Source Code>>>>>>>>>>>>>>>>>>>>>>>.>>
import javax.crypto.*;
import java.security.*;
import java.math.*;
import java.security.spec.*;
import javax.crypto.spec.*;
import com.sun.crypto.provider.*;
import java.io.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class Cipher2_TextFile extends Frame implements ActionListener,Serializable
{
//Declare the Providers
static SunJCE jce;
//Declare the Ciphers
Cipher cenc1;
Cipher cenc2;
Cipher cext;

//InputStreams Declarations
FileInputStream fis;
FileInputStream fis1;
OutputStreamWriter fos;
FileOutputStream fos1;//OutputStreamWriter fos1;
FileDialog fdlog;
String filename="";
CipherInputStream cis1;
CipherInputStream cis2;
// Salt
byte[] salt = {
(byte)0xc7, (byte)0x73, (byte)0x21, (byte)0x8c,
(byte)0x7e, (byte)0xc8, (byte)0xee, (byte)0x99
};
// Iteration count
int count = 20;
//Declare the Random Variables and the Retrieval of Seed from the User
String _pwd_seed="";//lblPasswordSeed.getText();
SecretKeySpec secretKey;
PBEParameterSpec pbeParamSpec;
PBEKeySpec pbeKeySpec;
byte[] pwd_seed;
//Secret Key for Extension Object
//Declarations for initial seed for Extension
private byte[] desKeyData = { (byte)0x01, (byte)0x02,(byte)0x03,(byte)0x04,(byte)0x05,(byte)0x06,(byte)0x07,(byte)0x08,(byte)0x09,
(byte)0x0A, (byte)0x0B,(byte)0x0C,(byte)0x0D,(byte)0x0E,(byte)0x0F,(byte)0x10,(byte)0x11,(byte)0x12
};
SecretKey pbeKey_ext;
//Define the Components and the Layout
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
Label lblEncryption = new Label();
Label lblChooseFile = new Label();
Label lblPassword=new Label();
Label lblSpace1 = new Label();
Label lblSpace2 = new Label();
Label lblSpace3 = new Label();
Label lblSpace4 = new Label();
Label lblSpace5 = new Label();
Label lblSpace6 = new Label();
Label lblSpace7 = new Label();
Label lblStatus = new Label();
Label lblMsgs = new Label();
Label lblDrive=new Label();
Button btnBrowse = new Button("Browse");
//Generate the Key,Store the key and Write the key to a *.ENC file
Button btnEncrypt = new Button("Encrypt");
Button btnDecrypt = new Button("Decrypt");
//Button btnGenKey = new Button("Generate-Key");
TextField txtFilename = new TextField(25);
TextField txtPasswordSeed=new TextField(10);
TextField txtDrive=new TextField(25);
protected String gMessage = " ";
//A Dialog Frame is opened
FileDialog dlgOpen;
File file;
//Define the Encrypt class And Decrypt class
Cip_TextFile cip;
Dec_TextFile dec;
//Declare the Sealed Object
SealedObject so;
//A Static Initializer to Load the Cryptographic Service Provider
static
{
try{
// Add JCE to the list of providers
jce = new SunJCE();
Security.addProvider(jce);
}
catch(Exception e){}
}
static AccessControlContext acc;
//Static initializer to LOAD the SYSTEMS FILEs
static
{
try
{
//if (Class.forName("java.security.AccessControlContext") != null)
//{
//PolicyEngine.assertPermission(PermissionID.SYSTEM);
//}
if (Class.forName("java.security.AccessControlContext") != null)
{
acc = AccessController.getContext();
AllPermission per=new AllPermission();
acc.checkPermission(per);
}
/* grant my application AllPermission */
/*grant{
permission java.security.FilePermission "*";
};*/
}catch (Exception cnfe) {}
}

Cipher2_TextFile()
{
//Set the Layout
setLayout(gridbag);
lblEncryption.setText("Encryption/Decryption");
lblEncryption.setFont(new Font("Verdana",1,20));
lblChooseFile.setText("Choose File ");
lblPassword.setText("Enter Password ");
lblStatus.setText("STATUS");
lblDrive.setText("Enter the drive");
lblMsgs.setText("Select a File to Encrypt/Decrypt");
//ENcryption row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblEncryption,c);
add(lblEncryption);
//Two Space rows
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace1,c);
add(lblSpace1);
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace2,c);
add(lblSpace2);
//End of Space Rows
//Browse Row
c.gridwidth=1;
c.weightx = 0.0;
c.anchor = GridBagConstraints.WEST;
gridbag.setConstraints(lblChooseFile,c);
add(lblChooseFile);
c.weightx = 1.0;
c.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(txtFilename,c);
add(txtFilename);
c.weightx=0.0;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(btnBrowse,c);
add(btnBrowse);
// End of Browse Row
//Space Row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace6,c);
add(lblSpace6);
//End of Space Row
//Password Row
c.gridwidth=1;
c.weightx = 0.0;
c.anchor = GridBagConstraints.WEST;
gridbag.setConstraints(lblPassword,c);
add(lblPassword);
c.weightx = 1.0;
c.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(txtPasswordSeed,c);
char echo='*';
txtPasswordSeed.setEchoChar(echo);
add(txtPasswordSeed);
// End of password Row
//Space Row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace7,c);
add(lblSpace7);
//End of Space Row
//Extension Row
c.gridwidth=1;
c.weightx = 0.0;
c.anchor = GridBagConstraints.WEST;
gridbag.setConstraints(lblDrive,c);
add(lblDrive);
c.weightx = 1.0;
c.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(txtDrive,c);
add(txtDrive);
//End of Extension Row
//Space Row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace4,c);
add(lblSpace4);
//End of Space Row
//Encrypt Row
c.gridwidth = 1;
c.weightx = 2.0;
gridbag.setConstraints(lblSpace3,c);
add(lblSpace3);
c.weightx = 0.0;
c.insets = new Insets(0,110,0,0);
c.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(btnEncrypt,c);
add(btnEncrypt);
c.weightx = 0.0;
c.insets = new Insets(0,0,0,0);
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(btnDecrypt,c);
add(btnDecrypt);
//End of Cancel Row
//Space Row
c.anchor = GridBagConstraints.CENTER;
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(lblSpace5,c);
add(lblSpace5);
//End of Space Row
//Status Row
c.anchor = GridBagConstraints.WEST;
c.gridwidth = 1;
c.weightx = 0.0;
gridbag.setConstraints(lblStatus,c);
add(lblStatus);
c.gridwidth = GridBagConstraints.REMAINDER;
c.weightx = 1.0;
gridbag.setConstraints(lblMsgs,c);
add(lblMsgs);
btnBrowse.addActionListener(this);
btnEncrypt.addActionListener(this);
btnDecrypt.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{
//The BROWSE FUNCTION SEARCHES FOR THE FILESYSTEM FILES
if(e.getSource()==btnBrowse)
{
try
{
// create frame for file dialog
fdlog = new FileDialog(this,"Open",FileDialog.LOAD);
// bring the still invisible frame to the front, then show it
fdlog.toFront();
fdlog.show();
// capture both path and file selected by user; assemble into one file pathname
filename = fdlog.getDirectory() + fdlog.getFile();
//Check File
file = new File(filename);
}catch(Exception e4){}
try
{
txtFilename.setText(filename);
}catch(Exception e3){}
lblMsgs.setText(filename);
}
if(e.getSource()==btnEncrypt)
{
try
{
cip=new Cip_TextFile();
}
catch(Exception e2){}
}
if(e.getSource()==btnDecrypt)
{
try
{
dec=new Dec_TextFile();
}
catch(Exception e10)
{
System.out.println(e10);
}
}
}
public static void main(String args[])
{
Cipher2_TextFile ciph=new Cipher2_TextFile();
ciph.setSize(500,500);
ciph.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){System.exit(0);}
}
);
ciph.setVisible(true);
}
//Opens a File
//Begin the Class-Cipher_2_TextFile
private class Cip_TextFile
{
Cip_TextFile()
{
try
{
btnDecrypt.setEnabled(false);//The Decrypt is disabled
txtDrive.setEnabled(true);
//Development of a Cryptographically-safe PRNG
//lblMsgs.setText("The New Key ....");

//Encrypt the File
String finfilename = "";//for final Filename extracted from absolute path
String fi_filename="";//for the process of getting actual file name
String infilename = txtFilename.getText();//This is the actual file with absolte path given by user
//lblMsgs.setText("Encryptiing File ........");
//Generate the Key
_pwd_seed=txtPasswordSeed.getText();
char[] lineBuffer=_pwd_seed.toCharArray();
char[] ret=new char[_pwd_seed.length()];
System.arraycopy(lineBuffer, 0, ret, 0, _pwd_seed.length());
Arrays.fill(lineBuffer, ' ');
lblMsgs.setText("Key is copied ....");
lblMsgs.setText("Encryptiing File ........");
// Create PBE parameter set
pbeParamSpec = new PBEParameterSpec(salt,count);
pbeKeySpec = new PBEKeySpec(ret);
lblMsgs.setText("The Key Parameter is set ....");
//SecretkeyFactory Init
SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
System.out.println("The Key is finally generated ........");
lblMsgs.setText("The Key is finally generated ........");
//StringTokenizer for infile to get actual file name from absolute path
StringTokenizer stzinFile=new StringTokenizer(infilename,"\\");
while(stzinFile.hasMoreTokens()){
fi_filename = stzinFile.nextToken();
}
StringTokenizer stzinFile1=new StringTokenizer(fi_filename,".");
finfilename = stzinFile1.nextToken();
//Read the Extension of the Input FILE
String extRetrieve="";
StringTokenizer stzRFile1=new StringTokenizer(fi_filename,".");
while(stzRFile1.hasMoreTokens()){
extRetrieve = stzRFile1.nextToken();
}
System.out.println(extRetrieve);
//Encrypt the Extension.Initialise the Cipher for the extension
//Get a Seperate KEY for Extension
DESKeySpec desKeySpec = new DESKeySpec(desKeyData);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
pbeKey_ext = keyFactory.generateSecret(desKeySpec);
cext=Cipher.getInstance("DES");
cext.init(Cipher.ENCRYPT_MODE,pbeKey_ext);
so = new SealedObject(extRetrieve,cext);
String outFilename ="";
outFilename="C:"+"\\"+finfilename+".enc";
System.out.println("The Key is finally generated ........");
lblMsgs.setText("Encryptiing FILE ........");
//Initialize the Cipher
cenc1=Cipher.getInstance("PBEWithMD5AndDES");
lblMsgs.setText("Initialising CIpher");
cenc1.init(Cipher.ENCRYPT_MODE,pbeKey,pbeParamSpec);
lblMsgs.setText("Initialised the CIpher");
//Read a InputStream
//Start writihng using OutputSTreams
fis=new FileInputStream(infilename);
cis1 = new CipherInputStream(fis, cenc1);
fos=new OutputStreamWriter(new FileOutputStream(outFilename));
InputStreamReader inp=new InputStreamReader(cis1);
BufferedWriter bugwrite=new BufferedWriter(fos);
char[] buf = new char[1024];
int len;
while ((len = inp.read(buf)) > 0) {
bugwrite.write(buf,0,len);
}

fis.close();
fos.close();
lblMsgs.setText("Encrypted file"+outFilename);
txtFilename.setText("");
btnDecrypt.setEnabled(true);//The Decrypt is disabled
txtDrive.setEnabled(true);
//btnEncrypt.setEnabled(false);//Now set the Encrypt disabled
txtPasswordSeed.setText("");
}catch(Exception e8)
{
lblMsgs.setText("There is a error");
System.err.print("The error is "+e8);
e8.printStackTrace();
}
//txtFilename.setText("");
}
}//End of Encrypt class
//Start of Decrypt class
private class Dec_TextFile
{
Dec_TextFile()
{
try
{
btnEncrypt.setEnabled(false);//The Encrypt is disabled
txtDrive.setEnabled(false);
lblMsgs.setText("Browse file to Decrypt...");
String decfilename = "";//for final Filename extracted from absolute path
String dec_filename="";//for the process of getting actual file name
String defilename = txtFilename.getText();//This is the actual file with absolte path given by user
//Retrieve and Store the seed
String de_seed=txtPasswordSeed.getText();
char[] deBuffer=de_seed.toCharArray();
//The Key is recollected here.Create PBE parameter set
//pbeParamSpec = new PBEParameterSpec(salt, count);
pbeKeySpec = new PBEKeySpec(deBuffer);
//SecretkeyFactory Init
SecretKeyFactory dkeyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
SecretKey dpbeKey = dkeyFac.generateSecret(pbeKeySpec);
//Initialize the Cipher again..TO UNSEAL THE EXTENSION OBJECT
cext.init(Cipher.DECRYPT_MODE,pbeKey_ext);
String ext1_de =(String)so.getObject(cext);
String Folder_Drive=txtDrive.getText();
String de_Filename ="";
de_Filename=Folder_Drive+"."+ext1_de;
lblMsgs.setText("Decryptiing File ........");
//Define the Cipher Class
cenc2=Cipher.getInstance("PBEWithMD5AndDES");
//Initialize the Cipher for Decryption
cenc2.init(Cipher.DECRYPT_MODE,dpbeKey,pbeParamSpec);
//Read the ENC file
fis1=new FileInputStream(defilename);
cis2 = new CipherInputStream(fis1,cenc2);
//Writing the content-encrypted to a new file(*.*)
/*fos1=new OutputStreamWriter(new FileOutputStream(de_Filename));
InputStreamReader dep=new InputStreamReader(cis2);
BufferedWriter de_write=new BufferedWriter(fos1);
lblMsgs.setText(de_Filename);
char[] buf = new char[1024];
int len;
while ((len = dep.read(buf)) > 0) {
de_write.write(buf,0,len);
}*/
fos1=new FileOutputStream(de_Filename);
byte[] debuf = new byte[1024];
int delen;
while ((delen = cis2.read(debuf)) > 0) {
fos1.write(debuf, 0, delen);
}
lblMsgs.setText("File Decrypted...");
//fis1.close();
//fos1.close();
lblMsgs.setText("The file is decrypted"+de_Filename);
btnDecrypt.setEnabled(false);//The Encrypt is disabled
btnEncrypt.setEnabled(true);//The Encrypt is disabled
//Set the Appliaction back to normal
btnDecrypt.setEnabled(true);
txtFilename.setText("");
txtPasswordSeed.setText("");
txtDrive.setText("");
lblMsgs.setText("Select file to Encrypt/Decrypt..");
}
catch(Exception e11)
{
System.out.println("The error is"+e11);
//e11.printStackTrace();
e11.printStackTrace();
}
}
}
//End of Decrypt class
}




------------------
19 years ago
Hi ALL:
I am working on JCE and have developed a APPLET which would interact with the local file system to get the file and encrypt the file using DES.
I am getting this error while running in the appletviewer.
----------------
java.security.AccessControlException:access denied(java.io.FilePermission <<filename>> )
----------------
I would like to know why this error is occurring.
Suggest me possible ideas for solving this problem.
Regards
Ritesh
19 years ago
Hi ALL:

I have developed a signed applet which works fine.Now i am using this applet embedded in HTML to upload a zip file to a ASP.Can anyone help me with code as how to communicate with a Signed Applet (for uploading ZIP file) to a ASP.

Thanks in advance
Regards
Ritesh
------------------
19 years ago
Hi:
I have developed a signed applet and wish to upload a file from the local filesysteem to a ASP.Can you help me in the development of the ASP with code.
Thanks in advance.
Regards
Ritesh

Originally posted by Ulrika Bramer:
Hi!
I was asked to do a signed applet that upload files from a client to a server. I have the tools to sign the applet but since I�m new to the java.net class I was wondering if anyone have some code-examples for this matter.
I would be so grateful....



------------------
19 years ago
Hi Friends:
I am a Java Developer working on a small module of a project at present.I have developed a signed applet for IE only.Now I am using this applet to upload my local file(zip format) to my ASP page...

Can anyone here help me in the same on both cleint and server side.
Thanks in advance.
Regards
Ritesh
------------------
19 years ago
Hi Friends:

I am now at present working in Signed Applets.Everything works fine till the final sage ,but at the stage of uploading my local zip file to the Server Side Script,i.e. ASP,I am facing a SubScript Error....
I want soem of my friends here to help me sort this problem.I guess many here know that the Microsoft's ASP has a SmartUplaod Component.I am using the same.So now someone please help me rectify the Error.
Thanks in advance
Regards
Ritesh
19 years ago