How To Represent Message For Elgamal Elliptic Curve In Java

May 3, 2014

I am working on my project that uses elgamal elliptic curve. I know when the elgamal ec encrypt by following steps

Represent the message m as a point M in E(Fp).
Select k ∈R [1,n−1].
Compute C1 = kP.
Compute C2 = M +kQ.
Return(C1,C2).

Where Q is the intended recipient’s public key, P is base point. My qusetion at number one.How represent m as a point. Is point represent one character or represent group of characters. also I need code by java done this issue like Koblitz Encoding Method for ECC

View Replies


ADVERTISEMENT

Graph In Java - How To Draw Curve

Apr 8, 2014

If I have a function for example y=x^2

How can I draw the curve?

View Replies View Related

JavaFX 2.0 :: Rendering Text Along A Curve

Nov 8, 2014

I'm currently working on a project which requires to have text displayed along a curve. If found this entry a good starting point. It works fine for me on my develompment machine, however the customer on his machine noticed some issues.

The basic idea is to define a path for the text, explode the text into the separate characters and animate them along the path the fraction of the character of the whole lenght. So with a animation duration of 10 seconds and a label of ten characters, the first character would be animated along 1 second, the second 2, and so forth.

This is done by jumping to the designated time in the animation, start the animation and stop it immediately.

Now the problem as I see it, for stopping the animation a separate timer is used, so it can happen that at the time the animation is actually stopped, the animation moved further than the first frame. The effect is that the last characters of the text appear in front (wrapped around).

As I have no evidence to prove or disprove my theory, what do you think is this plausable? I can see a workaround for this issue by defining a path for each character and then let the animation run to the end. While I can set the duration of the animation to 1 ms which should not be visible to the human eye, I'm not able to make the characters invisible and turn the visiblity on when the animation finishes, they always become visible at the start.

Or create my own animation/transition for placing the characters.

View Replies View Related

How To Make Curve Motion With Ball Object

Jun 25, 2013

I want to make a simply game,actualy not a game but I want to moving object curve just like angry bird. Where I can move an object with curve motion. But I don't know how. I just can make it move straight(left,right,down,up).

View Replies View Related

Result Of Encoded Message Cannot Restore To Original Message By Decoder

Sep 28, 2014

The problem is the result of encoded message can't not restore to the original message by the decoder. Here are my three class's code

SecureMsgMain:

package securemsg.core;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;
 import securemsg.database.*;
 public class SecureMsgMain {
 
[Code] .....

View Replies View Related

Java Error Message With WordPress Plugin

May 30, 2014

I am trying to uncover why I am getting an error message when trying to view a panoramic photo on my wordpress website.We are using the PTviewer plugin.This is the error message when you load the page: URL....I recently took over as webmaster for this site am not sure how the previous developer decided to set this up.Here is the raw code:

<div style='padding: 15px'><h2 style='font-size: 13pt; color: #DB592D; margin-left: 5px; margin-bottom: 5px; font-family: georgia;'>Spacious One & Two Bedroom Suites</h2><p style="">Stay & Play at Pacific Plaza and your stay will be filled with fun, excitement in a relaxing beach atmosphere.<p style="">Choose from our spacious one bedroom and two bedroom suites.

[code]....

View Replies View Related

Creating Java Based Message Board?

Jan 4, 2015

I'm trying to create java based fairly simple forum.

The task is as following:-

• each user may post exactly one research topic;

• each each may see all research topics posted by other users;

• each each may read all messages contributed by all users on a particular research topic;

• each user may post a new message to contribute to the discussion on any of the topics posted.

Something like below:-

User topic: Intrusion Detection Systems
Posted by: John
[22/10/11 14:00] John wrote I am building a new IDS based
on neural networks. …………….Comments ………….?
[22/10/11 14:12] Kate wrote there could be too many false positives!

View Replies View Related

Delete Message From A Sender In Gmail Using Java

Oct 23, 2014

i want to log in to my gmail account, filter spam and delete them.But i want to delete only spam from a particular sender,How can i delete all messages from this sender only?The code i found is here but it.s not deleting any messages:

Java Code: import java.util.Properties;
import javax.mail.Address;

import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import javax.mail.Store;

[code]....

View Replies View Related

JavaFX 2.0 :: How Can A Message (JOptionPane In Java) Is Displayed

Aug 17, 2014

In javaFX 2.0 how can a message (i.e. JOptionPane in java) is displayed? Example code.

View Replies View Related

Java Socket - How To Set Value Jtext Field When Client Send Message

Apr 26, 2014

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class M_serverApp extends javax.swing.JFrame implements Runnable {

[Code] ....

View Replies View Related

Java Program Which Would Display A Message Dialog Box Stopped Working

Mar 16, 2014

I have a java program which would display a message dialog box. The problem is it would stopped working before even displaying the message dialog box. This is my code.

import javax.swing.JOptionPane;
public class HelloDialog {
public static void main(String [] args) {
JOptionPane.showMessageDialog(null, "Hello World!");
}
}

There is a pop-up window which would say "Java(TM) Platform SE binary has stopped working." I am using textpad. What should I do with this?

View Replies View Related

Java Socket - How To Update JTextField When Client Send Message

Apr 26, 2014

Server:

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class M_serverApp extends javax.swing.JFrame implements Runnable {
ServerSocket server = null;

[Code]...

View Replies View Related

Each Bar In Graph Will Represent Value Of Each Element Of Array

Nov 5, 2014

So I have an array which holds 19 elements, each element represents a value of 'income'. I'm trying to code the graph so that each bar will represent the value of each element of the array (income). I have been given the code ' for (int Bar = 0; Bar < array of values.length; bar++);' however i'm unsure if this is how to do it, or what to add to this code to make it work.

View Replies View Related

How To Split And Then Represent Splitted Sentence

Apr 12, 2015

how to split and then represent the splitted sentence.Suppose I have:

Java Code:

String sentence = "I Love my mother <=> I Love my father";
String[] array = sentence.split("->"); mh_sh_highlight_all('java');

But how can I get now the lefthandside String values which is "I love my mother" and righthandside "I love my father"? I tried smth like:

Java Code:

String[] leftHandSide = array[0].split(" ");
String[] rightHandSide = array[1].split(" "); mh_sh_highlight_all('java');

But it's not working - getting error.

View Replies View Related

Design A Class To Represent A Rectangle

Jan 8, 2015

I was told to design a class named Rectangle to represent a rectangle.The class contains:

■ Two double data fields named width and height that specify the width and height of the rectangle. The default values are 1 for both width and height.
■ A no-arg constructor that creates a default rectangle.
■ A constructor that creates a rectangle with the specified width and height.
■ A method named getArea() that returns the area of this rectangle.
■ A method named getPerimeter() that returns the perimeter.

Draw the UML diagram for the class and then implement the class. Write a test program that creates two Rectangle objects one with width 4 and height 40 and the other with width 3.5 and height 35.9. Display the width, height, area,and perimeter of each rectangle in this order.Here is my code for the Rectangle Class:

class Rectangle
{
double width;
double height;
public Rectangle() {
width = 1;
height = 1;

[code]....

The error that I am given when I compile the driver is as follows:constructor Rectangle in class Rectangle cannot be applied to given types; required: no arguments; found:int,int; reason: actual and formal argument lists differ in length.

View Replies View Related

Declare A Class That Can Be Used To Represent A Quadrilateral

Jul 16, 2014

2. Declare a class called Quadrilateral that can be used to represent a quadrilateral. What instance variables are required? This class should include the following methods:

• Accessor and mutator methods. Notice that negative and zero lengths should not be accepted.
• A method called isParallelogram that returns a Boolean value indicating if the quadrilateral is a parallelogram.
• A method called isRectangle that indicates if the quadrilateral is a rectangle. This method should invoke the method isParallelogram and return a Boolean value.
• A method called isSquare that returns the Boolean value “true” if the quadrilateral is a square. This method should invoke the method isRectangle and return a Boolean value. URL...

import java.awt.Point;
public class Quadrilateral{
private Point p1, p2, p3, p4;
public Quadrilateral (Point p1, Point p2, Point p3, Point p4) {

this.p1 = p1;
this.p2 = p2;
this.p3 = p3;
this.p4 = p4;
}
}

that is all i got, my professor has never mentioned on anything about quadrilateral,and i have 0 knowledge about this.

View Replies View Related

Creating Instances To Represent Deck Of Cards

Feb 12, 2014

I am creating a deck of 52 cards each with their rank(1 2 3...King, Ace) and suit(Clubs... Spades).

I want to be able to print out value of each card after creating them such as - 2 of CLUBS and so on. I am able to do that now. Only problem is, when it comes to the picture cards, I am representing them with numbers 11(Jack), 12(Queen) 13(King) and 14(Ace). I can't quite get around to changing the numbers to be represented as the actual words (King and so on).

I imagine that I should store the jack,queen,king,ace values in an enum too and call it in my loop but can't quite get it. Should I have like a 3rd for loop in my following codes to make it work?

Java Code:

//My main method. The Card class follows below

public static void main(String[] args) {
Card[] cards = new Card[52];
int i = 0;
for (Card.Suits suit : Card.Suits.values()) {
for (int y = 2; y < 15; y++) {
cards[i] = new Card(y, suit.name());
i++;

[Code] .....

View Replies View Related

Generate Random Number Between 0 And 19 Which Represent Location In Array

Aug 2, 2014

To simulate it, the program will generate a random number between 0 and 19, which represents the location in the array (i.e. index number). Then, the 3 numbers to the left and right of this location should be reset to the value 0. If there isn't 3 numbers to the left and right you may assume a lesser number depending on the boundaries of the array.

How to reset the numbers to 0 in the final array ?

View Replies View Related

DiceStatistics - Represent Pair Of Dice And Totals Of Their Rolls

Apr 19, 2014

Create a class called DiceStatistics to represent a pair of dice and the totals of their rolls. It should have an array of two Dice as a private data member (these are the Dice from Problem 1). It should also have, as a data member, an array of integers to represent the possible totals of rolling two dice.

The class should also have the following methods:

initStats() to initialize all the totals to zero.
rollOnce() to roll each die once, and add one to the correct totals element
printStatistics() to print the number of times each total has come up over the number of runs.

Here is my code:

public class DiceStatistics {
private final int NUMBER_OF_DICE = 2;
private Dice[] dice = new Dice[NUMBER_OF_DICE];
private int[] totals;
private int numberOfRolls;

[Code] ....

And here is the error:

run:
Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - Erroneous sym type: Dice.roll
at DiceStatistics.rollOnce(DiceStatistics.java:27)
at DiceStatistics.main(DiceStatistics.java:55)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

I know it has something to do with the fact that I need to somehow import the information from my first program "Dice" into this in order to actually get the dice statistics, but how do I do that?

View Replies View Related

Create A Class Called Dice To Represent SINGLE Cube

Apr 15, 2014

I need to work on this "Dice" program. I've done it twice already. I've also been pouring over examples on here and elsewhere online, but none of them exactly match what I'm doing, as they all say "Pair of Dice".Mine says: "Create a class called Dice to represent a SINGLE cube". It should have a method called roll() that randomly selects a number from 1-6 for the value of the dice."

It has to use java.util.random, not math.java, and it has to have numberShowing:int, roll():int, and main() all in it.The last part reads "Create a test main method for the Dice class that creates a dice and rolls it many times. Can you keep track of how many times a number comes up? Describe how or implement it in the program." I have started at this computer for hours, and read as much info as I can.

View Replies View Related

Represent Time Span Of Hours And Minutes Elapsed - Method Is Undefined For Type TEST

Jul 29, 2014

I am trying to run a class with a client code and I get the following error

The method add(TimeSpan) is undefined for the type TEST

Why i get this error?

package timespan;
// Represents a time span of hours and minutes elapsed.
// Class invariant: minutes < 60
public class TimeSpan {
private int hours;
private int minutes;

[Code] ....

View Replies View Related

JavaFX 2.0 :: 3D Sphere To Represent Each Single Point - Rotation Lagging With Large Number Of Points

May 22, 2014

We are doing a visualisation tool for point cloud research project. We use 3d sphere to represent each single point and when we have large number of points to display (~40,000), the rotation becomes very lagging.
 
What we have tried:

set JVM flag -Djavafx.animation.fullspeed=true, this worked a bit, but not significant.set JVM flag -Djavafx.autoproxy.disable=true, this did not work.

set Cache to true and CacheHint to Cache.SPEED, this did not make much difference.create another thread to do the rotation, and sync back after calculation, this did not work neither.

View Replies View Related

Instant Message GUI

Mar 14, 2014

import java.awt.*;
import javax.swing.*;
public class InstantMessageFrame extends JFrame
{
private JList friends;
private JTextField message;
private JButton send;

[code]...

1. Open the source code file of your InstantMessageFrame class from Lab 12.2.

2. Add the following three fields to the InstantMessageFrame class: a JTextField named message, a JList named friends, and a JButton named send.

3. Add a method to your InstantMessageFrame class named getMessagePanel()that returns a JPanel and has no parameters. (This method will create a JPanel that will appear in the south border of your JFrame. It will contain a text field in which a message can be entered and a button that sends an instant message to all the friends in the list.)

4. Within getMessagePanel(), instantiate a new JPanel and give it BorderLayout.Assign a message equal to a new JTextField by using the no-argument constructor of JTextField. Assign send to a new JButton,passing in "Send" to the constructor. (This will be the label on the button.)

5. Within getMessagePanel(), add the message text field to the center of the JPanel and add the send button to the east border of the JPanel. The panel is now ready, so return the JPanel reference.

6. Add a method to your InstantMessageFrame class named get-FriendsPane() that returns a JScrollPane and has no parameters.(This method will create a scrollable list that will contain the names of others that you can chat with.)

7. Within getFriendsPane(), assign friends to a new JList by using theno-argument constructor of JList.

8. Within getFriendsPane(), instantiate a new JScrollPane using the following statement: JScrollPane pane = new JScrollPane(friends);

9. The scroll pane is ready, so return the reference pane at the end of getFriendsPane().

10. Within the constructor of InstantMessageFrame, invoke getMessagePanel(),placing the returned panel in the south border of the content pane of InstantMessageFrame.An Introduction to GUI Programming 399

11. Within the constructor of InstantMessageFrame, invoke get-FriendsPane(), placing the returned scroll pane in the center of the content pane of InstantMessageFrame.

12. Save, compile, and run the InstantMessageFrame class.Your InstantMessageFrame now has three visible components: a JList,a JTextField, and a JButton.

View Replies View Related

Error Message Debug

Mar 11, 2014

I'm very new to java code I'm currently learning about loops I've tried to write this for a statement in the program I'm making but its not working. I keep getting this message

LoanQualifier.java:26: error: illegal start of expression
if (salary >0||<=250000)
^
LoanQualifier.java:28: error: illegal start of type
if (yearsOnJob >0||<50)

I'm using Jgrasp for a complier

View Replies View Related

Socket Should Only Read One Message

Apr 4, 2015

if i send messages as in the code below, is there a way to read only one message, if the client doesn't know how long it is (or if he only knows the maximum length)?in the documentation it says, that the method read(byte[]) reads until no data ist available or end of file is decteted. What does the latter mean? Can i extend the array that i sent by a byte that signals the end? Here is my Code:

Server

public class Server implements Runnable{
 ServerSocket server;
HashMap<Short,Socket> clients;
 public Server(){
clients = new HashMap<>();

[code]....

Both are startet in seperate threads. At the moment the first output of the client is "12 bytes read", and then continously "-1 bytes read"(because the server closes).

View Replies View Related

EJB / EE :: How To Pass XML File As Message In JMS

Apr 22, 2014

I am new to the JMS technology. I have written one sample sender and receiver program to pass a string message to the JMS queue and retrieve it back. It is working fine as well. But now, I want to pass a xml file to the JMS queue. Then from there I need to read the XML file and convert it into a Java object Using Jaxb. I know how to convert an XML into java object using Jaxb. But i am unable to send the XML file as a jms message to the listener.

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved