class ExceptionA extends Exceptioncfw_
class ExceptionB extends ExceptionAcfw_
public static void test() throws ExceptionA, ExceptionB,cfw_
Scanner input = new Scanner( System.in);
public class ExceptionHandling
public static void main(String args)
throw new ExceptionA ("This is my exception");
public class EmployeePayRate
public static void main (String args)
Employee employee1 = new Employee("Timothy", 46, 12.50);
private int data;
private static final Random generator = new Random ();
public LinearArray ( int size )
data = new int [ size ] ;
for (int i = 0; i < size; i+ )
data[ i ] = 1
public class SalaryCal cfw_
public static void main (String args) cfw_
/*The company pays straight time for the first
40 hours worked by each employee and time and
a half for all hours worked in excess of 40.*/
A New Technique to Hide Encrypted Data in QR
A. Somdip Dey1, B. Joyshree Nath2 and C. Asoke Nath3
Department of Computer Science
St. Xaviers College [Autonomous]
A.K.Chaudhuri School of I.T.
Raja Bazar Science College
Formal Security Proofs
Hubert Comon-Lundh and Stphanie Delaune
The goal of the lecture is to present some aspects of formal security proofs of
protocols. This is a wide area, and there is another lecture (by B. Banchet) on related
topics. The id
_-[ Hacking Guide ]-_
A complete and thorough beginners guide to the art of hacking.
Table of Contents:
What is hacking?
Basic Web Hacking Techniques
Brief introduction to
A Methodology to Conceal QR Codes for
Akshay Choche and Hamid R. Arabnia
Department of Computer Science, University of Georgia, Athens, GA 30602
cfw_choche, [email protected]
Abstract. Steganography is a technique used to conceal inform
Research Project guidelines
Students are required to read three papers related to several advanced topics in information
While reading try to answer the following questions:
What does the paper propose?
What is the value of this paper?
In your o
Network Security (Class Session 0)
Classify each of these scenarios as a confidentiality, integrity, Authenticity, or availability
violation (or combination).
1. A worm infects Alices computer and erases all her images.
2. A thief breaks into a museum
Network Security (Class Session 1)
Exercise 1: To be sure that two entities shared the same key you create a random bit string the
length of the key, XOR it with the key, and send the result over the channel. The receiving end
XORs the incoming block with
1. Classify each of the following as a violation of
confidentiality, of integrity, of availability, or of some
a). John peeks at Alices password when she is logging
b). John logs into Alices account using Alices
password without A
Network Security, ISA 656, Angelos Stavrou
ISA 656: Network Security
I, _, hereby certify that I read the
University Policy Number 1301: Responsible Use of Computing
Kerberos uses a modified version of CBC called PCBC which is illustrated in the following
a- Draw the decryption figure of PCBC.
b- How can Bob obtain m2
c- If Bob received a modified c2, Which
Security Handshake Pitfalls
Ahmet Burak Can
Password authentication is subject to
Alternative: Cryptographic challenge-response
CSC474 - Information Systems Security: Homework3 Solutions
April 18, 2005
1. (20 points) Harry is given a job as network administrator for a Microscape. His assignment
is to setup a firewall for the company. He decides to use a simple packet filtering fir
Class Session I
1. Computer security is generally considered to be the responsibility of?
A. everyone in the organization.
B. corporate management.
C. the corporate security staff.
D. everyone with computer access.
2. The likelihood of a threat source
Homework 1 - Solutions
1. Please classify each of the following as a violation of confidentiality, of integrity,
of availability, of authenticity, or of some combination of those.
1. John copies Mary's homework.
2. Paul crash
CSC474 - Information Systems Security: Homework2 Solutions
March 30, 2005
1. Problem 3 on page 236 (Multiple KDC Domains)
let me talk to KDC A
KDC A generates KaC
KA-C cfw_talk to Alice; use key
KDC C generates KaB
KB -C cfw_talk to Alice at A;
CSC474/574 - Information Systems Security:
Homework1 Solutions Sketch
February 20, 2005
1. Consider slide 12 in the handout for topic 2.2. Prove that the decryption process of a one-round Feistel cipher is the same as the input of
the corresponding encryp
java.util.Scanner; /initializes scanner
public class salaryCalculator/ defines class name
public static void main( String args)
/create Scanner to obtain input from command window
Scanner input= new Scanner(System.in );
double hours; / number
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
* @author Pauline Ducasse
How to Think Like a Computer
Scientist: Learning with Python 3
Release 3rd Edition
Peter Wentworth, Jeffrey Elkner,
Allen B. Downey and Chris Meyers
February 09, 2012
The way of the program
1.1 The Python programming language
The following error message appeared in Freddy's program.
an example of which kind of error?
2. Freddy did not get the result he anticipated in his program.
kind of error best describ
The Player Class
This class will be used to simulate the player controlled by the user. It must contain AT LEAST all of
the fields and methods described below.
A string that holds the name of the Player. This will be set through a parameter.