plz reply on wafic.chaib@hotmail.com, C/C++ Programming

You are to implement a code cracking system. The system will deploy four processes (p1,p2,p3 & p4) to try to guess the password of an encrypted code.
For encryption, we consider that the formula is: C = P XOR K, where
• C = encrypted code
• P = plain text
• K = key
For decryption the formula is: P = C XOR K. So, your program will try to find K using this formula. The XOR operator is ^.
Given an encrypted code C and plain code P your program should deploy three processes to try and find the key used to encrypt the plain code. These three processes will be under the control of process P1.
All processes will send their results to process P1 and process P1 will terminate the three processes and display the encryption key and decrypted text once any of the three processes finds the key.
For simplicity we will consider that we have the original number P stored in a file called plain.txt and the encrypted code is stored in a file called cipher.txt. Consider that only numbers are stored in these files and they have a range between 0 and 100000000.
So we have P and C your program should find the key K. Consider that K is a positive number between 0 and 1000000.
Posted Date: 12/23/2012 8:28:36 AM | Location : Lebanon







Related Discussions:- plz reply on wafic.chaib@hotmail.com, Assignment Help, Ask Question on plz reply on wafic.chaib@hotmail.com, Get Answer, Expert's Help, plz reply on wafic.chaib@hotmail.com Discussions

Write discussion on plz reply on wafic.chaib@hotmail.com
Your posts are moderated
Related Questions
it is a class enclosed in the scope of another class. For illustration: // Example: Nested class // class OuterClass { class NestedClass { // ... }; // .

programme for time table in c++

C Program for FUNCTION OF MERGE #include conio.h> #include stdio.h> char cot(char a[],char b[]); void main() {           char a[50],b[50];           clrscr()

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Write a function that has a single int parameter n and returns an int: 0 if n is negative, otherwise 1. You are not allowed to simply check the integer value, and should use the fu

c program to construct a structure: struct sensus                 {                                 char name[30];                                 long int population;

Assume variables x, f, and d are of type int, float, and double, respectively.  Their values are arbitrary, except that neither f nor d equals +∞, -∞, or NaN .  For each of the fo

obtain two numbers from thekey board,and determain and display(if either)is the larger of two numbers.

Program of file data: FileData::FileData( ffblk& blk ) :     fileName( blk.ff_name ),     fileDate( (blk.ff_fdate >> 5) & 0x000F,               blk.ff_fdate & 0x0001F

Question: (a) A bank has four types of accounts with annual interest rates as follows: Savings 8% Savings with Cheque Book 5% Current 4% Fixed deposits 10% Using