Program for DES
#include
#include
void main()
{
int a,b,c,i,j,k,l,m,n,x1;
int p,q,r,s,d,y,e,z=0;
clrscr();
printf(\n Enter the plain Text number:\n);
scanf(%d,&n);
printf(\n Enter the key number \n);
scanf(%d,&k);
printf(\n Enter the bit stream \n);
for(i=0;i {
scanf(%d,&a);
}
p=n\2;
x1=p-k;
for(i=0;i<=x1;i++)
{
c=0;
z++;
}
z=z-1;

printf(\n Enter the Key bit Stream\n);
for(i=0;i {
sca ....etc

[:=Read Full Message Here=:]

Abstract
To encrypt a text _le and to decrypt the encrypted form of the _le to get the original input text _le. This encryption and decryption is done using the most widely used private key encryption scheme based on data encryption standard (DES) adopted in 1977 by National Bureau of Standards.It was designed by IBM based on their own Luci_er cipher and input from NSA.For DES, data are encrypted in 64-bit blocks using a 56-bit key. The algorithm transforms 64-bit input in series of steps into a 64-bit output of cipher text. The same steps, w ....etc

[:=Read Full Message Here=:]

to get information about the topic c code to implement des algorithm full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-implementation-of-des-algorithm

http://seminarsprojects.net/Thread-implement-des-algorithm ....etc

[:=Read Full Message Here=:]

hi i want the dis advantages if des algorithm ,please help me ....etc

[:=Read Full Message Here=:]

The DES Algorithm Illustrated



Some Preliminary Examples of DES
DES works on bits, or binary numbers--the 0s and 1s common to digital computers. Each group of four bits makes up a hexadecimal, or base 16, number. Binary 0001 is equal to the hexadecimal number 1, binary 1000 is equal to the hexadecimal number 8, 1001 is equal to the hexadecimal number 9, 1010 is equal to the hexadecimal number A, and 1111 is equal to the hexadecimal number F.

How DES Works in Detail
D ....etc

[:=Read Full Message Here=:]

i need to implement IPSEC on Ad hoc networks as we knew ipsec is a suite protocol which consists ESP and AH header protocol so ESP is implemeted using DES or AES and also i need to simulate on ns2 how? ....etc

[:=Read Full Message Here=:]

S-DES Algorithm:-

Encryption:- Encryption algorithm takes an 8-bit block of plaintext and 10-bit key as input and produce an 8-bit block of ciphertext as output.
1. Encryption algorithm involves five functions:
1) an initial permutation function (IP)
2) a complex function (fk) which involves both substitution and permutation
3) a simple permutation function (SW) that switches two halves of data
4) the function f again
5) a permutation function that is the inverse of the initial permutation(IP-1).
2. The function fk takes as input ....etc

[:=Read Full Message Here=:]

to get information about the topic des algorithm example full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-implementation-of-des-algorithm ....etc

[:=Read Full Message Here=:]

To get full information or details of des algorithm encryption for hello example demo please have a look on the pages

http://seminarsprojects.net/Thread-data-encryption-standard-des?pid=107157

http://seminarsprojects.net/Thread-implementation-of-des-algorithm

if you again feel trouble on des algorithm encryption for hello example demo please reply in that page and ask specific fields in des algorithm encryption for hello example demo ....etc

[:=Read Full Message Here=:]

table des

Person Class
It is represented as a base class that is inherited by other child classes such as Student, Doctor, Employee and other classes. Person class has many properties and methods that help it to achieve its tasks. For example, it contains properties such as name, password, username and email that are considered main data of any person who deals with the site. It contains functions ( methods) such as loginfun, forgetpassword, modifyaccount, Createaccount that are considered as the m ....etc

[:=Read Full Message Here=:]