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 i ....etc

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#include
#include
void main()
{
char a,b;
int i,j,k,count=0;;
clrscr();
printf( enter bits and press -1 to terminate \n);
printf(\t);
for(i=0;i<100;i++)
{
a=getch();
k=a;
if(k!=13 && k!=48 && k!=49)
{
i--;
continue;
}
putch(a);
if(a==13)
break;
}
x


for(j=0;j {
if(a==49)
{
b=a;
count++;
if(count!=5)
continue;
}
if(count==5)
b='0';
else
b=a;
count=0;
}
printf(\n\t after stuffing:\n\n\t);
for(j=0;j printf(%c,b) ....etc

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#include xyzcfg.h

#include dsk6713.h
#include dsk6713_aic23.h
#define beta 1E-12 //rate of convergence
#define N 30
short int adaptive_filter(short int ,short int );
float delay;
float w;


//union{unsigned int uint; short channel;} AIC23_data;

DSK6713_AIC23_Config config = {\
0x0017, /* 0 DSK6713_AIC23_LEFTINVOL Left line input channel volume */ \
0x0017, /* 1 DSK6713_AIC23_RIGHTINVOL Right line input channel volume */\
0x00d8, /* 2 DSK6713_AIC23_LEFTHPVOL Left channel hea ....etc

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write c program to implement DES algorithm logic ....etc

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i want the program to implement datalink layer framing method chracter count.....
....etc

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#include xyzcfg.h

#include dsk6713.h
#include dsk6713_aic23.h

float filter_Coeff ={0.000000,-0.001591,-0.002423,0.000000,0.005728,
0.011139,0.010502,-0.000000,-0.018003,-0.033416,-0.031505,0.000000,
0.063010,0.144802,0.220534,0.262448,0.220534,0.144802,0.063010,0.000000,
-0.031505,-0.033416,-0.018003,-0.000000,0.010502,0.011139,0.005728,
0.000000,-0.002423,-0.001591,0.000000 };

static short in_buffer;

DSK6713_AIC23_Config config = {\
0x0017, /* 0 DSK6713_AIC23_LEFTINVOL Leftline input channel volume */\ ....etc

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Objective
Program in “C” to implement DFA.

#include
#include
void main()
{
int state;
int str,input;
char ch;
int x;
int s,n,k=0,j,a,i,l,t,q=0,fs,b,nxt;
clrscr();
printf(enter the no. states\n);
scanf(%d,&s);
printf(enter the no.of i/ps\n);
scanf(%d,&n);
for(i=0;i {
printf(enter the state\n);
scanf(%d,&state);
printf(is it final state?... .y..1/n..0\n);
scanf(%d,&a);
if(a==1)
fs=state;
}
printf(enter the i/p ....etc

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#include
#include
#include
void main()
{
int i,j,k,n,c=0,l;
char s;
clrscr();
printf(\t enter the string \n\t);
gets(s);
l=strlen(s);
printf(\t%d,l);
printf(\n\n);
j=0;
printf( \tenter the frame size: \t );
scanf(%d,&n);
k=l/n;
for(i=0;i {
printf(\t DLESTX);
while(j {

putchar(s);
c++;
j++;
if(c==n)
break;
}
printf( DLESTX \t);
printf(\n\n);
c=0;
}
getch();
....etc

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how to implement and simulate vfa in matlab? Can we get some help in code. ....etc

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Objective
Program in “C” to implement NFA.

#include
#include
int check(char* s,int state);
int a, fs,n;
int main()
{
int initial,i,j,k,l;
char ch,str;
clrscr();
printf(Enter no.of states \n);
scanf(%d,&n);
printf(enter initial state \n);
scanf(%d,&initial);
printf(Enter final states \n);
for(i=0;i {
printf(\nq);
scanf(%d,&fs);
if(fs<0)
break;
}
for(i=0;i<=n;i++)
for(j=0;j<2;j++)
for(k=0;k {
printf((q%d,%d)=q,i,j);
scanf(%d, ....etc

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