CLIENT-SERVEUR : DONNEES CRYPTEES XOR

//#######################SERVEUR#########################"
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

int main(int argv,char*argc[])
{
 system("clear");

 int sock,nsock, cle = atoi(argc[1]), n;
 struct sockaddr_in sin;

 char msg[255], buffer[255];
 strcpy(msg, argc[2]);
  for(n = 0; n < (strlen(msg) + 1); n++)
  {
   buffer[n] = msg[n] ^ cle;
  }

 sin.sin_family      = AF_INET;
 sin.sin_addr.s_addr = INADDR_ANY;
 sin.sin_port        = htons(atoi(argc[1]));
 bzero(&(sin.sin_zero),8);

 sock = socket(AF_INET,SOCK_STREAM,0);

 printf(" port %s en écoute...\n", argc[1]);
 bind(sock, (struct sockaddr *)&sin, sizeof(struct sockaddr));
 listen(sock,50);

  while(1)
  {
   int sin_size = sizeof(struct sockaddr_in);
   nsock = accept(sock,(struct sockaddr *)&sin,&sin_size);
   printf("  connection de %s sur le port %s\n",inet_ntoa(sin.sin_addr),argc[1]);
   send(nsock,buffer,sizeof(buffer),0);
  }

 close(nsock);
 return 0;
}






//#######################CLIENT##############################
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

int main(int argv,char*argc[])
{
 system("clear");

 char buffer[255], mot[255];
 int sock, cle = atoi(argc[2]), n;
 struct sockaddr_in sin;

 sin.sin_family      = AF_INET;
 sin.sin_addr.s_addr = inet_addr(argc[1]);
 sin.sin_port        = htons(atoi(argc[2]));
 bzero(&(sin.sin_zero),8);

 sock = socket(AF_INET,SOCK_STREAM,0);

 printf(" tentative de connection sur %s / %s...\n", argc[1], argc[2]);
 connect(sock,(struct sockaddr*)&sin,sizeof(struct sockaddr));
 printf("  connecté %s / %s\n", argc[1], argc[2]);

 recv(sock,buffer,sizeof(buffer),0);
    for(n = 0; n < (strlen(buffer) + 1); n++)
    {
      mot[n] = buffer[n] ^ cle;
    }
 printf("  buffer: %s\n", mot);

 close(sock);
 return 0;
}