/* crypt.c written by detour@metalshell.com
 *
 * example of using the crypt lib to encrypt
 * a plain text password, entered at runtime.
 *
 * remember to compile with -lcrypt
 * gcc -lcrypt -o crypt crypt.c
 * 
 * http://www.metalshell.com/
 *
 */

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>

char *crypt(const char *key, const char *salt);
extern char *getpass();

int main() {
  char rndChar[] = 
  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789./";
  char salt[3];
  char *password;

  /* Seed the random timer */
  srandom(time(0));

  /* Random salt. (First two char's of the encrypted string) */
  salt[0] = rndChar[random() % 64];
  salt[1] = rndChar[random() % 64];
  salt[3] = 0;

  /* getpass() turns off character echoing and disables
     signals by special characters */
  password = getpass("Password: ");

  printf("%s\n", crypt(password, salt));
}