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/*
* mkrandkeys - make a key file for xntpd with some quite random keys
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "ntp_stdlib.h"
#define STREQ(a, b) (*(a) == *(b) && strcmp((a), (b)) == 0)
char *progname;
int debug;
u_long keydata[2];
int std = 1; /* DES standard key format */
u_char dokey[16] = { 0 };
static void rand_data P((u_long *));
/*
* main - parse arguments and handle options
*/
void
main(argc, argv)
int argc;
char *argv[];
{
int c;
int i;
int j;
int errflg = 0;
int numkeys;
u_long tmp;
char *passwd;
extern int ntp_optind;
extern char *ntp_optarg;
extern char *getpass();
numkeys = 0;
progname = argv[0];
passwd = NULL;
while ((c = ntp_getopt(argc, argv, "dnp:s")) != EOF)
switch (c) {
case 'd':
++debug;
break;
case 'n':
std = 0;
break;
case 'p':
passwd = ntp_optarg;
break;
case 's':
std = 1;
break;
default:
errflg++;
break;
}
numkeys = 0;
for (; !errflg && ntp_optind < argc; ntp_optind++) {
c = atoi(argv[ntp_optind]);
if (c <= 0 || c > 15) {
(void) fprintf(stderr, "%s: invalid key number `%s'\n",
progname, argv[ntp_optind]);
exit(2);
}
dokey[c] = 1;
numkeys++;
}
if (errflg || numkeys == 0) {
(void) fprintf(stderr,
"usage: %s [-ns] [-p seed] key# [key# ...]\n",
progname);
exit(2);
}
while (passwd == 0 || *passwd == '\0') {
passwd = getpass("Seed: ");
if (*passwd == '\0') {
(void) fprintf(stderr,
"better use a better seed than that\n");
}
}
keydata[0] = keydata[1] = 0;
for (i = 0; i < 8 && *passwd != '\0'; i++) {
keydata[i/4] |= ((((u_long)(*passwd))&0xff)<<(1+((3-(i%4))*8)));
passwd++;
}
for (i = 1; i <= 15; i++) {
if (dokey[i]) {
for (c = 0, tmp = 0; c < 32; c += 4)
tmp |= (i << c);
keydata[0] ^= tmp;
keydata[1] ^= tmp;
rand_data(keydata);
DESauth_parity(keydata);
if (std) {
(void)printf("%-2d S\t%08x%08x\n",
i, keydata[0], keydata[1]);
} else {
for (j = 0; j < 2; j++) {
keydata[j]
= ((keydata[j] & 0xfefefefe) >> 1)
| ((keydata[j] & 0x01010101) << 7);
}
(void)printf("%-2d N\t%08x%08x\n",
i, keydata[0], keydata[1]);
}
}
}
exit(0);
}
char *volatile_file[] = {
"/bin/echo",
"/bin/sh",
"/bin/cat",
"/bin/ls",
"/bin/stty",
"/bin/date",
"/bin/cat",
"/bin/cc",
"/etc/motd",
"/etc/utmp",
"/dev/kmem",
"/dev/null",
"",
};
#define NEXT(X) (0x1e1f2f2d*(X) + 0x361962e9)
static void
rand_data(data)
u_long *data;
{
register i;
struct stat buf;
extern long time();
char ekeys[128], dkeys[128];
*data ^= 0x9662f394;
*(data+1) ^= 0x9f17c55f;
DESauth_subkeys(data, ekeys, dkeys);
*data ^= NEXT(getpid() + (getuid() << 16));
*(data+1) ^= NEXT(time((long *)0));
DESauth_des(data, ekeys);
for (i = 0; strlen(volatile_file[i]); i++) {
if (stat(volatile_file[i], &buf) == -1)
continue;
if (i & 1) {
*data ^= NEXT(buf.st_atime);
*(data+1) ^= NEXT(buf.st_mtime);
} else {
*data ^= NEXT(buf.st_mtime);
*(data+1) ^= NEXT(buf.st_atime);
}
DESauth_des(data, ekeys);
}
}
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