int main(int argc, char **argv)
{
int iterations = 10;
char *salt = "pepper";
int length = 32;
char *password;
int c;
char *key;
while ((c = getopt(argc, argv, "i:s:l:")) != -1)
{
switch (c)
{
case 'i':
iterations = atoi(optarg);
if ( (iterations < 1) || (iterations > 10000000))
usage();
break;
case 's':
salt = optarg;
break;
case 'l':
length = atoi(optarg);
if ( (length < 1) || (length > 5000) )
usage();
break;
case '?':
usage();
default:
abort();
}
}
if (optind != (argc - 1))
usage();
password = argv[optind];
key = alloca(length);
pkcs5_derive_key(make_hmac_algorithm(&sha1_algorithm),
strlen(password), password,
strlen(salt), salt,
iterations,
length, key);
printf("Key:");
print_hex(length, key);
printf("\n");
return 0;
}
int main(int argc, char **argv)
{
int iterations = 10;
char *salt = "pepper";
int length = 32;
char *password;
int c;
char *key;
enum { OPT_HELP = 300 };
static const struct option options[] =
{
/* Name, args, flag, val */
{ "help", no_argument, NULL, OPT_HELP },
{ NULL, 0, NULL, 0 }
};
while ((c = getopt_long(argc, argv, "i:s:l:", options, NULL)) != -1)
{
switch (c)
{
case 'i':
iterations = atoi(optarg);
if ( (iterations < 1) || (iterations > 10000000))
usage();
break;
case 's':
salt = optarg;
break;
case 'l':
length = atoi(optarg);
if ( (length < 1) || (length > 5000) )
usage();
break;
case OPT_HELP:
usage();
return EXIT_SUCCESS;
case '?':
return EXIT_FAILURE;
default:
abort();
}
}
if (optind != (argc - 1))
usage();
password = argv[optind];
key = alloca(length);
pkcs5_derive_key(make_hmac_algorithm(&nettle_sha1),
strlen(password), password,
strlen(salt), salt,
iterations,
length, key);
printf("Key:");
print_hex(length, key);
printf("\n");
return 0;
}
