Commit dd0c913e authored by cvs2git's avatar cvs2git

This commit was manufactured by cvs2git to create tag 'v9_0_0a3'.

parent b4c627cf
/*
* Portions Copyright (c) 1995-1999 by TISLabs at Network Associates, Inc.
*
* Permission to use, copy modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND NETWORK ASSOCIATES
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* TRUSTED INFORMATION SYSTEMS BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THE SOFTWARE.
*/
/* $Id: dnssec-keygen.c,v 1.7 1999/10/29 12:56:51 marka Exp $ */
#include <config.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <isc/boolean.h>
#include <isc/commandline.h>
#include <isc/error.h>
#include <isc/mem.h>
#include <dns/keyvalues.h>
#include <dst/dst.h>
#include <dst/result.h>
static isc_boolean_t dsa_size_ok(int size);
static void die(char *str);
static void usage(char *prog);
int
main(int argc, char **argv) {
char *prog;
dst_key_t *key;
char *name = NULL, *zonefile = NULL;
isc_uint16_t flags = 0;
int alg = -1;
isc_mem_t *mctx = NULL;
int ch, rsa_exp = 0, generator = 0, param = 0;
int protocol = -1, size = -1;
dst_result_t ret;
RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
if ((prog = strrchr(argv[0],'/')) == NULL)
prog = strdup(argv[0]);
else
prog = strdup(++prog);
while ((ch = isc_commandline_parse(argc, argv,
"achiuzn:s:p:D:H:R:d:Fg:")) != -1) {
switch (ch) {
case 'a':
flags |= DNS_KEYTYPE_NOAUTH;
break;
case 'c':
flags |= DNS_KEYTYPE_NOCONF;
break;
case 'F':
rsa_exp=1;
break;
case 'g':
if (isc_commandline_argument != NULL &&
isdigit(isc_commandline_argument[0] & 0xff)) {
generator = atoi(isc_commandline_argument);
if (generator < 0)
die("-g value is not positive");
}
else
die("-g not followed by a number");
break;
case 'p':
if (isc_commandline_argument != NULL &&
isdigit(isc_commandline_argument[0] & 0xff))
protocol = atoi(isc_commandline_argument);
if (protocol < 0 || protocol > 255)
die("-p value is not [0..15]");
else
die("-p not followed by a number [0..255]");
break;
case 's':
/* Default: not signatory key */
if (isc_commandline_argument != NULL &&
isdigit(isc_commandline_argument[0] & 0xff)) {
int sign_val = atoi(isc_commandline_argument);
if (sign_val < 0 || sign_val > 15)
die("-s value is not [0..15] ");
flags |= sign_val;
}
else
die("-s not followed by a number [0..15] ");
break;
case 'h':
if ((flags & DNS_KEYFLAG_OWNERMASK) != 0)
die("Only one key type can be specified");
flags |= DNS_KEYOWNER_ENTITY;
break;
case 'u' :
if ((flags & DNS_KEYFLAG_OWNERMASK) != 0)
die("Only one key type can be specified");
flags |= DNS_KEYOWNER_USER;
break ;
case 'z':
if ((flags & DNS_KEYFLAG_OWNERMASK) != 0)
die("Only one key type can be specified");
flags |= DNS_KEYOWNER_ZONE;
break;
case 'H':
if (alg > 0)
die("Only one alg can be specified");
if (isc_commandline_argument != NULL &&
isdigit(isc_commandline_argument[0] & 0xff))
size = atoi(isc_commandline_argument);
else
die("-H requires a size");
alg = DST_ALG_HMACMD5;
break;
case 'R':
if (alg > 0)
die("Only one alg can be specified");
if (isc_commandline_argument != NULL &&
isdigit(isc_commandline_argument[0] & 0xff))
size = atoi(isc_commandline_argument);
else
die("-R requires a size");
alg = DNS_KEYALG_RSA;
break;
case 'D':
if (alg > 0)
die("Only one alg can be specified");
if (isc_commandline_argument != NULL &&
isdigit(isc_commandline_argument[0] & 0xff))
size = atoi(isc_commandline_argument);
else
die("-D requires a size");
alg = DNS_KEYALG_DSA;
break;
case 'd':
if (alg > 0)
die("Only one alg can be specified");
if (isc_commandline_argument != NULL &&
isdigit(isc_commandline_argument[0] & 0xff))
size = atoi(isc_commandline_argument);
else
die("-d requires a size");
alg = DNS_KEYALG_DH;
break;
default:
printf("invalid argument -%c\n", ch);
usage(prog);
}
}
if (isc_commandline_index == argc)
usage(prog);
if (alg < 0)
die("No algorithm specified");
if (dst_supported_algorithm(alg) == ISC_FALSE)
die("Unsupported algorithm");
if (protocol == -1) {
if ((flags & DNS_KEYFLAG_OWNERMASK) == DNS_KEYOWNER_USER)
protocol = DNS_KEYPROTO_EMAIL;
else
protocol = DNS_KEYPROTO_DNSSEC;
}
if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY) {
if (size > 0)
die("Specified null key with non-zero size");
if ((flags & DNS_KEYFLAG_SIGNATORYMASK) != 0)
die("Specified null key with signing authority");
}
if (size > 0) {
if (alg == DNS_KEYALG_RSA) {
if (size < 512 || size > 4096)
die("RSA key size out of range");
}
else if (rsa_exp != 0)
die("-F can only be specified with -R");
if (alg == DNS_KEYALG_DH) {
if (size < 16 || size > 4096)
die("DH key size out of range");
}
else if (generator != 0)
die("-g can only be specified with -d");
if (alg == DNS_KEYALG_DSA && !dsa_size_ok(size))
die("Invalid DSS key size");
}
else if (size < 0)
die("No key size specified");
name = argv[isc_commandline_index++];
if (argc > isc_commandline_index)
zonefile = argv[isc_commandline_index];
if (name[strlen(name) - 1] != '.' && alg != DST_ALG_HMACMD5) {
name = isc_mem_get(mctx, strlen(name) + 2);
sprintf(name, "%s.", argv[isc_commandline_index - 1]);
printf("** Added a trailing dot to the name to make it"
" fully qualified **\n");
}
printf("Generating %d bit ", size);
switch(alg) {
case DNS_KEYALG_RSA:
printf("RSA");
param = rsa_exp;
break;
case DNS_KEYALG_DH:
printf("DH");
param = generator;
break;
case DNS_KEYALG_DSA:
printf("DSS");
param = 0;
break;
case DST_ALG_HMACMD5:
printf("HMAC-MD5");
param = 0;
break;
default:
die("Unknown algorithm");
}
printf(" key for %s\n\n", name);
ret = dst_key_generate(name, alg, size, param, flags, protocol, mctx,
&key);
if (ret != ISC_R_SUCCESS) {
printf("Failed generating key %s\n", name);
exit(-1);
}
ret = dst_key_tofile(key, DST_TYPE_PUBLIC | DST_TYPE_PRIVATE);
if (ret != ISC_R_SUCCESS) {
printf("Failed to write key %s(%d)\n", name, dst_key_id(key));
exit(-1);
}
printf("Generated %d bit key %s: id=%d alg=%d flags=%d\n\n", size,
name, dst_key_id(key), dst_key_alg(key), dst_key_flags(key));
exit(0);
}
static isc_boolean_t
dsa_size_ok(int size) {
return (ISC_TF(size >= 512 && size <= 1024 && size % 64 == 0));
}
static void
die(char *str) {
printf("%s\n", str);
exit(-1);
}
static void
usage(char *prog) {
printf("Usage:\n\t");
printf ("%s <-D|-H|-R|-d> <size> [-F] [-g n] [-z|-h|-u] [-a] [-c] "
" [-p n] [-s n] name [zonefile] \n\n", prog);
printf("\t-D generate DSA/DSS key: size must be in the range\n");
printf("\t\t[512..1024] and a multiple of 64\n");
printf("\t-H generate HMAC-MD5 key: size in the range [1..512]\n");
printf("\t-R generate RSA key: size in the range [512..4096]\n");
printf("\t-d generate DH key in the range [16..4096]\n");
printf("\t-F use large exponent (RSA only)\n");
printf("\t-g use specified generator (DH only)\n");
printf("\t-z Zone key \n");
printf("\t-h Host/Entity key \n");
printf("\t-u User key (default) \n");
printf("\t-a Key CANNOT be used for authentication\n");
printf("\t-c Key CANNOT be used for encryption\n");
printf("\t-p Set protocol field to <n>\n");
printf("\t\t default: 2 (email) for User keys, 3 (dnssec) for all others\n");
printf("\t-s Strength value this key signs DNS records with\n");
printf("\t\t default: 0\n");
printf("\tname: the owner of the key\n");
exit (-1);
}
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