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git.ipfire.org Git - thirdparty/openssl.git/blob - apps/dsaparam.c
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
59 #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
61 #ifndef OPENSSL_NO_DSA
68 # include <openssl/bio.h>
69 # include <openssl/err.h>
70 # include <openssl/bn.h>
71 # include <openssl/dsa.h>
72 # include <openssl/x509.h>
73 # include <openssl/pem.h>
76 # define PROG dsaparam_main
79 * -inform arg - input format - default PEM (DER or PEM)
80 * -outform arg - output format - default PEM
81 * -in arg - input file - default stdin
82 * -out arg - output file - default stdout
89 * -timebomb n - interrupt keygen after <n> seconds
95 static int stop_keygen_flag
= 0;
97 static void timebomb_sigalarm(int foo
)
104 static int dsa_cb(int p
, int n
, BN_GENCB
*cb
);
106 int MAIN(int, char **);
108 int MAIN(int argc
, char **argv
)
111 int i
, badops
= 0, text
= 0;
112 BIO
*in
= NULL
, *out
= NULL
;
113 int informat
, outformat
, noout
= 0, C
= 0, ret
= 1;
114 char *infile
, *outfile
, *prog
, *inrand
= NULL
;
115 int numbits
= -1, num
, genkey
= 0;
117 int non_fips_allow
= 0;
119 # ifndef OPENSSL_NO_ENGINE
129 if ((bio_err
= BIO_new(BIO_s_file())) != NULL
)
130 BIO_set_fp(bio_err
, stderr
, BIO_NOCLOSE
| BIO_FP_TEXT
);
132 if (!load_config(bio_err
, NULL
))
137 informat
= FORMAT_PEM
;
138 outformat
= FORMAT_PEM
;
144 if (strcmp(*argv
, "-inform") == 0) {
147 informat
= str2fmt(*(++argv
));
148 } else if (strcmp(*argv
, "-outform") == 0) {
151 outformat
= str2fmt(*(++argv
));
152 } else if (strcmp(*argv
, "-in") == 0) {
156 } else if (strcmp(*argv
, "-out") == 0) {
161 # ifndef OPENSSL_NO_ENGINE
162 else if (strcmp(*argv
, "-engine") == 0) {
169 else if (strcmp(*argv
, "-timebomb") == 0) {
172 timebomb
= atoi(*(++argv
));
175 else if (strcmp(*argv
, "-text") == 0)
177 else if (strcmp(*argv
, "-C") == 0)
179 else if (strcmp(*argv
, "-genkey") == 0) {
182 } else if (strcmp(*argv
, "-rand") == 0) {
187 } else if (strcmp(*argv
, "-noout") == 0)
189 else if (strcmp(*argv
, "-non-fips-allow") == 0)
191 else if (sscanf(*argv
, "%d", &num
) == 1) {
196 BIO_printf(bio_err
, "unknown option %s\n", *argv
);
206 BIO_printf(bio_err
, "%s [options] [bits] <infile >outfile\n", prog
);
207 BIO_printf(bio_err
, "where options are\n");
208 BIO_printf(bio_err
, " -inform arg input format - DER or PEM\n");
209 BIO_printf(bio_err
, " -outform arg output format - DER or PEM\n");
210 BIO_printf(bio_err
, " -in arg input file\n");
211 BIO_printf(bio_err
, " -out arg output file\n");
212 BIO_printf(bio_err
, " -text print as text\n");
213 BIO_printf(bio_err
, " -C Output C code\n");
214 BIO_printf(bio_err
, " -noout no output\n");
215 BIO_printf(bio_err
, " -genkey generate a DSA key\n");
217 " -rand files to use for random number input\n");
218 # ifndef OPENSSL_NO_ENGINE
220 " -engine e use engine e, possibly a hardware device.\n");
224 " -timebomb n interrupt keygen after <n> seconds\n");
227 " number number of bits to use for generating private key\n");
231 ERR_load_crypto_strings();
233 in
= BIO_new(BIO_s_file());
234 out
= BIO_new(BIO_s_file());
235 if ((in
== NULL
) || (out
== NULL
)) {
236 ERR_print_errors(bio_err
);
241 BIO_set_fp(in
, stdin
, BIO_NOCLOSE
);
243 if (BIO_read_filename(in
, infile
) <= 0) {
248 if (outfile
== NULL
) {
249 BIO_set_fp(out
, stdout
, BIO_NOCLOSE
);
250 # ifdef OPENSSL_SYS_VMS
252 BIO
*tmpbio
= BIO_new(BIO_f_linebuffer());
253 out
= BIO_push(tmpbio
, out
);
257 if (BIO_write_filename(out
, outfile
) <= 0) {
263 # ifndef OPENSSL_NO_ENGINE
264 setup_engine(bio_err
, engine
, 0);
268 app_RAND_load_file(NULL
, bio_err
, (inrand
!= NULL
));
270 BIO_printf(bio_err
, "%ld semi-random bytes loaded\n",
271 app_RAND_load_files(inrand
));
277 BIO_printf(bio_err
, "Error allocating BN_GENCB object\n");
280 BN_GENCB_set(cb
, dsa_cb
, bio_err
);
284 BIO_printf(bio_err
, "Error allocating DSA object\n");
288 dsa
->flags
|= DSA_FLAG_NON_FIPS_ALLOW
;
289 BIO_printf(bio_err
, "Generating DSA parameters, %d bit long prime\n",
291 BIO_printf(bio_err
, "This could take some time\n");
294 struct sigaction act
;
295 act
.sa_handler
= timebomb_sigalarm
;
298 "(though I'll stop it if not done within %d secs)\n",
300 if (sigaction(SIGALRM
, &act
, NULL
) != 0) {
301 BIO_printf(bio_err
, "Error, couldn't set SIGALRM handler\n");
307 if (!DSA_generate_parameters_ex(dsa
, num
, NULL
, 0, NULL
, NULL
, cb
)) {
309 if (stop_keygen_flag
) {
310 BIO_printf(bio_err
, "DSA key generation time-stopped\n");
311 /* This is an asked-for behaviour! */
316 ERR_print_errors(bio_err
);
317 BIO_printf(bio_err
, "Error, DSA key generation failed\n");
320 } else if (informat
== FORMAT_ASN1
)
321 dsa
= d2i_DSAparams_bio(in
, NULL
);
322 else if (informat
== FORMAT_PEM
)
323 dsa
= PEM_read_bio_DSAparams(in
, NULL
, NULL
, NULL
);
325 BIO_printf(bio_err
, "bad input format specified\n");
329 BIO_printf(bio_err
, "unable to load DSA parameters\n");
330 ERR_print_errors(bio_err
);
335 DSAparams_print(out
, dsa
);
342 len
= BN_num_bytes(dsa
->p
);
343 bits_p
= BN_num_bits(dsa
->p
);
344 data
= (unsigned char *)OPENSSL_malloc(len
+ 20);
346 perror("OPENSSL_malloc");
349 l
= BN_bn2bin(dsa
->p
, data
);
350 printf("static unsigned char dsa%d_p[]={", bits_p
);
351 for (i
= 0; i
< l
; i
++) {
354 printf("0x%02X,", data
[i
]);
358 l
= BN_bn2bin(dsa
->q
, data
);
359 printf("static unsigned char dsa%d_q[]={", bits_p
);
360 for (i
= 0; i
< l
; i
++) {
363 printf("0x%02X,", data
[i
]);
367 l
= BN_bn2bin(dsa
->g
, data
);
368 printf("static unsigned char dsa%d_g[]={", bits_p
);
369 for (i
= 0; i
< l
; i
++) {
372 printf("0x%02X,", data
[i
]);
374 printf("\n\t};\n\n");
376 printf("DSA *get_dsa%d()\n\t{\n", bits_p
);
377 printf("\tDSA *dsa;\n\n");
378 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n");
379 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n",
381 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n",
383 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n",
386 ("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n");
387 printf("\t\t{ DSA_free(dsa); return(NULL); }\n");
388 printf("\treturn(dsa);\n\t}\n");
392 if (outformat
== FORMAT_ASN1
)
393 i
= i2d_DSAparams_bio(out
, dsa
);
394 else if (outformat
== FORMAT_PEM
)
395 i
= PEM_write_bio_DSAparams(out
, dsa
);
397 BIO_printf(bio_err
, "bad output format specified for outfile\n");
401 BIO_printf(bio_err
, "unable to write DSA parameters\n");
402 ERR_print_errors(bio_err
);
410 if ((dsakey
= DSAparams_dup(dsa
)) == NULL
)
413 dsakey
->flags
|= DSA_FLAG_NON_FIPS_ALLOW
;
414 if (!DSA_generate_key(dsakey
)) {
415 ERR_print_errors(bio_err
);
419 if (outformat
== FORMAT_ASN1
)
420 i
= i2d_DSAPrivateKey_bio(out
, dsakey
);
421 else if (outformat
== FORMAT_PEM
)
422 i
= PEM_write_bio_DSAPrivateKey(out
, dsakey
, NULL
, NULL
, 0, NULL
,
425 BIO_printf(bio_err
, "bad output format specified for outfile\n");
432 app_RAND_write_file(NULL
, bio_err
);
447 static int dsa_cb(int p
, int n
, BN_GENCB
*cb
)
459 BIO_write(BN_GENCB_get_arg(cb
), &c
, 1);
460 (void)BIO_flush(BN_GENCB_get_arg(cb
));
462 if (stop_keygen_flag
)
467 #else /* !OPENSSL_NO_DSA */
470 static void *dummy
= &dummy
;