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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
112 #include <openssl/opensslconf.h> /* for OPENSSL_NO_DH */
113 #ifndef OPENSSL_NO_DH
119 # include <openssl/bio.h>
120 # include <openssl/err.h>
121 # include <openssl/bn.h>
122 # include <openssl/dh.h>
123 # include <openssl/x509.h>
124 # include <openssl/pem.h>
126 # ifndef OPENSSL_NO_DSA
127 # include <openssl/dsa.h>
131 # define PROG dhparam_main
133 # define DEFBITS 2048
136 * -inform arg - input format - default PEM (DER or PEM)
137 * -outform arg - output format - default PEM
138 * -in arg - input file - default stdin
139 * -out arg - output file - default stdout
140 * -dsaparam - read or generate DSA parameters, convert to DH
141 * -check - check the parameters are ok
147 static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb);
149 int MAIN(int, char **);
151 int MAIN(int argc, char **argv)
154 int i, badops = 0, text = 0;
155 # ifndef OPENSSL_NO_DSA
158 BIO *in = NULL, *out = NULL;
159 int informat, outformat, check = 0, noout = 0, C = 0, ret = 1;
160 char *infile, *outfile, *prog;
169 if ((bio_err = BIO_new(BIO_s_file())) != NULL)
170 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
172 if (!load_config(bio_err, NULL))
177 informat = FORMAT_PEM;
178 outformat = FORMAT_PEM;
184 if (strcmp(*argv, "-inform") == 0) {
187 informat = str2fmt(*(++argv));
188 } else if (strcmp(*argv, "-outform") == 0) {
191 outformat = str2fmt(*(++argv));
192 } else if (strcmp(*argv, "-in") == 0) {
196 } else if (strcmp(*argv, "-out") == 0) {
201 # ifndef OPENSSL_NO_ENGINE
202 else if (strcmp(*argv, "-engine") == 0) {
208 else if (strcmp(*argv, "-check") == 0)
210 else if (strcmp(*argv, "-text") == 0)
212 # ifndef OPENSSL_NO_DSA
213 else if (strcmp(*argv, "-dsaparam") == 0)
216 else if (strcmp(*argv, "-C") == 0)
218 else if (strcmp(*argv, "-noout") == 0)
220 else if (strcmp(*argv, "-2") == 0)
222 else if (strcmp(*argv, "-5") == 0)
224 else if (strcmp(*argv, "-rand") == 0) {
228 } else if (((sscanf(*argv, "%d", &num) == 0) || (num <= 0)))
236 BIO_printf(bio_err, "%s [options] [numbits]\n", prog);
237 BIO_printf(bio_err, "where options are\n");
238 BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n");
240 " -outform arg output format - one of DER PEM\n");
241 BIO_printf(bio_err, " -in arg input file\n");
242 BIO_printf(bio_err, " -out arg output file\n");
243 # ifndef OPENSSL_NO_DSA
245 " -dsaparam read or generate DSA parameters, convert to DH\n");
247 BIO_printf(bio_err, " -check check the DH parameters\n");
249 " -text print a text form of the DH parameters\n");
250 BIO_printf(bio_err, " -C Output C code\n");
252 " -2 generate parameters using 2 as the generator value\n");
254 " -5 generate parameters using 5 as the generator value\n");
256 " numbits number of bits in to generate (default 2048)\n");
257 # ifndef OPENSSL_NO_ENGINE
259 " -engine e use engine e, possibly a hardware device.\n");
261 BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR,
262 LIST_SEPARATOR_CHAR);
264 " - load the file (or the files in the directory) into\n");
265 BIO_printf(bio_err, " the random number generator\n");
266 BIO_printf(bio_err, " -noout no output\n");
270 ERR_load_crypto_strings();
272 e = setup_engine(bio_err, engine, 0);
277 # ifndef OPENSSL_NO_DSA
281 "generator may not be chosen for DSA parameters\n");
295 BN_GENCB_set(&cb, dh_cb, bio_err);
296 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) {
298 "warning, not much extra random data, consider using the -rand option\n");
301 BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
302 app_RAND_load_files(inrand));
304 # ifndef OPENSSL_NO_DSA
306 DSA *dsa = DSA_new();
309 "Generating DSA parameters, %d bit long prime\n", num);
311 || !DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL,
315 ERR_print_errors(bio_err);
319 dh = DSA_dup_DH(dsa);
322 ERR_print_errors(bio_err);
330 "Generating DH parameters, %d bit long safe prime, generator %d\n",
332 BIO_printf(bio_err, "This is going to take a long time\n");
333 if (!dh || !DH_generate_parameters_ex(dh, num, g, &cb)) {
334 ERR_print_errors(bio_err);
339 app_RAND_write_file(NULL, bio_err);
342 in = BIO_new(BIO_s_file());
344 ERR_print_errors(bio_err);
348 BIO_set_fp(in, stdin, BIO_NOCLOSE);
350 if (BIO_read_filename(in, infile) <= 0) {
356 if (informat != FORMAT_ASN1 && informat != FORMAT_PEM) {
357 BIO_printf(bio_err, "bad input format specified\n");
360 # ifndef OPENSSL_NO_DSA
364 if (informat == FORMAT_ASN1)
365 dsa = d2i_DSAparams_bio(in, NULL);
366 else /* informat == FORMAT_PEM */
367 dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL);
370 BIO_printf(bio_err, "unable to load DSA parameters\n");
371 ERR_print_errors(bio_err);
375 dh = DSA_dup_DH(dsa);
378 ERR_print_errors(bio_err);
384 if (informat == FORMAT_ASN1) {
386 * We have no PEM header to determine what type of DH params it
387 * is. We'll just try both.
389 dh = d2i_DHparams_bio(in, NULL);
390 /* BIO_reset() returns 0 for success for file BIOs only!!! */
391 if (dh == NULL && BIO_reset(in) == 0)
392 dh = d2i_DHxparams_bio(in, NULL);
394 /* informat == FORMAT_PEM */
395 dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
399 BIO_printf(bio_err, "unable to load DH parameters\n");
400 ERR_print_errors(bio_err);
408 out = BIO_new(BIO_s_file());
410 ERR_print_errors(bio_err);
413 if (outfile == NULL) {
414 BIO_set_fp(out, stdout, BIO_NOCLOSE);
415 # ifdef OPENSSL_SYS_VMS
417 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
418 out = BIO_push(tmpbio, out);
422 if (BIO_write_filename(out, outfile) <= 0) {
429 DHparams_print(out, dh);
433 if (!DH_check(dh, &i)) {
434 ERR_print_errors(bio_err);
437 if (i & DH_CHECK_P_NOT_PRIME)
438 printf("p value is not prime\n");
439 if (i & DH_CHECK_P_NOT_SAFE_PRIME)
440 printf("p value is not a safe prime\n");
441 if (i & DH_UNABLE_TO_CHECK_GENERATOR)
442 printf("unable to check the generator value\n");
443 if (i & DH_NOT_SUITABLE_GENERATOR)
444 printf("the g value is not a generator\n");
446 printf("DH parameters appear to be ok.\n");
452 len = BN_num_bytes(dh->p);
453 bits = BN_num_bits(dh->p);
454 data = (unsigned char *)OPENSSL_malloc(len);
456 perror("OPENSSL_malloc");
459 printf("#ifndef HEADER_DH_H\n"
460 "#include <openssl/dh.h>\n" "#endif\n");
461 printf("DH *get_dh%d()\n\t{\n", bits);
463 l = BN_bn2bin(dh->p, data);
464 printf("\tstatic unsigned char dh%d_p[]={", bits);
465 for (i = 0; i < l; i++) {
468 printf("0x%02X,", data[i]);
470 printf("\n\t\t};\n");
472 l = BN_bn2bin(dh->g, data);
473 printf("\tstatic unsigned char dh%d_g[]={", bits);
474 for (i = 0; i < l; i++) {
477 printf("0x%02X,", data[i]);
479 printf("\n\t\t};\n");
481 printf("\tDH *dh;\n\n");
482 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
483 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
485 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
487 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
488 printf("\t\t{ DH_free(dh); return(NULL); }\n");
490 printf("\tdh->length = %ld;\n", dh->length);
491 printf("\treturn(dh);\n\t}\n");
496 if (outformat == FORMAT_ASN1) {
498 i = i2d_DHxparams_bio(out, dh);
500 i = i2d_DHparams_bio(out, dh);
501 } else if (outformat == FORMAT_PEM) {
503 i = PEM_write_bio_DHxparams(out, dh);
505 i = PEM_write_bio_DHparams(out, dh);
507 BIO_printf(bio_err, "bad output format specified for outfile\n");
511 BIO_printf(bio_err, "unable to write DH parameters\n");
512 ERR_print_errors(bio_err);
529 /* dh_cb is identical to dsa_cb in apps/dsaparam.c */
530 static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb)
542 BIO_write(cb->arg, &c, 1);
543 (void)BIO_flush(cb->arg);
550 #else /* !OPENSSL_NO_DH */
553 static void *dummy = &dummy;