2 /* obsoleted by dhparam.c */
3 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
6 * This package is an SSL implementation written
7 * by Eric Young (eay@cryptsoft.com).
8 * The implementation was written so as to conform with Netscapes SSL.
10 * This library is free for commercial and non-commercial use as long as
11 * the following conditions are aheared to. The following conditions
12 * apply to all code found in this distribution, be it the RC4, RSA,
13 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
14 * included with this distribution is covered by the same copyright terms
15 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
17 * Copyright remains Eric Young's, and as such any Copyright notices in
18 * the code are not to be removed.
19 * If this package is used in a product, Eric Young should be given attribution
20 * as the author of the parts of the library used.
21 * This can be in the form of a textual message at program startup or
22 * in documentation (online or textual) provided with the package.
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
27 * 1. Redistributions of source code must retain the copyright
28 * notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in the
31 * documentation and/or other materials provided with the distribution.
32 * 3. All advertising materials mentioning features or use of this software
33 * must display the following acknowledgement:
34 * "This product includes cryptographic software written by
35 * Eric Young (eay@cryptsoft.com)"
36 * The word 'cryptographic' can be left out if the rouines from the library
37 * being used are not cryptographic related :-).
38 * 4. If you include any Windows specific code (or a derivative thereof) from
39 * the apps directory (application code) you must include an acknowledgement:
40 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
42 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54 * The licence and distribution terms for any publically available version or
55 * derivative of this code cannot be changed. i.e. this code cannot simply be
56 * copied and put under another distribution licence
57 * [including the GNU Public Licence.]
60 #include <openssl/opensslconf.h> /* for OPENSSL_NO_DH */
67 # include <openssl/bio.h>
68 # include <openssl/err.h>
69 # include <openssl/bn.h>
70 # include <openssl/dh.h>
71 # include <openssl/x509.h>
72 # include <openssl/pem.h>
78 * -inform arg - input format - default PEM (DER or PEM)
79 * -outform arg - output format - default PEM
80 * -in arg - input file - default stdin
81 * -out arg - output file - default stdout
82 * -check - check the parameters are ok
88 int MAIN(int, char **);
90 int MAIN(int argc
, char **argv
)
93 int i
, badops
= 0, text
= 0;
94 BIO
*in
= NULL
, *out
= NULL
;
95 int informat
, outformat
, check
= 0, noout
= 0, C
= 0, ret
= 1;
96 char *infile
, *outfile
, *prog
;
97 # ifndef OPENSSL_NO_ENGINE
104 if ((bio_err
= BIO_new(BIO_s_file())) != NULL
)
105 BIO_set_fp(bio_err
, stderr
, BIO_NOCLOSE
| BIO_FP_TEXT
);
107 if (!load_config(bio_err
, NULL
))
110 # ifndef OPENSSL_NO_ENGINE
115 informat
= FORMAT_PEM
;
116 outformat
= FORMAT_PEM
;
122 if (strcmp(*argv
, "-inform") == 0) {
125 informat
= str2fmt(*(++argv
));
126 } else if (strcmp(*argv
, "-outform") == 0) {
129 outformat
= str2fmt(*(++argv
));
130 } else if (strcmp(*argv
, "-in") == 0) {
134 } else if (strcmp(*argv
, "-out") == 0) {
139 # ifndef OPENSSL_NO_ENGINE
140 else if (strcmp(*argv
, "-engine") == 0) {
146 else if (strcmp(*argv
, "-check") == 0)
148 else if (strcmp(*argv
, "-text") == 0)
150 else if (strcmp(*argv
, "-C") == 0)
152 else if (strcmp(*argv
, "-noout") == 0)
155 BIO_printf(bio_err
, "unknown option %s\n", *argv
);
165 BIO_printf(bio_err
, "%s [options] <infile >outfile\n", prog
);
166 BIO_printf(bio_err
, "where options are\n");
167 BIO_printf(bio_err
, " -inform arg input format - one of DER PEM\n");
169 " -outform arg output format - one of DER PEM\n");
170 BIO_printf(bio_err
, " -in arg input file\n");
171 BIO_printf(bio_err
, " -out arg output file\n");
172 BIO_printf(bio_err
, " -check check the DH parameters\n");
174 " -text print a text form of the DH parameters\n");
175 BIO_printf(bio_err
, " -C Output C code\n");
176 BIO_printf(bio_err
, " -noout no output\n");
177 # ifndef OPENSSL_NO_ENGINE
179 " -engine e use engine e, possibly a hardware device.\n");
184 ERR_load_crypto_strings();
186 # ifndef OPENSSL_NO_ENGINE
187 setup_engine(bio_err
, engine
, 0);
190 in
= BIO_new(BIO_s_file());
191 out
= BIO_new(BIO_s_file());
192 if ((in
== NULL
) || (out
== NULL
)) {
193 ERR_print_errors(bio_err
);
198 BIO_set_fp(in
, stdin
, BIO_NOCLOSE
);
200 if (BIO_read_filename(in
, infile
) <= 0) {
205 if (outfile
== NULL
) {
206 BIO_set_fp(out
, stdout
, BIO_NOCLOSE
);
207 # ifdef OPENSSL_SYS_VMS
209 BIO
*tmpbio
= BIO_new(BIO_f_linebuffer());
210 out
= BIO_push(tmpbio
, out
);
214 if (BIO_write_filename(out
, outfile
) <= 0) {
220 if (informat
== FORMAT_ASN1
)
221 dh
= d2i_DHparams_bio(in
, NULL
);
222 else if (informat
== FORMAT_PEM
)
223 dh
= PEM_read_bio_DHparams(in
, NULL
, NULL
, NULL
);
225 BIO_printf(bio_err
, "bad input format specified\n");
229 BIO_printf(bio_err
, "unable to load DH parameters\n");
230 ERR_print_errors(bio_err
);
235 DHparams_print(out
, dh
);
238 BN_print(stdout
, dh
->p
);
240 BN_print(stdout
, dh
->g
);
243 printf("recommended private length=%ld\n", dh
->length
);
248 if (!DH_check(dh
, &i
)) {
249 ERR_print_errors(bio_err
);
252 if (i
& DH_CHECK_P_NOT_PRIME
)
253 printf("p value is not prime\n");
254 if (i
& DH_CHECK_P_NOT_SAFE_PRIME
)
255 printf("p value is not a safe prime\n");
256 if (i
& DH_UNABLE_TO_CHECK_GENERATOR
)
257 printf("unable to check the generator value\n");
258 if (i
& DH_NOT_SUITABLE_GENERATOR
)
259 printf("the g value is not a generator\n");
261 printf("DH parameters appear to be ok.\n");
267 len
= BN_num_bytes(dh
->p
);
268 bits
= BN_num_bits(dh
->p
);
269 data
= (unsigned char *)OPENSSL_malloc(len
);
271 perror("OPENSSL_malloc");
274 l
= BN_bn2bin(dh
->p
, data
);
275 printf("static unsigned char dh%d_p[]={", bits
);
276 for (i
= 0; i
< l
; i
++) {
279 printf("0x%02X,", data
[i
]);
283 l
= BN_bn2bin(dh
->g
, data
);
284 printf("static unsigned char dh%d_g[]={", bits
);
285 for (i
= 0; i
< l
; i
++) {
288 printf("0x%02X,", data
[i
]);
290 printf("\n\t};\n\n");
292 printf("DH *get_dh%d()\n\t{\n", bits
);
293 printf("\tDH *dh;\n\n");
294 printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");
295 printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",
297 printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",
299 printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");
300 printf("\t\treturn(NULL);\n");
301 printf("\treturn(dh);\n\t}\n");
306 if (outformat
== FORMAT_ASN1
)
307 i
= i2d_DHparams_bio(out
, dh
);
308 else if (outformat
== FORMAT_PEM
)
309 i
= PEM_write_bio_DHparams(out
, dh
);
311 BIO_printf(bio_err
, "bad output format specified for outfile\n");
315 BIO_printf(bio_err
, "unable to write DH parameters\n");
316 ERR_print_errors(bio_err
);
331 #else /* !OPENSSL_NO_DH */
334 static void *dummy
= &dummy
;