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2a99e8b9 | 1 | /* apps/dhparam.c */ |
09483c58 DSH |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
3 | * All rights reserved. | |
4 | * | |
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. | |
40720ce3 | 8 | * |
09483c58 DSH |
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). | |
40720ce3 | 15 | * |
09483c58 DSH |
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. | |
40720ce3 | 22 | * |
09483c58 DSH |
23 | * Redistribution and use in source and binary forms, with or without |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
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 :-). | |
40720ce3 | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
09483c58 DSH |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40720ce3 | 40 | * |
09483c58 DSH |
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 | |
51 | * SUCH DAMAGE. | |
40720ce3 | 52 | * |
09483c58 DSH |
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.] | |
57 | */ | |
41918458 BM |
58 | /* ==================================================================== |
59 | * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. | |
60 | * | |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
40720ce3 | 66 | * notice, this list of conditions and the following disclaimer. |
41918458 BM |
67 | * |
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 | |
71 | * distribution. | |
72 | * | |
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/)" | |
77 | * | |
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. | |
82 | * | |
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. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
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 | * ==================================================================== | |
105 | * | |
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). | |
109 | * | |
110 | */ | |
09483c58 | 111 | |
40720ce3 | 112 | #include <openssl/opensslconf.h> /* for OPENSSL_NO_DH */ |
cf1b7d96 | 113 | #ifndef OPENSSL_NO_DH |
40720ce3 MC |
114 | # include <stdio.h> |
115 | # include <stdlib.h> | |
116 | # include <time.h> | |
117 | # include <string.h> | |
118 | # include "apps.h" | |
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> | |
125 | ||
126 | # ifndef OPENSSL_NO_DSA | |
127 | # include <openssl/dsa.h> | |
128 | # endif | |
129 | ||
130 | # undef PROG | |
131 | # define PROG dhparam_main | |
132 | ||
133 | # define DEFBITS 512 | |
09483c58 | 134 | |
b558c8d5 | 135 | /*- |
40720ce3 | 136 | * -inform arg - input format - default PEM (DER or PEM) |
09483c58 | 137 | * -outform arg - output format - default PEM |
40720ce3 MC |
138 | * -in arg - input file - default stdin |
139 | * -out arg - output file - default stdout | |
41918458 | 140 | * -dsaparam - read or generate DSA parameters, convert to DH |
40720ce3 | 141 | * -check - check the parameters are ok |
09483c58 DSH |
142 | * -noout |
143 | * -text | |
144 | * -C | |
145 | */ | |
146 | ||
2aaec9cc | 147 | static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb); |
09483c58 | 148 | |
667ac4ec RE |
149 | int MAIN(int, char **); |
150 | ||
09483c58 | 151 | int MAIN(int argc, char **argv) |
40720ce3 MC |
152 | { |
153 | DH *dh = NULL; | |
154 | int i, badops = 0, text = 0; | |
155 | # ifndef OPENSSL_NO_DSA | |
156 | int dsaparam = 0; | |
157 | # endif | |
158 | BIO *in = NULL, *out = NULL; | |
159 | int informat, outformat, check = 0, noout = 0, C = 0, ret = 1; | |
160 | char *infile, *outfile, *prog; | |
161 | char *inrand = NULL; | |
162 | # ifndef OPENSSL_NO_ENGINE | |
163 | char *engine = NULL; | |
164 | # endif | |
165 | int num = 0, g = 0; | |
166 | ||
167 | apps_startup(); | |
168 | ||
169 | if (bio_err == NULL) | |
170 | if ((bio_err = BIO_new(BIO_s_file())) != NULL) | |
171 | BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); | |
172 | ||
173 | if (!load_config(bio_err, NULL)) | |
174 | goto end; | |
175 | ||
176 | infile = NULL; | |
177 | outfile = NULL; | |
178 | informat = FORMAT_PEM; | |
179 | outformat = FORMAT_PEM; | |
180 | ||
181 | prog = argv[0]; | |
182 | argc--; | |
183 | argv++; | |
184 | while (argc >= 1) { | |
185 | if (strcmp(*argv, "-inform") == 0) { | |
186 | if (--argc < 1) | |
187 | goto bad; | |
188 | informat = str2fmt(*(++argv)); | |
189 | } else if (strcmp(*argv, "-outform") == 0) { | |
190 | if (--argc < 1) | |
191 | goto bad; | |
192 | outformat = str2fmt(*(++argv)); | |
193 | } else if (strcmp(*argv, "-in") == 0) { | |
194 | if (--argc < 1) | |
195 | goto bad; | |
196 | infile = *(++argv); | |
197 | } else if (strcmp(*argv, "-out") == 0) { | |
198 | if (--argc < 1) | |
199 | goto bad; | |
200 | outfile = *(++argv); | |
201 | } | |
202 | # ifndef OPENSSL_NO_ENGINE | |
203 | else if (strcmp(*argv, "-engine") == 0) { | |
204 | if (--argc < 1) | |
205 | goto bad; | |
206 | engine = *(++argv); | |
207 | } | |
208 | # endif | |
209 | else if (strcmp(*argv, "-check") == 0) | |
210 | check = 1; | |
211 | else if (strcmp(*argv, "-text") == 0) | |
212 | text = 1; | |
213 | # ifndef OPENSSL_NO_DSA | |
214 | else if (strcmp(*argv, "-dsaparam") == 0) | |
215 | dsaparam = 1; | |
216 | # endif | |
217 | else if (strcmp(*argv, "-C") == 0) | |
218 | C = 1; | |
219 | else if (strcmp(*argv, "-noout") == 0) | |
220 | noout = 1; | |
221 | else if (strcmp(*argv, "-2") == 0) | |
222 | g = 2; | |
223 | else if (strcmp(*argv, "-5") == 0) | |
224 | g = 5; | |
225 | else if (strcmp(*argv, "-rand") == 0) { | |
226 | if (--argc < 1) | |
227 | goto bad; | |
228 | inrand = *(++argv); | |
229 | } else if (((sscanf(*argv, "%d", &num) == 0) || (num <= 0))) | |
230 | goto bad; | |
231 | argv++; | |
232 | argc--; | |
233 | } | |
234 | ||
235 | if (badops) { | |
236 | bad: | |
237 | BIO_printf(bio_err, "%s [options] [numbits]\n", prog); | |
238 | BIO_printf(bio_err, "where options are\n"); | |
239 | BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n"); | |
240 | BIO_printf(bio_err, | |
241 | " -outform arg output format - one of DER PEM\n"); | |
242 | BIO_printf(bio_err, " -in arg input file\n"); | |
243 | BIO_printf(bio_err, " -out arg output file\n"); | |
244 | # ifndef OPENSSL_NO_DSA | |
245 | BIO_printf(bio_err, | |
246 | " -dsaparam read or generate DSA parameters, convert to DH\n"); | |
247 | # endif | |
248 | BIO_printf(bio_err, " -check check the DH parameters\n"); | |
249 | BIO_printf(bio_err, | |
250 | " -text print a text form of the DH parameters\n"); | |
251 | BIO_printf(bio_err, " -C Output C code\n"); | |
252 | BIO_printf(bio_err, | |
253 | " -2 generate parameters using 2 as the generator value\n"); | |
254 | BIO_printf(bio_err, | |
255 | " -5 generate parameters using 5 as the generator value\n"); | |
256 | BIO_printf(bio_err, | |
257 | " numbits number of bits in to generate (default 512)\n"); | |
258 | # ifndef OPENSSL_NO_ENGINE | |
259 | BIO_printf(bio_err, | |
260 | " -engine e use engine e, possibly a hardware device.\n"); | |
261 | # endif | |
262 | BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, | |
263 | LIST_SEPARATOR_CHAR); | |
264 | BIO_printf(bio_err, | |
265 | " - load the file (or the files in the directory) into\n"); | |
266 | BIO_printf(bio_err, " the random number generator\n"); | |
267 | BIO_printf(bio_err, " -noout no output\n"); | |
268 | goto end; | |
269 | } | |
270 | ||
271 | ERR_load_crypto_strings(); | |
272 | ||
273 | # ifndef OPENSSL_NO_ENGINE | |
274 | setup_engine(bio_err, engine, 0); | |
275 | # endif | |
276 | ||
277 | if (g && !num) | |
278 | num = DEFBITS; | |
279 | ||
280 | # ifndef OPENSSL_NO_DSA | |
281 | if (dsaparam) { | |
282 | if (g) { | |
283 | BIO_printf(bio_err, | |
284 | "generator may not be chosen for DSA parameters\n"); | |
285 | goto end; | |
286 | } | |
287 | } else | |
288 | # endif | |
289 | { | |
290 | /* DH parameters */ | |
291 | if (num && !g) | |
292 | g = 2; | |
293 | } | |
294 | ||
295 | if (num) { | |
296 | ||
297 | BN_GENCB cb; | |
298 | BN_GENCB_set(&cb, dh_cb, bio_err); | |
299 | if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) { | |
300 | BIO_printf(bio_err, | |
301 | "warning, not much extra random data, consider using the -rand option\n"); | |
302 | } | |
303 | if (inrand != NULL) | |
304 | BIO_printf(bio_err, "%ld semi-random bytes loaded\n", | |
305 | app_RAND_load_files(inrand)); | |
306 | ||
307 | # ifndef OPENSSL_NO_DSA | |
308 | if (dsaparam) { | |
309 | DSA *dsa = DSA_new(); | |
310 | ||
311 | BIO_printf(bio_err, | |
312 | "Generating DSA parameters, %d bit long prime\n", num); | |
313 | if (!dsa | |
314 | || !DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, | |
315 | &cb)) { | |
316 | if (dsa) | |
317 | DSA_free(dsa); | |
318 | ERR_print_errors(bio_err); | |
319 | goto end; | |
320 | } | |
321 | ||
322 | dh = DSA_dup_DH(dsa); | |
323 | DSA_free(dsa); | |
324 | if (dh == NULL) { | |
325 | ERR_print_errors(bio_err); | |
326 | goto end; | |
327 | } | |
328 | } else | |
329 | # endif | |
330 | { | |
331 | dh = DH_new(); | |
332 | BIO_printf(bio_err, | |
333 | "Generating DH parameters, %d bit long safe prime, generator %d\n", | |
334 | num, g); | |
335 | BIO_printf(bio_err, "This is going to take a long time\n"); | |
336 | if (!dh || !DH_generate_parameters_ex(dh, num, g, &cb)) { | |
337 | ERR_print_errors(bio_err); | |
338 | goto end; | |
339 | } | |
340 | } | |
341 | ||
342 | app_RAND_write_file(NULL, bio_err); | |
343 | } else { | |
344 | ||
345 | in = BIO_new(BIO_s_file()); | |
346 | if (in == NULL) { | |
347 | ERR_print_errors(bio_err); | |
348 | goto end; | |
349 | } | |
350 | if (infile == NULL) | |
351 | BIO_set_fp(in, stdin, BIO_NOCLOSE); | |
352 | else { | |
353 | if (BIO_read_filename(in, infile) <= 0) { | |
354 | perror(infile); | |
355 | goto end; | |
356 | } | |
357 | } | |
358 | ||
359 | if (informat != FORMAT_ASN1 && informat != FORMAT_PEM) { | |
360 | BIO_printf(bio_err, "bad input format specified\n"); | |
361 | goto end; | |
362 | } | |
363 | # ifndef OPENSSL_NO_DSA | |
364 | if (dsaparam) { | |
365 | DSA *dsa; | |
366 | ||
367 | if (informat == FORMAT_ASN1) | |
368 | dsa = d2i_DSAparams_bio(in, NULL); | |
369 | else /* informat == FORMAT_PEM */ | |
370 | dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL); | |
371 | ||
372 | if (dsa == NULL) { | |
373 | BIO_printf(bio_err, "unable to load DSA parameters\n"); | |
374 | ERR_print_errors(bio_err); | |
375 | goto end; | |
376 | } | |
377 | ||
378 | dh = DSA_dup_DH(dsa); | |
379 | DSA_free(dsa); | |
380 | if (dh == NULL) { | |
381 | ERR_print_errors(bio_err); | |
382 | goto end; | |
383 | } | |
384 | } else | |
385 | # endif | |
386 | { | |
387 | if (informat == FORMAT_ASN1) | |
388 | dh = d2i_DHparams_bio(in, NULL); | |
389 | else /* informat == FORMAT_PEM */ | |
390 | dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL); | |
391 | ||
392 | if (dh == NULL) { | |
393 | BIO_printf(bio_err, "unable to load DH parameters\n"); | |
394 | ERR_print_errors(bio_err); | |
395 | goto end; | |
396 | } | |
397 | } | |
398 | ||
399 | /* dh != NULL */ | |
400 | } | |
401 | ||
402 | out = BIO_new(BIO_s_file()); | |
403 | if (out == NULL) { | |
404 | ERR_print_errors(bio_err); | |
405 | goto end; | |
406 | } | |
407 | if (outfile == NULL) { | |
408 | BIO_set_fp(out, stdout, BIO_NOCLOSE); | |
409 | # ifdef OPENSSL_SYS_VMS | |
410 | { | |
411 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); | |
412 | out = BIO_push(tmpbio, out); | |
413 | } | |
414 | # endif | |
415 | } else { | |
416 | if (BIO_write_filename(out, outfile) <= 0) { | |
417 | perror(outfile); | |
418 | goto end; | |
419 | } | |
420 | } | |
421 | ||
422 | if (text) { | |
423 | DHparams_print(out, dh); | |
424 | } | |
425 | ||
426 | if (check) { | |
427 | if (!DH_check(dh, &i)) { | |
428 | ERR_print_errors(bio_err); | |
429 | goto end; | |
430 | } | |
431 | if (i & DH_CHECK_P_NOT_PRIME) | |
432 | printf("p value is not prime\n"); | |
433 | if (i & DH_CHECK_P_NOT_SAFE_PRIME) | |
434 | printf("p value is not a safe prime\n"); | |
435 | if (i & DH_UNABLE_TO_CHECK_GENERATOR) | |
436 | printf("unable to check the generator value\n"); | |
437 | if (i & DH_NOT_SUITABLE_GENERATOR) | |
438 | printf("the g value is not a generator\n"); | |
439 | if (i == 0) | |
440 | printf("DH parameters appear to be ok.\n"); | |
441 | } | |
442 | if (C) { | |
443 | unsigned char *data; | |
444 | int len, l, bits; | |
445 | ||
446 | len = BN_num_bytes(dh->p); | |
447 | bits = BN_num_bits(dh->p); | |
448 | data = (unsigned char *)OPENSSL_malloc(len); | |
449 | if (data == NULL) { | |
450 | perror("OPENSSL_malloc"); | |
451 | goto end; | |
452 | } | |
453 | printf("#ifndef HEADER_DH_H\n" | |
454 | "#include <openssl/dh.h>\n" "#endif\n"); | |
455 | printf("DH *get_dh%d()\n\t{\n", bits); | |
456 | ||
457 | l = BN_bn2bin(dh->p, data); | |
458 | printf("\tstatic unsigned char dh%d_p[]={", bits); | |
459 | for (i = 0; i < l; i++) { | |
460 | if ((i % 12) == 0) | |
461 | printf("\n\t\t"); | |
462 | printf("0x%02X,", data[i]); | |
463 | } | |
464 | printf("\n\t\t};\n"); | |
465 | ||
466 | l = BN_bn2bin(dh->g, data); | |
467 | printf("\tstatic unsigned char dh%d_g[]={", bits); | |
468 | for (i = 0; i < l; i++) { | |
469 | if ((i % 12) == 0) | |
470 | printf("\n\t\t"); | |
471 | printf("0x%02X,", data[i]); | |
472 | } | |
473 | printf("\n\t\t};\n"); | |
474 | ||
475 | printf("\tDH *dh;\n\n"); | |
476 | printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n"); | |
477 | printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n", | |
478 | bits, bits); | |
479 | printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n", | |
480 | bits, bits); | |
481 | printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n"); | |
482 | printf("\t\t{ DH_free(dh); return(NULL); }\n"); | |
483 | if (dh->length) | |
484 | printf("\tdh->length = %ld;\n", dh->length); | |
485 | printf("\treturn(dh);\n\t}\n"); | |
486 | OPENSSL_free(data); | |
487 | } | |
488 | ||
489 | if (!noout) { | |
490 | if (outformat == FORMAT_ASN1) | |
491 | i = i2d_DHparams_bio(out, dh); | |
492 | else if (outformat == FORMAT_PEM) | |
493 | i = PEM_write_bio_DHparams(out, dh); | |
494 | else { | |
495 | BIO_printf(bio_err, "bad output format specified for outfile\n"); | |
496 | goto end; | |
497 | } | |
498 | if (!i) { | |
499 | BIO_printf(bio_err, "unable to write DH parameters\n"); | |
500 | ERR_print_errors(bio_err); | |
501 | goto end; | |
502 | } | |
503 | } | |
504 | ret = 0; | |
505 | end: | |
506 | if (in != NULL) | |
507 | BIO_free(in); | |
508 | if (out != NULL) | |
509 | BIO_free_all(out); | |
510 | if (dh != NULL) | |
511 | DH_free(dh); | |
512 | apps_shutdown(); | |
513 | OPENSSL_EXIT(ret); | |
514 | } | |
09483c58 | 515 | |
41918458 | 516 | /* dh_cb is identical to dsa_cb in apps/dsaparam.c */ |
2aaec9cc | 517 | static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb) |
40720ce3 MC |
518 | { |
519 | char c = '*'; | |
520 | ||
521 | if (p == 0) | |
522 | c = '.'; | |
523 | if (p == 1) | |
524 | c = '+'; | |
525 | if (p == 2) | |
526 | c = '*'; | |
527 | if (p == 3) | |
528 | c = '\n'; | |
529 | BIO_write(cb->arg, &c, 1); | |
530 | (void)BIO_flush(cb->arg); | |
531 | # ifdef LINT | |
532 | p = n; | |
533 | # endif | |
534 | return 1; | |
535 | } | |
09483c58 DSH |
536 | |
537 | #endif |