1 /* apps/genpkey.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2006
4 */
5 /* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58 #include <stdio.h>
59 #include <string.h>
60 #include "apps.h"
61 #include <openssl/pem.h>
62 #include <openssl/err.h>
63 #include <openssl/evp.h>
64 #ifndef OPENSSL_NO_ENGINE
65 #include <openssl/engine.h>
66 #endif
67
68 static int init_keygen_file(BIO *err, EVP_PKEY_CTX **pctx,
69 const char *file, ENGINE *e);
70 static int genpkey_cb(EVP_PKEY_CTX *ctx);
71
72 #define PROG genpkey_main
73
74 int MAIN(int, char **);
75
MAIN(int argc,char ** argv)76 int MAIN(int argc, char **argv)
77 {
78 ENGINE *e = NULL;
79 char **args, *outfile = NULL;
80 char *passarg = NULL;
81 BIO *in = NULL, *out = NULL;
82 const EVP_CIPHER *cipher = NULL;
83 int outformat;
84 int text = 0;
85 EVP_PKEY *pkey=NULL;
86 EVP_PKEY_CTX *ctx = NULL;
87 char *pass = NULL;
88 int badarg = 0;
89 int ret = 1, rv;
90
91 int do_param = 0;
92
93 if (bio_err == NULL)
94 bio_err = BIO_new_fp (stderr, BIO_NOCLOSE);
95
96 if (!load_config(bio_err, NULL))
97 goto end;
98
99 outformat=FORMAT_PEM;
100
101 ERR_load_crypto_strings();
102 OpenSSL_add_all_algorithms();
103 args = argv + 1;
104 while (!badarg && *args && *args[0] == '-')
105 {
106 if (!strcmp(*args,"-outform"))
107 {
108 if (args[1])
109 {
110 args++;
111 outformat=str2fmt(*args);
112 }
113 else badarg = 1;
114 }
115 else if (!strcmp(*args,"-pass"))
116 {
117 if (!args[1]) goto bad;
118 passarg= *(++args);
119 }
120 #ifndef OPENSSL_NO_ENGINE
121 else if (strcmp(*args,"-engine") == 0)
122 {
123 if (!args[1])
124 goto bad;
125 e = setup_engine(bio_err, *(++args), 0);
126 }
127 #endif
128 else if (!strcmp (*args, "-paramfile"))
129 {
130 if (!args[1])
131 goto bad;
132 args++;
133 if (do_param == 1)
134 goto bad;
135 if (!init_keygen_file(bio_err, &ctx, *args, e))
136 goto end;
137 }
138 else if (!strcmp (*args, "-out"))
139 {
140 if (args[1])
141 {
142 args++;
143 outfile = *args;
144 }
145 else badarg = 1;
146 }
147 else if (strcmp(*args,"-algorithm") == 0)
148 {
149 if (!args[1])
150 goto bad;
151 if (!init_gen_str(bio_err, &ctx, *(++args),e, do_param))
152 goto end;
153 }
154 else if (strcmp(*args,"-pkeyopt") == 0)
155 {
156 if (!args[1])
157 goto bad;
158 if (!ctx)
159 {
160 BIO_puts(bio_err, "No keytype specified\n");
161 goto bad;
162 }
163 else if (pkey_ctrl_string(ctx, *(++args)) <= 0)
164 {
165 BIO_puts(bio_err, "parameter setting error\n");
166 ERR_print_errors(bio_err);
167 goto end;
168 }
169 }
170 else if (strcmp(*args,"-genparam") == 0)
171 {
172 if (ctx)
173 goto bad;
174 do_param = 1;
175 }
176 else if (strcmp(*args,"-text") == 0)
177 text=1;
178 else
179 {
180 cipher = EVP_get_cipherbyname(*args + 1);
181 if (!cipher)
182 {
183 BIO_printf(bio_err, "Unknown cipher %s\n",
184 *args + 1);
185 badarg = 1;
186 }
187 if (do_param == 1)
188 badarg = 1;
189 }
190 args++;
191 }
192
193 if (!ctx)
194 badarg = 1;
195
196 if (badarg)
197 {
198 bad:
199 BIO_printf(bio_err, "Usage: genpkey [options]\n");
200 BIO_printf(bio_err, "where options may be\n");
201 BIO_printf(bio_err, "-out file output file\n");
202 BIO_printf(bio_err, "-outform X output format (DER or PEM)\n");
203 BIO_printf(bio_err, "-pass arg output file pass phrase source\n");
204 BIO_printf(bio_err, "-<cipher> use cipher <cipher> to encrypt the key\n");
205 #ifndef OPENSSL_NO_ENGINE
206 BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n");
207 #endif
208 BIO_printf(bio_err, "-paramfile file parameters file\n");
209 BIO_printf(bio_err, "-algorithm alg the public key algorithm\n");
210 BIO_printf(bio_err, "-pkeyopt opt:value set the public key algorithm option <opt>\n"
211 " to value <value>\n");
212 BIO_printf(bio_err, "-genparam generate parameters, not key\n");
213 BIO_printf(bio_err, "-text print the in text\n");
214 BIO_printf(bio_err, "NB: options order may be important! See the manual page.\n");
215 goto end;
216 }
217
218 if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
219 {
220 BIO_puts(bio_err, "Error getting password\n");
221 goto end;
222 }
223
224 if (outfile)
225 {
226 if (!(out = BIO_new_file (outfile, "wb")))
227 {
228 BIO_printf(bio_err,
229 "Can't open output file %s\n", outfile);
230 goto end;
231 }
232 }
233 else
234 {
235 out = BIO_new_fp (stdout, BIO_NOCLOSE);
236 #ifdef OPENSSL_SYS_VMS
237 {
238 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
239 out = BIO_push(tmpbio, out);
240 }
241 #endif
242 }
243
244 EVP_PKEY_CTX_set_cb(ctx, genpkey_cb);
245 EVP_PKEY_CTX_set_app_data(ctx, bio_err);
246
247 if (do_param)
248 {
249 if (EVP_PKEY_paramgen(ctx, &pkey) <= 0)
250 {
251 BIO_puts(bio_err, "Error generating parameters\n");
252 ERR_print_errors(bio_err);
253 goto end;
254 }
255 }
256 else
257 {
258 if (EVP_PKEY_keygen(ctx, &pkey) <= 0)
259 {
260 BIO_puts(bio_err, "Error generating key\n");
261 ERR_print_errors(bio_err);
262 goto end;
263 }
264 }
265
266 if (do_param)
267 rv = PEM_write_bio_Parameters(out, pkey);
268 else if (outformat == FORMAT_PEM)
269 rv = PEM_write_bio_PrivateKey(out, pkey, cipher, NULL, 0,
270 NULL, pass);
271 else if (outformat == FORMAT_ASN1)
272 rv = i2d_PrivateKey_bio(out, pkey);
273 else
274 {
275 BIO_printf(bio_err, "Bad format specified for key\n");
276 goto end;
277 }
278
279 if (rv <= 0)
280 {
281 BIO_puts(bio_err, "Error writing key\n");
282 ERR_print_errors(bio_err);
283 }
284
285 if (text)
286 {
287 if (do_param)
288 rv = EVP_PKEY_print_params(out, pkey, 0, NULL);
289 else
290 rv = EVP_PKEY_print_private(out, pkey, 0, NULL);
291
292 if (rv <= 0)
293 {
294 BIO_puts(bio_err, "Error printing key\n");
295 ERR_print_errors(bio_err);
296 }
297 }
298
299 ret = 0;
300
301 end:
302 if (pkey)
303 EVP_PKEY_free(pkey);
304 if (ctx)
305 EVP_PKEY_CTX_free(ctx);
306 if (out)
307 BIO_free_all(out);
308 BIO_free(in);
309 if (pass)
310 OPENSSL_free(pass);
311
312 return ret;
313 }
314
init_keygen_file(BIO * err,EVP_PKEY_CTX ** pctx,const char * file,ENGINE * e)315 static int init_keygen_file(BIO *err, EVP_PKEY_CTX **pctx,
316 const char *file, ENGINE *e)
317 {
318 BIO *pbio;
319 EVP_PKEY *pkey = NULL;
320 EVP_PKEY_CTX *ctx = NULL;
321 if (*pctx)
322 {
323 BIO_puts(err, "Parameters already set!\n");
324 return 0;
325 }
326
327 pbio = BIO_new_file(file, "r");
328 if (!pbio)
329 {
330 BIO_printf(err, "Can't open parameter file %s\n", file);
331 return 0;
332 }
333
334 pkey = PEM_read_bio_Parameters(pbio, NULL);
335 BIO_free(pbio);
336
337 if (!pkey)
338 {
339 BIO_printf(bio_err, "Error reading parameter file %s\n", file);
340 return 0;
341 }
342
343 ctx = EVP_PKEY_CTX_new(pkey, e);
344 if (!ctx)
345 goto err;
346 if (EVP_PKEY_keygen_init(ctx) <= 0)
347 goto err;
348 EVP_PKEY_free(pkey);
349 *pctx = ctx;
350 return 1;
351
352 err:
353 BIO_puts(err, "Error initializing context\n");
354 ERR_print_errors(err);
355 if (ctx)
356 EVP_PKEY_CTX_free(ctx);
357 if (pkey)
358 EVP_PKEY_free(pkey);
359 return 0;
360
361 }
362
init_gen_str(BIO * err,EVP_PKEY_CTX ** pctx,const char * algname,ENGINE * e,int do_param)363 int init_gen_str(BIO *err, EVP_PKEY_CTX **pctx,
364 const char *algname, ENGINE *e, int do_param)
365 {
366 EVP_PKEY_CTX *ctx = NULL;
367 const EVP_PKEY_ASN1_METHOD *ameth;
368 ENGINE *tmpeng = NULL;
369 int pkey_id;
370
371 if (*pctx)
372 {
373 BIO_puts(err, "Algorithm already set!\n");
374 return 0;
375 }
376
377 ameth = EVP_PKEY_asn1_find_str(&tmpeng, algname, -1);
378
379 #ifndef OPENSSL_NO_ENGINE
380 if (!ameth && e)
381 ameth = ENGINE_get_pkey_asn1_meth_str(e, algname, -1);
382 #endif
383
384 if (!ameth)
385 {
386 BIO_printf(bio_err, "Algorithm %s not found\n", algname);
387 return 0;
388 }
389
390 ERR_clear_error();
391
392 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
393 #ifndef OPENSSL_NO_ENGINE
394 if (tmpeng)
395 ENGINE_finish(tmpeng);
396 #endif
397 ctx = EVP_PKEY_CTX_new_id(pkey_id, e);
398
399 if (!ctx)
400 goto err;
401 if (do_param)
402 {
403 if (EVP_PKEY_paramgen_init(ctx) <= 0)
404 goto err;
405 }
406 else
407 {
408 if (EVP_PKEY_keygen_init(ctx) <= 0)
409 goto err;
410 }
411
412 *pctx = ctx;
413 return 1;
414
415 err:
416 BIO_printf(err, "Error initializing %s context\n", algname);
417 ERR_print_errors(err);
418 if (ctx)
419 EVP_PKEY_CTX_free(ctx);
420 return 0;
421
422 }
423
genpkey_cb(EVP_PKEY_CTX * ctx)424 static int genpkey_cb(EVP_PKEY_CTX *ctx)
425 {
426 char c='*';
427 BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
428 int p;
429 p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
430 if (p == 0) c='.';
431 if (p == 1) c='+';
432 if (p == 2) c='*';
433 if (p == 3) c='\n';
434 BIO_write(b,&c,1);
435 (void)BIO_flush(b);
436 #ifdef LINT
437 p=n;
438 #endif
439 return 1;
440 }
441