xref: /freebsd/crypto/openssl/apps/ec.c (revision aa0a1e58f0189b0fde359a8bda032887e72057fa)
1 /* apps/ec.c */
2 /*
3  * Written by Nils Larsch for the OpenSSL project.
4  */
5 /* ====================================================================
6  * Copyright (c) 1998-2005 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  *    openssl-core@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 
59 #include <openssl/opensslconf.h>
60 #ifndef OPENSSL_NO_EC
61 #include <stdio.h>
62 #include <stdlib.h>
63 #include <string.h>
64 #include "apps.h"
65 #include <openssl/bio.h>
66 #include <openssl/err.h>
67 #include <openssl/evp.h>
68 #include <openssl/pem.h>
69 
70 #undef PROG
71 #define PROG	ec_main
72 
73 /* -inform arg    - input format - default PEM (one of DER, NET or PEM)
74  * -outform arg   - output format - default PEM
75  * -in arg        - input file - default stdin
76  * -out arg       - output file - default stdout
77  * -des           - encrypt output if PEM format with DES in cbc mode
78  * -text          - print a text version
79  * -param_out     - print the elliptic curve parameters
80  * -conv_form arg - specifies the point encoding form
81  * -param_enc arg - specifies the parameter encoding
82  */
83 
84 int MAIN(int, char **);
85 
86 int MAIN(int argc, char **argv)
87 {
88 	int 	ret = 1;
89 	EC_KEY 	*eckey = NULL;
90 	const EC_GROUP *group;
91 	int 	i, badops = 0;
92 	const EVP_CIPHER *enc = NULL;
93 	BIO 	*in = NULL, *out = NULL;
94 	int 	informat, outformat, text=0, noout=0;
95 	int  	pubin = 0, pubout = 0, param_out = 0;
96 	char 	*infile, *outfile, *prog, *engine;
97 	char 	*passargin = NULL, *passargout = NULL;
98 	char 	*passin = NULL, *passout = NULL;
99 	point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
100 	int	new_form = 0;
101 	int	asn1_flag = OPENSSL_EC_NAMED_CURVE;
102 	int 	new_asn1_flag = 0;
103 
104 	apps_startup();
105 
106 	if (bio_err == NULL)
107 		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
108 			BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
109 
110 	if (!load_config(bio_err, NULL))
111 		goto end;
112 
113 	engine = NULL;
114 	infile = NULL;
115 	outfile = NULL;
116 	informat = FORMAT_PEM;
117 	outformat = FORMAT_PEM;
118 
119 	prog = argv[0];
120 	argc--;
121 	argv++;
122 	while (argc >= 1)
123 		{
124 		if (strcmp(*argv,"-inform") == 0)
125 			{
126 			if (--argc < 1) goto bad;
127 			informat=str2fmt(*(++argv));
128 			}
129 		else if (strcmp(*argv,"-outform") == 0)
130 			{
131 			if (--argc < 1) goto bad;
132 			outformat=str2fmt(*(++argv));
133 			}
134 		else if (strcmp(*argv,"-in") == 0)
135 			{
136 			if (--argc < 1) goto bad;
137 			infile= *(++argv);
138 			}
139 		else if (strcmp(*argv,"-out") == 0)
140 			{
141 			if (--argc < 1) goto bad;
142 			outfile= *(++argv);
143 			}
144 		else if (strcmp(*argv,"-passin") == 0)
145 			{
146 			if (--argc < 1) goto bad;
147 			passargin= *(++argv);
148 			}
149 		else if (strcmp(*argv,"-passout") == 0)
150 			{
151 			if (--argc < 1) goto bad;
152 			passargout= *(++argv);
153 			}
154 		else if (strcmp(*argv, "-engine") == 0)
155 			{
156 			if (--argc < 1) goto bad;
157 			engine= *(++argv);
158 			}
159 		else if (strcmp(*argv, "-noout") == 0)
160 			noout = 1;
161 		else if (strcmp(*argv, "-text") == 0)
162 			text = 1;
163 		else if (strcmp(*argv, "-conv_form") == 0)
164 			{
165 			if (--argc < 1)
166 				goto bad;
167 			++argv;
168 			new_form = 1;
169 			if (strcmp(*argv, "compressed") == 0)
170 				form = POINT_CONVERSION_COMPRESSED;
171 			else if (strcmp(*argv, "uncompressed") == 0)
172 				form = POINT_CONVERSION_UNCOMPRESSED;
173 			else if (strcmp(*argv, "hybrid") == 0)
174 				form = POINT_CONVERSION_HYBRID;
175 			else
176 				goto bad;
177 			}
178 		else if (strcmp(*argv, "-param_enc") == 0)
179 			{
180 			if (--argc < 1)
181 				goto bad;
182 			++argv;
183 			new_asn1_flag = 1;
184 			if (strcmp(*argv, "named_curve") == 0)
185 				asn1_flag = OPENSSL_EC_NAMED_CURVE;
186 			else if (strcmp(*argv, "explicit") == 0)
187 				asn1_flag = 0;
188 			else
189 				goto bad;
190 			}
191 		else if (strcmp(*argv, "-param_out") == 0)
192 			param_out = 1;
193 		else if (strcmp(*argv, "-pubin") == 0)
194 			pubin=1;
195 		else if (strcmp(*argv, "-pubout") == 0)
196 			pubout=1;
197 		else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
198 			{
199 			BIO_printf(bio_err, "unknown option %s\n", *argv);
200 			badops=1;
201 			break;
202 			}
203 		argc--;
204 		argv++;
205 		}
206 
207 	if (badops)
208 		{
209 bad:
210 		BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
211 		BIO_printf(bio_err, "where options are\n");
212 		BIO_printf(bio_err, " -inform arg     input format - "
213 				"DER or PEM\n");
214 		BIO_printf(bio_err, " -outform arg    output format - "
215 				"DER or PEM\n");
216 		BIO_printf(bio_err, " -in arg         input file\n");
217 		BIO_printf(bio_err, " -passin arg     input file pass "
218 				"phrase source\n");
219 		BIO_printf(bio_err, " -out arg        output file\n");
220 		BIO_printf(bio_err, " -passout arg    output file pass "
221 				"phrase source\n");
222 		BIO_printf(bio_err, " -engine e       use engine e, "
223 				"possibly a hardware device.\n");
224 		BIO_printf(bio_err, " -des            encrypt PEM output, "
225 				"instead of 'des' every other \n"
226 				"                 cipher "
227 				"supported by OpenSSL can be used\n");
228 		BIO_printf(bio_err, " -text           print the key\n");
229 		BIO_printf(bio_err, " -noout          don't print key out\n");
230 		BIO_printf(bio_err, " -param_out      print the elliptic "
231 				"curve parameters\n");
232 		BIO_printf(bio_err, " -conv_form arg  specifies the "
233 				"point conversion form \n");
234 		BIO_printf(bio_err, "                 possible values:"
235 				" compressed\n");
236 		BIO_printf(bio_err, "                                 "
237 				" uncompressed (default)\n");
238 		BIO_printf(bio_err, "                                  "
239 				" hybrid\n");
240 		BIO_printf(bio_err, " -param_enc arg  specifies the way"
241 				" the ec parameters are encoded\n");
242 		BIO_printf(bio_err, "                 in the asn1 der "
243 				"encoding\n");
244 		BIO_printf(bio_err, "                 possible values:"
245 				" named_curve (default)\n");
246 		BIO_printf(bio_err,"                                  "
247 				"explicit\n");
248 		goto end;
249 		}
250 
251 	ERR_load_crypto_strings();
252 
253 #ifndef OPENSSL_NO_ENGINE
254         setup_engine(bio_err, engine, 0);
255 #endif
256 
257 	if(!app_passwd(bio_err, passargin, passargout, &passin, &passout))
258 		{
259 		BIO_printf(bio_err, "Error getting passwords\n");
260 		goto end;
261 		}
262 
263 	in = BIO_new(BIO_s_file());
264 	out = BIO_new(BIO_s_file());
265 	if ((in == NULL) || (out == NULL))
266 		{
267 		ERR_print_errors(bio_err);
268 		goto end;
269 		}
270 
271 	if (infile == NULL)
272 		BIO_set_fp(in, stdin, BIO_NOCLOSE);
273 	else
274 		{
275 		if (BIO_read_filename(in, infile) <= 0)
276 			{
277 			perror(infile);
278 			goto end;
279 			}
280 		}
281 
282 	BIO_printf(bio_err, "read EC key\n");
283 	if (informat == FORMAT_ASN1)
284 		{
285 		if (pubin)
286 			eckey = d2i_EC_PUBKEY_bio(in, NULL);
287 		else
288 			eckey = d2i_ECPrivateKey_bio(in, NULL);
289 		}
290 	else if (informat == FORMAT_PEM)
291 		{
292 		if (pubin)
293 			eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL,
294 				NULL);
295 		else
296 			eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL,
297 				passin);
298 		}
299 	else
300 		{
301 		BIO_printf(bio_err, "bad input format specified for key\n");
302 		goto end;
303 		}
304 	if (eckey == NULL)
305 		{
306 		BIO_printf(bio_err,"unable to load Key\n");
307 		ERR_print_errors(bio_err);
308 		goto end;
309 		}
310 
311 	if (outfile == NULL)
312 		{
313 		BIO_set_fp(out, stdout, BIO_NOCLOSE);
314 #ifdef OPENSSL_SYS_VMS
315 			{
316 			BIO *tmpbio = BIO_new(BIO_f_linebuffer());
317 			out = BIO_push(tmpbio, out);
318 			}
319 #endif
320 		}
321 	else
322 		{
323 		if (BIO_write_filename(out, outfile) <= 0)
324 			{
325 			perror(outfile);
326 			goto end;
327 			}
328 		}
329 
330 	group = EC_KEY_get0_group(eckey);
331 
332 	if (new_form)
333 		EC_KEY_set_conv_form(eckey, form);
334 
335 	if (new_asn1_flag)
336 		EC_KEY_set_asn1_flag(eckey, asn1_flag);
337 
338 	if (text)
339 		if (!EC_KEY_print(out, eckey, 0))
340 			{
341 			perror(outfile);
342 			ERR_print_errors(bio_err);
343 			goto end;
344 			}
345 
346 	if (noout)
347 		{
348 		ret = 0;
349 		goto end;
350 		}
351 
352 	BIO_printf(bio_err, "writing EC key\n");
353 	if (outformat == FORMAT_ASN1)
354 		{
355 		if (param_out)
356 			i = i2d_ECPKParameters_bio(out, group);
357 		else if (pubin || pubout)
358 			i = i2d_EC_PUBKEY_bio(out, eckey);
359 		else
360 			i = i2d_ECPrivateKey_bio(out, eckey);
361 		}
362 	else if (outformat == FORMAT_PEM)
363 		{
364 		if (param_out)
365 			i = PEM_write_bio_ECPKParameters(out, group);
366 		else if (pubin || pubout)
367 			i = PEM_write_bio_EC_PUBKEY(out, eckey);
368 		else
369 			i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
370 						NULL, 0, NULL, passout);
371 		}
372 	else
373 		{
374 		BIO_printf(bio_err, "bad output format specified for "
375 			"outfile\n");
376 		goto end;
377 		}
378 
379 	if (!i)
380 		{
381 		BIO_printf(bio_err, "unable to write private key\n");
382 		ERR_print_errors(bio_err);
383 		}
384 	else
385 		ret=0;
386 end:
387 	if (in)
388 		BIO_free(in);
389 	if (out)
390 		BIO_free_all(out);
391 	if (eckey)
392 		EC_KEY_free(eckey);
393 	if (passin)
394 		OPENSSL_free(passin);
395 	if (passout)
396 		OPENSSL_free(passout);
397 	apps_shutdown();
398 	OPENSSL_EXIT(ret);
399 }
400 #endif
401