ec.c revision 296465 
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/*-
74 * -inform arg    - input format - default PEM (one of DER, NET or PEM)
75 * -outform arg   - output format - default PEM
76 * -in arg        - input file - default stdin
77 * -out arg       - output file - default stdout
78 * -des           - encrypt output if PEM format with DES in cbc mode
79 * -text          - print a text version
80 * -param_out     - print the elliptic curve parameters
81 * -conv_form arg - specifies the point encoding form
82 * -param_enc arg - specifies the parameter encoding
83 */
84
85int MAIN(int, char **);
86
87int MAIN(int argc, char **argv)
88{
89    int ret = 1;
90    EC_KEY *eckey = NULL;
91    const EC_GROUP *group;
92    int i, badops = 0;
93    const EVP_CIPHER *enc = NULL;
94    BIO *in = NULL, *out = NULL;
95    int informat, outformat, text = 0, noout = 0;
96    int pubin = 0, pubout = 0, param_out = 0;
97    char *infile, *outfile, *prog, *engine;
98    char *passargin = NULL, *passargout = NULL;
99    char *passin = NULL, *passout = NULL;
100    point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
101    int new_form = 0;
102    int asn1_flag = OPENSSL_EC_NAMED_CURVE;
103    int new_asn1_flag = 0;
104
105    apps_startup();
106
107    if (bio_err == NULL)
108        if ((bio_err = BIO_new(BIO_s_file())) != NULL)
109            BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
110
111    if (!load_config(bio_err, NULL))
112        goto end;
113
114    engine = NULL;
115    infile = NULL;
116    outfile = NULL;
117    informat = FORMAT_PEM;
118    outformat = FORMAT_PEM;
119
120    prog = argv[0];
121    argc--;
122    argv++;
123    while (argc >= 1) {
124        if (strcmp(*argv, "-inform") == 0) {
125            if (--argc < 1)
126                goto bad;
127            informat = str2fmt(*(++argv));
128        } else if (strcmp(*argv, "-outform") == 0) {
129            if (--argc < 1)
130                goto bad;
131            outformat = str2fmt(*(++argv));
132        } else if (strcmp(*argv, "-in") == 0) {
133            if (--argc < 1)
134                goto bad;
135            infile = *(++argv);
136        } else if (strcmp(*argv, "-out") == 0) {
137            if (--argc < 1)
138                goto bad;
139            outfile = *(++argv);
140        } else if (strcmp(*argv, "-passin") == 0) {
141            if (--argc < 1)
142                goto bad;
143            passargin = *(++argv);
144        } else if (strcmp(*argv, "-passout") == 0) {
145            if (--argc < 1)
146                goto bad;
147            passargout = *(++argv);
148        } else if (strcmp(*argv, "-engine") == 0) {
149            if (--argc < 1)
150                goto bad;
151            engine = *(++argv);
152        } else if (strcmp(*argv, "-noout") == 0)
153            noout = 1;
154        else if (strcmp(*argv, "-text") == 0)
155            text = 1;
156        else if (strcmp(*argv, "-conv_form") == 0) {
157            if (--argc < 1)
158                goto bad;
159            ++argv;
160            new_form = 1;
161            if (strcmp(*argv, "compressed") == 0)
162                form = POINT_CONVERSION_COMPRESSED;
163            else if (strcmp(*argv, "uncompressed") == 0)
164                form = POINT_CONVERSION_UNCOMPRESSED;
165            else if (strcmp(*argv, "hybrid") == 0)
166                form = POINT_CONVERSION_HYBRID;
167            else
168                goto bad;
169        } else if (strcmp(*argv, "-param_enc") == 0) {
170            if (--argc < 1)
171                goto bad;
172            ++argv;
173            new_asn1_flag = 1;
174            if (strcmp(*argv, "named_curve") == 0)
175                asn1_flag = OPENSSL_EC_NAMED_CURVE;
176            else if (strcmp(*argv, "explicit") == 0)
177                asn1_flag = 0;
178            else
179                goto bad;
180        } else if (strcmp(*argv, "-param_out") == 0)
181            param_out = 1;
182        else if (strcmp(*argv, "-pubin") == 0)
183            pubin = 1;
184        else if (strcmp(*argv, "-pubout") == 0)
185            pubout = 1;
186        else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) {
187            BIO_printf(bio_err, "unknown option %s\n", *argv);
188            badops = 1;
189            break;
190        }
191        argc--;
192        argv++;
193    }
194
195    if (badops) {
196 bad:
197        BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
198        BIO_printf(bio_err, "where options are\n");
199        BIO_printf(bio_err, " -inform arg     input format - "
200                   "DER or PEM\n");
201        BIO_printf(bio_err, " -outform arg    output format - "
202                   "DER or PEM\n");
203        BIO_printf(bio_err, " -in arg         input file\n");
204        BIO_printf(bio_err, " -passin arg     input file pass "
205                   "phrase source\n");
206        BIO_printf(bio_err, " -out arg        output file\n");
207        BIO_printf(bio_err, " -passout arg    output file pass "
208                   "phrase source\n");
209        BIO_printf(bio_err, " -engine e       use engine e, "
210                   "possibly a hardware device.\n");
211        BIO_printf(bio_err, " -des            encrypt PEM output, "
212                   "instead of 'des' every other \n"
213                   "                 cipher "
214                   "supported by OpenSSL can be used\n");
215        BIO_printf(bio_err, " -text           print the key\n");
216        BIO_printf(bio_err, " -noout          don't print key out\n");
217        BIO_printf(bio_err, " -param_out      print the elliptic "
218                   "curve parameters\n");
219        BIO_printf(bio_err, " -conv_form arg  specifies the "
220                   "point conversion form \n");
221        BIO_printf(bio_err, "                 possible values:"
222                   " compressed\n");
223        BIO_printf(bio_err, "                                 "
224                   " uncompressed (default)\n");
225        BIO_printf(bio_err, "                                  " " hybrid\n");
226        BIO_printf(bio_err, " -param_enc arg  specifies the way"
227                   " the ec parameters are encoded\n");
228        BIO_printf(bio_err, "                 in the asn1 der " "encoding\n");
229        BIO_printf(bio_err, "                 possible values:"
230                   " named_curve (default)\n");
231        BIO_printf(bio_err, "                                  "
232                   "explicit\n");
233        goto end;
234    }
235
236    ERR_load_crypto_strings();
237
238# ifndef OPENSSL_NO_ENGINE
239    setup_engine(bio_err, engine, 0);
240# endif
241
242    if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
243        BIO_printf(bio_err, "Error getting passwords\n");
244        goto end;
245    }
246
247    in = BIO_new(BIO_s_file());
248    out = BIO_new(BIO_s_file());
249    if ((in == NULL) || (out == NULL)) {
250        ERR_print_errors(bio_err);
251        goto end;
252    }
253
254    if (infile == NULL)
255        BIO_set_fp(in, stdin, BIO_NOCLOSE);
256    else {
257        if (BIO_read_filename(in, infile) <= 0) {
258            perror(infile);
259            goto end;
260        }
261    }
262
263    BIO_printf(bio_err, "read EC key\n");
264    if (informat == FORMAT_ASN1) {
265        if (pubin)
266            eckey = d2i_EC_PUBKEY_bio(in, NULL);
267        else
268            eckey = d2i_ECPrivateKey_bio(in, NULL);
269    } else if (informat == FORMAT_PEM) {
270        if (pubin)
271            eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL, NULL);
272        else
273            eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL, passin);
274    } else {
275        BIO_printf(bio_err, "bad input format specified for key\n");
276        goto end;
277    }
278    if (eckey == NULL) {
279        BIO_printf(bio_err, "unable to load Key\n");
280        ERR_print_errors(bio_err);
281        goto end;
282    }
283
284    if (outfile == NULL) {
285        BIO_set_fp(out, stdout, BIO_NOCLOSE);
286# ifdef OPENSSL_SYS_VMS
287        {
288            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
289            out = BIO_push(tmpbio, out);
290        }
291# endif
292    } else {
293        if (BIO_write_filename(out, outfile) <= 0) {
294            perror(outfile);
295            goto end;
296        }
297    }
298
299    group = EC_KEY_get0_group(eckey);
300
301    if (new_form)
302        EC_KEY_set_conv_form(eckey, form);
303
304    if (new_asn1_flag)
305        EC_KEY_set_asn1_flag(eckey, asn1_flag);
306
307    if (text)
308        if (!EC_KEY_print(out, eckey, 0)) {
309            perror(outfile);
310            ERR_print_errors(bio_err);
311            goto end;
312        }
313
314    if (noout) {
315        ret = 0;
316        goto end;
317    }
318
319    BIO_printf(bio_err, "writing EC key\n");
320    if (outformat == FORMAT_ASN1) {
321        if (param_out)
322            i = i2d_ECPKParameters_bio(out, group);
323        else if (pubin || pubout)
324            i = i2d_EC_PUBKEY_bio(out, eckey);
325        else
326            i = i2d_ECPrivateKey_bio(out, eckey);
327    } else if (outformat == FORMAT_PEM) {
328        if (param_out)
329            i = PEM_write_bio_ECPKParameters(out, group);
330        else if (pubin || pubout)
331            i = PEM_write_bio_EC_PUBKEY(out, eckey);
332        else
333            i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
334                                           NULL, 0, NULL, passout);
335    } else {
336        BIO_printf(bio_err, "bad output format specified for " "outfile\n");
337        goto end;
338    }
339
340    if (!i) {
341        BIO_printf(bio_err, "unable to write private key\n");
342        ERR_print_errors(bio_err);
343    } else
344        ret = 0;
345 end:
346    if (in)
347        BIO_free(in);
348    if (out)
349        BIO_free_all(out);
350    if (eckey)
351        EC_KEY_free(eckey);
352    if (passin)
353        OPENSSL_free(passin);
354    if (passout)
355        OPENSSL_free(passout);
356    apps_shutdown();
357    OPENSSL_EXIT(ret);
358}
359#endif
360