dsa.c revision 296341 
1/* apps/dsa.c */
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.
8 *
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).
15 *
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.
22 *
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 :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 *    the apps directory (application code) you must include an acknowledgement:
39 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
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.
52 *
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 */
58
59#include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
60#ifndef OPENSSL_NO_DSA
61# include <stdio.h>
62# include <stdlib.h>
63# include <string.h>
64# include <time.h>
65# include "apps.h"
66# include <openssl/bio.h>
67# include <openssl/err.h>
68# include <openssl/dsa.h>
69# include <openssl/evp.h>
70# include <openssl/x509.h>
71# include <openssl/pem.h>
72# include <openssl/bn.h>
73
74# undef PROG
75# define PROG    dsa_main
76
77/*-
78 * -inform arg  - input format - default PEM (one of DER, NET or PEM)
79 * -outform arg - output format - default PEM
80 * -in arg      - input file - default stdin
81 * -out arg     - output file - default stdout
82 * -des         - encrypt output if PEM format with DES in cbc mode
83 * -des3        - encrypt output if PEM format
84 * -idea        - encrypt output if PEM format
85 * -aes128      - encrypt output if PEM format
86 * -aes192      - encrypt output if PEM format
87 * -aes256      - encrypt output if PEM format
88 * -camellia128 - encrypt output if PEM format
89 * -camellia192 - encrypt output if PEM format
90 * -camellia256 - encrypt output if PEM format
91 * -seed        - encrypt output if PEM format
92 * -text        - print a text version
93 * -modulus     - print the DSA public key
94 */
95
96int MAIN(int, char **);
97
98int MAIN(int argc, char **argv)
99{
100    ENGINE *e = NULL;
101    int ret = 1;
102    DSA *dsa = NULL;
103    int i, badops = 0;
104    const EVP_CIPHER *enc = NULL;
105    BIO *in = NULL, *out = NULL;
106    int informat, outformat, text = 0, noout = 0;
107    int pubin = 0, pubout = 0;
108    char *infile, *outfile, *prog;
109# ifndef OPENSSL_NO_ENGINE
110    char *engine;
111# endif
112    char *passargin = NULL, *passargout = NULL;
113    char *passin = NULL, *passout = NULL;
114    int modulus = 0;
115
116    int pvk_encr = 2;
117
118    apps_startup();
119
120    if (bio_err == NULL)
121        if ((bio_err = BIO_new(BIO_s_file())) != NULL)
122            BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
123
124    if (!load_config(bio_err, NULL))
125        goto end;
126
127# ifndef OPENSSL_NO_ENGINE
128    engine = NULL;
129# endif
130    infile = NULL;
131    outfile = NULL;
132    informat = FORMAT_PEM;
133    outformat = FORMAT_PEM;
134
135    prog = argv[0];
136    argc--;
137    argv++;
138    while (argc >= 1) {
139        if (strcmp(*argv, "-inform") == 0) {
140            if (--argc < 1)
141                goto bad;
142            informat = str2fmt(*(++argv));
143        } else if (strcmp(*argv, "-outform") == 0) {
144            if (--argc < 1)
145                goto bad;
146            outformat = str2fmt(*(++argv));
147        } else if (strcmp(*argv, "-in") == 0) {
148            if (--argc < 1)
149                goto bad;
150            infile = *(++argv);
151        } else if (strcmp(*argv, "-out") == 0) {
152            if (--argc < 1)
153                goto bad;
154            outfile = *(++argv);
155        } else if (strcmp(*argv, "-passin") == 0) {
156            if (--argc < 1)
157                goto bad;
158            passargin = *(++argv);
159        } else if (strcmp(*argv, "-passout") == 0) {
160            if (--argc < 1)
161                goto bad;
162            passargout = *(++argv);
163        }
164# ifndef OPENSSL_NO_ENGINE
165        else if (strcmp(*argv, "-engine") == 0) {
166            if (--argc < 1)
167                goto bad;
168            engine = *(++argv);
169        }
170# endif
171        else if (strcmp(*argv, "-pvk-strong") == 0)
172            pvk_encr = 2;
173        else if (strcmp(*argv, "-pvk-weak") == 0)
174            pvk_encr = 1;
175        else if (strcmp(*argv, "-pvk-none") == 0)
176            pvk_encr = 0;
177        else if (strcmp(*argv, "-noout") == 0)
178            noout = 1;
179        else if (strcmp(*argv, "-text") == 0)
180            text = 1;
181        else if (strcmp(*argv, "-modulus") == 0)
182            modulus = 1;
183        else if (strcmp(*argv, "-pubin") == 0)
184            pubin = 1;
185        else if (strcmp(*argv, "-pubout") == 0)
186            pubout = 1;
187        else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) {
188            BIO_printf(bio_err, "unknown option %s\n", *argv);
189            badops = 1;
190            break;
191        }
192        argc--;
193        argv++;
194    }
195
196    if (badops) {
197 bad:
198        BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
199        BIO_printf(bio_err, "where options are\n");
200        BIO_printf(bio_err, " -inform arg     input format - DER or PEM\n");
201        BIO_printf(bio_err, " -outform arg    output format - DER or PEM\n");
202        BIO_printf(bio_err, " -in arg         input file\n");
203        BIO_printf(bio_err,
204                   " -passin arg     input file pass phrase source\n");
205        BIO_printf(bio_err, " -out arg        output file\n");
206        BIO_printf(bio_err,
207                   " -passout arg    output file pass phrase source\n");
208# ifndef OPENSSL_NO_ENGINE
209        BIO_printf(bio_err,
210                   " -engine e       use engine e, possibly a hardware device.\n");
211# endif
212        BIO_printf(bio_err,
213                   " -des            encrypt PEM output with cbc des\n");
214        BIO_printf(bio_err,
215                   " -des3           encrypt PEM output with ede cbc des using 168 bit key\n");
216# ifndef OPENSSL_NO_IDEA
217        BIO_printf(bio_err,
218                   " -idea           encrypt PEM output with cbc idea\n");
219# endif
220# ifndef OPENSSL_NO_AES
221        BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
222        BIO_printf(bio_err,
223                   "                 encrypt PEM output with cbc aes\n");
224# endif
225# ifndef OPENSSL_NO_CAMELLIA
226        BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
227        BIO_printf(bio_err,
228                   "                 encrypt PEM output with cbc camellia\n");
229# endif
230# ifndef OPENSSL_NO_SEED
231        BIO_printf(bio_err,
232                   " -seed           encrypt PEM output with cbc seed\n");
233# endif
234        BIO_printf(bio_err, " -text           print the key in text\n");
235        BIO_printf(bio_err, " -noout          don't print key out\n");
236        BIO_printf(bio_err, " -modulus        print the DSA public value\n");
237        goto end;
238    }
239
240    ERR_load_crypto_strings();
241
242# ifndef OPENSSL_NO_ENGINE
243    e = setup_engine(bio_err, engine, 0);
244# endif
245
246    if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
247        BIO_printf(bio_err, "Error getting passwords\n");
248        goto end;
249    }
250
251    in = BIO_new(BIO_s_file());
252    out = BIO_new(BIO_s_file());
253    if ((in == NULL) || (out == NULL)) {
254        ERR_print_errors(bio_err);
255        goto end;
256    }
257
258    if (infile == NULL)
259        BIO_set_fp(in, stdin, BIO_NOCLOSE);
260    else {
261        if (BIO_read_filename(in, infile) <= 0) {
262            perror(infile);
263            goto end;
264        }
265    }
266
267    BIO_printf(bio_err, "read DSA key\n");
268
269    {
270        EVP_PKEY *pkey;
271
272        if (pubin)
273            pkey = load_pubkey(bio_err, infile, informat, 1,
274                               passin, e, "Public Key");
275        else
276            pkey = load_key(bio_err, infile, informat, 1,
277                            passin, e, "Private Key");
278
279        if (pkey) {
280            dsa = EVP_PKEY_get1_DSA(pkey);
281            EVP_PKEY_free(pkey);
282        }
283    }
284    if (dsa == NULL) {
285        BIO_printf(bio_err, "unable to load Key\n");
286        ERR_print_errors(bio_err);
287        goto end;
288    }
289
290    if (outfile == NULL) {
291        BIO_set_fp(out, stdout, BIO_NOCLOSE);
292# ifdef OPENSSL_SYS_VMS
293        {
294            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
295            out = BIO_push(tmpbio, out);
296        }
297# endif
298    } else {
299        if (BIO_write_filename(out, outfile) <= 0) {
300            perror(outfile);
301            goto end;
302        }
303    }
304
305    if (text)
306        if (!DSA_print(out, dsa, 0)) {
307            perror(outfile);
308            ERR_print_errors(bio_err);
309            goto end;
310        }
311
312    if (modulus) {
313        fprintf(stdout, "Public Key=");
314        BN_print(out, dsa->pub_key);
315        fprintf(stdout, "\n");
316    }
317
318    if (noout)
319        goto end;
320    BIO_printf(bio_err, "writing DSA key\n");
321    if (outformat == FORMAT_ASN1) {
322        if (pubin || pubout)
323            i = i2d_DSA_PUBKEY_bio(out, dsa);
324        else
325            i = i2d_DSAPrivateKey_bio(out, dsa);
326    } else if (outformat == FORMAT_PEM) {
327        if (pubin || pubout)
328            i = PEM_write_bio_DSA_PUBKEY(out, dsa);
329        else
330            i = PEM_write_bio_DSAPrivateKey(out, dsa, enc,
331                                            NULL, 0, NULL, passout);
332# if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
333    } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
334        EVP_PKEY *pk;
335        pk = EVP_PKEY_new();
336        EVP_PKEY_set1_DSA(pk, dsa);
337        if (outformat == FORMAT_PVK)
338            i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
339        else if (pubin || pubout)
340            i = i2b_PublicKey_bio(out, pk);
341        else
342            i = i2b_PrivateKey_bio(out, pk);
343        EVP_PKEY_free(pk);
344# endif
345    } else {
346        BIO_printf(bio_err, "bad output format specified for outfile\n");
347        goto end;
348    }
349    if (i <= 0) {
350        BIO_printf(bio_err, "unable to write private key\n");
351        ERR_print_errors(bio_err);
352    } else
353        ret = 0;
354 end:
355    if (in != NULL)
356        BIO_free(in);
357    if (out != NULL)
358        BIO_free_all(out);
359    if (dsa != NULL)
360        DSA_free(dsa);
361    if (passin)
362        OPENSSL_free(passin);
363    if (passout)
364        OPENSSL_free(passout);
365    apps_shutdown();
366    OPENSSL_EXIT(ret);
367}
368#else                           /* !OPENSSL_NO_DSA */
369
370# if PEDANTIC
371static void *dummy = &dummy;
372# endif
373
374#endif
375