]>
git.ipfire.org Git - thirdparty/openssl.git/blob - apps/dsaparam.c
c591b5db532f761e2e6cf2e0db24214ab677d9a4
1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
58 #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
60 #ifndef OPENSSL_NO_DSA
66 # include <openssl/bio.h>
67 # include <openssl/err.h>
68 # include <openssl/bn.h>
69 # include <openssl/dsa.h>
70 # include <openssl/x509.h>
71 # include <openssl/pem.h>
75 static int stop_keygen_flag
= 0;
77 static void timebomb_sigalarm(int foo
)
84 static int dsa_cb(int p
, int n
, BN_GENCB
*cb
);
86 typedef enum OPTION_choice
{
87 OPT_ERR
= -1, OPT_EOF
= 0, OPT_HELP
,
88 OPT_INFORM
, OPT_OUTFORM
, OPT_IN
, OPT_OUT
, OPT_TEXT
, OPT_C
,
89 OPT_NOOUT
, OPT_GENKEY
, OPT_RAND
, OPT_NON_FIPS_ALLOW
, OPT_ENGINE
,
93 OPTIONS dsaparam_options
[] = {
94 {"help", OPT_HELP
, '-', "Display this summary"},
95 {"inform", OPT_INFORM
, 'F', "Input format - DER or PEM"},
96 {"in", OPT_IN
, '<', "Input file"},
97 {"outform", OPT_OUTFORM
, 'F', "Output format - DER or PEM"},
98 {"out", OPT_OUT
, '>', "Output file"},
99 {"text", OPT_TEXT
, '-', "Print as text"},
100 {"C", OPT_C
, '-', "Output C code"},
101 {"noout", OPT_NOOUT
, '-', "No output"},
102 {"genkey", OPT_GENKEY
, '-', "Generate a DSA key"},
103 {"rand", OPT_RAND
, 's', "Files to use for random number input"},
104 {"non-fips-allow", OPT_NON_FIPS_ALLOW
, '-'},
106 {"timebomb", OPT_TIMEBOMB
, 'p', "Interrupt keygen after 'pnum' seconds"},
108 # ifndef OPENSSL_NO_ENGINE
109 {"engine", OPT_ENGINE
, 's', "Use engine e, possibly a hardware device"},
114 int dsaparam_main(int argc
, char **argv
)
117 BIO
*in
= NULL
, *out
= NULL
;
119 int numbits
= -1, num
= 0, genkey
= 0, need_rand
= 0, non_fips_allow
= 0;
120 int informat
= FORMAT_PEM
, outformat
= FORMAT_PEM
, noout
= 0, C
= 0;
121 int ret
= 1, i
, text
= 0, private = 0;
125 char *infile
= NULL
, *outfile
= NULL
, *prog
, *inrand
= NULL
;
128 prog
= opt_init(argc
, argv
, dsaparam_options
);
129 while ((o
= opt_next()) != OPT_EOF
) {
134 BIO_printf(bio_err
, "%s: Use -help for summary.\n", prog
);
137 opt_help(dsaparam_options
);
141 if (!opt_format(opt_arg(), OPT_FMT_PEMDER
, &informat
))
148 if (!opt_format(opt_arg(), OPT_FMT_PEMDER
, &outformat
))
155 (void)setup_engine(opt_arg(), 0);
159 timebomb
= atoi(opt_arg());
169 genkey
= need_rand
= 1;
178 case OPT_NON_FIPS_ALLOW
:
183 argc
= opt_num_rest();
187 if (!opt_int(argv
[0], &num
))
193 private = genkey
? 1 : 0;
195 in
= bio_open_default(infile
, 'r', informat
);
198 out
= bio_open_owner(outfile
, outformat
, private);
203 app_RAND_load_file(NULL
, (inrand
!= NULL
));
205 BIO_printf(bio_err
, "%ld semi-random bytes loaded\n",
206 app_RAND_load_files(inrand
));
212 BIO_printf(bio_err
, "Error allocating BN_GENCB object\n");
215 BN_GENCB_set(cb
, dsa_cb
, bio_err
);
219 BIO_printf(bio_err
, "Error allocating DSA object\n");
223 dsa
->flags
|= DSA_FLAG_NON_FIPS_ALLOW
;
224 BIO_printf(bio_err
, "Generating DSA parameters, %d bit long prime\n",
226 BIO_printf(bio_err
, "This could take some time\n");
229 struct sigaction act
;
230 act
.sa_handler
= timebomb_sigalarm
;
233 "(though I'll stop it if not done within %d secs)\n",
235 if (sigaction(SIGALRM
, &act
, NULL
) != 0) {
236 BIO_printf(bio_err
, "Error, couldn't set SIGALRM handler\n");
242 if (!DSA_generate_parameters_ex(dsa
, num
, NULL
, 0, NULL
, NULL
, cb
)) {
244 if (stop_keygen_flag
) {
245 BIO_printf(bio_err
, "DSA key generation time-stopped\n");
246 /* This is an asked-for behaviour! */
251 ERR_print_errors(bio_err
);
252 BIO_printf(bio_err
, "Error, DSA key generation failed\n");
255 } else if (informat
== FORMAT_ASN1
)
256 dsa
= d2i_DSAparams_bio(in
, NULL
);
258 dsa
= PEM_read_bio_DSAparams(in
, NULL
, NULL
, NULL
);
260 BIO_printf(bio_err
, "unable to load DSA parameters\n");
261 ERR_print_errors(bio_err
);
266 DSAparams_print(out
, dsa
);
270 int len
= BN_num_bytes(dsa
->p
);
271 int bits_p
= BN_num_bits(dsa
->p
);
272 unsigned char *data
= app_malloc(len
+ 20, "BN space");
274 BIO_printf(bio_out
, "DSA *get_dsa%d()\n{\n", bits_p
);
275 print_bignum_var(bio_out
, dsa
->p
, "dsap", len
, data
);
276 print_bignum_var(bio_out
, dsa
->q
, "dsaq", len
, data
);
277 print_bignum_var(bio_out
, dsa
->g
, "dsag", len
, data
);
278 BIO_printf(bio_out
, " DSA *dsa = DSA_new();\n"
280 BIO_printf(bio_out
, " if (dsa == NULL)\n"
282 BIO_printf(bio_out
, " dsa->p = BN_bin2bn(dsap_%d, sizeof (dsap_%d), NULL);\n",
284 BIO_printf(bio_out
, " dsa->q = BN_bin2bn(dsaq_%d, sizeof (dsaq_%d), NULL);\n",
286 BIO_printf(bio_out
, " dsa->g = BN_bin2bn(dsag_%d, sizeof (dsag_%d), NULL);\n",
288 BIO_printf(bio_out
, " if (!dsa->p || !dsa->q || !dsa->g) {\n"
292 " return(dsa);\n}\n");
296 if (outformat
== FORMAT_ASN1
)
297 i
= i2d_DSAparams_bio(out
, dsa
);
299 i
= PEM_write_bio_DSAparams(out
, dsa
);
301 BIO_printf(bio_err
, "unable to write DSA parameters\n");
302 ERR_print_errors(bio_err
);
310 if ((dsakey
= DSAparams_dup(dsa
)) == NULL
)
313 dsakey
->flags
|= DSA_FLAG_NON_FIPS_ALLOW
;
314 if (!DSA_generate_key(dsakey
)) {
315 ERR_print_errors(bio_err
);
320 if (outformat
== FORMAT_ASN1
)
321 i
= i2d_DSAPrivateKey_bio(out
, dsakey
);
323 i
= PEM_write_bio_DSAPrivateKey(out
, dsakey
, NULL
, NULL
, 0, NULL
,
328 app_RAND_write_file(NULL
);
338 static int dsa_cb(int p
, int n
, BN_GENCB
*cb
)
350 BIO_write(BN_GENCB_get_arg(cb
), &c
, 1);
351 (void)BIO_flush(BN_GENCB_get_arg(cb
));
353 if (stop_keygen_flag
)
358 #else /* !OPENSSL_NO_DSA */
361 static void *dummy
= &dummy
;