wbrawner/openssl
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
openssl/apps/dsaparam.c
Matt Caswell a0a82324f9 Centralise loading default apps config file 
Loading the config file after processing command line options can
cause problems, e.g. where an engine provides new ciphers/digests
these are not then recoginised on the command line. Move the
default config file loading to before the command line option
processing. Whilst we're doing this we might as well centralise
this instead of doing it individually for each application. Finally
if we do it before the OpenSSL_add_ssl_algorithms() call then
ciphersuites provided by an engine (e.g. GOST) can be available to
the apps.

RT#4085
RT#4086

Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-10-12 22:31:00 +01:00

364 lines
12 KiB
C
Raw Blame History

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
#ifndef OPENSSL_NO_DSA
# include <stdio.h>
# include <stdlib.h>
# include <time.h>
# include <string.h>
# include "apps.h"
# include <openssl/bio.h>
# include <openssl/err.h>
# include <openssl/bn.h>
# include <openssl/dsa.h>
# include <openssl/x509.h>
# include <openssl/pem.h>
# ifdef GENCB_TEST
static int stop_keygen_flag = 0;
static void timebomb_sigalarm(int foo)
{
stop_keygen_flag = 1;
}
# endif
static int dsa_cb(int p, int n, BN_GENCB *cb);
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT, OPT_C,
OPT_NOOUT, OPT_GENKEY, OPT_RAND, OPT_NON_FIPS_ALLOW, OPT_ENGINE,
OPT_TIMEBOMB
} OPTION_CHOICE;
OPTIONS dsaparam_options[] = {
{"help", OPT_HELP, '-', "Display this summary"},
{"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
{"in", OPT_IN, '<', "Input file"},
{"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
{"out", OPT_OUT, '>', "Output file"},
{"text", OPT_TEXT, '-', "Print as text"},
{"C", OPT_C, '-', "Output C code"},
{"noout", OPT_NOOUT, '-', "No output"},
{"genkey", OPT_GENKEY, '-', "Generate a DSA key"},
{"rand", OPT_RAND, 's', "Files to use for random number input"},
{"non-fips-allow", OPT_NON_FIPS_ALLOW, '-'},
# ifdef GENCB_TEST
{"timebomb", OPT_TIMEBOMB, 'p', "Interrupt keygen after 'pnum' seconds"},
# endif
# ifndef OPENSSL_NO_ENGINE
{"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
# endif
{NULL}
};
int dsaparam_main(int argc, char **argv)
{
DSA *dsa = NULL;
BIO *in = NULL, *out = NULL;
BN_GENCB *cb = NULL;
int numbits = -1, num = 0, genkey = 0, need_rand = 0, non_fips_allow = 0;
int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0, C = 0;
int ret = 1, i, text = 0, private = 0;
# ifdef GENCB_TEST
int timebomb = 0;
# endif
char *infile = NULL, *outfile = NULL, *prog, *inrand = NULL;
OPTION_CHOICE o;
prog = opt_init(argc, argv, dsaparam_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(dsaparam_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
goto opthelp;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUTFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
goto opthelp;
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_ENGINE:
(void)setup_engine(opt_arg(), 0);
break;
case OPT_TIMEBOMB:
# ifdef GENCB_TEST
timebomb = atoi(opt_arg());
break;
# endif
case OPT_TEXT:
text = 1;
break;
case OPT_C:
C = 1;
break;
case OPT_GENKEY:
genkey = need_rand = 1;
break;
case OPT_RAND:
inrand = opt_arg();
need_rand = 1;
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_NON_FIPS_ALLOW:
non_fips_allow = 1;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (argc == 1) {
if (!opt_int(argv[0], &num))
goto end;
/* generate a key */
numbits = num;
need_rand = 1;
}
private = genkey ? 1 : 0;
in = bio_open_default(infile, 'r', informat);
if (in == NULL)
goto end;
out = bio_open_owner(outfile, outformat, private);
if (out == NULL)
goto end;
if (need_rand) {
app_RAND_load_file(NULL, (inrand != NULL));
if (inrand != NULL)
BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
app_RAND_load_files(inrand));
}
if (numbits > 0) {
cb = BN_GENCB_new();
if (!cb) {
BIO_printf(bio_err, "Error allocating BN_GENCB object\n");
goto end;
}
BN_GENCB_set(cb, dsa_cb, bio_err);
assert(need_rand);
dsa = DSA_new();
if (!dsa) {
BIO_printf(bio_err, "Error allocating DSA object\n");
goto end;
}
if (non_fips_allow)
dsa->flags |= DSA_FLAG_NON_FIPS_ALLOW;
BIO_printf(bio_err, "Generating DSA parameters, %d bit long prime\n",
num);
BIO_printf(bio_err, "This could take some time\n");
# ifdef GENCB_TEST
if (timebomb > 0) {
struct sigaction act;
act.sa_handler = timebomb_sigalarm;
act.sa_flags = 0;
BIO_printf(bio_err,
"(though I'll stop it if not done within %d secs)\n",
timebomb);
if (sigaction(SIGALRM, &act, NULL) != 0) {
BIO_printf(bio_err, "Error, couldn't set SIGALRM handler\n");
goto end;
}
alarm(timebomb);
}
# endif
if (!DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, cb)) {
# ifdef GENCB_TEST
if (stop_keygen_flag) {
BIO_printf(bio_err, "DSA key generation time-stopped\n");
/* This is an asked-for behaviour! */
ret = 0;
goto end;
}
# endif
ERR_print_errors(bio_err);
BIO_printf(bio_err, "Error, DSA key generation failed\n");
goto end;
}
} else if (informat == FORMAT_ASN1)
dsa = d2i_DSAparams_bio(in, NULL);
else
dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL);
if (dsa == NULL) {
BIO_printf(bio_err, "unable to load DSA parameters\n");
ERR_print_errors(bio_err);
goto end;
}
if (text) {
DSAparams_print(out, dsa);
}
if (C) {
int len = BN_num_bytes(dsa->p);
int bits_p = BN_num_bits(dsa->p);
unsigned char *data = app_malloc(len + 20, "BN space");
BIO_printf(bio_out, "DSA *get_dsa%d()\n{\n", bits_p);
print_bignum_var(bio_out, dsa->p, "dsap", len, data);
print_bignum_var(bio_out, dsa->q, "dsaq", len, data);
print_bignum_var(bio_out, dsa->g, "dsag", len, data);
BIO_printf(bio_out, " DSA *dsa = DSA_new();\n"
"\n");
BIO_printf(bio_out, " if (dsa == NULL)\n"
" return NULL;\n");
BIO_printf(bio_out, " dsa->p = BN_bin2bn(dsap_%d, sizeof (dsap_%d), NULL);\n",
bits_p, bits_p);
BIO_printf(bio_out, " dsa->q = BN_bin2bn(dsaq_%d, sizeof (dsaq_%d), NULL);\n",
bits_p, bits_p);
BIO_printf(bio_out, " dsa->g = BN_bin2bn(dsag_%d, sizeof (dsag_%d), NULL);\n",
bits_p, bits_p);
BIO_printf(bio_out, " if (!dsa->p || !dsa->q || !dsa->g) {\n"
" DSA_free(dsa);\n"
" return NULL;\n"
" }\n"
" return(dsa);\n}\n");
}
if (!noout) {
if (outformat == FORMAT_ASN1)
i = i2d_DSAparams_bio(out, dsa);
else
i = PEM_write_bio_DSAparams(out, dsa);
if (!i) {
BIO_printf(bio_err, "unable to write DSA parameters\n");
ERR_print_errors(bio_err);
goto end;
}
}
if (genkey) {
DSA *dsakey;
assert(need_rand);
if ((dsakey = DSAparams_dup(dsa)) == NULL)
goto end;
if (non_fips_allow)
dsakey->flags |= DSA_FLAG_NON_FIPS_ALLOW;
if (!DSA_generate_key(dsakey)) {
ERR_print_errors(bio_err);
DSA_free(dsakey);
goto end;
}
assert(private);
if (outformat == FORMAT_ASN1)
i = i2d_DSAPrivateKey_bio(out, dsakey);
else
i = PEM_write_bio_DSAPrivateKey(out, dsakey, NULL, NULL, 0, NULL,
NULL);
DSA_free(dsakey);
}
if (need_rand)
app_RAND_write_file(NULL);
ret = 0;
end:
BN_GENCB_free(cb);
BIO_free(in);
BIO_free_all(out);
DSA_free(dsa);
return (ret);
}
static int dsa_cb(int p, int n, BN_GENCB *cb)
{
char c = '*';
if (p == 0)
c = '.';
if (p == 1)
c = '+';
if (p == 2)
c = '*';
if (p == 3)
c = '\n';
BIO_write(BN_GENCB_get_arg(cb), &c, 1);
(void)BIO_flush(BN_GENCB_get_arg(cb));
# ifdef GENCB_TEST
if (stop_keygen_flag)
return 0;
# endif
return 1;
}
#else /* !OPENSSL_NO_DSA */
# if PEDANTIC
static void *dummy = &dummy;
# endif
#endif
Reference in a new issue View git blame Copy permalink