| /* apps/gendh.c */ |
| /* obsoleted by dhparam.c */ |
| /* 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> |
| /* |
| * Until the key-gen callbacks are modified to use newer prototypes, we allow |
| * deprecated functions for openssl-internal code |
| */ |
| #ifdef OPENSSL_NO_DEPRECATED |
| # undef OPENSSL_NO_DEPRECATED |
| #endif |
| |
| #ifndef OPENSSL_NO_DH |
| # include <stdio.h> |
| # include <string.h> |
| # include <sys/types.h> |
| # include <sys/stat.h> |
| # include "apps.h" |
| # include <openssl/bio.h> |
| # include <openssl/rand.h> |
| # include <openssl/err.h> |
| # include <openssl/bn.h> |
| # include <openssl/dh.h> |
| # include <openssl/x509.h> |
| # include <openssl/pem.h> |
| |
| # define DEFBITS 2048 |
| # undef PROG |
| # define PROG gendh_main |
| |
| static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb); |
| |
| int MAIN(int, char **); |
| |
| int MAIN(int argc, char **argv) |
| { |
| BN_GENCB cb; |
| DH *dh = NULL; |
| int ret = 1, num = DEFBITS; |
| int g = 2; |
| char *outfile = NULL; |
| char *inrand = NULL; |
| # ifndef OPENSSL_NO_ENGINE |
| char *engine = NULL; |
| # endif |
| BIO *out = NULL; |
| |
| apps_startup(); |
| |
| BN_GENCB_set(&cb, dh_cb, bio_err); |
| if (bio_err == NULL) |
| if ((bio_err = BIO_new(BIO_s_file())) != NULL) |
| BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); |
| |
| if (!load_config(bio_err, NULL)) |
| goto end; |
| |
| argv++; |
| argc--; |
| for (;;) { |
| if (argc <= 0) |
| break; |
| if (strcmp(*argv, "-out") == 0) { |
| if (--argc < 1) |
| goto bad; |
| outfile = *(++argv); |
| } else if (strcmp(*argv, "-2") == 0) |
| g = 2; |
| /*- else if (strcmp(*argv,"-3") == 0) |
| g=3; */ |
| else if (strcmp(*argv, "-5") == 0) |
| g = 5; |
| # ifndef OPENSSL_NO_ENGINE |
| else if (strcmp(*argv, "-engine") == 0) { |
| if (--argc < 1) |
| goto bad; |
| engine = *(++argv); |
| } |
| # endif |
| else if (strcmp(*argv, "-rand") == 0) { |
| if (--argc < 1) |
| goto bad; |
| inrand = *(++argv); |
| } else |
| break; |
| argv++; |
| argc--; |
| } |
| if ((argc >= 1) && ((sscanf(*argv, "%d", &num) == 0) || (num < 0))) { |
| bad: |
| BIO_printf(bio_err, "usage: gendh [args] [numbits]\n"); |
| BIO_printf(bio_err, " -out file - output the key to 'file\n"); |
| BIO_printf(bio_err, " -2 - use 2 as the generator value\n"); |
| /* |
| * BIO_printf(bio_err," -3 - use 3 as the generator value\n"); |
| */ |
| BIO_printf(bio_err, " -5 - use 5 as the generator value\n"); |
| # ifndef OPENSSL_NO_ENGINE |
| BIO_printf(bio_err, |
| " -engine e - use engine e, possibly a hardware device.\n"); |
| # endif |
| BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, |
| LIST_SEPARATOR_CHAR); |
| BIO_printf(bio_err, |
| " - load the file (or the files in the directory) into\n"); |
| BIO_printf(bio_err, " the random number generator\n"); |
| goto end; |
| } |
| # ifndef OPENSSL_NO_ENGINE |
| setup_engine(bio_err, engine, 0); |
| # endif |
| |
| out = BIO_new(BIO_s_file()); |
| if (out == NULL) { |
| ERR_print_errors(bio_err); |
| goto end; |
| } |
| |
| if (outfile == NULL) { |
| BIO_set_fp(out, stdout, BIO_NOCLOSE); |
| # ifdef OPENSSL_SYS_VMS |
| { |
| BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
| out = BIO_push(tmpbio, out); |
| } |
| # endif |
| } else { |
| if (BIO_write_filename(out, outfile) <= 0) { |
| perror(outfile); |
| goto end; |
| } |
| } |
| |
| if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) { |
| BIO_printf(bio_err, |
| "warning, not much extra random data, consider using the -rand option\n"); |
| } |
| if (inrand != NULL) |
| BIO_printf(bio_err, "%ld semi-random bytes loaded\n", |
| app_RAND_load_files(inrand)); |
| |
| BIO_printf(bio_err, |
| "Generating DH parameters, %d bit long safe prime, generator %d\n", |
| num, g); |
| BIO_printf(bio_err, "This is going to take a long time\n"); |
| |
| if (((dh = DH_new()) == NULL) |
| || !DH_generate_parameters_ex(dh, num, g, &cb)) |
| goto end; |
| |
| app_RAND_write_file(NULL, bio_err); |
| |
| if (!PEM_write_bio_DHparams(out, dh)) |
| goto end; |
| ret = 0; |
| end: |
| if (ret != 0) |
| ERR_print_errors(bio_err); |
| if (out != NULL) |
| BIO_free_all(out); |
| if (dh != NULL) |
| DH_free(dh); |
| apps_shutdown(); |
| OPENSSL_EXIT(ret); |
| } |
| |
| static int MS_CALLBACK dh_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(cb->arg, &c, 1); |
| (void)BIO_flush(cb->arg); |
| # ifdef LINT |
| p = n; |
| # endif |
| return 1; |
| } |
| #else /* !OPENSSL_NO_DH */ |
| |
| # if PEDANTIC |
| static void *dummy = &dummy; |
| # endif |
| |
| #endif |
