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Diffstat (limited to 'openssl/apps/gendh.c')
| -rw-r--r-- | openssl/apps/gendh.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/openssl/apps/gendh.c b/openssl/apps/gendh.c new file mode 100644 index 000000000..47497864b --- /dev/null +++ b/openssl/apps/gendh.c @@ -0,0 +1,238 @@ +/* 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 512 +#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; +#ifndef OPENSSL_NO_ENGINE + ENGINE *e = NULL; +#endif + 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 + e = 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; + } +#endif |