sl@0: /* apps/gendh.c */ sl@0: /* obsoleted by dhparam.c */ sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) sl@0: * All rights reserved. sl@0: * sl@0: * This package is an SSL implementation written sl@0: * by Eric Young (eay@cryptsoft.com). sl@0: * The implementation was written so as to conform with Netscapes SSL. sl@0: * sl@0: * This library is free for commercial and non-commercial use as long as sl@0: * the following conditions are aheared to. The following conditions sl@0: * apply to all code found in this distribution, be it the RC4, RSA, sl@0: * lhash, DES, etc., code; not just the SSL code. The SSL documentation sl@0: * included with this distribution is covered by the same copyright terms sl@0: * except that the holder is Tim Hudson (tjh@cryptsoft.com). sl@0: * sl@0: * Copyright remains Eric Young's, and as such any Copyright notices in sl@0: * the code are not to be removed. sl@0: * If this package is used in a product, Eric Young should be given attribution sl@0: * as the author of the parts of the library used. sl@0: * This can be in the form of a textual message at program startup or sl@0: * in documentation (online or textual) provided with the package. sl@0: * sl@0: * Redistribution and use in source and binary forms, with or without sl@0: * modification, are permitted provided that the following conditions sl@0: * are met: sl@0: * 1. Redistributions of source code must retain the copyright sl@0: * notice, this list of conditions and the following disclaimer. sl@0: * 2. Redistributions in binary form must reproduce the above copyright sl@0: * notice, this list of conditions and the following disclaimer in the sl@0: * documentation and/or other materials provided with the distribution. sl@0: * 3. All advertising materials mentioning features or use of this software sl@0: * must display the following acknowledgement: sl@0: * "This product includes cryptographic software written by sl@0: * Eric Young (eay@cryptsoft.com)" sl@0: * The word 'cryptographic' can be left out if the rouines from the library sl@0: * being used are not cryptographic related :-). sl@0: * 4. If you include any Windows specific code (or a derivative thereof) from sl@0: * the apps directory (application code) you must include an acknowledgement: sl@0: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" sl@0: * sl@0: * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND sl@0: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE sl@0: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE sl@0: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE sl@0: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL sl@0: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS sl@0: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) sl@0: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT sl@0: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY sl@0: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF sl@0: * SUCH DAMAGE. sl@0: * sl@0: * The licence and distribution terms for any publically available version or sl@0: * derivative of this code cannot be changed. i.e. this code cannot simply be sl@0: * copied and put under another distribution licence sl@0: * [including the GNU Public Licence.] sl@0: */ sl@0: sl@0: #include sl@0: /* Until the key-gen callbacks are modified to use newer prototypes, we allow sl@0: * deprecated functions for openssl-internal code */ sl@0: #ifdef OPENSSL_NO_DEPRECATED sl@0: #undef OPENSSL_NO_DEPRECATED sl@0: #endif sl@0: sl@0: #ifndef OPENSSL_NO_DH sl@0: #include sl@0: #include sl@0: #include sl@0: #include sl@0: #include "apps.h" sl@0: #include sl@0: #include sl@0: #include sl@0: #include sl@0: #include sl@0: #include sl@0: #include sl@0: sl@0: #define DEFBITS 512 sl@0: #undef PROG sl@0: #define PROG gendh_main sl@0: sl@0: static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb); sl@0: sl@0: sl@0: int MAIN(int, char **); sl@0: sl@0: int MAIN(int argc, char **argv) sl@0: { sl@0: BN_GENCB cb; sl@0: #ifndef OPENSSL_NO_ENGINE sl@0: ENGINE *e = NULL; sl@0: #endif sl@0: DH *dh=NULL; sl@0: int ret=1,num=DEFBITS; sl@0: int g=2; sl@0: char *outfile=NULL; sl@0: char *inrand=NULL; sl@0: #ifndef OPENSSL_NO_ENGINE sl@0: char *engine=NULL; sl@0: #endif sl@0: BIO *out=NULL; sl@0: sl@0: apps_startup(); sl@0: sl@0: BN_GENCB_set(&cb, dh_cb, bio_err); sl@0: if (bio_err == NULL) sl@0: if ((bio_err=BIO_new(BIO_s_file())) != NULL) sl@0: BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); sl@0: sl@0: if (!load_config(bio_err, NULL)) sl@0: goto end; sl@0: sl@0: argv++; sl@0: argc--; sl@0: for (;;) sl@0: { sl@0: if (argc <= 0) break; sl@0: if (strcmp(*argv,"-out") == 0) sl@0: { sl@0: if (--argc < 1) goto bad; sl@0: outfile= *(++argv); sl@0: } sl@0: else if (strcmp(*argv,"-2") == 0) sl@0: g=2; sl@0: /* else if (strcmp(*argv,"-3") == 0) sl@0: g=3; */ sl@0: else if (strcmp(*argv,"-5") == 0) sl@0: g=5; sl@0: #ifndef OPENSSL_NO_ENGINE sl@0: else if (strcmp(*argv,"-engine") == 0) sl@0: { sl@0: if (--argc < 1) goto bad; sl@0: engine= *(++argv); sl@0: } sl@0: #endif sl@0: else if (strcmp(*argv,"-rand") == 0) sl@0: { sl@0: if (--argc < 1) goto bad; sl@0: inrand= *(++argv); sl@0: } sl@0: else sl@0: break; sl@0: argv++; sl@0: argc--; sl@0: } sl@0: if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) sl@0: { sl@0: bad: sl@0: BIO_printf(bio_err,"usage: gendh [args] [numbits]\n"); sl@0: BIO_printf(bio_err," -out file - output the key to 'file\n"); sl@0: BIO_printf(bio_err," -2 - use 2 as the generator value\n"); sl@0: /* BIO_printf(bio_err," -3 - use 3 as the generator value\n"); */ sl@0: BIO_printf(bio_err," -5 - use 5 as the generator value\n"); sl@0: #ifndef OPENSSL_NO_ENGINE sl@0: BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n"); sl@0: #endif sl@0: BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); sl@0: BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); sl@0: BIO_printf(bio_err," the random number generator\n"); sl@0: goto end; sl@0: } sl@0: sl@0: #ifndef OPENSSL_NO_ENGINE sl@0: e = setup_engine(bio_err, engine, 0); sl@0: #endif sl@0: sl@0: out=BIO_new(BIO_s_file()); sl@0: if (out == NULL) sl@0: { sl@0: ERR_print_errors(bio_err); sl@0: goto end; sl@0: } sl@0: sl@0: if (outfile == NULL) sl@0: { sl@0: BIO_set_fp(out,stdout,BIO_NOCLOSE); sl@0: sl@0: #ifdef OPENSSL_SYS_VMS sl@0: { sl@0: BIO *tmpbio = BIO_new(BIO_f_linebuffer()); sl@0: out = BIO_push(tmpbio, out); sl@0: } sl@0: #endif sl@0: } sl@0: else sl@0: { sl@0: if (BIO_write_filename(out,outfile) <= 0) sl@0: { sl@0: perror(outfile); sl@0: goto end; sl@0: } sl@0: } sl@0: sl@0: if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) sl@0: { sl@0: BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); sl@0: } sl@0: if (inrand != NULL) sl@0: BIO_printf(bio_err,"%ld semi-random bytes loaded\n", sl@0: app_RAND_load_files(inrand)); sl@0: sl@0: BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g); sl@0: BIO_printf(bio_err,"This is going to take a long time\n"); sl@0: sl@0: if(((dh = DH_new()) == NULL) || !DH_generate_parameters_ex(dh, num, g, &cb)) sl@0: goto end; sl@0: sl@0: app_RAND_write_file(NULL, bio_err); sl@0: sl@0: if (!PEM_write_bio_DHparams(out,dh)) sl@0: goto end; sl@0: ret=0; sl@0: end: sl@0: if (ret != 0) sl@0: ERR_print_errors(bio_err); sl@0: if (out != NULL) BIO_free_all(out); sl@0: if (dh != NULL) DH_free(dh); sl@0: apps_shutdown(); sl@0: OPENSSL_EXIT(ret); sl@0: } sl@0: sl@0: static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb) sl@0: { sl@0: char c='*'; sl@0: sl@0: if (p == 0) c='.'; sl@0: if (p == 1) c='+'; sl@0: if (p == 2) c='*'; sl@0: if (p == 3) c='\n'; sl@0: BIO_write(cb->arg,&c,1); sl@0: (void)BIO_flush(cb->arg); sl@0: #ifdef LINT sl@0: p=n; sl@0: #endif sl@0: return 1; sl@0: } sl@0: #endif