155714Skris/* apps/dh.c */ 259191Skris/* obsoleted by dhparam.c */ 355714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 455714Skris * All rights reserved. 555714Skris * 655714Skris * This package is an SSL implementation written 755714Skris * by Eric Young (eay@cryptsoft.com). 855714Skris * The implementation was written so as to conform with Netscapes SSL. 9280304Sjkim * 1055714Skris * This library is free for commercial and non-commercial use as long as 1155714Skris * the following conditions are aheared to. The following conditions 1255714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1355714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1455714Skris * included with this distribution is covered by the same copyright terms 1555714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 16280304Sjkim * 1755714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1855714Skris * the code are not to be removed. 1955714Skris * If this package is used in a product, Eric Young should be given attribution 2055714Skris * as the author of the parts of the library used. 2155714Skris * This can be in the form of a textual message at program startup or 2255714Skris * in documentation (online or textual) provided with the package. 23280304Sjkim * 2455714Skris * Redistribution and use in source and binary forms, with or without 2555714Skris * modification, are permitted provided that the following conditions 2655714Skris * are met: 2755714Skris * 1. Redistributions of source code must retain the copyright 2855714Skris * notice, this list of conditions and the following disclaimer. 2955714Skris * 2. Redistributions in binary form must reproduce the above copyright 3055714Skris * notice, this list of conditions and the following disclaimer in the 3155714Skris * documentation and/or other materials provided with the distribution. 3255714Skris * 3. All advertising materials mentioning features or use of this software 3355714Skris * must display the following acknowledgement: 3455714Skris * "This product includes cryptographic software written by 3555714Skris * Eric Young (eay@cryptsoft.com)" 3655714Skris * The word 'cryptographic' can be left out if the rouines from the library 3755714Skris * being used are not cryptographic related :-). 38280304Sjkim * 4. If you include any Windows specific code (or a derivative thereof) from 3955714Skris * the apps directory (application code) you must include an acknowledgement: 4055714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 41280304Sjkim * 4255714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4355714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4455714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4555714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4655714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4755714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4855714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4955714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 5055714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5155714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5255714Skris * SUCH DAMAGE. 53280304Sjkim * 5455714Skris * The licence and distribution terms for any publically available version or 5555714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5655714Skris * copied and put under another distribution licence 5755714Skris * [including the GNU Public Licence.] 5855714Skris */ 5955714Skris 60280304Sjkim#include <openssl/opensslconf.h> /* for OPENSSL_NO_DH */ 61109998Smarkm#ifndef OPENSSL_NO_DH 62280304Sjkim# include <stdio.h> 63280304Sjkim# include <stdlib.h> 64280304Sjkim# include <time.h> 65280304Sjkim# include <string.h> 66280304Sjkim# include "apps.h" 67280304Sjkim# include <openssl/bio.h> 68280304Sjkim# include <openssl/err.h> 69280304Sjkim# include <openssl/bn.h> 70280304Sjkim# include <openssl/dh.h> 71280304Sjkim# include <openssl/x509.h> 72280304Sjkim# include <openssl/pem.h> 7355714Skris 74280304Sjkim# undef PROG 75280304Sjkim# define PROG dh_main 7655714Skris 77280304Sjkim/*- 78280304Sjkim * -inform arg - input format - default PEM (DER or PEM) 7955714Skris * -outform arg - output format - default PEM 80280304Sjkim * -in arg - input file - default stdin 81280304Sjkim * -out arg - output file - default stdout 82280304Sjkim * -check - check the parameters are ok 8355714Skris * -noout 8455714Skris * -text 8555714Skris * -C 8655714Skris */ 8755714Skris 8859191Skrisint MAIN(int, char **); 8959191Skris 9055714Skrisint MAIN(int argc, char **argv) 91280304Sjkim{ 92280304Sjkim DH *dh = NULL; 93280304Sjkim int i, badops = 0, text = 0; 94280304Sjkim BIO *in = NULL, *out = NULL; 95280304Sjkim int informat, outformat, check = 0, noout = 0, C = 0, ret = 1; 96280304Sjkim char *infile, *outfile, *prog; 97280304Sjkim# ifndef OPENSSL_NO_ENGINE 98280304Sjkim char *engine; 99280304Sjkim# endif 10055714Skris 101280304Sjkim apps_startup(); 10255714Skris 103280304Sjkim if (bio_err == NULL) 104280304Sjkim if ((bio_err = BIO_new(BIO_s_file())) != NULL) 105280304Sjkim BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); 10655714Skris 107280304Sjkim if (!load_config(bio_err, NULL)) 108280304Sjkim goto end; 109109998Smarkm 110280304Sjkim# ifndef OPENSSL_NO_ENGINE 111280304Sjkim engine = NULL; 112280304Sjkim# endif 113280304Sjkim infile = NULL; 114280304Sjkim outfile = NULL; 115280304Sjkim informat = FORMAT_PEM; 116280304Sjkim outformat = FORMAT_PEM; 11755714Skris 118280304Sjkim prog = argv[0]; 119280304Sjkim argc--; 120280304Sjkim argv++; 121280304Sjkim while (argc >= 1) { 122280304Sjkim if (strcmp(*argv, "-inform") == 0) { 123280304Sjkim if (--argc < 1) 124280304Sjkim goto bad; 125280304Sjkim informat = str2fmt(*(++argv)); 126280304Sjkim } else if (strcmp(*argv, "-outform") == 0) { 127280304Sjkim if (--argc < 1) 128280304Sjkim goto bad; 129280304Sjkim outformat = str2fmt(*(++argv)); 130280304Sjkim } else if (strcmp(*argv, "-in") == 0) { 131280304Sjkim if (--argc < 1) 132280304Sjkim goto bad; 133280304Sjkim infile = *(++argv); 134280304Sjkim } else if (strcmp(*argv, "-out") == 0) { 135280304Sjkim if (--argc < 1) 136280304Sjkim goto bad; 137280304Sjkim outfile = *(++argv); 138280304Sjkim } 139280304Sjkim# ifndef OPENSSL_NO_ENGINE 140280304Sjkim else if (strcmp(*argv, "-engine") == 0) { 141280304Sjkim if (--argc < 1) 142280304Sjkim goto bad; 143280304Sjkim engine = *(++argv); 144280304Sjkim } 145280304Sjkim# endif 146280304Sjkim else if (strcmp(*argv, "-check") == 0) 147280304Sjkim check = 1; 148280304Sjkim else if (strcmp(*argv, "-text") == 0) 149280304Sjkim text = 1; 150280304Sjkim else if (strcmp(*argv, "-C") == 0) 151280304Sjkim C = 1; 152280304Sjkim else if (strcmp(*argv, "-noout") == 0) 153280304Sjkim noout = 1; 154280304Sjkim else { 155280304Sjkim BIO_printf(bio_err, "unknown option %s\n", *argv); 156280304Sjkim badops = 1; 157280304Sjkim break; 158280304Sjkim } 159280304Sjkim argc--; 160280304Sjkim argv++; 161280304Sjkim } 16255714Skris 163280304Sjkim if (badops) { 164280304Sjkim bad: 165280304Sjkim BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); 166280304Sjkim BIO_printf(bio_err, "where options are\n"); 167280304Sjkim BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n"); 168280304Sjkim BIO_printf(bio_err, 169280304Sjkim " -outform arg output format - one of DER PEM\n"); 170280304Sjkim BIO_printf(bio_err, " -in arg input file\n"); 171280304Sjkim BIO_printf(bio_err, " -out arg output file\n"); 172280304Sjkim BIO_printf(bio_err, " -check check the DH parameters\n"); 173280304Sjkim BIO_printf(bio_err, 174280304Sjkim " -text print a text form of the DH parameters\n"); 175280304Sjkim BIO_printf(bio_err, " -C Output C code\n"); 176280304Sjkim BIO_printf(bio_err, " -noout no output\n"); 177280304Sjkim# ifndef OPENSSL_NO_ENGINE 178280304Sjkim BIO_printf(bio_err, 179280304Sjkim " -engine e use engine e, possibly a hardware device.\n"); 180280304Sjkim# endif 181280304Sjkim goto end; 182280304Sjkim } 18355714Skris 184280304Sjkim ERR_load_crypto_strings(); 18555714Skris 186280304Sjkim# ifndef OPENSSL_NO_ENGINE 187280304Sjkim setup_engine(bio_err, engine, 0); 188280304Sjkim# endif 189109998Smarkm 190280304Sjkim in = BIO_new(BIO_s_file()); 191280304Sjkim out = BIO_new(BIO_s_file()); 192280304Sjkim if ((in == NULL) || (out == NULL)) { 193280304Sjkim ERR_print_errors(bio_err); 194280304Sjkim goto end; 195280304Sjkim } 19655714Skris 197280304Sjkim if (infile == NULL) 198280304Sjkim BIO_set_fp(in, stdin, BIO_NOCLOSE); 199280304Sjkim else { 200280304Sjkim if (BIO_read_filename(in, infile) <= 0) { 201280304Sjkim perror(infile); 202280304Sjkim goto end; 203280304Sjkim } 204280304Sjkim } 205280304Sjkim if (outfile == NULL) { 206280304Sjkim BIO_set_fp(out, stdout, BIO_NOCLOSE); 207280304Sjkim# ifdef OPENSSL_SYS_VMS 208280304Sjkim { 209280304Sjkim BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 210280304Sjkim out = BIO_push(tmpbio, out); 211280304Sjkim } 212280304Sjkim# endif 213280304Sjkim } else { 214280304Sjkim if (BIO_write_filename(out, outfile) <= 0) { 215280304Sjkim perror(outfile); 216280304Sjkim goto end; 217280304Sjkim } 218280304Sjkim } 21955714Skris 220280304Sjkim if (informat == FORMAT_ASN1) 221280304Sjkim dh = d2i_DHparams_bio(in, NULL); 222280304Sjkim else if (informat == FORMAT_PEM) 223280304Sjkim dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL); 224280304Sjkim else { 225280304Sjkim BIO_printf(bio_err, "bad input format specified\n"); 226280304Sjkim goto end; 227280304Sjkim } 228280304Sjkim if (dh == NULL) { 229280304Sjkim BIO_printf(bio_err, "unable to load DH parameters\n"); 230280304Sjkim ERR_print_errors(bio_err); 231280304Sjkim goto end; 232280304Sjkim } 23355714Skris 234280304Sjkim if (text) { 235280304Sjkim DHparams_print(out, dh); 236280304Sjkim# ifdef undef 237280304Sjkim printf("p="); 238280304Sjkim BN_print(stdout, dh->p); 239280304Sjkim printf("\ng="); 240280304Sjkim BN_print(stdout, dh->g); 241280304Sjkim printf("\n"); 242280304Sjkim if (dh->length != 0) 243280304Sjkim printf("recommended private length=%ld\n", dh->length); 244280304Sjkim# endif 245280304Sjkim } 24655714Skris 247280304Sjkim if (check) { 248280304Sjkim if (!DH_check(dh, &i)) { 249280304Sjkim ERR_print_errors(bio_err); 250280304Sjkim goto end; 251280304Sjkim } 252280304Sjkim if (i & DH_CHECK_P_NOT_PRIME) 253280304Sjkim printf("p value is not prime\n"); 254280304Sjkim if (i & DH_CHECK_P_NOT_SAFE_PRIME) 255280304Sjkim printf("p value is not a safe prime\n"); 256280304Sjkim if (i & DH_UNABLE_TO_CHECK_GENERATOR) 257280304Sjkim printf("unable to check the generator value\n"); 258280304Sjkim if (i & DH_NOT_SUITABLE_GENERATOR) 259280304Sjkim printf("the g value is not a generator\n"); 260280304Sjkim if (i == 0) 261280304Sjkim printf("DH parameters appear to be ok.\n"); 262280304Sjkim } 263280304Sjkim if (C) { 264280304Sjkim unsigned char *data; 265280304Sjkim int len, l, bits; 26655714Skris 267280304Sjkim len = BN_num_bytes(dh->p); 268280304Sjkim bits = BN_num_bits(dh->p); 269280304Sjkim data = (unsigned char *)OPENSSL_malloc(len); 270280304Sjkim if (data == NULL) { 271280304Sjkim perror("OPENSSL_malloc"); 272280304Sjkim goto end; 273280304Sjkim } 274280304Sjkim l = BN_bn2bin(dh->p, data); 275280304Sjkim printf("static unsigned char dh%d_p[]={", bits); 276280304Sjkim for (i = 0; i < l; i++) { 277280304Sjkim if ((i % 12) == 0) 278280304Sjkim printf("\n\t"); 279280304Sjkim printf("0x%02X,", data[i]); 280280304Sjkim } 281280304Sjkim printf("\n\t};\n"); 28255714Skris 283280304Sjkim l = BN_bn2bin(dh->g, data); 284280304Sjkim printf("static unsigned char dh%d_g[]={", bits); 285280304Sjkim for (i = 0; i < l; i++) { 286280304Sjkim if ((i % 12) == 0) 287280304Sjkim printf("\n\t"); 288280304Sjkim printf("0x%02X,", data[i]); 289280304Sjkim } 290280304Sjkim printf("\n\t};\n\n"); 29155714Skris 292280304Sjkim printf("DH *get_dh%d()\n\t{\n", bits); 293280304Sjkim printf("\tDH *dh;\n\n"); 294280304Sjkim printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n"); 295280304Sjkim printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n", 296280304Sjkim bits, bits); 297280304Sjkim printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n", 298280304Sjkim bits, bits); 299280304Sjkim printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n"); 300280304Sjkim printf("\t\treturn(NULL);\n"); 301280304Sjkim printf("\treturn(dh);\n\t}\n"); 302280304Sjkim OPENSSL_free(data); 303280304Sjkim } 30455714Skris 305280304Sjkim if (!noout) { 306280304Sjkim if (outformat == FORMAT_ASN1) 307280304Sjkim i = i2d_DHparams_bio(out, dh); 308280304Sjkim else if (outformat == FORMAT_PEM) 309280304Sjkim i = PEM_write_bio_DHparams(out, dh); 310280304Sjkim else { 311280304Sjkim BIO_printf(bio_err, "bad output format specified for outfile\n"); 312280304Sjkim goto end; 313280304Sjkim } 314280304Sjkim if (!i) { 315280304Sjkim BIO_printf(bio_err, "unable to write DH parameters\n"); 316280304Sjkim ERR_print_errors(bio_err); 317280304Sjkim goto end; 318280304Sjkim } 319280304Sjkim } 320280304Sjkim ret = 0; 321280304Sjkim end: 322280304Sjkim if (in != NULL) 323280304Sjkim BIO_free(in); 324280304Sjkim if (out != NULL) 325280304Sjkim BIO_free_all(out); 326280304Sjkim if (dh != NULL) 327280304Sjkim DH_free(dh); 328280304Sjkim apps_shutdown(); 329280304Sjkim OPENSSL_EXIT(ret); 330280304Sjkim} 331280304Sjkim#else /* !OPENSSL_NO_DH */ 33255714Skris 333238405Sjkim# if PEDANTIC 334280304Sjkimstatic void *dummy = &dummy; 335238405Sjkim# endif 336238405Sjkim 33755714Skris#endif 338