[15529] | 1 | /* apps/gendh.c */ |
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| 2 | /* obsoleted by dhparam.c */ |
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| 3 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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| 4 | * All rights reserved. |
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| 5 | * |
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| 6 | * This package is an SSL implementation written |
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| 7 | * by Eric Young (eay@cryptsoft.com). |
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| 8 | * The implementation was written so as to conform with Netscapes SSL. |
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| 9 | * |
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| 10 | * This library is free for commercial and non-commercial use as long as |
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| 11 | * the following conditions are aheared to. The following conditions |
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| 12 | * apply to all code found in this distribution, be it the RC4, RSA, |
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| 13 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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| 14 | * included with this distribution is covered by the same copyright terms |
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| 15 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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| 16 | * |
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| 17 | * Copyright remains Eric Young's, and as such any Copyright notices in |
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| 18 | * the code are not to be removed. |
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| 19 | * If this package is used in a product, Eric Young should be given attribution |
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| 20 | * as the author of the parts of the library used. |
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| 21 | * This can be in the form of a textual message at program startup or |
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| 22 | * in documentation (online or textual) provided with the package. |
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| 23 | * |
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| 24 | * Redistribution and use in source and binary forms, with or without |
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| 25 | * modification, are permitted provided that the following conditions |
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| 26 | * are met: |
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| 27 | * 1. Redistributions of source code must retain the copyright |
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| 28 | * notice, this list of conditions and the following disclaimer. |
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| 29 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 30 | * notice, this list of conditions and the following disclaimer in the |
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| 31 | * documentation and/or other materials provided with the distribution. |
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| 32 | * 3. All advertising materials mentioning features or use of this software |
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| 33 | * must display the following acknowledgement: |
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| 34 | * "This product includes cryptographic software written by |
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| 35 | * Eric Young (eay@cryptsoft.com)" |
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| 36 | * The word 'cryptographic' can be left out if the rouines from the library |
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| 37 | * being used are not cryptographic related :-). |
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| 38 | * 4. If you include any Windows specific code (or a derivative thereof) from |
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| 39 | * the apps directory (application code) you must include an acknowledgement: |
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| 40 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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| 41 | * |
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| 42 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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| 43 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 44 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 45 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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| 46 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 47 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 48 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 49 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 50 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 51 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 52 | * SUCH DAMAGE. |
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| 53 | * |
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| 54 | * The licence and distribution terms for any publically available version or |
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| 55 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
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| 56 | * copied and put under another distribution licence |
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| 57 | * [including the GNU Public Licence.] |
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| 58 | */ |
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| 59 | |
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| 60 | #ifndef NO_DH |
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| 61 | #include <stdio.h> |
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| 62 | #include <string.h> |
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| 63 | #include <sys/types.h> |
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| 64 | #include <sys/stat.h> |
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| 65 | #include "apps.h" |
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| 66 | #include <openssl/bio.h> |
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| 67 | #include <openssl/rand.h> |
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| 68 | #include <openssl/err.h> |
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| 69 | #include <openssl/bn.h> |
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| 70 | #include <openssl/dh.h> |
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| 71 | #include <openssl/x509.h> |
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| 72 | #include <openssl/pem.h> |
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| 73 | |
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| 74 | #define DEFBITS 512 |
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| 75 | #undef PROG |
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| 76 | #define PROG gendh_main |
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| 77 | |
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| 78 | static void MS_CALLBACK dh_cb(int p, int n, void *arg); |
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| 79 | |
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| 80 | int MAIN(int, char **); |
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| 81 | |
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| 82 | int MAIN(int argc, char **argv) |
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| 83 | { |
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| 84 | DH *dh=NULL; |
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| 85 | int ret=1,num=DEFBITS; |
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| 86 | int g=2; |
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| 87 | char *outfile=NULL; |
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| 88 | char *inrand=NULL; |
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| 89 | BIO *out=NULL; |
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| 90 | |
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| 91 | apps_startup(); |
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| 92 | |
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| 93 | if (bio_err == NULL) |
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| 94 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
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| 95 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
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| 96 | |
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| 97 | argv++; |
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| 98 | argc--; |
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| 99 | for (;;) |
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| 100 | { |
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| 101 | if (argc <= 0) break; |
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| 102 | if (strcmp(*argv,"-out") == 0) |
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| 103 | { |
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| 104 | if (--argc < 1) goto bad; |
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| 105 | outfile= *(++argv); |
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| 106 | } |
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| 107 | else if (strcmp(*argv,"-2") == 0) |
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| 108 | g=2; |
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| 109 | /* else if (strcmp(*argv,"-3") == 0) |
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| 110 | g=3; */ |
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| 111 | else if (strcmp(*argv,"-5") == 0) |
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| 112 | g=5; |
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| 113 | else if (strcmp(*argv,"-rand") == 0) |
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| 114 | { |
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| 115 | if (--argc < 1) goto bad; |
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| 116 | inrand= *(++argv); |
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| 117 | } |
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| 118 | else |
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| 119 | break; |
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| 120 | argv++; |
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| 121 | argc--; |
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| 122 | } |
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| 123 | if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) |
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| 124 | { |
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| 125 | bad: |
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| 126 | BIO_printf(bio_err,"usage: gendh [args] [numbits]\n"); |
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| 127 | BIO_printf(bio_err," -out file - output the key to 'file\n"); |
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| 128 | BIO_printf(bio_err," -2 use 2 as the generator value\n"); |
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| 129 | /* BIO_printf(bio_err," -3 use 3 as the generator value\n"); */ |
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| 130 | BIO_printf(bio_err," -5 use 5 as the generator value\n"); |
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| 131 | BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); |
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| 132 | BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); |
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| 133 | BIO_printf(bio_err," the random number generator\n"); |
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| 134 | goto end; |
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| 135 | } |
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| 136 | |
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| 137 | out=BIO_new(BIO_s_file()); |
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| 138 | if (out == NULL) |
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| 139 | { |
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| 140 | ERR_print_errors(bio_err); |
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| 141 | goto end; |
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| 142 | } |
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| 143 | |
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| 144 | if (outfile == NULL) |
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| 145 | { |
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| 146 | BIO_set_fp(out,stdout,BIO_NOCLOSE); |
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| 147 | #ifdef VMS |
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| 148 | { |
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| 149 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
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| 150 | out = BIO_push(tmpbio, out); |
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| 151 | } |
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| 152 | #endif |
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| 153 | } |
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| 154 | else |
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| 155 | { |
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| 156 | if (BIO_write_filename(out,outfile) <= 0) |
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| 157 | { |
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| 158 | perror(outfile); |
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| 159 | goto end; |
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| 160 | } |
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| 161 | } |
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| 162 | |
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| 163 | if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) |
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| 164 | { |
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| 165 | BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); |
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| 166 | } |
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| 167 | if (inrand != NULL) |
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| 168 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", |
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| 169 | app_RAND_load_files(inrand)); |
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| 170 | |
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| 171 | BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g); |
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| 172 | BIO_printf(bio_err,"This is going to take a long time\n"); |
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| 173 | dh=DH_generate_parameters(num,g,dh_cb,bio_err); |
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| 174 | |
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| 175 | if (dh == NULL) goto end; |
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| 176 | |
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| 177 | app_RAND_write_file(NULL, bio_err); |
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| 178 | |
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| 179 | if (!PEM_write_bio_DHparams(out,dh)) |
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| 180 | goto end; |
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| 181 | ret=0; |
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| 182 | end: |
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| 183 | if (ret != 0) |
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| 184 | ERR_print_errors(bio_err); |
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| 185 | if (out != NULL) BIO_free_all(out); |
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| 186 | if (dh != NULL) DH_free(dh); |
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| 187 | EXIT(ret); |
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| 188 | } |
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| 189 | |
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| 190 | static void MS_CALLBACK dh_cb(int p, int n, void *arg) |
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| 191 | { |
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| 192 | char c='*'; |
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| 193 | |
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| 194 | if (p == 0) c='.'; |
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| 195 | if (p == 1) c='+'; |
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| 196 | if (p == 2) c='*'; |
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| 197 | if (p == 3) c='\n'; |
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| 198 | BIO_write((BIO *)arg,&c,1); |
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| 199 | (void)BIO_flush((BIO *)arg); |
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| 200 | #ifdef LINT |
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| 201 | p=n; |
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| 202 | #endif |
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| 203 | } |
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| 204 | #endif |
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