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 OPENSSL_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 | ENGINE *e = NULL; |
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85 | DH *dh=NULL; |
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86 | int ret=1,num=DEFBITS; |
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87 | int g=2; |
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88 | char *outfile=NULL; |
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89 | char *inrand=NULL; |
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90 | char *engine=NULL; |
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91 | BIO *out=NULL; |
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92 | |
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93 | apps_startup(); |
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94 | |
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95 | if (bio_err == NULL) |
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96 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
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97 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
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98 | |
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99 | if (!load_config(bio_err, NULL)) |
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100 | goto end; |
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101 | |
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102 | argv++; |
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103 | argc--; |
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104 | for (;;) |
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105 | { |
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106 | if (argc <= 0) break; |
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107 | if (strcmp(*argv,"-out") == 0) |
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108 | { |
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109 | if (--argc < 1) goto bad; |
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110 | outfile= *(++argv); |
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111 | } |
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112 | else if (strcmp(*argv,"-2") == 0) |
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113 | g=2; |
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114 | /* else if (strcmp(*argv,"-3") == 0) |
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115 | g=3; */ |
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116 | else if (strcmp(*argv,"-5") == 0) |
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117 | g=5; |
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118 | else if (strcmp(*argv,"-engine") == 0) |
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119 | { |
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120 | if (--argc < 1) goto bad; |
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121 | engine= *(++argv); |
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122 | } |
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123 | else if (strcmp(*argv,"-rand") == 0) |
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124 | { |
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125 | if (--argc < 1) goto bad; |
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126 | inrand= *(++argv); |
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127 | } |
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128 | else |
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129 | break; |
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130 | argv++; |
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131 | argc--; |
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132 | } |
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133 | if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) |
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134 | { |
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135 | bad: |
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136 | BIO_printf(bio_err,"usage: gendh [args] [numbits]\n"); |
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137 | BIO_printf(bio_err," -out file - output the key to 'file\n"); |
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138 | BIO_printf(bio_err," -2 - use 2 as the generator value\n"); |
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139 | /* BIO_printf(bio_err," -3 - use 3 as the generator value\n"); */ |
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140 | BIO_printf(bio_err," -5 - use 5 as the generator value\n"); |
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141 | BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n"); |
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142 | BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); |
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143 | BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); |
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144 | BIO_printf(bio_err," the random number generator\n"); |
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145 | goto end; |
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146 | } |
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147 | |
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148 | e = setup_engine(bio_err, engine, 0); |
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149 | |
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150 | out=BIO_new(BIO_s_file()); |
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151 | if (out == NULL) |
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152 | { |
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153 | ERR_print_errors(bio_err); |
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154 | goto end; |
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155 | } |
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156 | |
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157 | if (outfile == NULL) |
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158 | { |
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159 | BIO_set_fp(out,stdout,BIO_NOCLOSE); |
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160 | #ifdef OPENSSL_SYS_VMS |
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161 | { |
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162 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
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163 | out = BIO_push(tmpbio, out); |
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164 | } |
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165 | #endif |
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166 | } |
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167 | else |
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168 | { |
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169 | if (BIO_write_filename(out,outfile) <= 0) |
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170 | { |
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171 | perror(outfile); |
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172 | goto end; |
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173 | } |
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174 | } |
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175 | |
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176 | if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) |
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177 | { |
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178 | BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); |
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179 | } |
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180 | if (inrand != NULL) |
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181 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", |
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182 | app_RAND_load_files(inrand)); |
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183 | |
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184 | BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g); |
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185 | BIO_printf(bio_err,"This is going to take a long time\n"); |
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186 | dh=DH_generate_parameters(num,g,dh_cb,bio_err); |
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187 | |
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188 | if (dh == NULL) goto end; |
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189 | |
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190 | app_RAND_write_file(NULL, bio_err); |
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191 | |
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192 | if (!PEM_write_bio_DHparams(out,dh)) |
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193 | goto end; |
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194 | ret=0; |
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195 | end: |
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196 | if (ret != 0) |
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197 | ERR_print_errors(bio_err); |
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198 | if (out != NULL) BIO_free_all(out); |
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199 | if (dh != NULL) DH_free(dh); |
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200 | apps_shutdown(); |
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201 | OPENSSL_EXIT(ret); |
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202 | } |
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203 | |
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204 | static void MS_CALLBACK dh_cb(int p, int n, void *arg) |
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205 | { |
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206 | char c='*'; |
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207 | |
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208 | if (p == 0) c='.'; |
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209 | if (p == 1) c='+'; |
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210 | if (p == 2) c='*'; |
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211 | if (p == 3) c='\n'; |
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212 | BIO_write((BIO *)arg,&c,1); |
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213 | (void)BIO_flush((BIO *)arg); |
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214 | #ifdef LINT |
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215 | p=n; |
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216 | #endif |
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217 | } |
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218 | #endif |
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