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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 #include <openssl/opensslconf.h> |
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61 /* Until the key-gen callbacks are modified to use newer prototypes, we allow |
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62 * deprecated functions for openssl-internal code */ |
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63 #ifdef OPENSSL_NO_DEPRECATED |
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64 #undef OPENSSL_NO_DEPRECATED |
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65 #endif |
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66 |
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67 #ifndef OPENSSL_NO_DH |
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68 #include <stdio.h> |
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69 #include <string.h> |
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70 #include <sys/types.h> |
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71 #include <sys/stat.h> |
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72 #include "apps.h" |
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73 #include <openssl/bio.h> |
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74 #include <openssl/rand.h> |
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75 #include <openssl/err.h> |
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76 #include <openssl/bn.h> |
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77 #include <openssl/dh.h> |
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78 #include <openssl/x509.h> |
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79 #include <openssl/pem.h> |
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80 |
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81 #define DEFBITS 512 |
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82 #undef PROG |
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83 #define PROG gendh_main |
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84 |
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85 static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb); |
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86 |
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87 |
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88 int MAIN(int, char **); |
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89 |
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90 int MAIN(int argc, char **argv) |
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91 { |
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92 BN_GENCB cb; |
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93 #ifndef OPENSSL_NO_ENGINE |
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94 ENGINE *e = NULL; |
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95 #endif |
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96 DH *dh=NULL; |
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97 int ret=1,num=DEFBITS; |
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98 int g=2; |
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99 char *outfile=NULL; |
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100 char *inrand=NULL; |
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101 #ifndef OPENSSL_NO_ENGINE |
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102 char *engine=NULL; |
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103 #endif |
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104 BIO *out=NULL; |
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105 |
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106 apps_startup(); |
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107 |
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108 BN_GENCB_set(&cb, dh_cb, bio_err); |
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109 if (bio_err == NULL) |
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110 if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
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111 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
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112 |
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113 if (!load_config(bio_err, NULL)) |
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114 goto end; |
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115 |
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116 argv++; |
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117 argc--; |
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118 for (;;) |
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119 { |
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120 if (argc <= 0) break; |
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121 if (strcmp(*argv,"-out") == 0) |
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122 { |
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123 if (--argc < 1) goto bad; |
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124 outfile= *(++argv); |
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125 } |
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126 else if (strcmp(*argv,"-2") == 0) |
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127 g=2; |
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128 /* else if (strcmp(*argv,"-3") == 0) |
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129 g=3; */ |
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130 else if (strcmp(*argv,"-5") == 0) |
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131 g=5; |
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132 #ifndef OPENSSL_NO_ENGINE |
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133 else if (strcmp(*argv,"-engine") == 0) |
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134 { |
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135 if (--argc < 1) goto bad; |
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136 engine= *(++argv); |
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137 } |
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138 #endif |
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139 else if (strcmp(*argv,"-rand") == 0) |
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140 { |
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141 if (--argc < 1) goto bad; |
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142 inrand= *(++argv); |
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143 } |
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144 else |
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145 break; |
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146 argv++; |
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147 argc--; |
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148 } |
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149 if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) |
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150 { |
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151 bad: |
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152 BIO_printf(bio_err,"usage: gendh [args] [numbits]\n"); |
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153 BIO_printf(bio_err," -out file - output the key to 'file\n"); |
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154 BIO_printf(bio_err," -2 - use 2 as the generator value\n"); |
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155 /* BIO_printf(bio_err," -3 - use 3 as the generator value\n"); */ |
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156 BIO_printf(bio_err," -5 - use 5 as the generator value\n"); |
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157 #ifndef OPENSSL_NO_ENGINE |
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158 BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n"); |
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159 #endif |
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160 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); |
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161 BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); |
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162 BIO_printf(bio_err," the random number generator\n"); |
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163 goto end; |
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164 } |
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165 |
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166 #ifndef OPENSSL_NO_ENGINE |
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167 e = setup_engine(bio_err, engine, 0); |
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168 #endif |
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169 |
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170 out=BIO_new(BIO_s_file()); |
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171 if (out == NULL) |
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172 { |
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173 ERR_print_errors(bio_err); |
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174 goto end; |
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175 } |
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176 |
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177 if (outfile == NULL) |
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178 { |
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179 BIO_set_fp(out,stdout,BIO_NOCLOSE); |
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180 |
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181 #ifdef OPENSSL_SYS_VMS |
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182 { |
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183 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
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184 out = BIO_push(tmpbio, out); |
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185 } |
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186 #endif |
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187 } |
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188 else |
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189 { |
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190 if (BIO_write_filename(out,outfile) <= 0) |
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191 { |
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192 perror(outfile); |
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193 goto end; |
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194 } |
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195 } |
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196 |
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197 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) |
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198 { |
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199 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); |
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200 } |
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201 if (inrand != NULL) |
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202 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", |
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203 app_RAND_load_files(inrand)); |
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204 |
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205 BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g); |
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206 BIO_printf(bio_err,"This is going to take a long time\n"); |
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207 |
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208 if(((dh = DH_new()) == NULL) || !DH_generate_parameters_ex(dh, num, g, &cb)) |
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209 goto end; |
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210 |
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211 app_RAND_write_file(NULL, bio_err); |
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212 |
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213 if (!PEM_write_bio_DHparams(out,dh)) |
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214 goto end; |
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215 ret=0; |
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216 end: |
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217 if (ret != 0) |
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218 ERR_print_errors(bio_err); |
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219 if (out != NULL) BIO_free_all(out); |
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220 if (dh != NULL) DH_free(dh); |
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221 apps_shutdown(); |
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222 OPENSSL_EXIT(ret); |
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223 } |
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224 |
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225 static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb) |
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226 { |
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227 char c='*'; |
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228 |
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229 if (p == 0) c='.'; |
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230 if (p == 1) c='+'; |
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231 if (p == 2) c='*'; |
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232 if (p == 3) c='\n'; |
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233 BIO_write(cb->arg,&c,1); |
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234 (void)BIO_flush(cb->arg); |
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235 #ifdef LINT |
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236 p=n; |
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237 #endif |
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238 return 1; |
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239 } |
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240 #endif |