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1 /* apps/dsaparam.c */ |
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2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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3 * All rights reserved. |
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4 * |
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5 * This package is an SSL implementation written |
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6 * by Eric Young (eay@cryptsoft.com). |
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7 * The implementation was written so as to conform with Netscapes SSL. |
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8 * |
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9 * This library is free for commercial and non-commercial use as long as |
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10 * the following conditions are aheared to. The following conditions |
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11 * apply to all code found in this distribution, be it the RC4, RSA, |
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12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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13 * included with this distribution is covered by the same copyright terms |
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14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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15 * |
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16 * Copyright remains Eric Young's, and as such any Copyright notices in |
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17 * the code are not to be removed. |
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18 * If this package is used in a product, Eric Young should be given attribution |
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19 * as the author of the parts of the library used. |
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20 * This can be in the form of a textual message at program startup or |
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21 * in documentation (online or textual) provided with the package. |
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22 * |
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23 * Redistribution and use in source and binary forms, with or without |
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24 * modification, are permitted provided that the following conditions |
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25 * are met: |
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26 * 1. Redistributions of source code must retain the copyright |
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27 * notice, this list of conditions and the following disclaimer. |
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28 * 2. Redistributions in binary form must reproduce the above copyright |
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29 * notice, this list of conditions and the following disclaimer in the |
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30 * documentation and/or other materials provided with the distribution. |
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31 * 3. All advertising materials mentioning features or use of this software |
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32 * must display the following acknowledgement: |
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33 * "This product includes cryptographic software written by |
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34 * Eric Young (eay@cryptsoft.com)" |
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35 * The word 'cryptographic' can be left out if the rouines from the library |
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36 * being used are not cryptographic related :-). |
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37 * 4. If you include any Windows specific code (or a derivative thereof) from |
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38 * the apps directory (application code) you must include an acknowledgement: |
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39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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40 * |
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41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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51 * SUCH DAMAGE. |
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52 * |
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53 * The licence and distribution terms for any publically available version or |
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54 * derivative of this code cannot be changed. i.e. this code cannot simply be |
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55 * copied and put under another distribution licence |
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56 * [including the GNU Public Licence.] |
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57 */ |
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58 |
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59 #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */ |
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60 /* Until the key-gen callbacks are modified to use newer prototypes, we allow |
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61 * deprecated functions for openssl-internal code */ |
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62 #ifdef OPENSSL_NO_DEPRECATED |
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63 #undef OPENSSL_NO_DEPRECATED |
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64 #endif |
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65 |
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66 #ifndef OPENSSL_NO_DSA |
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67 #include <assert.h> |
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68 #include <stdio.h> |
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69 #include <stdlib.h> |
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70 #include <time.h> |
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71 #include <string.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/err.h> |
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75 #include <openssl/bn.h> |
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76 #include <openssl/dsa.h> |
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77 #include <openssl/x509.h> |
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78 #include <openssl/pem.h> |
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79 |
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80 #undef PROG |
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81 #define PROG dsaparam_main |
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82 |
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83 /* -inform arg - input format - default PEM (DER or PEM) |
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84 * -outform arg - output format - default PEM |
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85 * -in arg - input file - default stdin |
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86 * -out arg - output file - default stdout |
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87 * -noout |
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88 * -text |
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89 * -C |
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90 * -noout |
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91 * -genkey |
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92 * #ifdef GENCB_TEST |
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93 * -timebomb n - interrupt keygen after <n> seconds |
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94 * #endif |
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95 */ |
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96 |
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97 #ifdef GENCB_TEST |
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98 |
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99 static int stop_keygen_flag = 0; |
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100 |
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101 static void timebomb_sigalarm(int foo) |
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102 { |
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103 stop_keygen_flag = 1; |
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104 } |
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105 |
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106 #endif |
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107 |
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108 static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb); |
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109 |
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110 |
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111 |
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112 int MAIN(int, char **); |
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113 |
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114 int MAIN(int argc, char **argv) |
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115 { |
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116 #ifndef OPENSSL_NO_ENGINE |
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117 ENGINE *e = NULL; |
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118 #endif |
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119 DSA *dsa=NULL; |
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120 int i,badops=0,text=0; |
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121 BIO *in=NULL,*out=NULL; |
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122 int informat,outformat,noout=0,C=0,ret=1; |
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123 char *infile,*outfile,*prog,*inrand=NULL; |
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124 int numbits= -1,num,genkey=0; |
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125 int need_rand=0; |
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126 #ifndef OPENSSL_NO_ENGINE |
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127 char *engine=NULL; |
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128 #endif |
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129 #ifdef GENCB_TEST |
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130 int timebomb=0; |
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131 #endif |
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132 |
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133 apps_startup(); |
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134 |
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135 if (bio_err == NULL) |
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136 if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
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137 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
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138 |
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139 |
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140 if (!load_config(bio_err, NULL)) |
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141 goto end; |
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142 |
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143 infile=NULL; |
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144 outfile=NULL; |
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145 informat=FORMAT_PEM; |
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146 outformat=FORMAT_PEM; |
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147 |
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148 prog=argv[0]; |
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149 argc--; |
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150 argv++; |
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151 while (argc >= 1) |
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152 { |
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153 if (strcmp(*argv,"-inform") == 0) |
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154 { |
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155 if (--argc < 1) goto bad; |
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156 informat=str2fmt(*(++argv)); |
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157 } |
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158 else if (strcmp(*argv,"-outform") == 0) |
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159 { |
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160 if (--argc < 1) goto bad; |
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161 outformat=str2fmt(*(++argv)); |
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162 } |
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163 else if (strcmp(*argv,"-in") == 0) |
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164 { |
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165 if (--argc < 1) goto bad; |
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166 infile= *(++argv); |
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167 } |
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168 else if (strcmp(*argv,"-out") == 0) |
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169 { |
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170 if (--argc < 1) goto bad; |
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171 outfile= *(++argv); |
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172 } |
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173 #ifndef OPENSSL_NO_ENGINE |
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174 else if(strcmp(*argv, "-engine") == 0) |
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175 { |
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176 if (--argc < 1) goto bad; |
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177 engine = *(++argv); |
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178 } |
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179 #endif |
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180 #ifdef GENCB_TEST |
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181 else if(strcmp(*argv, "-timebomb") == 0) |
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182 { |
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183 if (--argc < 1) goto bad; |
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184 timebomb = atoi(*(++argv)); |
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185 } |
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186 #endif |
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187 else if (strcmp(*argv,"-text") == 0) |
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188 text=1; |
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189 else if (strcmp(*argv,"-C") == 0) |
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190 C=1; |
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191 else if (strcmp(*argv,"-genkey") == 0) |
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192 { |
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193 genkey=1; |
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194 need_rand=1; |
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195 } |
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196 else if (strcmp(*argv,"-rand") == 0) |
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197 { |
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198 if (--argc < 1) goto bad; |
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199 inrand= *(++argv); |
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200 need_rand=1; |
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201 } |
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202 else if (strcmp(*argv,"-noout") == 0) |
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203 noout=1; |
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204 else if (sscanf(*argv,"%d",&num) == 1) |
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205 { |
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206 /* generate a key */ |
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207 numbits=num; |
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208 need_rand=1; |
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209 } |
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210 else |
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211 { |
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212 BIO_printf(bio_err,"unknown option %s\n",*argv); |
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213 badops=1; |
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214 break; |
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215 } |
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216 argc--; |
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217 argv++; |
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218 } |
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219 |
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220 if (badops) |
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221 { |
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222 bad: |
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223 BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog); |
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224 BIO_printf(bio_err,"where options are\n"); |
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225 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); |
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226 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); |
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227 BIO_printf(bio_err," -in arg input file\n"); |
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228 BIO_printf(bio_err," -out arg output file\n"); |
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229 BIO_printf(bio_err," -text print as text\n"); |
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230 BIO_printf(bio_err," -C Output C code\n"); |
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231 BIO_printf(bio_err," -noout no output\n"); |
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232 BIO_printf(bio_err," -genkey generate a DSA key\n"); |
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233 BIO_printf(bio_err," -rand files to use for random number input\n"); |
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234 #ifndef OPENSSL_NO_ENGINE |
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235 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); |
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236 #endif |
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237 #ifdef GENCB_TEST |
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238 BIO_printf(bio_err," -timebomb n interrupt keygen after <n> seconds\n"); |
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239 #endif |
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240 BIO_printf(bio_err," number number of bits to use for generating private key\n"); |
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241 goto end; |
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242 } |
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243 |
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244 ERR_load_crypto_strings(); |
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245 |
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246 in=BIO_new(BIO_s_file()); |
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247 out=BIO_new(BIO_s_file()); |
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248 if ((in == NULL) || (out == NULL)) |
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249 { |
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250 ERR_print_errors(bio_err); |
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251 goto end; |
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252 } |
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253 |
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254 if (infile == NULL) |
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255 BIO_set_fp(in,stdin,BIO_NOCLOSE); |
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256 |
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257 else |
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258 { |
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259 if (BIO_read_filename(in,infile) <= 0) |
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260 { |
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261 perror(infile); |
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262 goto end; |
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263 } |
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264 } |
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265 if (outfile == NULL) |
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266 { |
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267 BIO_set_fp(out,stdout,BIO_NOCLOSE); |
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268 |
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269 #ifdef OPENSSL_SYS_VMS |
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270 { |
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271 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
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272 out = BIO_push(tmpbio, out); |
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273 } |
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274 #endif |
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275 } |
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276 else |
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277 { |
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278 if (BIO_write_filename(out,outfile) <= 0) |
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279 { |
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280 perror(outfile); |
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281 goto end; |
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282 } |
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283 } |
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284 |
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285 #ifndef OPENSSL_NO_ENGINE |
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286 e = setup_engine(bio_err, engine, 0); |
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287 #endif |
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288 |
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289 if (need_rand) |
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290 { |
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291 app_RAND_load_file(NULL, bio_err, (inrand != NULL)); |
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292 if (inrand != NULL) |
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293 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", |
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294 app_RAND_load_files(inrand)); |
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295 } |
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296 |
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297 if (numbits > 0) |
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298 { |
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299 BN_GENCB cb; |
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300 BN_GENCB_set(&cb, dsa_cb, bio_err); |
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301 assert(need_rand); |
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302 dsa = DSA_new(); |
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303 if(!dsa) |
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304 { |
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305 BIO_printf(bio_err,"Error allocating DSA object\n"); |
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306 goto end; |
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307 } |
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308 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num); |
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309 BIO_printf(bio_err,"This could take some time\n"); |
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310 #ifdef GENCB_TEST |
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311 if(timebomb > 0) |
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312 { |
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313 struct sigaction act; |
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314 act.sa_handler = timebomb_sigalarm; |
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315 act.sa_flags = 0; |
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316 BIO_printf(bio_err,"(though I'll stop it if not done within %d secs)\n", |
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317 timebomb); |
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318 if(sigaction(SIGALRM, &act, NULL) != 0) |
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319 { |
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320 BIO_printf(bio_err,"Error, couldn't set SIGALRM handler\n"); |
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321 goto end; |
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322 } |
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323 alarm(timebomb); |
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324 } |
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325 #endif |
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326 if(!DSA_generate_parameters_ex(dsa,num,NULL,0,NULL,NULL, &cb)) |
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327 { |
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328 #ifdef GENCB_TEST |
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329 if(stop_keygen_flag) |
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330 { |
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331 BIO_printf(bio_err,"DSA key generation time-stopped\n"); |
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332 /* This is an asked-for behaviour! */ |
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333 ret = 0; |
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334 goto end; |
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335 } |
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336 #endif |
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337 BIO_printf(bio_err,"Error, DSA key generation failed\n"); |
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338 goto end; |
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339 } |
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340 } |
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341 else if (informat == FORMAT_ASN1) |
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342 dsa=d2i_DSAparams_bio(in,NULL); |
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343 else if (informat == FORMAT_PEM) |
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344 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL); |
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345 else |
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346 { |
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347 BIO_printf(bio_err,"bad input format specified\n"); |
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348 goto end; |
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349 } |
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350 if (dsa == NULL) |
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351 { |
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352 BIO_printf(bio_err,"unable to load DSA parameters\n"); |
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353 ERR_print_errors(bio_err); |
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354 goto end; |
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355 } |
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356 |
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357 if (text) |
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358 { |
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359 DSAparams_print(out,dsa); |
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360 } |
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361 |
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362 if (C) |
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363 { |
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364 unsigned char *data; |
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365 int l,len,bits_p,bits_q,bits_g; |
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366 |
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367 len=BN_num_bytes(dsa->p); |
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368 bits_p=BN_num_bits(dsa->p); |
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369 bits_q=BN_num_bits(dsa->q); |
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370 bits_g=BN_num_bits(dsa->g); |
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371 data=(unsigned char *)OPENSSL_malloc(len+20); |
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372 if (data == NULL) |
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373 { |
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374 perror("OPENSSL_malloc"); |
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375 goto end; |
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376 } |
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377 l=BN_bn2bin(dsa->p,data); |
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378 printf("static unsigned char dsa%d_p[]={",bits_p); |
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379 for (i=0; i<l; i++) |
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380 { |
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381 if ((i%12) == 0) printf("\n\t"); |
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382 printf("0x%02X,",data[i]); |
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383 } |
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384 printf("\n\t};\n"); |
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385 |
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386 l=BN_bn2bin(dsa->q,data); |
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387 printf("static unsigned char dsa%d_q[]={",bits_p); |
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388 for (i=0; i<l; i++) |
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389 { |
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390 if ((i%12) == 0) printf("\n\t"); |
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391 printf("0x%02X,",data[i]); |
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392 } |
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393 printf("\n\t};\n"); |
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394 |
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395 l=BN_bn2bin(dsa->g,data); |
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396 printf("static unsigned char dsa%d_g[]={",bits_p); |
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397 for (i=0; i<l; i++) |
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398 { |
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399 if ((i%12) == 0) printf("\n\t"); |
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400 printf("0x%02X,",data[i]); |
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401 } |
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402 printf("\n\t};\n\n"); |
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403 |
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404 printf("DSA *get_dsa%d()\n\t{\n",bits_p); |
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405 printf("\tDSA *dsa;\n\n"); |
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406 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n"); |
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407 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n", |
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408 bits_p,bits_p); |
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409 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n", |
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410 bits_p,bits_p); |
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411 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n", |
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412 bits_p,bits_p); |
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413 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n"); |
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414 printf("\t\t{ DSA_free(dsa); return(NULL); }\n"); |
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415 printf("\treturn(dsa);\n\t}\n"); |
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416 |
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417 } |
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418 |
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419 |
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420 if (!noout) |
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421 { |
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422 if (outformat == FORMAT_ASN1) |
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423 i=i2d_DSAparams_bio(out,dsa); |
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424 else if (outformat == FORMAT_PEM) |
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425 i=PEM_write_bio_DSAparams(out,dsa); |
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426 else { |
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427 BIO_printf(bio_err,"bad output format specified for outfile\n"); |
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428 goto end; |
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429 } |
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430 if (!i) |
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431 { |
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432 BIO_printf(bio_err,"unable to write DSA parameters\n"); |
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433 ERR_print_errors(bio_err); |
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434 goto end; |
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435 } |
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436 } |
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437 if (genkey) |
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438 { |
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439 DSA *dsakey; |
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440 |
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441 assert(need_rand); |
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442 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end; |
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443 if (!DSA_generate_key(dsakey)) goto end; |
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444 if (outformat == FORMAT_ASN1) |
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445 i=i2d_DSAPrivateKey_bio(out,dsakey); |
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446 else if (outformat == FORMAT_PEM) |
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447 i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL); |
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448 else { |
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449 BIO_printf(bio_err,"bad output format specified for outfile\n"); |
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450 goto end; |
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451 } |
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452 DSA_free(dsakey); |
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453 } |
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454 if (need_rand) |
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455 app_RAND_write_file(NULL, bio_err); |
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456 ret=0; |
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457 end: |
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458 if (in != NULL) BIO_free(in); |
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459 if (out != NULL) BIO_free_all(out); |
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460 if (dsa != NULL) DSA_free(dsa); |
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461 apps_shutdown(); |
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462 OPENSSL_EXIT(ret); |
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463 } |
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464 |
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465 static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb) |
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466 { |
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467 char c='*'; |
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468 |
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469 if (p == 0) c='.'; |
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470 if (p == 1) c='+'; |
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471 if (p == 2) c='*'; |
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472 if (p == 3) c='\n'; |
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473 BIO_write(cb->arg,&c,1); |
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474 (void)BIO_flush(cb->arg); |
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475 #ifdef LINT |
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476 p=n; |
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477 #endif |
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478 #ifdef GENCB_TEST |
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479 if(stop_keygen_flag) |
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480 return 0; |
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481 #endif |
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482 return 1; |
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483 } |
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484 #endif |