1 | #include <machine/rtems-bsd-user-space.h> |
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2 | |
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3 | /* |
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4 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. |
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5 | * |
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6 | * Licensed under the OpenSSL license (the "License"). You may not use |
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7 | * this file except in compliance with the License. You can obtain a copy |
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8 | * in the file LICENSE in the source distribution or at |
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9 | * https://www.openssl.org/source/license.html |
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10 | */ |
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11 | |
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12 | #include <openssl/opensslconf.h> |
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13 | #ifdef OPENSSL_NO_DSA |
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14 | NON_EMPTY_TRANSLATION_UNIT |
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15 | #else |
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16 | |
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17 | # include <stdio.h> |
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18 | # include <stdlib.h> |
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19 | # include <time.h> |
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20 | # include <string.h> |
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21 | # include "apps.h" |
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22 | # include "progs.h" |
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23 | # include <openssl/bio.h> |
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24 | # include <openssl/err.h> |
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25 | # include <openssl/bn.h> |
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26 | # include <openssl/dsa.h> |
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27 | # include <openssl/x509.h> |
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28 | # include <openssl/pem.h> |
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29 | |
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30 | static int dsa_cb(int p, int n, BN_GENCB *cb); |
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31 | |
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32 | typedef enum OPTION_choice { |
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33 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, |
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34 | OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT, OPT_C, |
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35 | OPT_NOOUT, OPT_GENKEY, OPT_ENGINE, OPT_R_ENUM |
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36 | } OPTION_CHOICE; |
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37 | |
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38 | const OPTIONS dsaparam_options[] = { |
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39 | {"help", OPT_HELP, '-', "Display this summary"}, |
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40 | {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"}, |
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41 | {"in", OPT_IN, '<', "Input file"}, |
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42 | {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"}, |
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43 | {"out", OPT_OUT, '>', "Output file"}, |
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44 | {"text", OPT_TEXT, '-', "Print as text"}, |
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45 | {"C", OPT_C, '-', "Output C code"}, |
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46 | {"noout", OPT_NOOUT, '-', "No output"}, |
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47 | {"genkey", OPT_GENKEY, '-', "Generate a DSA key"}, |
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48 | OPT_R_OPTIONS, |
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49 | # ifndef OPENSSL_NO_ENGINE |
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50 | {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"}, |
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51 | # endif |
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52 | {NULL} |
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53 | }; |
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54 | |
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55 | int dsaparam_main(int argc, char **argv) |
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56 | { |
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57 | ENGINE *e = NULL; |
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58 | DSA *dsa = NULL; |
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59 | BIO *in = NULL, *out = NULL; |
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60 | BN_GENCB *cb = NULL; |
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61 | int numbits = -1, num = 0, genkey = 0; |
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62 | int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0, C = 0; |
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63 | int ret = 1, i, text = 0, private = 0; |
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64 | char *infile = NULL, *outfile = NULL, *prog; |
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65 | OPTION_CHOICE o; |
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66 | |
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67 | prog = opt_init(argc, argv, dsaparam_options); |
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68 | while ((o = opt_next()) != OPT_EOF) { |
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69 | switch (o) { |
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70 | case OPT_EOF: |
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71 | case OPT_ERR: |
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72 | opthelp: |
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73 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); |
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74 | goto end; |
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75 | case OPT_HELP: |
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76 | opt_help(dsaparam_options); |
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77 | ret = 0; |
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78 | goto end; |
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79 | case OPT_INFORM: |
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80 | if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat)) |
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81 | goto opthelp; |
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82 | break; |
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83 | case OPT_IN: |
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84 | infile = opt_arg(); |
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85 | break; |
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86 | case OPT_OUTFORM: |
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87 | if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat)) |
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88 | goto opthelp; |
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89 | break; |
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90 | case OPT_OUT: |
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91 | outfile = opt_arg(); |
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92 | break; |
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93 | case OPT_ENGINE: |
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94 | e = setup_engine(opt_arg(), 0); |
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95 | break; |
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96 | case OPT_TEXT: |
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97 | text = 1; |
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98 | break; |
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99 | case OPT_C: |
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100 | C = 1; |
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101 | break; |
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102 | case OPT_GENKEY: |
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103 | genkey = 1; |
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104 | break; |
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105 | case OPT_R_CASES: |
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106 | if (!opt_rand(o)) |
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107 | goto end; |
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108 | break; |
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109 | case OPT_NOOUT: |
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110 | noout = 1; |
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111 | break; |
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112 | } |
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113 | } |
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114 | argc = opt_num_rest(); |
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115 | argv = opt_rest(); |
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116 | |
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117 | if (argc == 1) { |
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118 | if (!opt_int(argv[0], &num) || num < 0) |
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119 | goto end; |
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120 | /* generate a key */ |
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121 | numbits = num; |
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122 | } |
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123 | private = genkey ? 1 : 0; |
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124 | |
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125 | in = bio_open_default(infile, 'r', informat); |
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126 | if (in == NULL) |
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127 | goto end; |
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128 | out = bio_open_owner(outfile, outformat, private); |
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129 | if (out == NULL) |
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130 | goto end; |
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131 | |
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132 | if (numbits > 0) { |
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133 | if (numbits > OPENSSL_DSA_MAX_MODULUS_BITS) |
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134 | BIO_printf(bio_err, |
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135 | "Warning: It is not recommended to use more than %d bit for DSA keys.\n" |
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136 | " Your key size is %d! Larger key size may behave not as expected.\n", |
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137 | OPENSSL_DSA_MAX_MODULUS_BITS, numbits); |
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138 | |
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139 | cb = BN_GENCB_new(); |
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140 | if (cb == NULL) { |
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141 | BIO_printf(bio_err, "Error allocating BN_GENCB object\n"); |
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142 | goto end; |
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143 | } |
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144 | BN_GENCB_set(cb, dsa_cb, bio_err); |
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145 | dsa = DSA_new(); |
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146 | if (dsa == NULL) { |
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147 | BIO_printf(bio_err, "Error allocating DSA object\n"); |
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148 | goto end; |
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149 | } |
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150 | BIO_printf(bio_err, "Generating DSA parameters, %d bit long prime\n", |
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151 | num); |
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152 | BIO_printf(bio_err, "This could take some time\n"); |
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153 | if (!DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, cb)) { |
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154 | ERR_print_errors(bio_err); |
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155 | BIO_printf(bio_err, "Error, DSA key generation failed\n"); |
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156 | goto end; |
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157 | } |
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158 | } else if (informat == FORMAT_ASN1) { |
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159 | dsa = d2i_DSAparams_bio(in, NULL); |
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160 | } else { |
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161 | dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL); |
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162 | } |
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163 | if (dsa == NULL) { |
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164 | BIO_printf(bio_err, "unable to load DSA parameters\n"); |
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165 | ERR_print_errors(bio_err); |
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166 | goto end; |
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167 | } |
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168 | |
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169 | if (text) { |
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170 | DSAparams_print(out, dsa); |
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171 | } |
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172 | |
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173 | if (C) { |
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174 | const BIGNUM *p = NULL, *q = NULL, *g = NULL; |
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175 | unsigned char *data; |
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176 | int len, bits_p; |
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177 | |
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178 | DSA_get0_pqg(dsa, &p, &q, &g); |
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179 | len = BN_num_bytes(p); |
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180 | bits_p = BN_num_bits(p); |
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181 | |
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182 | data = app_malloc(len + 20, "BN space"); |
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183 | |
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184 | BIO_printf(bio_out, "static DSA *get_dsa%d(void)\n{\n", bits_p); |
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185 | print_bignum_var(bio_out, p, "dsap", bits_p, data); |
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186 | print_bignum_var(bio_out, q, "dsaq", bits_p, data); |
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187 | print_bignum_var(bio_out, g, "dsag", bits_p, data); |
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188 | BIO_printf(bio_out, " DSA *dsa = DSA_new();\n" |
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189 | " BIGNUM *p, *q, *g;\n" |
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190 | "\n"); |
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191 | BIO_printf(bio_out, " if (dsa == NULL)\n" |
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192 | " return NULL;\n"); |
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193 | BIO_printf(bio_out, " if (!DSA_set0_pqg(dsa, p = BN_bin2bn(dsap_%d, sizeof(dsap_%d), NULL),\n", |
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194 | bits_p, bits_p); |
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195 | BIO_printf(bio_out, " q = BN_bin2bn(dsaq_%d, sizeof(dsaq_%d), NULL),\n", |
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196 | bits_p, bits_p); |
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197 | BIO_printf(bio_out, " g = BN_bin2bn(dsag_%d, sizeof(dsag_%d), NULL))) {\n", |
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198 | bits_p, bits_p); |
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199 | BIO_printf(bio_out, " DSA_free(dsa);\n" |
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200 | " BN_free(p);\n" |
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201 | " BN_free(q);\n" |
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202 | " BN_free(g);\n" |
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203 | " return NULL;\n" |
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204 | " }\n" |
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205 | " return dsa;\n}\n"); |
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206 | OPENSSL_free(data); |
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207 | } |
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208 | |
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209 | if (outformat == FORMAT_ASN1 && genkey) |
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210 | noout = 1; |
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211 | |
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212 | if (!noout) { |
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213 | if (outformat == FORMAT_ASN1) |
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214 | i = i2d_DSAparams_bio(out, dsa); |
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215 | else |
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216 | i = PEM_write_bio_DSAparams(out, dsa); |
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217 | if (!i) { |
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218 | BIO_printf(bio_err, "unable to write DSA parameters\n"); |
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219 | ERR_print_errors(bio_err); |
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220 | goto end; |
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221 | } |
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222 | } |
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223 | if (genkey) { |
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224 | DSA *dsakey; |
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225 | |
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226 | if ((dsakey = DSAparams_dup(dsa)) == NULL) |
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227 | goto end; |
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228 | if (!DSA_generate_key(dsakey)) { |
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229 | ERR_print_errors(bio_err); |
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230 | DSA_free(dsakey); |
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231 | goto end; |
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232 | } |
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233 | assert(private); |
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234 | if (outformat == FORMAT_ASN1) |
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235 | i = i2d_DSAPrivateKey_bio(out, dsakey); |
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236 | else |
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237 | i = PEM_write_bio_DSAPrivateKey(out, dsakey, NULL, NULL, 0, NULL, |
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238 | NULL); |
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239 | DSA_free(dsakey); |
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240 | } |
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241 | ret = 0; |
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242 | end: |
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243 | BN_GENCB_free(cb); |
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244 | BIO_free(in); |
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245 | BIO_free_all(out); |
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246 | DSA_free(dsa); |
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247 | release_engine(e); |
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248 | return ret; |
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249 | } |
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250 | |
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251 | static int dsa_cb(int p, int n, BN_GENCB *cb) |
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252 | { |
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253 | static const char symbols[] = ".+*\n"; |
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254 | char c = (p >= 0 && (size_t)p < sizeof(symbols) - 1) ? symbols[p] : '?'; |
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255 | |
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256 | BIO_write(BN_GENCB_get_arg(cb), &c, 1); |
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257 | (void)BIO_flush(BN_GENCB_get_arg(cb)); |
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258 | return 1; |
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259 | } |
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260 | #endif |
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