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 <string.h> |
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19 | # include <sys/types.h> |
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20 | # include <sys/stat.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 | typedef enum OPTION_choice { |
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31 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, |
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32 | OPT_OUT, OPT_PASSOUT, OPT_ENGINE, OPT_CIPHER, |
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33 | OPT_R_ENUM |
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34 | } OPTION_CHOICE; |
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35 | |
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36 | const OPTIONS gendsa_options[] = { |
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37 | {OPT_HELP_STR, 1, '-', "Usage: %s [args] dsaparam-file\n"}, |
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38 | {OPT_HELP_STR, 1, '-', "Valid options are:\n"}, |
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39 | {"help", OPT_HELP, '-', "Display this summary"}, |
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40 | {"out", OPT_OUT, '>', "Output the key to the specified file"}, |
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41 | {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, |
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42 | OPT_R_OPTIONS, |
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43 | {"", OPT_CIPHER, '-', "Encrypt the output with any supported cipher"}, |
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44 | # ifndef OPENSSL_NO_ENGINE |
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45 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, |
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46 | # endif |
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47 | {NULL} |
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48 | }; |
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49 | |
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50 | int gendsa_main(int argc, char **argv) |
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51 | { |
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52 | ENGINE *e = NULL; |
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53 | BIO *out = NULL, *in = NULL; |
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54 | DSA *dsa = NULL; |
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55 | const EVP_CIPHER *enc = NULL; |
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56 | char *dsaparams = NULL; |
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57 | char *outfile = NULL, *passoutarg = NULL, *passout = NULL, *prog; |
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58 | OPTION_CHOICE o; |
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59 | int ret = 1, private = 0; |
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60 | const BIGNUM *p = NULL; |
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61 | |
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62 | prog = opt_init(argc, argv, gendsa_options); |
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63 | while ((o = opt_next()) != OPT_EOF) { |
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64 | switch (o) { |
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65 | case OPT_EOF: |
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66 | case OPT_ERR: |
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67 | opthelp: |
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68 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); |
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69 | goto end; |
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70 | case OPT_HELP: |
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71 | ret = 0; |
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72 | opt_help(gendsa_options); |
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73 | goto end; |
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74 | case OPT_OUT: |
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75 | outfile = opt_arg(); |
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76 | break; |
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77 | case OPT_PASSOUT: |
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78 | passoutarg = opt_arg(); |
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79 | break; |
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80 | case OPT_ENGINE: |
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81 | e = setup_engine(opt_arg(), 0); |
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82 | break; |
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83 | case OPT_R_CASES: |
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84 | if (!opt_rand(o)) |
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85 | goto end; |
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86 | break; |
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87 | case OPT_CIPHER: |
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88 | if (!opt_cipher(opt_unknown(), &enc)) |
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89 | goto end; |
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90 | break; |
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91 | } |
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92 | } |
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93 | argc = opt_num_rest(); |
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94 | argv = opt_rest(); |
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95 | private = 1; |
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96 | |
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97 | if (argc != 1) |
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98 | goto opthelp; |
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99 | dsaparams = *argv; |
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100 | |
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101 | if (!app_passwd(NULL, passoutarg, NULL, &passout)) { |
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102 | BIO_printf(bio_err, "Error getting password\n"); |
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103 | goto end; |
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104 | } |
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105 | |
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106 | in = bio_open_default(dsaparams, 'r', FORMAT_PEM); |
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107 | if (in == NULL) |
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108 | goto end2; |
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109 | |
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110 | if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) { |
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111 | BIO_printf(bio_err, "unable to load DSA parameter file\n"); |
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112 | goto end; |
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113 | } |
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114 | BIO_free(in); |
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115 | in = NULL; |
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116 | |
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117 | out = bio_open_owner(outfile, FORMAT_PEM, private); |
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118 | if (out == NULL) |
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119 | goto end2; |
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120 | |
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121 | DSA_get0_pqg(dsa, &p, NULL, NULL); |
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122 | |
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123 | if (BN_num_bits(p) > OPENSSL_DSA_MAX_MODULUS_BITS) |
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124 | BIO_printf(bio_err, |
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125 | "Warning: It is not recommended to use more than %d bit for DSA keys.\n" |
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126 | " Your key size is %d! Larger key size may behave not as expected.\n", |
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127 | OPENSSL_DSA_MAX_MODULUS_BITS, BN_num_bits(p)); |
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128 | |
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129 | BIO_printf(bio_err, "Generating DSA key, %d bits\n", BN_num_bits(p)); |
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130 | if (!DSA_generate_key(dsa)) |
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131 | goto end; |
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132 | |
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133 | assert(private); |
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134 | if (!PEM_write_bio_DSAPrivateKey(out, dsa, enc, NULL, 0, NULL, passout)) |
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135 | goto end; |
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136 | ret = 0; |
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137 | end: |
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138 | if (ret != 0) |
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139 | ERR_print_errors(bio_err); |
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140 | end2: |
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141 | BIO_free(in); |
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142 | BIO_free_all(out); |
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143 | DSA_free(dsa); |
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144 | release_engine(e); |
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145 | OPENSSL_free(passout); |
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146 | return ret; |
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147 | } |
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148 | #endif |
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