1 | /*
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2 | * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
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3 | *
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4 | * Licensed under the OpenSSL license (the "License"). You may not use
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5 | * this file except in compliance with the License. You can obtain a copy
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6 | * in the file LICENSE in the source distribution or at
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7 | * https://www.openssl.org/source/license.html
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8 | */
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9 |
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10 | #include <openssl/opensslconf.h>
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11 | #ifdef OPENSSL_NO_EC
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12 | NON_EMPTY_TRANSLATION_UNIT
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13 | #else
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14 |
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15 | # include <stdio.h>
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16 | # include <stdlib.h>
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17 | # include <string.h>
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18 | # include "apps.h"
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19 | # include <openssl/bio.h>
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20 | # include <openssl/err.h>
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21 | # include <openssl/evp.h>
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22 | # include <openssl/pem.h>
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23 |
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24 | static OPT_PAIR conv_forms[] = {
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25 | {"compressed", POINT_CONVERSION_COMPRESSED},
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26 | {"uncompressed", POINT_CONVERSION_UNCOMPRESSED},
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27 | {"hybrid", POINT_CONVERSION_HYBRID},
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28 | {NULL}
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29 | };
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30 |
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31 | static OPT_PAIR param_enc[] = {
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32 | {"named_curve", OPENSSL_EC_NAMED_CURVE},
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33 | {"explicit", 0},
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34 | {NULL}
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35 | };
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36 |
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37 | typedef enum OPTION_choice {
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38 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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39 | OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT,
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40 | OPT_NOOUT, OPT_TEXT, OPT_PARAM_OUT, OPT_PUBIN, OPT_PUBOUT,
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41 | OPT_PASSIN, OPT_PASSOUT, OPT_PARAM_ENC, OPT_CONV_FORM, OPT_CIPHER,
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42 | OPT_NO_PUBLIC, OPT_CHECK
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43 | } OPTION_CHOICE;
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44 |
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45 | OPTIONS ec_options[] = {
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46 | {"help", OPT_HELP, '-', "Display this summary"},
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47 | {"in", OPT_IN, 's', "Input file"},
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48 | {"inform", OPT_INFORM, 'f', "Input format - DER or PEM"},
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49 | {"out", OPT_OUT, '>', "Output file"},
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50 | {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
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51 | {"noout", OPT_NOOUT, '-', "Don't print key out"},
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52 | {"text", OPT_TEXT, '-', "Print the key"},
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53 | {"param_out", OPT_PARAM_OUT, '-', "Print the elliptic curve parameters"},
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54 | {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
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55 | {"pubout", OPT_PUBOUT, '-', "Output public key, not private"},
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56 | {"no_public", OPT_NO_PUBLIC, '-', "exclude public key from private key"},
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57 | {"check", OPT_CHECK, '-', "check key consistency"},
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58 | {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
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59 | {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
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60 | {"param_enc", OPT_PARAM_ENC, 's',
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61 | "Specifies the way the ec parameters are encoded"},
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62 | {"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
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63 | {"", OPT_CIPHER, '-', "Any supported cipher"},
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64 | # ifndef OPENSSL_NO_ENGINE
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65 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
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66 | # endif
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67 | {NULL}
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68 | };
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69 |
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70 | int ec_main(int argc, char **argv)
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71 | {
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72 | BIO *in = NULL, *out = NULL;
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73 | ENGINE *e = NULL;
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74 | EC_KEY *eckey = NULL;
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75 | const EC_GROUP *group;
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76 | const EVP_CIPHER *enc = NULL;
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77 | point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
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78 | char *infile = NULL, *outfile = NULL, *prog;
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79 | char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
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80 | OPTION_CHOICE o;
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81 | int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_form = 0, new_asn1_flag = 0;
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82 | int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0;
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83 | int pubin = 0, pubout = 0, param_out = 0, i, ret = 1, private = 0;
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84 | int no_public = 0, check = 0;
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85 |
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86 | prog = opt_init(argc, argv, ec_options);
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87 | while ((o = opt_next()) != OPT_EOF) {
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88 | switch (o) {
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89 | case OPT_EOF:
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90 | case OPT_ERR:
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91 | opthelp:
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92 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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93 | goto end;
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94 | case OPT_HELP:
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95 | opt_help(ec_options);
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96 | ret = 0;
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97 | goto end;
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98 | case OPT_INFORM:
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99 | if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
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100 | goto opthelp;
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101 | break;
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102 | case OPT_IN:
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103 | infile = opt_arg();
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104 | break;
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105 | case OPT_OUTFORM:
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106 | if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
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107 | goto opthelp;
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108 | break;
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109 | case OPT_OUT:
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110 | outfile = opt_arg();
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111 | break;
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112 | case OPT_NOOUT:
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113 | noout = 1;
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114 | break;
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115 | case OPT_TEXT:
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116 | text = 1;
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117 | break;
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118 | case OPT_PARAM_OUT:
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119 | param_out = 1;
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120 | break;
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121 | case OPT_PUBIN:
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122 | pubin = 1;
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123 | break;
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124 | case OPT_PUBOUT:
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125 | pubout = 1;
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126 | break;
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127 | case OPT_PASSIN:
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128 | passinarg = opt_arg();
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129 | break;
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130 | case OPT_PASSOUT:
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131 | passoutarg = opt_arg();
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132 | break;
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133 | case OPT_ENGINE:
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134 | e = setup_engine(opt_arg(), 0);
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135 | break;
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136 | case OPT_CIPHER:
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137 | if (!opt_cipher(opt_unknown(), &enc))
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138 | goto opthelp;
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139 | break;
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140 | case OPT_CONV_FORM:
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141 | if (!opt_pair(opt_arg(), conv_forms, &i))
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142 | goto opthelp;
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143 | new_form = 1;
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144 | form = i;
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145 | break;
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146 | case OPT_PARAM_ENC:
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147 | if (!opt_pair(opt_arg(), param_enc, &i))
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148 | goto opthelp;
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149 | new_asn1_flag = 1;
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150 | asn1_flag = i;
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151 | break;
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152 | case OPT_NO_PUBLIC:
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153 | no_public = 1;
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154 | break;
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155 | case OPT_CHECK:
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156 | check = 1;
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157 | break;
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158 | }
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159 | }
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160 | argc = opt_num_rest();
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161 | if (argc != 0)
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162 | goto opthelp;
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163 |
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164 | private = param_out || pubin || pubout ? 0 : 1;
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165 | if (text && !pubin)
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166 | private = 1;
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167 |
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168 | if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
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169 | BIO_printf(bio_err, "Error getting passwords\n");
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170 | goto end;
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171 | }
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172 |
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173 | if (informat != FORMAT_ENGINE) {
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174 | in = bio_open_default(infile, 'r', informat);
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175 | if (in == NULL)
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176 | goto end;
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177 | }
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178 |
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179 | BIO_printf(bio_err, "read EC key\n");
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180 | if (informat == FORMAT_ASN1) {
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181 | if (pubin)
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182 | eckey = d2i_EC_PUBKEY_bio(in, NULL);
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183 | else
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184 | eckey = d2i_ECPrivateKey_bio(in, NULL);
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185 | } else if (informat == FORMAT_ENGINE) {
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186 | EVP_PKEY *pkey;
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187 | if (pubin)
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188 | pkey = load_pubkey(infile, informat , 1, passin, e, "Public Key");
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189 | else
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190 | pkey = load_key(infile, informat, 1, passin, e, "Private Key");
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191 | if (pkey != NULL) {
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192 | eckey = EVP_PKEY_get1_EC_KEY(pkey);
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193 | EVP_PKEY_free(pkey);
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194 | }
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195 | } else {
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196 | if (pubin)
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197 | eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL, NULL);
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198 | else
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199 | eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL, passin);
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200 | }
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201 | if (eckey == NULL) {
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202 | BIO_printf(bio_err, "unable to load Key\n");
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203 | ERR_print_errors(bio_err);
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204 | goto end;
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205 | }
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206 |
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207 | out = bio_open_owner(outfile, outformat, private);
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208 | if (out == NULL)
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209 | goto end;
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210 |
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211 | group = EC_KEY_get0_group(eckey);
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212 |
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213 | if (new_form)
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214 | EC_KEY_set_conv_form(eckey, form);
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215 |
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216 | if (new_asn1_flag)
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217 | EC_KEY_set_asn1_flag(eckey, asn1_flag);
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218 |
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219 | if (no_public)
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220 | EC_KEY_set_enc_flags(eckey, EC_PKEY_NO_PUBKEY);
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221 |
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222 | if (text) {
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223 | assert(pubin || private);
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224 | if (!EC_KEY_print(out, eckey, 0)) {
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225 | perror(outfile);
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226 | ERR_print_errors(bio_err);
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227 | goto end;
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228 | }
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229 | }
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230 |
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231 | if (check) {
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232 | if (EC_KEY_check_key(eckey) == 1) {
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233 | BIO_printf(bio_err, "EC Key valid.\n");
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234 | } else {
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235 | BIO_printf(bio_err, "EC Key Invalid!\n");
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236 | ERR_print_errors(bio_err);
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237 | }
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238 | }
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239 |
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240 | if (noout) {
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241 | ret = 0;
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242 | goto end;
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243 | }
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244 |
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245 | BIO_printf(bio_err, "writing EC key\n");
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246 | if (outformat == FORMAT_ASN1) {
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247 | if (param_out)
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248 | i = i2d_ECPKParameters_bio(out, group);
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249 | else if (pubin || pubout)
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250 | i = i2d_EC_PUBKEY_bio(out, eckey);
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251 | else {
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252 | assert(private);
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253 | i = i2d_ECPrivateKey_bio(out, eckey);
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254 | }
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255 | } else {
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256 | if (param_out)
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257 | i = PEM_write_bio_ECPKParameters(out, group);
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258 | else if (pubin || pubout)
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259 | i = PEM_write_bio_EC_PUBKEY(out, eckey);
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260 | else {
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261 | assert(private);
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262 | i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
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263 | NULL, 0, NULL, passout);
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264 | }
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265 | }
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266 |
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267 | if (!i) {
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268 | BIO_printf(bio_err, "unable to write private key\n");
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269 | ERR_print_errors(bio_err);
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270 | } else
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271 | ret = 0;
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272 | end:
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273 | BIO_free(in);
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274 | BIO_free_all(out);
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275 | EC_KEY_free(eckey);
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276 | release_engine(e);
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277 | OPENSSL_free(passin);
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278 | OPENSSL_free(passout);
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279 | return (ret);
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280 | }
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281 | #endif
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