ec.c revision 1.1.1.5
1 /* 2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <openssl/opensslconf.h> 11 #ifdef OPENSSL_NO_EC 12 NON_EMPTY_TRANSLATION_UNIT 13 #else 14 15 # include <stdio.h> 16 # include <stdlib.h> 17 # include <string.h> 18 # include "apps.h" 19 # include <openssl/bio.h> 20 # include <openssl/err.h> 21 # include <openssl/evp.h> 22 # include <openssl/pem.h> 23 24 static OPT_PAIR conv_forms[] = { 25 {"compressed", POINT_CONVERSION_COMPRESSED}, 26 {"uncompressed", POINT_CONVERSION_UNCOMPRESSED}, 27 {"hybrid", POINT_CONVERSION_HYBRID}, 28 {NULL} 29 }; 30 31 static OPT_PAIR param_enc[] = { 32 {"named_curve", OPENSSL_EC_NAMED_CURVE}, 33 {"explicit", 0}, 34 {NULL} 35 }; 36 37 typedef enum OPTION_choice { 38 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, 39 OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT, 40 OPT_NOOUT, OPT_TEXT, OPT_PARAM_OUT, OPT_PUBIN, OPT_PUBOUT, 41 OPT_PASSIN, OPT_PASSOUT, OPT_PARAM_ENC, OPT_CONV_FORM, OPT_CIPHER, 42 OPT_NO_PUBLIC, OPT_CHECK 43 } OPTION_CHOICE; 44 45 OPTIONS ec_options[] = { 46 {"help", OPT_HELP, '-', "Display this summary"}, 47 {"in", OPT_IN, 's', "Input file"}, 48 {"inform", OPT_INFORM, 'f', "Input format - DER or PEM"}, 49 {"out", OPT_OUT, '>', "Output file"}, 50 {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"}, 51 {"noout", OPT_NOOUT, '-', "Don't print key out"}, 52 {"text", OPT_TEXT, '-', "Print the key"}, 53 {"param_out", OPT_PARAM_OUT, '-', "Print the elliptic curve parameters"}, 54 {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"}, 55 {"pubout", OPT_PUBOUT, '-', "Output public key, not private"}, 56 {"no_public", OPT_NO_PUBLIC, '-', "exclude public key from private key"}, 57 {"check", OPT_CHECK, '-', "check key consistency"}, 58 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"}, 59 {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"}, 60 {"param_enc", OPT_PARAM_ENC, 's', 61 "Specifies the way the ec parameters are encoded"}, 62 {"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "}, 63 {"", OPT_CIPHER, '-', "Any supported cipher"}, 64 # ifndef OPENSSL_NO_ENGINE 65 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, 66 # endif 67 {NULL} 68 }; 69 70 int ec_main(int argc, char **argv) 71 { 72 BIO *in = NULL, *out = NULL; 73 ENGINE *e = NULL; 74 EC_KEY *eckey = NULL; 75 const EC_GROUP *group; 76 const EVP_CIPHER *enc = NULL; 77 point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED; 78 char *infile = NULL, *outfile = NULL, *prog; 79 char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL; 80 OPTION_CHOICE o; 81 int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_form = 0, new_asn1_flag = 0; 82 int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0; 83 int pubin = 0, pubout = 0, param_out = 0, i, ret = 1, private = 0; 84 int no_public = 0, check = 0; 85 86 prog = opt_init(argc, argv, ec_options); 87 while ((o = opt_next()) != OPT_EOF) { 88 switch (o) { 89 case OPT_EOF: 90 case OPT_ERR: 91 opthelp: 92 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 93 goto end; 94 case OPT_HELP: 95 opt_help(ec_options); 96 ret = 0; 97 goto end; 98 case OPT_INFORM: 99 if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat)) 100 goto opthelp; 101 break; 102 case OPT_IN: 103 infile = opt_arg(); 104 break; 105 case OPT_OUTFORM: 106 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat)) 107 goto opthelp; 108 break; 109 case OPT_OUT: 110 outfile = opt_arg(); 111 break; 112 case OPT_NOOUT: 113 noout = 1; 114 break; 115 case OPT_TEXT: 116 text = 1; 117 break; 118 case OPT_PARAM_OUT: 119 param_out = 1; 120 break; 121 case OPT_PUBIN: 122 pubin = 1; 123 break; 124 case OPT_PUBOUT: 125 pubout = 1; 126 break; 127 case OPT_PASSIN: 128 passinarg = opt_arg(); 129 break; 130 case OPT_PASSOUT: 131 passoutarg = opt_arg(); 132 break; 133 case OPT_ENGINE: 134 e = setup_engine(opt_arg(), 0); 135 break; 136 case OPT_CIPHER: 137 if (!opt_cipher(opt_unknown(), &enc)) 138 goto opthelp; 139 break; 140 case OPT_CONV_FORM: 141 if (!opt_pair(opt_arg(), conv_forms, &i)) 142 goto opthelp; 143 new_form = 1; 144 form = i; 145 break; 146 case OPT_PARAM_ENC: 147 if (!opt_pair(opt_arg(), param_enc, &i)) 148 goto opthelp; 149 new_asn1_flag = 1; 150 asn1_flag = i; 151 break; 152 case OPT_NO_PUBLIC: 153 no_public = 1; 154 break; 155 case OPT_CHECK: 156 check = 1; 157 break; 158 } 159 } 160 argc = opt_num_rest(); 161 if (argc != 0) 162 goto opthelp; 163 164 private = param_out || pubin || pubout ? 0 : 1; 165 if (text && !pubin) 166 private = 1; 167 168 if (!app_passwd(passinarg, passoutarg, &passin, &passout)) { 169 BIO_printf(bio_err, "Error getting passwords\n"); 170 goto end; 171 } 172 173 if (informat != FORMAT_ENGINE) { 174 in = bio_open_default(infile, 'r', informat); 175 if (in == NULL) 176 goto end; 177 } 178 179 BIO_printf(bio_err, "read EC key\n"); 180 if (informat == FORMAT_ASN1) { 181 if (pubin) 182 eckey = d2i_EC_PUBKEY_bio(in, NULL); 183 else 184 eckey = d2i_ECPrivateKey_bio(in, NULL); 185 } else if (informat == FORMAT_ENGINE) { 186 EVP_PKEY *pkey; 187 if (pubin) 188 pkey = load_pubkey(infile, informat , 1, passin, e, "Public Key"); 189 else 190 pkey = load_key(infile, informat, 1, passin, e, "Private Key"); 191 if (pkey != NULL) { 192 eckey = EVP_PKEY_get1_EC_KEY(pkey); 193 EVP_PKEY_free(pkey); 194 } 195 } else { 196 if (pubin) 197 eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL, NULL); 198 else 199 eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL, passin); 200 } 201 if (eckey == NULL) { 202 BIO_printf(bio_err, "unable to load Key\n"); 203 ERR_print_errors(bio_err); 204 goto end; 205 } 206 207 out = bio_open_owner(outfile, outformat, private); 208 if (out == NULL) 209 goto end; 210 211 group = EC_KEY_get0_group(eckey); 212 213 if (new_form) 214 EC_KEY_set_conv_form(eckey, form); 215 216 if (new_asn1_flag) 217 EC_KEY_set_asn1_flag(eckey, asn1_flag); 218 219 if (no_public) 220 EC_KEY_set_enc_flags(eckey, EC_PKEY_NO_PUBKEY); 221 222 if (text) { 223 assert(pubin || private); 224 if (!EC_KEY_print(out, eckey, 0)) { 225 perror(outfile); 226 ERR_print_errors(bio_err); 227 goto end; 228 } 229 } 230 231 if (check) { 232 if (EC_KEY_check_key(eckey) == 1) { 233 BIO_printf(bio_err, "EC Key valid.\n"); 234 } else { 235 BIO_printf(bio_err, "EC Key Invalid!\n"); 236 ERR_print_errors(bio_err); 237 } 238 } 239 240 if (noout) { 241 ret = 0; 242 goto end; 243 } 244 245 BIO_printf(bio_err, "writing EC key\n"); 246 if (outformat == FORMAT_ASN1) { 247 if (param_out) 248 i = i2d_ECPKParameters_bio(out, group); 249 else if (pubin || pubout) 250 i = i2d_EC_PUBKEY_bio(out, eckey); 251 else { 252 assert(private); 253 i = i2d_ECPrivateKey_bio(out, eckey); 254 } 255 } else { 256 if (param_out) 257 i = PEM_write_bio_ECPKParameters(out, group); 258 else if (pubin || pubout) 259 i = PEM_write_bio_EC_PUBKEY(out, eckey); 260 else { 261 assert(private); 262 i = PEM_write_bio_ECPrivateKey(out, eckey, enc, 263 NULL, 0, NULL, passout); 264 } 265 } 266 267 if (!i) { 268 BIO_printf(bio_err, "unable to write private key\n"); 269 ERR_print_errors(bio_err); 270 } else 271 ret = 0; 272 end: 273 BIO_free(in); 274 BIO_free_all(out); 275 EC_KEY_free(eckey); 276 release_engine(e); 277 OPENSSL_free(passin); 278 OPENSSL_free(passout); 279 return (ret); 280 } 281 #endif 282
Indexes created Sat Feb 28 05:31:39 UTC 2026