rsa.c revision 296341
1/* apps/rsa.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#include <openssl/opensslconf.h> 60#ifndef OPENSSL_NO_RSA 61# include <stdio.h> 62# include <stdlib.h> 63# include <string.h> 64# include <time.h> 65# include "apps.h" 66# include <openssl/bio.h> 67# include <openssl/err.h> 68# include <openssl/rsa.h> 69# include <openssl/evp.h> 70# include <openssl/x509.h> 71# include <openssl/pem.h> 72# include <openssl/bn.h> 73 74# undef PROG 75# define PROG rsa_main 76 77/*- 78 * -inform arg - input format - default PEM (one of DER, NET or PEM) 79 * -outform arg - output format - default PEM 80 * -in arg - input file - default stdin 81 * -out arg - output file - default stdout 82 * -des - encrypt output if PEM format with DES in cbc mode 83 * -des3 - encrypt output if PEM format 84 * -idea - encrypt output if PEM format 85 * -seed - encrypt output if PEM format 86 * -aes128 - encrypt output if PEM format 87 * -aes192 - encrypt output if PEM format 88 * -aes256 - encrypt output if PEM format 89 * -camellia128 - encrypt output if PEM format 90 * -camellia192 - encrypt output if PEM format 91 * -camellia256 - encrypt output if PEM format 92 * -text - print a text version 93 * -modulus - print the RSA key modulus 94 * -check - verify key consistency 95 * -pubin - Expect a public key in input file. 96 * -pubout - Output a public key. 97 */ 98 99int MAIN(int, char **); 100 101int MAIN(int argc, char **argv) 102{ 103 ENGINE *e = NULL; 104 int ret = 1; 105 RSA *rsa = NULL; 106 int i, badops = 0, sgckey = 0; 107 const EVP_CIPHER *enc = NULL; 108 BIO *out = NULL; 109 int informat, outformat, text = 0, check = 0, noout = 0; 110 int pubin = 0, pubout = 0; 111 char *infile, *outfile, *prog; 112 char *passargin = NULL, *passargout = NULL; 113 char *passin = NULL, *passout = NULL; 114# ifndef OPENSSL_NO_ENGINE 115 char *engine = NULL; 116# endif 117 int modulus = 0; 118 119 int pvk_encr = 2; 120 121 apps_startup(); 122 123 if (bio_err == NULL) 124 if ((bio_err = BIO_new(BIO_s_file())) != NULL) 125 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); 126 127 if (!load_config(bio_err, NULL)) 128 goto end; 129 130 infile = NULL; 131 outfile = NULL; 132 informat = FORMAT_PEM; 133 outformat = FORMAT_PEM; 134 135 prog = argv[0]; 136 argc--; 137 argv++; 138 while (argc >= 1) { 139 if (strcmp(*argv, "-inform") == 0) { 140 if (--argc < 1) 141 goto bad; 142 informat = str2fmt(*(++argv)); 143 } else if (strcmp(*argv, "-outform") == 0) { 144 if (--argc < 1) 145 goto bad; 146 outformat = str2fmt(*(++argv)); 147 } else if (strcmp(*argv, "-in") == 0) { 148 if (--argc < 1) 149 goto bad; 150 infile = *(++argv); 151 } else if (strcmp(*argv, "-out") == 0) { 152 if (--argc < 1) 153 goto bad; 154 outfile = *(++argv); 155 } else if (strcmp(*argv, "-passin") == 0) { 156 if (--argc < 1) 157 goto bad; 158 passargin = *(++argv); 159 } else if (strcmp(*argv, "-passout") == 0) { 160 if (--argc < 1) 161 goto bad; 162 passargout = *(++argv); 163 } 164# ifndef OPENSSL_NO_ENGINE 165 else if (strcmp(*argv, "-engine") == 0) { 166 if (--argc < 1) 167 goto bad; 168 engine = *(++argv); 169 } 170# endif 171 else if (strcmp(*argv, "-sgckey") == 0) 172 sgckey = 1; 173 else if (strcmp(*argv, "-pubin") == 0) 174 pubin = 1; 175 else if (strcmp(*argv, "-pubout") == 0) 176 pubout = 1; 177 else if (strcmp(*argv, "-RSAPublicKey_in") == 0) 178 pubin = 2; 179 else if (strcmp(*argv, "-RSAPublicKey_out") == 0) 180 pubout = 2; 181 else if (strcmp(*argv, "-pvk-strong") == 0) 182 pvk_encr = 2; 183 else if (strcmp(*argv, "-pvk-weak") == 0) 184 pvk_encr = 1; 185 else if (strcmp(*argv, "-pvk-none") == 0) 186 pvk_encr = 0; 187 else if (strcmp(*argv, "-noout") == 0) 188 noout = 1; 189 else if (strcmp(*argv, "-text") == 0) 190 text = 1; 191 else if (strcmp(*argv, "-modulus") == 0) 192 modulus = 1; 193 else if (strcmp(*argv, "-check") == 0) 194 check = 1; 195 else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) { 196 BIO_printf(bio_err, "unknown option %s\n", *argv); 197 badops = 1; 198 break; 199 } 200 argc--; 201 argv++; 202 } 203 204 if (badops) { 205 bad: 206 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); 207 BIO_printf(bio_err, "where options are\n"); 208 BIO_printf(bio_err, 209 " -inform arg input format - one of DER NET PEM\n"); 210 BIO_printf(bio_err, 211 " -outform arg output format - one of DER NET PEM\n"); 212 BIO_printf(bio_err, " -in arg input file\n"); 213 BIO_printf(bio_err, " -sgckey Use IIS SGC key format\n"); 214 BIO_printf(bio_err, 215 " -passin arg input file pass phrase source\n"); 216 BIO_printf(bio_err, " -out arg output file\n"); 217 BIO_printf(bio_err, 218 " -passout arg output file pass phrase source\n"); 219 BIO_printf(bio_err, 220 " -des encrypt PEM output with cbc des\n"); 221 BIO_printf(bio_err, 222 " -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 223# ifndef OPENSSL_NO_IDEA 224 BIO_printf(bio_err, 225 " -idea encrypt PEM output with cbc idea\n"); 226# endif 227# ifndef OPENSSL_NO_SEED 228 BIO_printf(bio_err, 229 " -seed encrypt PEM output with cbc seed\n"); 230# endif 231# ifndef OPENSSL_NO_AES 232 BIO_printf(bio_err, " -aes128, -aes192, -aes256\n"); 233 BIO_printf(bio_err, 234 " encrypt PEM output with cbc aes\n"); 235# endif 236# ifndef OPENSSL_NO_CAMELLIA 237 BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n"); 238 BIO_printf(bio_err, 239 " encrypt PEM output with cbc camellia\n"); 240# endif 241 BIO_printf(bio_err, " -text print the key in text\n"); 242 BIO_printf(bio_err, " -noout don't print key out\n"); 243 BIO_printf(bio_err, " -modulus print the RSA key modulus\n"); 244 BIO_printf(bio_err, " -check verify key consistency\n"); 245 BIO_printf(bio_err, 246 " -pubin expect a public key in input file\n"); 247 BIO_printf(bio_err, " -pubout output a public key\n"); 248# ifndef OPENSSL_NO_ENGINE 249 BIO_printf(bio_err, 250 " -engine e use engine e, possibly a hardware device.\n"); 251# endif 252 goto end; 253 } 254 255 ERR_load_crypto_strings(); 256 257# ifndef OPENSSL_NO_ENGINE 258 e = setup_engine(bio_err, engine, 0); 259# endif 260 261 if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 262 BIO_printf(bio_err, "Error getting passwords\n"); 263 goto end; 264 } 265 266 if (check && pubin) { 267 BIO_printf(bio_err, "Only private keys can be checked\n"); 268 goto end; 269 } 270 271 out = BIO_new(BIO_s_file()); 272 273 { 274 EVP_PKEY *pkey; 275 276 if (pubin) { 277 int tmpformat = -1; 278 if (pubin == 2) { 279 if (informat == FORMAT_PEM) 280 tmpformat = FORMAT_PEMRSA; 281 else if (informat == FORMAT_ASN1) 282 tmpformat = FORMAT_ASN1RSA; 283 } else if (informat == FORMAT_NETSCAPE && sgckey) 284 tmpformat = FORMAT_IISSGC; 285 else 286 tmpformat = informat; 287 288 pkey = load_pubkey(bio_err, infile, tmpformat, 1, 289 passin, e, "Public Key"); 290 } else 291 pkey = load_key(bio_err, infile, 292 (informat == FORMAT_NETSCAPE && sgckey ? 293 FORMAT_IISSGC : informat), 1, 294 passin, e, "Private Key"); 295 296 if (pkey != NULL) 297 rsa = EVP_PKEY_get1_RSA(pkey); 298 EVP_PKEY_free(pkey); 299 } 300 301 if (rsa == NULL) { 302 ERR_print_errors(bio_err); 303 goto end; 304 } 305 306 if (outfile == NULL) { 307 BIO_set_fp(out, stdout, BIO_NOCLOSE); 308# ifdef OPENSSL_SYS_VMS 309 { 310 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 311 out = BIO_push(tmpbio, out); 312 } 313# endif 314 } else { 315 if (BIO_write_filename(out, outfile) <= 0) { 316 perror(outfile); 317 goto end; 318 } 319 } 320 321 if (text) 322 if (!RSA_print(out, rsa, 0)) { 323 perror(outfile); 324 ERR_print_errors(bio_err); 325 goto end; 326 } 327 328 if (modulus) { 329 BIO_printf(out, "Modulus="); 330 BN_print(out, rsa->n); 331 BIO_printf(out, "\n"); 332 } 333 334 if (check) { 335 int r = RSA_check_key(rsa); 336 337 if (r == 1) 338 BIO_printf(out, "RSA key ok\n"); 339 else if (r == 0) { 340 unsigned long err; 341 342 while ((err = ERR_peek_error()) != 0 && 343 ERR_GET_LIB(err) == ERR_LIB_RSA && 344 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY && 345 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) { 346 BIO_printf(out, "RSA key error: %s\n", 347 ERR_reason_error_string(err)); 348 ERR_get_error(); /* remove e from error stack */ 349 } 350 } 351 352 if (r == -1 || ERR_peek_error() != 0) { /* should happen only if r == 353 * -1 */ 354 ERR_print_errors(bio_err); 355 goto end; 356 } 357 } 358 359 if (noout) { 360 ret = 0; 361 goto end; 362 } 363 BIO_printf(bio_err, "writing RSA key\n"); 364 if (outformat == FORMAT_ASN1) { 365 if (pubout || pubin) { 366 if (pubout == 2) 367 i = i2d_RSAPublicKey_bio(out, rsa); 368 else 369 i = i2d_RSA_PUBKEY_bio(out, rsa); 370 } else 371 i = i2d_RSAPrivateKey_bio(out, rsa); 372 } 373# ifndef OPENSSL_NO_RC4 374 else if (outformat == FORMAT_NETSCAPE) { 375 unsigned char *p, *pp; 376 int size; 377 378 i = 1; 379 size = i2d_RSA_NET(rsa, NULL, NULL, sgckey); 380 if ((p = (unsigned char *)OPENSSL_malloc(size)) == NULL) { 381 BIO_printf(bio_err, "Memory allocation failure\n"); 382 goto end; 383 } 384 pp = p; 385 i2d_RSA_NET(rsa, &p, NULL, sgckey); 386 BIO_write(out, (char *)pp, size); 387 OPENSSL_free(pp); 388 } 389# endif 390 else if (outformat == FORMAT_PEM) { 391 if (pubout || pubin) { 392 if (pubout == 2) 393 i = PEM_write_bio_RSAPublicKey(out, rsa); 394 else 395 i = PEM_write_bio_RSA_PUBKEY(out, rsa); 396 } else 397 i = PEM_write_bio_RSAPrivateKey(out, rsa, 398 enc, NULL, 0, NULL, passout); 399# if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4) 400 } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) { 401 EVP_PKEY *pk; 402 pk = EVP_PKEY_new(); 403 EVP_PKEY_set1_RSA(pk, rsa); 404 if (outformat == FORMAT_PVK) 405 i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout); 406 else if (pubin || pubout) 407 i = i2b_PublicKey_bio(out, pk); 408 else 409 i = i2b_PrivateKey_bio(out, pk); 410 EVP_PKEY_free(pk); 411# endif 412 } else { 413 BIO_printf(bio_err, "bad output format specified for outfile\n"); 414 goto end; 415 } 416 if (i <= 0) { 417 BIO_printf(bio_err, "unable to write key\n"); 418 ERR_print_errors(bio_err); 419 } else 420 ret = 0; 421 end: 422 if (out != NULL) 423 BIO_free_all(out); 424 if (rsa != NULL) 425 RSA_free(rsa); 426 if (passin) 427 OPENSSL_free(passin); 428 if (passout) 429 OPENSSL_free(passout); 430 apps_shutdown(); 431 OPENSSL_EXIT(ret); 432} 433#else /* !OPENSSL_NO_RSA */ 434 435# if PEDANTIC 436static void *dummy = &dummy; 437# endif 438 439#endif 440