rsa.c revision 312826
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 char *engine = NULL; 115 int modulus = 0; 116 117 int pvk_encr = 2; 118 119 apps_startup(); 120 121 if (bio_err == NULL) 122 if ((bio_err = BIO_new(BIO_s_file())) != NULL) 123 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); 124 125 if (!load_config(bio_err, NULL)) 126 goto end; 127 128 infile = NULL; 129 outfile = NULL; 130 informat = FORMAT_PEM; 131 outformat = FORMAT_PEM; 132 133 prog = argv[0]; 134 argc--; 135 argv++; 136 while (argc >= 1) { 137 if (strcmp(*argv, "-inform") == 0) { 138 if (--argc < 1) 139 goto bad; 140 informat = str2fmt(*(++argv)); 141 } else if (strcmp(*argv, "-outform") == 0) { 142 if (--argc < 1) 143 goto bad; 144 outformat = str2fmt(*(++argv)); 145 } else if (strcmp(*argv, "-in") == 0) { 146 if (--argc < 1) 147 goto bad; 148 infile = *(++argv); 149 } else if (strcmp(*argv, "-out") == 0) { 150 if (--argc < 1) 151 goto bad; 152 outfile = *(++argv); 153 } else if (strcmp(*argv, "-passin") == 0) { 154 if (--argc < 1) 155 goto bad; 156 passargin = *(++argv); 157 } else if (strcmp(*argv, "-passout") == 0) { 158 if (--argc < 1) 159 goto bad; 160 passargout = *(++argv); 161 } 162# ifndef OPENSSL_NO_ENGINE 163 else if (strcmp(*argv, "-engine") == 0) { 164 if (--argc < 1) 165 goto bad; 166 engine = *(++argv); 167 } 168# endif 169 else if (strcmp(*argv, "-sgckey") == 0) 170 sgckey = 1; 171 else if (strcmp(*argv, "-pubin") == 0) 172 pubin = 1; 173 else if (strcmp(*argv, "-pubout") == 0) 174 pubout = 1; 175 else if (strcmp(*argv, "-RSAPublicKey_in") == 0) 176 pubin = 2; 177 else if (strcmp(*argv, "-RSAPublicKey_out") == 0) 178 pubout = 2; 179 else if (strcmp(*argv, "-pvk-strong") == 0) 180 pvk_encr = 2; 181 else if (strcmp(*argv, "-pvk-weak") == 0) 182 pvk_encr = 1; 183 else if (strcmp(*argv, "-pvk-none") == 0) 184 pvk_encr = 0; 185 else if (strcmp(*argv, "-noout") == 0) 186 noout = 1; 187 else if (strcmp(*argv, "-text") == 0) 188 text = 1; 189 else if (strcmp(*argv, "-modulus") == 0) 190 modulus = 1; 191 else if (strcmp(*argv, "-check") == 0) 192 check = 1; 193 else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) { 194 BIO_printf(bio_err, "unknown option %s\n", *argv); 195 badops = 1; 196 break; 197 } 198 argc--; 199 argv++; 200 } 201 202 if (badops) { 203 bad: 204 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); 205 BIO_printf(bio_err, "where options are\n"); 206 BIO_printf(bio_err, 207 " -inform arg input format - one of DER NET PEM\n"); 208 BIO_printf(bio_err, 209 " -outform arg output format - one of DER NET PEM\n"); 210 BIO_printf(bio_err, " -in arg input file\n"); 211 BIO_printf(bio_err, " -sgckey Use IIS SGC key format\n"); 212 BIO_printf(bio_err, 213 " -passin arg input file pass phrase source\n"); 214 BIO_printf(bio_err, " -out arg output file\n"); 215 BIO_printf(bio_err, 216 " -passout arg output file pass phrase source\n"); 217 BIO_printf(bio_err, 218 " -des encrypt PEM output with cbc des\n"); 219 BIO_printf(bio_err, 220 " -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 221# ifndef OPENSSL_NO_IDEA 222 BIO_printf(bio_err, 223 " -idea encrypt PEM output with cbc idea\n"); 224# endif 225# ifndef OPENSSL_NO_SEED 226 BIO_printf(bio_err, 227 " -seed encrypt PEM output with cbc seed\n"); 228# endif 229# ifndef OPENSSL_NO_AES 230 BIO_printf(bio_err, " -aes128, -aes192, -aes256\n"); 231 BIO_printf(bio_err, 232 " encrypt PEM output with cbc aes\n"); 233# endif 234# ifndef OPENSSL_NO_CAMELLIA 235 BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n"); 236 BIO_printf(bio_err, 237 " encrypt PEM output with cbc camellia\n"); 238# endif 239 BIO_printf(bio_err, " -text print the key in text\n"); 240 BIO_printf(bio_err, " -noout don't print key out\n"); 241 BIO_printf(bio_err, " -modulus print the RSA key modulus\n"); 242 BIO_printf(bio_err, " -check verify key consistency\n"); 243 BIO_printf(bio_err, 244 " -pubin expect a public key in input file\n"); 245 BIO_printf(bio_err, " -pubout output a public key\n"); 246# ifndef OPENSSL_NO_ENGINE 247 BIO_printf(bio_err, 248 " -engine e use engine e, possibly a hardware device.\n"); 249# endif 250 goto end; 251 } 252 253 ERR_load_crypto_strings(); 254 255 e = setup_engine(bio_err, engine, 0); 256 257 if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 258 BIO_printf(bio_err, "Error getting passwords\n"); 259 goto end; 260 } 261 262 if (check && pubin) { 263 BIO_printf(bio_err, "Only private keys can be checked\n"); 264 goto end; 265 } 266 267 out = BIO_new(BIO_s_file()); 268 269 { 270 EVP_PKEY *pkey; 271 272 if (pubin) { 273 int tmpformat = -1; 274 if (pubin == 2) { 275 if (informat == FORMAT_PEM) 276 tmpformat = FORMAT_PEMRSA; 277 else if (informat == FORMAT_ASN1) 278 tmpformat = FORMAT_ASN1RSA; 279 } else if (informat == FORMAT_NETSCAPE && sgckey) 280 tmpformat = FORMAT_IISSGC; 281 else 282 tmpformat = informat; 283 284 pkey = load_pubkey(bio_err, infile, tmpformat, 1, 285 passin, e, "Public Key"); 286 } else 287 pkey = load_key(bio_err, infile, 288 (informat == FORMAT_NETSCAPE && sgckey ? 289 FORMAT_IISSGC : informat), 1, 290 passin, e, "Private Key"); 291 292 if (pkey != NULL) 293 rsa = EVP_PKEY_get1_RSA(pkey); 294 EVP_PKEY_free(pkey); 295 } 296 297 if (rsa == NULL) { 298 ERR_print_errors(bio_err); 299 goto end; 300 } 301 302 if (outfile == NULL) { 303 BIO_set_fp(out, stdout, BIO_NOCLOSE); 304# ifdef OPENSSL_SYS_VMS 305 { 306 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 307 out = BIO_push(tmpbio, out); 308 } 309# endif 310 } else { 311 if (BIO_write_filename(out, outfile) <= 0) { 312 perror(outfile); 313 goto end; 314 } 315 } 316 317 if (text) 318 if (!RSA_print(out, rsa, 0)) { 319 perror(outfile); 320 ERR_print_errors(bio_err); 321 goto end; 322 } 323 324 if (modulus) { 325 BIO_printf(out, "Modulus="); 326 BN_print(out, rsa->n); 327 BIO_printf(out, "\n"); 328 } 329 330 if (check) { 331 int r = RSA_check_key(rsa); 332 333 if (r == 1) 334 BIO_printf(out, "RSA key ok\n"); 335 else if (r == 0) { 336 unsigned long err; 337 338 while ((err = ERR_peek_error()) != 0 && 339 ERR_GET_LIB(err) == ERR_LIB_RSA && 340 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY && 341 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) { 342 BIO_printf(out, "RSA key error: %s\n", 343 ERR_reason_error_string(err)); 344 ERR_get_error(); /* remove e from error stack */ 345 } 346 } 347 348 if (r == -1 || ERR_peek_error() != 0) { /* should happen only if r == 349 * -1 */ 350 ERR_print_errors(bio_err); 351 goto end; 352 } 353 } 354 355 if (noout) { 356 ret = 0; 357 goto end; 358 } 359 BIO_printf(bio_err, "writing RSA key\n"); 360 if (outformat == FORMAT_ASN1) { 361 if (pubout || pubin) { 362 if (pubout == 2) 363 i = i2d_RSAPublicKey_bio(out, rsa); 364 else 365 i = i2d_RSA_PUBKEY_bio(out, rsa); 366 } else 367 i = i2d_RSAPrivateKey_bio(out, rsa); 368 } 369# ifndef OPENSSL_NO_RC4 370 else if (outformat == FORMAT_NETSCAPE) { 371 unsigned char *p, *pp; 372 int size; 373 374 i = 1; 375 size = i2d_RSA_NET(rsa, NULL, NULL, sgckey); 376 if ((p = (unsigned char *)OPENSSL_malloc(size)) == NULL) { 377 BIO_printf(bio_err, "Memory allocation failure\n"); 378 goto end; 379 } 380 pp = p; 381 i2d_RSA_NET(rsa, &p, NULL, sgckey); 382 BIO_write(out, (char *)pp, size); 383 OPENSSL_free(pp); 384 } 385# endif 386 else if (outformat == FORMAT_PEM) { 387 if (pubout || pubin) { 388 if (pubout == 2) 389 i = PEM_write_bio_RSAPublicKey(out, rsa); 390 else 391 i = PEM_write_bio_RSA_PUBKEY(out, rsa); 392 } else 393 i = PEM_write_bio_RSAPrivateKey(out, rsa, 394 enc, NULL, 0, NULL, passout); 395# if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4) 396 } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) { 397 EVP_PKEY *pk; 398 pk = EVP_PKEY_new(); 399 EVP_PKEY_set1_RSA(pk, rsa); 400 if (outformat == FORMAT_PVK) 401 i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout); 402 else if (pubin || pubout) 403 i = i2b_PublicKey_bio(out, pk); 404 else 405 i = i2b_PrivateKey_bio(out, pk); 406 EVP_PKEY_free(pk); 407# endif 408 } else { 409 BIO_printf(bio_err, "bad output format specified for outfile\n"); 410 goto end; 411 } 412 if (i <= 0) { 413 BIO_printf(bio_err, "unable to write key\n"); 414 ERR_print_errors(bio_err); 415 } else 416 ret = 0; 417 end: 418 release_engine(e); 419 if (out != NULL) 420 BIO_free_all(out); 421 if (rsa != NULL) 422 RSA_free(rsa); 423 if (passin) 424 OPENSSL_free(passin); 425 if (passout) 426 OPENSSL_free(passout); 427 apps_shutdown(); 428 OPENSSL_EXIT(ret); 429} 430#else /* !OPENSSL_NO_RSA */ 431 432# if PEDANTIC 433static void *dummy = &dummy; 434# endif 435 436#endif 437