1 /* $OpenBSD: rsa.c,v 1.2 2014/08/28 14:23:52 jsing Exp $ */ 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 61 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <time.h> 66 67 #include "apps.h" 68 69 #include <openssl/bio.h> 70 #include <openssl/bn.h> 71 #include <openssl/err.h> 72 #include <openssl/evp.h> 73 #include <openssl/pem.h> 74 #include <openssl/rsa.h> 75 #include <openssl/x509.h> 76 77 /* -inform arg - input format - default PEM (one of DER, NET or PEM) 78 * -outform arg - output format - default PEM 79 * -in arg - input file - default stdin 80 * -out arg - output file - default stdout 81 * -des - encrypt output if PEM format with DES in cbc mode 82 * -des3 - encrypt output if PEM format 83 * -idea - encrypt output if PEM format 84 * -seed - encrypt output if PEM format 85 * -aes128 - encrypt output if PEM format 86 * -aes192 - encrypt output if PEM format 87 * -aes256 - encrypt output if PEM format 88 * -camellia128 - encrypt output if PEM format 89 * -camellia192 - encrypt output if PEM format 90 * -camellia256 - encrypt output if PEM format 91 * -text - print a text version 92 * -modulus - print the RSA key modulus 93 * -check - verify key consistency 94 * -pubin - Expect a public key in input file. 95 * -pubout - Output a public key. 96 */ 97 98 int rsa_main(int, char **); 99 100 int 101 rsa_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 infile = NULL; 122 outfile = NULL; 123 informat = FORMAT_PEM; 124 outformat = FORMAT_PEM; 125 126 prog = argv[0]; 127 argc--; 128 argv++; 129 while (argc >= 1) { 130 if (strcmp(*argv, "-inform") == 0) { 131 if (--argc < 1) 132 goto bad; 133 informat = str2fmt(*(++argv)); 134 } else if (strcmp(*argv, "-outform") == 0) { 135 if (--argc < 1) 136 goto bad; 137 outformat = str2fmt(*(++argv)); 138 } else if (strcmp(*argv, "-in") == 0) { 139 if (--argc < 1) 140 goto bad; 141 infile = *(++argv); 142 } else if (strcmp(*argv, "-out") == 0) { 143 if (--argc < 1) 144 goto bad; 145 outfile = *(++argv); 146 } else if (strcmp(*argv, "-passin") == 0) { 147 if (--argc < 1) 148 goto bad; 149 passargin = *(++argv); 150 } else if (strcmp(*argv, "-passout") == 0) { 151 if (--argc < 1) 152 goto bad; 153 passargout = *(++argv); 154 } 155 #ifndef OPENSSL_NO_ENGINE 156 else if (strcmp(*argv, "-engine") == 0) { 157 if (--argc < 1) 158 goto bad; 159 engine = *(++argv); 160 } 161 #endif 162 else if (strcmp(*argv, "-sgckey") == 0) 163 sgckey = 1; 164 else if (strcmp(*argv, "-pubin") == 0) 165 pubin = 1; 166 else if (strcmp(*argv, "-pubout") == 0) 167 pubout = 1; 168 else if (strcmp(*argv, "-RSAPublicKey_in") == 0) 169 pubin = 2; 170 else if (strcmp(*argv, "-RSAPublicKey_out") == 0) 171 pubout = 2; 172 else if (strcmp(*argv, "-pvk-strong") == 0) 173 pvk_encr = 2; 174 else if (strcmp(*argv, "-pvk-weak") == 0) 175 pvk_encr = 1; 176 else if (strcmp(*argv, "-pvk-none") == 0) 177 pvk_encr = 0; 178 else if (strcmp(*argv, "-noout") == 0) 179 noout = 1; 180 else if (strcmp(*argv, "-text") == 0) 181 text = 1; 182 else if (strcmp(*argv, "-modulus") == 0) 183 modulus = 1; 184 else if (strcmp(*argv, "-check") == 0) 185 check = 1; 186 else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) { 187 BIO_printf(bio_err, "unknown option %s\n", *argv); 188 badops = 1; 189 break; 190 } 191 argc--; 192 argv++; 193 } 194 195 if (badops) { 196 bad: 197 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); 198 BIO_printf(bio_err, "where options are\n"); 199 BIO_printf(bio_err, " -inform arg input format - one of DER NET PEM\n"); 200 BIO_printf(bio_err, " -outform arg output format - one of DER NET PEM\n"); 201 BIO_printf(bio_err, " -in arg input file\n"); 202 BIO_printf(bio_err, " -sgckey Use IIS SGC key format\n"); 203 BIO_printf(bio_err, " -passin arg input file pass phrase source\n"); 204 BIO_printf(bio_err, " -out arg output file\n"); 205 BIO_printf(bio_err, " -passout arg output file pass phrase source\n"); 206 BIO_printf(bio_err, " -des encrypt PEM output with cbc des\n"); 207 BIO_printf(bio_err, " -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 208 #ifndef OPENSSL_NO_IDEA 209 BIO_printf(bio_err, " -idea encrypt PEM output with cbc idea\n"); 210 #endif 211 #ifndef OPENSSL_NO_AES 212 BIO_printf(bio_err, " -aes128, -aes192, -aes256\n"); 213 BIO_printf(bio_err, " encrypt PEM output with cbc aes\n"); 214 #endif 215 #ifndef OPENSSL_NO_CAMELLIA 216 BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n"); 217 BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n"); 218 #endif 219 BIO_printf(bio_err, " -text print the key in text\n"); 220 BIO_printf(bio_err, " -noout don't print key out\n"); 221 BIO_printf(bio_err, " -modulus print the RSA key modulus\n"); 222 BIO_printf(bio_err, " -check verify key consistency\n"); 223 BIO_printf(bio_err, " -pubin expect a public key in input file\n"); 224 BIO_printf(bio_err, " -pubout output a public key\n"); 225 #ifndef OPENSSL_NO_ENGINE 226 BIO_printf(bio_err, " -engine e use engine e, possibly a hardware device.\n"); 227 #endif 228 goto end; 229 } 230 231 #ifndef OPENSSL_NO_ENGINE 232 e = setup_engine(bio_err, engine, 0); 233 #endif 234 235 if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 236 BIO_printf(bio_err, "Error getting passwords\n"); 237 goto end; 238 } 239 if (check && pubin) { 240 BIO_printf(bio_err, "Only private keys can be checked\n"); 241 goto end; 242 } 243 out = BIO_new(BIO_s_file()); 244 245 { 246 EVP_PKEY *pkey; 247 248 if (pubin) { 249 int tmpformat = -1; 250 if (pubin == 2) { 251 if (informat == FORMAT_PEM) 252 tmpformat = FORMAT_PEMRSA; 253 else if (informat == FORMAT_ASN1) 254 tmpformat = FORMAT_ASN1RSA; 255 } else if (informat == FORMAT_NETSCAPE && sgckey) 256 tmpformat = FORMAT_IISSGC; 257 else 258 tmpformat = informat; 259 260 pkey = load_pubkey(bio_err, infile, tmpformat, 1, 261 passin, e, "Public Key"); 262 } else 263 pkey = load_key(bio_err, infile, 264 (informat == FORMAT_NETSCAPE && sgckey ? 265 FORMAT_IISSGC : informat), 1, 266 passin, e, "Private Key"); 267 268 if (pkey != NULL) 269 rsa = EVP_PKEY_get1_RSA(pkey); 270 EVP_PKEY_free(pkey); 271 } 272 273 if (rsa == NULL) { 274 ERR_print_errors(bio_err); 275 goto end; 276 } 277 if (outfile == NULL) { 278 BIO_set_fp(out, stdout, BIO_NOCLOSE); 279 } else { 280 if (BIO_write_filename(out, outfile) <= 0) { 281 perror(outfile); 282 goto end; 283 } 284 } 285 286 if (text) 287 if (!RSA_print(out, rsa, 0)) { 288 perror(outfile); 289 ERR_print_errors(bio_err); 290 goto end; 291 } 292 if (modulus) { 293 BIO_printf(out, "Modulus="); 294 BN_print(out, rsa->n); 295 BIO_printf(out, "\n"); 296 } 297 if (check) { 298 int r = RSA_check_key(rsa); 299 300 if (r == 1) 301 BIO_printf(out, "RSA key ok\n"); 302 else if (r == 0) { 303 unsigned long err; 304 305 while ((err = ERR_peek_error()) != 0 && 306 ERR_GET_LIB(err) == ERR_LIB_RSA && 307 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY && 308 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) { 309 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err)); 310 ERR_get_error(); /* remove e from error 311 * stack */ 312 } 313 } 314 if (r == -1 || ERR_peek_error() != 0) { /* should happen only if 315 * r == -1 */ 316 ERR_print_errors(bio_err); 317 goto end; 318 } 319 } 320 if (noout) { 321 ret = 0; 322 goto end; 323 } 324 BIO_printf(bio_err, "writing RSA key\n"); 325 if (outformat == FORMAT_ASN1) { 326 if (pubout || pubin) { 327 if (pubout == 2) 328 i = i2d_RSAPublicKey_bio(out, rsa); 329 else 330 i = i2d_RSA_PUBKEY_bio(out, rsa); 331 } else 332 i = i2d_RSAPrivateKey_bio(out, rsa); 333 } 334 #ifndef OPENSSL_NO_RC4 335 else if (outformat == FORMAT_NETSCAPE) { 336 unsigned char *p, *pp; 337 int size; 338 339 i = 1; 340 size = i2d_RSA_NET(rsa, NULL, NULL, sgckey); 341 if ((p = malloc(size)) == NULL) { 342 BIO_printf(bio_err, "Memory allocation failure\n"); 343 goto end; 344 } 345 pp = p; 346 i2d_RSA_NET(rsa, &p, NULL, sgckey); 347 BIO_write(out, (char *) pp, size); 348 free(pp); 349 } 350 #endif 351 else if (outformat == FORMAT_PEM) { 352 if (pubout || pubin) { 353 if (pubout == 2) 354 i = PEM_write_bio_RSAPublicKey(out, rsa); 355 else 356 i = PEM_write_bio_RSA_PUBKEY(out, rsa); 357 } else 358 i = PEM_write_bio_RSAPrivateKey(out, rsa, 359 enc, NULL, 0, NULL, passout); 360 #if !defined(OPENSSL_NO_DSA) && !defined(OPENSSL_NO_RC4) 361 } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) { 362 EVP_PKEY *pk; 363 pk = EVP_PKEY_new(); 364 EVP_PKEY_set1_RSA(pk, rsa); 365 if (outformat == FORMAT_PVK) 366 i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout); 367 else if (pubin || pubout) 368 i = i2b_PublicKey_bio(out, pk); 369 else 370 i = i2b_PrivateKey_bio(out, pk); 371 EVP_PKEY_free(pk); 372 #endif 373 } else { 374 BIO_printf(bio_err, "bad output format specified for outfile\n"); 375 goto end; 376 } 377 if (i <= 0) { 378 BIO_printf(bio_err, "unable to write key\n"); 379 ERR_print_errors(bio_err); 380 } else 381 ret = 0; 382 end: 383 if (out != NULL) 384 BIO_free_all(out); 385 if (rsa != NULL) 386 RSA_free(rsa); 387 free(passin); 388 free(passout); 389 390 return (ret); 391 } 392