rsa.c revision 160814
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/* -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 * -aes128 - encrypt output if PEM format 85 * -aes192 - encrypt output if PEM format 86 * -aes256 - encrypt output if PEM format 87 * -text - print a text version 88 * -modulus - print the RSA key modulus 89 * -check - verify key consistency 90 * -pubin - Expect a public key in input file. 91 * -pubout - Output a public key. 92 */ 93 94int MAIN(int, char **); 95 96int MAIN(int argc, char **argv) 97 { 98 ENGINE *e = NULL; 99 int ret=1; 100 RSA *rsa=NULL; 101 int i,badops=0, sgckey=0; 102 const EVP_CIPHER *enc=NULL; 103 BIO *out=NULL; 104 int informat,outformat,text=0,check=0,noout=0; 105 int pubin = 0, pubout = 0; 106 char *infile,*outfile,*prog; 107 char *passargin = NULL, *passargout = NULL; 108 char *passin = NULL, *passout = NULL; 109#ifndef OPENSSL_NO_ENGINE 110 char *engine=NULL; 111#endif 112 int modulus=0; 113 114 apps_startup(); 115 116 if (bio_err == NULL) 117 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 118 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 119 120 if (!load_config(bio_err, NULL)) 121 goto end; 122 123 infile=NULL; 124 outfile=NULL; 125 informat=FORMAT_PEM; 126 outformat=FORMAT_PEM; 127 128 prog=argv[0]; 129 argc--; 130 argv++; 131 while (argc >= 1) 132 { 133 if (strcmp(*argv,"-inform") == 0) 134 { 135 if (--argc < 1) goto bad; 136 informat=str2fmt(*(++argv)); 137 } 138 else if (strcmp(*argv,"-outform") == 0) 139 { 140 if (--argc < 1) goto bad; 141 outformat=str2fmt(*(++argv)); 142 } 143 else if (strcmp(*argv,"-in") == 0) 144 { 145 if (--argc < 1) goto bad; 146 infile= *(++argv); 147 } 148 else if (strcmp(*argv,"-out") == 0) 149 { 150 if (--argc < 1) goto bad; 151 outfile= *(++argv); 152 } 153 else if (strcmp(*argv,"-passin") == 0) 154 { 155 if (--argc < 1) goto bad; 156 passargin= *(++argv); 157 } 158 else if (strcmp(*argv,"-passout") == 0) 159 { 160 if (--argc < 1) goto bad; 161 passargout= *(++argv); 162 } 163#ifndef OPENSSL_NO_ENGINE 164 else if (strcmp(*argv,"-engine") == 0) 165 { 166 if (--argc < 1) goto bad; 167 engine= *(++argv); 168 } 169#endif 170 else if (strcmp(*argv,"-sgckey") == 0) 171 sgckey=1; 172 else if (strcmp(*argv,"-pubin") == 0) 173 pubin=1; 174 else if (strcmp(*argv,"-pubout") == 0) 175 pubout=1; 176 else if (strcmp(*argv,"-noout") == 0) 177 noout=1; 178 else if (strcmp(*argv,"-text") == 0) 179 text=1; 180 else if (strcmp(*argv,"-modulus") == 0) 181 modulus=1; 182 else if (strcmp(*argv,"-check") == 0) 183 check=1; 184 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL) 185 { 186 BIO_printf(bio_err,"unknown option %s\n",*argv); 187 badops=1; 188 break; 189 } 190 argc--; 191 argv++; 192 } 193 194 if (badops) 195 { 196bad: 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 BIO_printf(bio_err," -text print the key in text\n"); 216 BIO_printf(bio_err," -noout don't print key out\n"); 217 BIO_printf(bio_err," -modulus print the RSA key modulus\n"); 218 BIO_printf(bio_err," -check verify key consistency\n"); 219 BIO_printf(bio_err," -pubin expect a public key in input file\n"); 220 BIO_printf(bio_err," -pubout output a public key\n"); 221#ifndef OPENSSL_NO_ENGINE 222 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); 223#endif 224 goto end; 225 } 226 227 ERR_load_crypto_strings(); 228 229#ifndef OPENSSL_NO_ENGINE 230 e = setup_engine(bio_err, engine, 0); 231#endif 232 233 if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 234 BIO_printf(bio_err, "Error getting passwords\n"); 235 goto end; 236 } 237 238 if(check && pubin) { 239 BIO_printf(bio_err, "Only private keys can be checked\n"); 240 goto end; 241 } 242 243 out=BIO_new(BIO_s_file()); 244 245 { 246 EVP_PKEY *pkey; 247 248 if (pubin) 249 pkey = load_pubkey(bio_err, infile, 250 (informat == FORMAT_NETSCAPE && sgckey ? 251 FORMAT_IISSGC : informat), 1, 252 passin, e, "Public Key"); 253 else 254 pkey = load_key(bio_err, infile, 255 (informat == FORMAT_NETSCAPE && sgckey ? 256 FORMAT_IISSGC : informat), 1, 257 passin, e, "Private Key"); 258 259 if (pkey != NULL) 260 rsa = pkey == NULL ? NULL : EVP_PKEY_get1_RSA(pkey); 261 EVP_PKEY_free(pkey); 262 } 263 264 if (rsa == NULL) 265 { 266 ERR_print_errors(bio_err); 267 goto end; 268 } 269 270 if (outfile == NULL) 271 { 272 BIO_set_fp(out,stdout,BIO_NOCLOSE); 273#ifdef OPENSSL_SYS_VMS 274 { 275 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 276 out = BIO_push(tmpbio, out); 277 } 278#endif 279 } 280 else 281 { 282 if (BIO_write_filename(out,outfile) <= 0) 283 { 284 perror(outfile); 285 goto end; 286 } 287 } 288 289 if (text) 290 if (!RSA_print(out,rsa,0)) 291 { 292 perror(outfile); 293 ERR_print_errors(bio_err); 294 goto end; 295 } 296 297 if (modulus) 298 { 299 BIO_printf(out,"Modulus="); 300 BN_print(out,rsa->n); 301 BIO_printf(out,"\n"); 302 } 303 304 if (check) 305 { 306 int r = RSA_check_key(rsa); 307 308 if (r == 1) 309 BIO_printf(out,"RSA key ok\n"); 310 else if (r == 0) 311 { 312 unsigned long err; 313 314 while ((err = ERR_peek_error()) != 0 && 315 ERR_GET_LIB(err) == ERR_LIB_RSA && 316 ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY && 317 ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE) 318 { 319 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err)); 320 ERR_get_error(); /* remove e from error stack */ 321 } 322 } 323 324 if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */ 325 { 326 ERR_print_errors(bio_err); 327 goto end; 328 } 329 } 330 331 if (noout) 332 { 333 ret = 0; 334 goto end; 335 } 336 BIO_printf(bio_err,"writing RSA key\n"); 337 if (outformat == FORMAT_ASN1) { 338 if(pubout || pubin) i=i2d_RSA_PUBKEY_bio(out,rsa); 339 else i=i2d_RSAPrivateKey_bio(out,rsa); 340 } 341#ifndef OPENSSL_NO_RC4 342 else if (outformat == FORMAT_NETSCAPE) 343 { 344 unsigned char *p,*pp; 345 int size; 346 347 i=1; 348 size=i2d_RSA_NET(rsa,NULL,NULL, sgckey); 349 if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL) 350 { 351 BIO_printf(bio_err,"Memory allocation failure\n"); 352 goto end; 353 } 354 pp=p; 355 i2d_RSA_NET(rsa,&p,NULL, sgckey); 356 BIO_write(out,(char *)pp,size); 357 OPENSSL_free(pp); 358 } 359#endif 360 else if (outformat == FORMAT_PEM) { 361 if(pubout || pubin) 362 i=PEM_write_bio_RSA_PUBKEY(out,rsa); 363 else i=PEM_write_bio_RSAPrivateKey(out,rsa, 364 enc,NULL,0,NULL,passout); 365 } else { 366 BIO_printf(bio_err,"bad output format specified for outfile\n"); 367 goto end; 368 } 369 if (!i) 370 { 371 BIO_printf(bio_err,"unable to write key\n"); 372 ERR_print_errors(bio_err); 373 } 374 else 375 ret=0; 376end: 377 if(out != NULL) BIO_free_all(out); 378 if(rsa != NULL) RSA_free(rsa); 379 if(passin) OPENSSL_free(passin); 380 if(passout) OPENSSL_free(passout); 381 apps_shutdown(); 382 OPENSSL_EXIT(ret); 383 } 384#else /* !OPENSSL_NO_RSA */ 385 386# if PEDANTIC 387static void *dummy=&dummy; 388# endif 389 390#endif 391