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 #ifndef NO_RSA 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <time.h> 64 #include "apps.h" 65 #include <openssl/bio.h> 66 #include <openssl/err.h> 67 #include <openssl/rsa.h> 68 #include <openssl/evp.h> 69 #include <openssl/x509.h> 70 #include <openssl/pem.h> 71 72 #undef PROG 73 #define PROG rsa_main 74 75 /* -inform arg - input format - default PEM (one of DER, NET or PEM) 76 * -outform arg - output format - default PEM 77 * -in arg - input file - default stdin 78 * -out arg - output file - default stdout 79 * -des - encrypt output if PEM format with DES in cbc mode 80 * -des3 - encrypt output if PEM format 81 * -idea - encrypt output if PEM format 82 * -text - print a text version 83 * -modulus - print the RSA key modulus 84 * -check - verify key consistency 85 * -pubin - Expect a public key in input file. 86 * -pubout - Output a public key. 87 */ 88 89 int MAIN(int, char **); 90 91 int MAIN(int argc, char **argv) 92 { 93 int ret=1; 94 RSA *rsa=NULL; 95 int i,badops=0; 96 const EVP_CIPHER *enc=NULL; 97 BIO *in=NULL,*out=NULL; 98 int informat,outformat,text=0,check=0,noout=0; 99 int pubin = 0, pubout = 0; 100 char *infile,*outfile,*prog; 101 char *passargin = NULL, *passargout = NULL; 102 char *passin = NULL, *passout = NULL; 103 int modulus=0; 104 105 apps_startup(); 106 107 if (bio_err == NULL) 108 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 109 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 110 111 infile=NULL; 112 outfile=NULL; 113 informat=FORMAT_PEM; 114 outformat=FORMAT_PEM; 115 116 prog=argv[0]; 117 argc--; 118 argv++; 119 while (argc >= 1) 120 { 121 if (strcmp(*argv,"-inform") == 0) 122 { 123 if (--argc < 1) goto bad; 124 informat=str2fmt(*(++argv)); 125 } 126 else if (strcmp(*argv,"-outform") == 0) 127 { 128 if (--argc < 1) goto bad; 129 outformat=str2fmt(*(++argv)); 130 } 131 else if (strcmp(*argv,"-in") == 0) 132 { 133 if (--argc < 1) goto bad; 134 infile= *(++argv); 135 } 136 else if (strcmp(*argv,"-out") == 0) 137 { 138 if (--argc < 1) goto bad; 139 outfile= *(++argv); 140 } 141 else if (strcmp(*argv,"-passin") == 0) 142 { 143 if (--argc < 1) goto bad; 144 passargin= *(++argv); 145 } 146 else if (strcmp(*argv,"-passout") == 0) 147 { 148 if (--argc < 1) goto bad; 149 passargout= *(++argv); 150 } 151 else if (strcmp(*argv,"-pubin") == 0) 152 pubin=1; 153 else if (strcmp(*argv,"-pubout") == 0) 154 pubout=1; 155 else if (strcmp(*argv,"-noout") == 0) 156 noout=1; 157 else if (strcmp(*argv,"-text") == 0) 158 text=1; 159 else if (strcmp(*argv,"-modulus") == 0) 160 modulus=1; 161 else if (strcmp(*argv,"-check") == 0) 162 check=1; 163 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL) 164 { 165 BIO_printf(bio_err,"unknown option %s\n",*argv); 166 badops=1; 167 break; 168 } 169 argc--; 170 argv++; 171 } 172 173 if (badops) 174 { 175 bad: 176 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 177 BIO_printf(bio_err,"where options are\n"); 178 BIO_printf(bio_err," -inform arg input format - one of DER NET PEM\n"); 179 BIO_printf(bio_err," -outform arg output format - one of DER NET PEM\n"); 180 BIO_printf(bio_err," -in arg input file\n"); 181 BIO_printf(bio_err," -passin arg input file pass phrase source\n"); 182 BIO_printf(bio_err," -out arg output file\n"); 183 BIO_printf(bio_err," -passout arg output file pass phrase source\n"); 184 BIO_printf(bio_err," -des encrypt PEM output with cbc des\n"); 185 BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 186 #ifndef NO_IDEA 187 BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n"); 188 #endif 189 BIO_printf(bio_err," -text print the key in text\n"); 190 BIO_printf(bio_err," -noout don't print key out\n"); 191 BIO_printf(bio_err," -modulus print the RSA key modulus\n"); 192 BIO_printf(bio_err," -check verify key consistency\n"); 193 BIO_printf(bio_err," -pubin expect a public key in input file\n"); 194 BIO_printf(bio_err," -pubout output a public key\n"); 195 goto end; 196 } 197 198 ERR_load_crypto_strings(); 199 200 if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 201 BIO_printf(bio_err, "Error getting passwords\n"); 202 goto end; 203 } 204 205 if(check && pubin) { 206 BIO_printf(bio_err, "Only private keys can be checked\n"); 207 goto end; 208 } 209 210 in=BIO_new(BIO_s_file()); 211 out=BIO_new(BIO_s_file()); 212 if ((in == NULL) || (out == NULL)) 213 { 214 ERR_print_errors(bio_err); 215 goto end; 216 } 217 218 if (infile == NULL) 219 BIO_set_fp(in,stdin,BIO_NOCLOSE); 220 else 221 { 222 if (BIO_read_filename(in,infile) <= 0) 223 { 224 perror(infile); 225 goto end; 226 } 227 } 228 229 BIO_printf(bio_err,"read RSA key\n"); 230 if (informat == FORMAT_ASN1) { 231 if (pubin) rsa=d2i_RSA_PUBKEY_bio(in,NULL); 232 else rsa=d2i_RSAPrivateKey_bio(in,NULL); 233 } 234 #ifndef NO_RC4 235 else if (informat == FORMAT_NETSCAPE) 236 { 237 BUF_MEM *buf=NULL; 238 unsigned char *p; 239 int size=0; 240 241 buf=BUF_MEM_new(); 242 for (;;) 243 { 244 if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10))) 245 goto end; 246 i=BIO_read(in,&(buf->data[size]),1024*10); 247 size+=i; 248 if (i == 0) break; 249 if (i < 0) 250 { 251 perror("reading private key"); 252 BUF_MEM_free(buf); 253 goto end; 254 } 255 } 256 p=(unsigned char *)buf->data; 257 rsa=d2i_Netscape_RSA(NULL,&p,(long)size,NULL); 258 BUF_MEM_free(buf); 259 } 260 #endif 261 else if (informat == FORMAT_PEM) { 262 if(pubin) rsa=PEM_read_bio_RSA_PUBKEY(in,NULL,NULL,NULL); 263 else rsa=PEM_read_bio_RSAPrivateKey(in,NULL, NULL,passin); 264 } 265 else 266 { 267 BIO_printf(bio_err,"bad input format specified for key\n"); 268 goto end; 269 } 270 if (rsa == NULL) 271 { 272 BIO_printf(bio_err,"unable to load key\n"); 273 ERR_print_errors(bio_err); 274 goto end; 275 } 276 277 if (outfile == NULL) 278 BIO_set_fp(out,stdout,BIO_NOCLOSE); 279 else 280 { 281 if (BIO_write_filename(out,outfile) <= 0) 282 { 283 perror(outfile); 284 goto end; 285 } 286 } 287 288 if (text) 289 if (!RSA_print(out,rsa,0)) 290 { 291 perror(outfile); 292 ERR_print_errors(bio_err); 293 goto end; 294 } 295 296 if (modulus) 297 { 298 BIO_printf(out,"Modulus="); 299 BN_print(out,rsa->n); 300 BIO_printf(out,"\n"); 301 } 302 303 if (check) 304 { 305 int r = RSA_check_key(rsa); 306 307 if (r == 1) 308 BIO_printf(out,"RSA key ok\n"); 309 else if (r == 0) 310 { 311 long e; 312 313 while ((e = ERR_peek_error()) != 0 && 314 ERR_GET_LIB(e) == ERR_LIB_RSA && 315 ERR_GET_FUNC(e) == RSA_F_RSA_CHECK_KEY && 316 ERR_GET_REASON(e) != ERR_R_MALLOC_FAILURE) 317 { 318 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(e)); 319 ERR_get_error(); /* remove e from error stack */ 320 } 321 } 322 323 if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */ 324 { 325 ERR_print_errors(bio_err); 326 goto end; 327 } 328 } 329 330 if (noout) 331 { 332 ret = 0; 333 goto end; 334 } 335 BIO_printf(bio_err,"writing RSA key\n"); 336 if (outformat == FORMAT_ASN1) { 337 if(pubout || pubin) i=i2d_RSA_PUBKEY_bio(out,rsa); 338 else i=i2d_RSAPrivateKey_bio(out,rsa); 339 } 340 #ifndef NO_RC4 341 else if (outformat == FORMAT_NETSCAPE) 342 { 343 unsigned char *p,*pp; 344 int size; 345 346 i=1; 347 size=i2d_Netscape_RSA(rsa,NULL,NULL); 348 if ((p=(unsigned char *)Malloc(size)) == NULL) 349 { 350 BIO_printf(bio_err,"Malloc failure\n"); 351 goto end; 352 } 353 pp=p; 354 i2d_Netscape_RSA(rsa,&p,NULL); 355 BIO_write(out,(char *)pp,size); 356 Free(pp); 357 } 358 #endif 359 else if (outformat == FORMAT_PEM) { 360 if(pubout || pubin) 361 i=PEM_write_bio_RSA_PUBKEY(out,rsa); 362 else i=PEM_write_bio_RSAPrivateKey(out,rsa, 363 enc,NULL,0,NULL,passout); 364 } else { 365 BIO_printf(bio_err,"bad output format specified for outfile\n"); 366 goto end; 367 } 368 if (!i) 369 { 370 BIO_printf(bio_err,"unable to write key\n"); 371 ERR_print_errors(bio_err); 372 } 373 else 374 ret=0; 375 end: 376 if(in != NULL) BIO_free(in); 377 if(out != NULL) BIO_free(out); 378 if(rsa != NULL) RSA_free(rsa); 379 if(passin) Free(passin); 380 if(passout) Free(passout); 381 EXIT(ret); 382 } 383 #else /* !NO_RSA */ 384 385 # if PEDANTIC 386 static void *dummy=&dummy; 387 # endif 388 389 #endif 390