rsa.c revision 55714
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 */ 86 87int MAIN(int argc, char **argv) 88 { 89 int ret=1; 90 RSA *rsa=NULL; 91 int i,badops=0; 92 const EVP_CIPHER *enc=NULL; 93 BIO *in=NULL,*out=NULL; 94 int informat,outformat,text=0,check=0,noout=0; 95 char *infile,*outfile,*prog; 96 int modulus=0; 97 98 apps_startup(); 99 100 if (bio_err == NULL) 101 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 102 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 103 104 infile=NULL; 105 outfile=NULL; 106 informat=FORMAT_PEM; 107 outformat=FORMAT_PEM; 108 109 prog=argv[0]; 110 argc--; 111 argv++; 112 while (argc >= 1) 113 { 114 if (strcmp(*argv,"-inform") == 0) 115 { 116 if (--argc < 1) goto bad; 117 informat=str2fmt(*(++argv)); 118 } 119 else if (strcmp(*argv,"-outform") == 0) 120 { 121 if (--argc < 1) goto bad; 122 outformat=str2fmt(*(++argv)); 123 } 124 else if (strcmp(*argv,"-in") == 0) 125 { 126 if (--argc < 1) goto bad; 127 infile= *(++argv); 128 } 129 else if (strcmp(*argv,"-out") == 0) 130 { 131 if (--argc < 1) goto bad; 132 outfile= *(++argv); 133 } 134 else if (strcmp(*argv,"-noout") == 0) 135 noout=1; 136 else if (strcmp(*argv,"-text") == 0) 137 text=1; 138 else if (strcmp(*argv,"-modulus") == 0) 139 modulus=1; 140 else if (strcmp(*argv,"-check") == 0) 141 check=1; 142 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL) 143 { 144 BIO_printf(bio_err,"unknown option %s\n",*argv); 145 badops=1; 146 break; 147 } 148 argc--; 149 argv++; 150 } 151 152 if (badops) 153 { 154bad: 155 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 156 BIO_printf(bio_err,"where options are\n"); 157 BIO_printf(bio_err," -inform arg input format - one of DER NET PEM\n"); 158 BIO_printf(bio_err," -outform arg output format - one of DER NET PEM\n"); 159 BIO_printf(bio_err," -in arg input file\n"); 160 BIO_printf(bio_err," -out arg output file\n"); 161 BIO_printf(bio_err," -des encrypt PEM output with cbc des\n"); 162 BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 163#ifndef NO_IDEA 164 BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n"); 165#endif 166 BIO_printf(bio_err," -text print the key in text\n"); 167 BIO_printf(bio_err," -noout don't print key out\n"); 168 BIO_printf(bio_err," -modulus print the RSA key modulus\n"); 169 BIO_printf(bio_err," -check verify key consistency\n"); 170 goto end; 171 } 172 173 ERR_load_crypto_strings(); 174 175 in=BIO_new(BIO_s_file()); 176 out=BIO_new(BIO_s_file()); 177 if ((in == NULL) || (out == NULL)) 178 { 179 ERR_print_errors(bio_err); 180 goto end; 181 } 182 183 if (infile == NULL) 184 BIO_set_fp(in,stdin,BIO_NOCLOSE); 185 else 186 { 187 if (BIO_read_filename(in,infile) <= 0) 188 { 189 perror(infile); 190 goto end; 191 } 192 } 193 194 BIO_printf(bio_err,"read RSA private key\n"); 195 if (informat == FORMAT_ASN1) 196 rsa=d2i_RSAPrivateKey_bio(in,NULL); 197#ifndef NO_RC4 198 else if (informat == FORMAT_NETSCAPE) 199 { 200 BUF_MEM *buf=NULL; 201 unsigned char *p; 202 int size=0; 203 204 buf=BUF_MEM_new(); 205 for (;;) 206 { 207 if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10))) 208 goto end; 209 i=BIO_read(in,&(buf->data[size]),1024*10); 210 size+=i; 211 if (i == 0) break; 212 if (i < 0) 213 { 214 perror("reading private key"); 215 BUF_MEM_free(buf); 216 goto end; 217 } 218 } 219 p=(unsigned char *)buf->data; 220 rsa=(RSA *)d2i_Netscape_RSA(NULL,&p,(long)size,NULL); 221 BUF_MEM_free(buf); 222 } 223#endif 224 else if (informat == FORMAT_PEM) 225 rsa=PEM_read_bio_RSAPrivateKey(in,NULL,NULL,NULL); 226 else 227 { 228 BIO_printf(bio_err,"bad input format specified for key\n"); 229 goto end; 230 } 231 if (rsa == NULL) 232 { 233 BIO_printf(bio_err,"unable to load Private Key\n"); 234 ERR_print_errors(bio_err); 235 goto end; 236 } 237 238 if (outfile == NULL) 239 BIO_set_fp(out,stdout,BIO_NOCLOSE); 240 else 241 { 242 if (BIO_write_filename(out,outfile) <= 0) 243 { 244 perror(outfile); 245 goto end; 246 } 247 } 248 249 if (text) 250 if (!RSA_print(out,rsa,0)) 251 { 252 perror(outfile); 253 ERR_print_errors(bio_err); 254 goto end; 255 } 256 257 if (modulus) 258 { 259 fprintf(stdout,"Modulus="); 260 BN_print(out,rsa->n); 261 fprintf(stdout,"\n"); 262 } 263 264 if (check) 265 { 266 int r = RSA_check_key(rsa); 267 268 if (r == 1) 269 BIO_printf(out,"RSA key ok\n"); 270 else if (r == 0) 271 { 272 long e; 273 274 while ((e = ERR_peek_error()) != 0 && 275 ERR_GET_LIB(e) == ERR_LIB_RSA && 276 ERR_GET_FUNC(e) == RSA_F_RSA_CHECK_KEY && 277 ERR_GET_REASON(e) != ERR_R_MALLOC_FAILURE) 278 { 279 BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(e)); 280 ERR_get_error(); /* remove e from error stack */ 281 } 282 } 283 284 if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */ 285 { 286 ERR_print_errors(bio_err); 287 goto end; 288 } 289 } 290 291 if (noout) goto end; 292 BIO_printf(bio_err,"writing RSA private key\n"); 293 if (outformat == FORMAT_ASN1) 294 i=i2d_RSAPrivateKey_bio(out,rsa); 295#ifndef NO_RC4 296 else if (outformat == FORMAT_NETSCAPE) 297 { 298 unsigned char *p,*pp; 299 int size; 300 301 i=1; 302 size=i2d_Netscape_RSA(rsa,NULL,NULL); 303 if ((p=(unsigned char *)Malloc(size)) == NULL) 304 { 305 BIO_printf(bio_err,"Malloc failure\n"); 306 goto end; 307 } 308 pp=p; 309 i2d_Netscape_RSA(rsa,&p,NULL); 310 BIO_write(out,(char *)pp,size); 311 Free(pp); 312 } 313#endif 314 else if (outformat == FORMAT_PEM) 315 i=PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,NULL,NULL); 316 else { 317 BIO_printf(bio_err,"bad output format specified for outfile\n"); 318 goto end; 319 } 320 if (!i) 321 { 322 BIO_printf(bio_err,"unable to write private key\n"); 323 ERR_print_errors(bio_err); 324 } 325 else 326 ret=0; 327end: 328 if (in != NULL) BIO_free(in); 329 if (out != NULL) BIO_free(out); 330 if (rsa != NULL) RSA_free(rsa); 331 EXIT(ret); 332 } 333#endif 334