dgst.c revision 109998
1/* apps/dgst.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 <stdio.h> 60#include <string.h> 61#include <stdlib.h> 62#include "apps.h" 63#include <openssl/bio.h> 64#include <openssl/err.h> 65#include <openssl/evp.h> 66#include <openssl/objects.h> 67#include <openssl/x509.h> 68#include <openssl/pem.h> 69 70#undef BUFSIZE 71#define BUFSIZE 1024*8 72 73#undef PROG 74#define PROG dgst_main 75 76int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, 77 EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title, 78 const char *file); 79 80int MAIN(int, char **); 81 82int MAIN(int argc, char **argv) 83 { 84 ENGINE *e = NULL; 85 unsigned char *buf=NULL; 86 int i,err=0; 87 const EVP_MD *md=NULL,*m; 88 BIO *in=NULL,*inp; 89 BIO *bmd=NULL; 90 BIO *out = NULL; 91 const char *name; 92#define PROG_NAME_SIZE 39 93 char pname[PROG_NAME_SIZE+1]; 94 int separator=0; 95 int debug=0; 96 int keyform=FORMAT_PEM; 97 const char *outfile = NULL, *keyfile = NULL; 98 const char *sigfile = NULL, *randfile = NULL; 99 int out_bin = -1, want_pub = 0, do_verify = 0; 100 EVP_PKEY *sigkey = NULL; 101 unsigned char *sigbuf = NULL; 102 int siglen = 0; 103 char *engine=NULL; 104 105 apps_startup(); 106 107 if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL) 108 { 109 BIO_printf(bio_err,"out of memory\n"); 110 goto end; 111 } 112 if (bio_err == NULL) 113 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 114 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 115 116 if (!load_config(bio_err, NULL)) 117 goto end; 118 119 /* first check the program name */ 120 program_name(argv[0],pname,sizeof pname); 121 122 md=EVP_get_digestbyname(pname); 123 124 argc--; 125 argv++; 126 while (argc > 0) 127 { 128 if ((*argv)[0] != '-') break; 129 if (strcmp(*argv,"-c") == 0) 130 separator=1; 131 else if (strcmp(*argv,"-rand") == 0) 132 { 133 if (--argc < 1) break; 134 randfile=*(++argv); 135 } 136 else if (strcmp(*argv,"-out") == 0) 137 { 138 if (--argc < 1) break; 139 outfile=*(++argv); 140 } 141 else if (strcmp(*argv,"-sign") == 0) 142 { 143 if (--argc < 1) break; 144 keyfile=*(++argv); 145 } 146 else if (strcmp(*argv,"-verify") == 0) 147 { 148 if (--argc < 1) break; 149 keyfile=*(++argv); 150 want_pub = 1; 151 do_verify = 1; 152 } 153 else if (strcmp(*argv,"-prverify") == 0) 154 { 155 if (--argc < 1) break; 156 keyfile=*(++argv); 157 do_verify = 1; 158 } 159 else if (strcmp(*argv,"-signature") == 0) 160 { 161 if (--argc < 1) break; 162 sigfile=*(++argv); 163 } 164 else if (strcmp(*argv,"-keyform") == 0) 165 { 166 if (--argc < 1) break; 167 keyform=str2fmt(*(++argv)); 168 } 169 else if (strcmp(*argv,"-engine") == 0) 170 { 171 if (--argc < 1) break; 172 engine= *(++argv); 173 } 174 else if (strcmp(*argv,"-hex") == 0) 175 out_bin = 0; 176 else if (strcmp(*argv,"-binary") == 0) 177 out_bin = 1; 178 else if (strcmp(*argv,"-d") == 0) 179 debug=1; 180 else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL) 181 md=m; 182 else 183 break; 184 argc--; 185 argv++; 186 } 187 188 if (md == NULL) 189 md=EVP_md5(); 190 191 if(do_verify && !sigfile) { 192 BIO_printf(bio_err, "No signature to verify: use the -signature option\n"); 193 err = 1; 194 goto end; 195 } 196 197 if ((argc > 0) && (argv[0][0] == '-')) /* bad option */ 198 { 199 BIO_printf(bio_err,"unknown option '%s'\n",*argv); 200 BIO_printf(bio_err,"options are\n"); 201 BIO_printf(bio_err,"-c to output the digest with separating colons\n"); 202 BIO_printf(bio_err,"-d to output debug info\n"); 203 BIO_printf(bio_err,"-hex output as hex dump\n"); 204 BIO_printf(bio_err,"-binary output in binary form\n"); 205 BIO_printf(bio_err,"-sign file sign digest using private key in file\n"); 206 BIO_printf(bio_err,"-verify file verify a signature using public key in file\n"); 207 BIO_printf(bio_err,"-prverify file verify a signature using private key in file\n"); 208 BIO_printf(bio_err,"-keyform arg key file format (PEM or ENGINE)\n"); 209 BIO_printf(bio_err,"-signature file signature to verify\n"); 210 BIO_printf(bio_err,"-binary output in binary form\n"); 211 BIO_printf(bio_err,"-engine e use engine e, possibly a hardware device.\n"); 212 213 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm (default)\n", 214 LN_md5,LN_md5); 215 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 216 LN_md4,LN_md4); 217 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 218 LN_md2,LN_md2); 219 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 220 LN_sha1,LN_sha1); 221 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 222 LN_sha,LN_sha); 223 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 224 LN_mdc2,LN_mdc2); 225 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 226 LN_ripemd160,LN_ripemd160); 227 err=1; 228 goto end; 229 } 230 231 e = setup_engine(bio_err, engine, 0); 232 233 in=BIO_new(BIO_s_file()); 234 bmd=BIO_new(BIO_f_md()); 235 if (debug) 236 { 237 BIO_set_callback(in,BIO_debug_callback); 238 /* needed for windows 3.1 */ 239 BIO_set_callback_arg(in,bio_err); 240 } 241 242 if ((in == NULL) || (bmd == NULL)) 243 { 244 ERR_print_errors(bio_err); 245 goto end; 246 } 247 248 if(out_bin == -1) { 249 if(keyfile) out_bin = 1; 250 else out_bin = 0; 251 } 252 253 if(randfile) 254 app_RAND_load_file(randfile, bio_err, 0); 255 256 if(outfile) { 257 if(out_bin) 258 out = BIO_new_file(outfile, "wb"); 259 else out = BIO_new_file(outfile, "w"); 260 } else { 261 out = BIO_new_fp(stdout, BIO_NOCLOSE); 262#ifdef OPENSSL_SYS_VMS 263 { 264 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 265 out = BIO_push(tmpbio, out); 266 } 267#endif 268 } 269 270 if(!out) { 271 BIO_printf(bio_err, "Error opening output file %s\n", 272 outfile ? outfile : "(stdout)"); 273 ERR_print_errors(bio_err); 274 goto end; 275 } 276 277 if(keyfile) 278 { 279 if (want_pub) 280 sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL, 281 e, "key file"); 282 else 283 sigkey = load_key(bio_err, keyfile, keyform, 0, NULL, 284 e, "key file"); 285 if (!sigkey) 286 { 287 /* load_[pub]key() has already printed an appropriate 288 message */ 289 goto end; 290 } 291 } 292 293 if(sigfile && sigkey) { 294 BIO *sigbio; 295 sigbio = BIO_new_file(sigfile, "rb"); 296 siglen = EVP_PKEY_size(sigkey); 297 sigbuf = OPENSSL_malloc(siglen); 298 if(!sigbio) { 299 BIO_printf(bio_err, "Error opening signature file %s\n", 300 sigfile); 301 ERR_print_errors(bio_err); 302 goto end; 303 } 304 siglen = BIO_read(sigbio, sigbuf, siglen); 305 BIO_free(sigbio); 306 if(siglen <= 0) { 307 BIO_printf(bio_err, "Error reading signature file %s\n", 308 sigfile); 309 ERR_print_errors(bio_err); 310 goto end; 311 } 312 } 313 314 315 316 /* we use md as a filter, reading from 'in' */ 317 BIO_set_md(bmd,md); 318 inp=BIO_push(bmd,in); 319 320 if (argc == 0) 321 { 322 BIO_set_fp(in,stdin,BIO_NOCLOSE); 323 err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf, 324 siglen,"","(stdin)"); 325 } 326 else 327 { 328 name=OBJ_nid2sn(md->type); 329 for (i=0; i<argc; i++) 330 { 331 char *tmp,*tofree=NULL; 332 int r; 333 334 if (BIO_read_filename(in,argv[i]) <= 0) 335 { 336 perror(argv[i]); 337 err++; 338 continue; 339 } 340 if(!out_bin) 341 { 342 tmp=tofree=OPENSSL_malloc(strlen(name)+strlen(argv[i])+5); 343 sprintf(tmp,"%s(%s)= ",name,argv[i]); 344 } 345 else 346 tmp=""; 347 r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf, 348 siglen,tmp,argv[i]); 349 if(r) 350 err=r; 351 if(tofree) 352 OPENSSL_free(tofree); 353 (void)BIO_reset(bmd); 354 } 355 } 356end: 357 if (buf != NULL) 358 { 359 OPENSSL_cleanse(buf,BUFSIZE); 360 OPENSSL_free(buf); 361 } 362 if (in != NULL) BIO_free(in); 363 BIO_free_all(out); 364 EVP_PKEY_free(sigkey); 365 if(sigbuf) OPENSSL_free(sigbuf); 366 if (bmd != NULL) BIO_free(bmd); 367 apps_shutdown(); 368 OPENSSL_EXIT(err); 369 } 370 371int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, 372 EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title, 373 const char *file) 374 { 375 int len; 376 int i; 377 378 for (;;) 379 { 380 i=BIO_read(bp,(char *)buf,BUFSIZE); 381 if(i < 0) 382 { 383 BIO_printf(bio_err, "Read Error in %s\n",file); 384 ERR_print_errors(bio_err); 385 return 1; 386 } 387 if (i == 0) break; 388 } 389 if(sigin) 390 { 391 EVP_MD_CTX *ctx; 392 BIO_get_md_ctx(bp, &ctx); 393 i = EVP_VerifyFinal(ctx, sigin, (unsigned int)siglen, key); 394 if(i > 0) 395 BIO_printf(out, "Verified OK\n"); 396 else if(i == 0) 397 { 398 BIO_printf(out, "Verification Failure\n"); 399 return 1; 400 } 401 else 402 { 403 BIO_printf(bio_err, "Error Verifying Data\n"); 404 ERR_print_errors(bio_err); 405 return 1; 406 } 407 return 0; 408 } 409 if(key) 410 { 411 EVP_MD_CTX *ctx; 412 BIO_get_md_ctx(bp, &ctx); 413 if(!EVP_SignFinal(ctx, buf, (unsigned int *)&len, key)) 414 { 415 BIO_printf(bio_err, "Error Signing Data\n"); 416 ERR_print_errors(bio_err); 417 return 1; 418 } 419 } 420 else 421 len=BIO_gets(bp,(char *)buf,BUFSIZE); 422 423 if(binout) BIO_write(out, buf, len); 424 else 425 { 426 BIO_write(out,title,strlen(title)); 427 for (i=0; i<len; i++) 428 { 429 if (sep && (i != 0)) 430 BIO_printf(out, ":"); 431 BIO_printf(out, "%02x",buf[i]); 432 } 433 BIO_printf(out, "\n"); 434 } 435 return 0; 436 } 437 438