dgst.c revision 100928
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 76void do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, 77 EVP_PKEY *key, unsigned char *sigin, int siglen); 78 79int MAIN(int, char **); 80 81int MAIN(int argc, char **argv) 82 { 83 unsigned char *buf=NULL; 84 int i,err=0; 85 const EVP_MD *md=NULL,*m; 86 BIO *in=NULL,*inp; 87 BIO *bmd=NULL; 88 BIO *out = NULL; 89 const char *name; 90#define PROG_NAME_SIZE 39 91 char pname[PROG_NAME_SIZE+1]; 92 int separator=0; 93 int debug=0; 94 const char *outfile = NULL, *keyfile = NULL; 95 const char *sigfile = NULL, *randfile = NULL; 96 int out_bin = -1, want_pub = 0, do_verify = 0; 97 EVP_PKEY *sigkey = NULL; 98 unsigned char *sigbuf = NULL; 99 int siglen = 0; 100 101 apps_startup(); 102 103 if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL) 104 { 105 BIO_printf(bio_err,"out of memory\n"); 106 goto end; 107 } 108 if (bio_err == NULL) 109 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 110 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 111 112 /* first check the program name */ 113 program_name(argv[0],pname,PROG_NAME_SIZE); 114 115 md=EVP_get_digestbyname(pname); 116 117 argc--; 118 argv++; 119 while (argc > 0) 120 { 121 if ((*argv)[0] != '-') break; 122 if (strcmp(*argv,"-c") == 0) 123 separator=1; 124 else if (strcmp(*argv,"-rand") == 0) 125 { 126 if (--argc < 1) break; 127 randfile=*(++argv); 128 } 129 else if (strcmp(*argv,"-out") == 0) 130 { 131 if (--argc < 1) break; 132 outfile=*(++argv); 133 } 134 else if (strcmp(*argv,"-sign") == 0) 135 { 136 if (--argc < 1) break; 137 keyfile=*(++argv); 138 } 139 else if (strcmp(*argv,"-verify") == 0) 140 { 141 if (--argc < 1) break; 142 keyfile=*(++argv); 143 want_pub = 1; 144 do_verify = 1; 145 } 146 else if (strcmp(*argv,"-prverify") == 0) 147 { 148 if (--argc < 1) break; 149 keyfile=*(++argv); 150 do_verify = 1; 151 } 152 else if (strcmp(*argv,"-signature") == 0) 153 { 154 if (--argc < 1) break; 155 sigfile=*(++argv); 156 } 157 else if (strcmp(*argv,"-hex") == 0) 158 out_bin = 0; 159 else if (strcmp(*argv,"-binary") == 0) 160 out_bin = 1; 161 else if (strcmp(*argv,"-d") == 0) 162 debug=1; 163 else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL) 164 md=m; 165 else 166 break; 167 argc--; 168 argv++; 169 } 170 171 if (md == NULL) 172 md=EVP_md5(); 173 174 if(do_verify && !sigfile) { 175 BIO_printf(bio_err, "No signature to verify: use the -signature option\n"); 176 err = 1; 177 goto end; 178 } 179 180 if ((argc > 0) && (argv[0][0] == '-')) /* bad option */ 181 { 182 BIO_printf(bio_err,"unknown option '%s'\n",*argv); 183 BIO_printf(bio_err,"options are\n"); 184 BIO_printf(bio_err,"-c to output the digest with separating colons\n"); 185 BIO_printf(bio_err,"-d to output debug info\n"); 186 BIO_printf(bio_err,"-hex output as hex dump\n"); 187 BIO_printf(bio_err,"-binary output in binary form\n"); 188 BIO_printf(bio_err,"-sign file sign digest using private key in file\n"); 189 BIO_printf(bio_err,"-verify file verify a signature using public key in file\n"); 190 BIO_printf(bio_err,"-prverify file verify a signature using private key in file\n"); 191 BIO_printf(bio_err,"-signature file signature to verify\n"); 192 BIO_printf(bio_err,"-binary output in binary form\n"); 193 194 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm (default)\n", 195 LN_md5,LN_md5); 196 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 197 LN_md4,LN_md4); 198 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 199 LN_md2,LN_md2); 200 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 201 LN_sha1,LN_sha1); 202 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 203 LN_sha,LN_sha); 204 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 205 LN_mdc2,LN_mdc2); 206 BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n", 207 LN_ripemd160,LN_ripemd160); 208 err=1; 209 goto end; 210 } 211 212 in=BIO_new(BIO_s_file()); 213 bmd=BIO_new(BIO_f_md()); 214 if (debug) 215 { 216 BIO_set_callback(in,BIO_debug_callback); 217 /* needed for windows 3.1 */ 218 BIO_set_callback_arg(in,bio_err); 219 } 220 221 if ((in == NULL) || (bmd == NULL)) 222 { 223 ERR_print_errors(bio_err); 224 goto end; 225 } 226 227 if(out_bin == -1) { 228 if(keyfile) out_bin = 1; 229 else out_bin = 0; 230 } 231 232 if(randfile) 233 app_RAND_load_file(randfile, bio_err, 0); 234 235 if(outfile) { 236 if(out_bin) 237 out = BIO_new_file(outfile, "wb"); 238 else out = BIO_new_file(outfile, "w"); 239 } else { 240 out = BIO_new_fp(stdout, BIO_NOCLOSE); 241#ifdef VMS 242 { 243 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 244 out = BIO_push(tmpbio, out); 245 } 246#endif 247 } 248 249 if(!out) { 250 BIO_printf(bio_err, "Error opening output file %s\n", 251 outfile ? outfile : "(stdout)"); 252 ERR_print_errors(bio_err); 253 goto end; 254 } 255 256 if(keyfile) { 257 BIO *keybio; 258 keybio = BIO_new_file(keyfile, "r"); 259 if(!keybio) { 260 BIO_printf(bio_err, "Error opening key file %s\n", 261 keyfile); 262 ERR_print_errors(bio_err); 263 goto end; 264 } 265 266 if(want_pub) 267 sigkey = PEM_read_bio_PUBKEY(keybio, NULL, NULL, NULL); 268 else sigkey = PEM_read_bio_PrivateKey(keybio, NULL, NULL, NULL); 269 BIO_free(keybio); 270 if(!sigkey) { 271 BIO_printf(bio_err, "Error reading key file %s\n", 272 keyfile); 273 ERR_print_errors(bio_err); 274 goto end; 275 } 276 } 277 278 if(sigfile && sigkey) { 279 BIO *sigbio; 280 sigbio = BIO_new_file(sigfile, "rb"); 281 siglen = EVP_PKEY_size(sigkey); 282 sigbuf = OPENSSL_malloc(siglen); 283 if(!sigbio) { 284 BIO_printf(bio_err, "Error opening signature file %s\n", 285 sigfile); 286 ERR_print_errors(bio_err); 287 goto end; 288 } 289 siglen = BIO_read(sigbio, sigbuf, siglen); 290 BIO_free(sigbio); 291 if(siglen <= 0) { 292 BIO_printf(bio_err, "Error reading signature file %s\n", 293 sigfile); 294 ERR_print_errors(bio_err); 295 goto end; 296 } 297 } 298 299 300 301 /* we use md as a filter, reading from 'in' */ 302 BIO_set_md(bmd,md); 303 inp=BIO_push(bmd,in); 304 305 if (argc == 0) 306 { 307 BIO_set_fp(in,stdin,BIO_NOCLOSE); 308 do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf, siglen); 309 } 310 else 311 { 312 name=OBJ_nid2sn(md->type); 313 for (i=0; i<argc; i++) 314 { 315 if (BIO_read_filename(in,argv[i]) <= 0) 316 { 317 perror(argv[i]); 318 err++; 319 continue; 320 } 321 if(!out_bin) BIO_printf(out, "%s(%s)= ",name,argv[i]); 322 do_fp(out, buf,inp,separator, out_bin, sigkey, 323 sigbuf, siglen); 324 (void)BIO_reset(bmd); 325 } 326 } 327end: 328 if (buf != NULL) 329 { 330 memset(buf,0,BUFSIZE); 331 OPENSSL_free(buf); 332 } 333 if (in != NULL) BIO_free(in); 334 BIO_free_all(out); 335 EVP_PKEY_free(sigkey); 336 if(sigbuf) OPENSSL_free(sigbuf); 337 if (bmd != NULL) BIO_free(bmd); 338 EXIT(err); 339 } 340 341void do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, 342 EVP_PKEY *key, unsigned char *sigin, int siglen) 343 { 344 int len; 345 int i; 346 347 for (;;) 348 { 349 i=BIO_read(bp,(char *)buf,BUFSIZE); 350 if (i <= 0) break; 351 } 352 if(sigin) 353 { 354 EVP_MD_CTX *ctx; 355 BIO_get_md_ctx(bp, &ctx); 356 i = EVP_VerifyFinal(ctx, sigin, (unsigned int)siglen, key); 357 if(i > 0) BIO_printf(out, "Verified OK\n"); 358 else if(i == 0) BIO_printf(out, "Verification Failure\n"); 359 else 360 { 361 BIO_printf(bio_err, "Error Verifying Data\n"); 362 ERR_print_errors(bio_err); 363 } 364 return; 365 } 366 if(key) 367 { 368 EVP_MD_CTX *ctx; 369 BIO_get_md_ctx(bp, &ctx); 370 if(!EVP_SignFinal(ctx, buf, (unsigned int *)&len, key)) 371 { 372 BIO_printf(bio_err, "Error Signing Data\n"); 373 ERR_print_errors(bio_err); 374 return; 375 } 376 } 377 else 378 len=BIO_gets(bp,(char *)buf,BUFSIZE); 379 380 if(binout) BIO_write(out, buf, len); 381 else 382 { 383 for (i=0; i<len; i++) 384 { 385 if (sep && (i != 0)) 386 BIO_printf(out, ":"); 387 BIO_printf(out, "%02x",buf[i]); 388 } 389 BIO_printf(out, "\n"); 390 } 391 } 392 393