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#include <openssl/hmac.h>
70
71#undef BUFSIZE
72#define BUFSIZE	1024*8
73
74#undef PROG
75#define PROG	dgst_main
76
77int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
78	  EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title,
79	  const char *file,BIO *bmd,const char *hmac_key, int non_fips_allow);
80
81int MAIN(int, char **);
82
83int MAIN(int argc, char **argv)
84	{
85	ENGINE *e = NULL;
86	unsigned char *buf=NULL;
87	int i,err=1;
88	const EVP_MD *md=NULL,*m;
89	BIO *in=NULL,*inp;
90	BIO *bmd=NULL;
91	BIO *out = NULL;
92	const char *name;
93#define PROG_NAME_SIZE  39
94	char pname[PROG_NAME_SIZE+1];
95	int separator=0;
96	int debug=0;
97	int keyform=FORMAT_PEM;
98	const char *outfile = NULL, *keyfile = NULL;
99	const char *sigfile = NULL, *randfile = NULL;
100	int out_bin = -1, want_pub = 0, do_verify = 0;
101	EVP_PKEY *sigkey = NULL;
102	unsigned char *sigbuf = NULL;
103	int siglen = 0;
104	unsigned int sig_flags = 0;
105	char *passargin = NULL, *passin = NULL;
106#ifndef OPENSSL_NO_ENGINE
107	char *engine=NULL;
108#endif
109	char *hmac_key=NULL;
110	int non_fips_allow = 0;
111
112	apps_startup();
113ERR_load_crypto_strings();
114	if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL)
115		{
116		BIO_printf(bio_err,"out of memory\n");
117		goto end;
118		}
119	if (bio_err == NULL)
120		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
121			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
122
123	if (!load_config(bio_err, NULL))
124		goto end;
125
126	/* first check the program name */
127	program_name(argv[0],pname,sizeof pname);
128
129	md=EVP_get_digestbyname(pname);
130
131	argc--;
132	argv++;
133	while (argc > 0)
134		{
135		if ((*argv)[0] != '-') break;
136		if (strcmp(*argv,"-c") == 0)
137			separator=1;
138		else if (strcmp(*argv,"-rand") == 0)
139			{
140			if (--argc < 1) break;
141			randfile=*(++argv);
142			}
143		else if (strcmp(*argv,"-out") == 0)
144			{
145			if (--argc < 1) break;
146			outfile=*(++argv);
147			}
148		else if (strcmp(*argv,"-sign") == 0)
149			{
150			if (--argc < 1) break;
151			keyfile=*(++argv);
152			}
153		else if (!strcmp(*argv,"-passin"))
154			{
155			if (--argc < 1)
156				break;
157			passargin=*++argv;
158			}
159		else if (strcmp(*argv,"-verify") == 0)
160			{
161			if (--argc < 1) break;
162			keyfile=*(++argv);
163			want_pub = 1;
164			do_verify = 1;
165			}
166		else if (strcmp(*argv,"-prverify") == 0)
167			{
168			if (--argc < 1) break;
169			keyfile=*(++argv);
170			do_verify = 1;
171			}
172		else if (strcmp(*argv,"-x931") == 0)
173			sig_flags = EVP_MD_CTX_FLAG_PAD_X931;
174		else if (strcmp(*argv,"-pss_saltlen") == 0)
175			{
176			int saltlen;
177			if (--argc < 1) break;
178			saltlen=atoi(*(++argv));
179			if (saltlen == -1)
180				sig_flags = EVP_MD_CTX_FLAG_PSS_MREC;
181			else if (saltlen == -2)
182				sig_flags = EVP_MD_CTX_FLAG_PSS_MDLEN;
183			else if (saltlen < -2 || saltlen >= 0xFFFE)
184				{
185				BIO_printf(bio_err, "Invalid PSS salt length %d\n", saltlen);
186				goto end;
187				}
188			else
189				sig_flags = saltlen;
190			sig_flags <<= 16;
191			sig_flags |= EVP_MD_CTX_FLAG_PAD_PSS;
192			}
193		else if (strcmp(*argv,"-signature") == 0)
194			{
195			if (--argc < 1) break;
196			sigfile=*(++argv);
197			}
198		else if (strcmp(*argv,"-keyform") == 0)
199			{
200			if (--argc < 1) break;
201			keyform=str2fmt(*(++argv));
202			}
203#ifndef OPENSSL_NO_ENGINE
204		else if (strcmp(*argv,"-engine") == 0)
205			{
206			if (--argc < 1) break;
207			engine= *(++argv);
208			}
209#endif
210		else if (strcmp(*argv,"-hex") == 0)
211			out_bin = 0;
212		else if (strcmp(*argv,"-binary") == 0)
213			out_bin = 1;
214		else if (strcmp(*argv,"-d") == 0)
215			debug=1;
216		else if (strcmp(*argv,"-non-fips-allow") == 0)
217			non_fips_allow=1;
218		else if (!strcmp(*argv,"-fips-fingerprint"))
219			hmac_key = "etaonrishdlcupfm";
220		else if (!strcmp(*argv,"-hmac"))
221			{
222			if (--argc < 1)
223				break;
224			hmac_key=*++argv;
225			}
226		else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
227			md=m;
228		else
229			break;
230		argc--;
231		argv++;
232		}
233
234	if (md == NULL)
235		md=EVP_md5();
236
237	if(do_verify && !sigfile) {
238		BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
239		err = 1;
240		goto end;
241	}
242
243	if ((argc > 0) && (argv[0][0] == '-')) /* bad option */
244		{
245		BIO_printf(bio_err,"unknown option '%s'\n",*argv);
246		BIO_printf(bio_err,"options are\n");
247		BIO_printf(bio_err,"-c              to output the digest with separating colons\n");
248		BIO_printf(bio_err,"-d              to output debug info\n");
249		BIO_printf(bio_err,"-hex            output as hex dump\n");
250		BIO_printf(bio_err,"-binary         output in binary form\n");
251		BIO_printf(bio_err,"-sign   file    sign digest using private key in file\n");
252		BIO_printf(bio_err,"-verify file    verify a signature using public key in file\n");
253		BIO_printf(bio_err,"-prverify file  verify a signature using private key in file\n");
254		BIO_printf(bio_err,"-keyform arg    key file format (PEM or ENGINE)\n");
255		BIO_printf(bio_err,"-signature file signature to verify\n");
256		BIO_printf(bio_err,"-binary         output in binary form\n");
257		BIO_printf(bio_err,"-hmac key       create hashed MAC with key\n");
258#ifndef OPENSSL_NO_ENGINE
259		BIO_printf(bio_err,"-engine e       use engine e, possibly a hardware device.\n");
260#endif
261
262		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm (default)\n",
263			LN_md5,LN_md5);
264		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
265			LN_md4,LN_md4);
266		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
267			LN_md2,LN_md2);
268#ifndef OPENSSL_NO_SHA
269		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
270			LN_sha1,LN_sha1);
271		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
272			LN_sha,LN_sha);
273#ifndef OPENSSL_NO_SHA256
274		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
275			LN_sha224,LN_sha224);
276		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
277			LN_sha256,LN_sha256);
278#endif
279#ifndef OPENSSL_NO_SHA512
280		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
281			LN_sha384,LN_sha384);
282		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
283			LN_sha512,LN_sha512);
284#endif
285#endif
286		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
287			LN_mdc2,LN_mdc2);
288		BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
289			LN_ripemd160,LN_ripemd160);
290		err=1;
291		goto end;
292		}
293
294#ifndef OPENSSL_NO_ENGINE
295        e = setup_engine(bio_err, engine, 0);
296#endif
297
298	in=BIO_new(BIO_s_file());
299	bmd=BIO_new(BIO_f_md());
300	if (debug)
301		{
302		BIO_set_callback(in,BIO_debug_callback);
303		/* needed for windows 3.1 */
304		BIO_set_callback_arg(in,(char *)bio_err);
305		}
306
307	if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
308		{
309		BIO_printf(bio_err, "Error getting password\n");
310		goto end;
311		}
312
313	if ((in == NULL) || (bmd == NULL))
314		{
315		ERR_print_errors(bio_err);
316		goto end;
317		}
318
319	if(out_bin == -1) {
320		if(keyfile) out_bin = 1;
321		else out_bin = 0;
322	}
323
324	if(randfile)
325		app_RAND_load_file(randfile, bio_err, 0);
326
327	if(outfile) {
328		if(out_bin)
329			out = BIO_new_file(outfile, "wb");
330		else    out = BIO_new_file(outfile, "w");
331	} else {
332		out = BIO_new_fp(stdout, BIO_NOCLOSE);
333#ifdef OPENSSL_SYS_VMS
334		{
335		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
336		out = BIO_push(tmpbio, out);
337		}
338#endif
339	}
340
341	if(!out) {
342		BIO_printf(bio_err, "Error opening output file %s\n",
343					outfile ? outfile : "(stdout)");
344		ERR_print_errors(bio_err);
345		goto end;
346	}
347
348	if(keyfile)
349		{
350		if (want_pub)
351			sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
352				e, "key file");
353		else
354			sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
355				e, "key file");
356		if (!sigkey)
357			{
358			/* load_[pub]key() has already printed an appropriate
359			   message */
360			goto end;
361			}
362		}
363
364	if(sigfile && sigkey) {
365		BIO *sigbio;
366		sigbio = BIO_new_file(sigfile, "rb");
367		siglen = EVP_PKEY_size(sigkey);
368		sigbuf = OPENSSL_malloc(siglen);
369		if(!sigbio) {
370			BIO_printf(bio_err, "Error opening signature file %s\n",
371								sigfile);
372			ERR_print_errors(bio_err);
373			goto end;
374		}
375		siglen = BIO_read(sigbio, sigbuf, siglen);
376		BIO_free(sigbio);
377		if(siglen <= 0) {
378			BIO_printf(bio_err, "Error reading signature file %s\n",
379								sigfile);
380			ERR_print_errors(bio_err);
381			goto end;
382		}
383	}
384
385	if (non_fips_allow)
386		{
387		EVP_MD_CTX *md_ctx;
388		BIO_get_md_ctx(bmd,&md_ctx);
389		EVP_MD_CTX_set_flags(md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
390		}
391
392	if (sig_flags)
393		{
394		EVP_MD_CTX *md_ctx;
395		BIO_get_md_ctx(bmd,&md_ctx);
396		EVP_MD_CTX_set_flags(md_ctx, sig_flags);
397		}
398
399	/* we use md as a filter, reading from 'in' */
400	if (!BIO_set_md(bmd,md))
401		{
402		BIO_printf(bio_err, "Error setting digest %s\n", pname);
403		ERR_print_errors(bio_err);
404		goto end;
405		}
406
407	inp=BIO_push(bmd,in);
408
409	if (argc == 0)
410		{
411		BIO_set_fp(in,stdin,BIO_NOCLOSE);
412		err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf,
413			  siglen,"","(stdin)",bmd,hmac_key,non_fips_allow);
414		}
415	else
416		{
417		name=OBJ_nid2sn(md->type);
418		err = 0;
419		for (i=0; i<argc; i++)
420			{
421			char *tmp,*tofree=NULL;
422			int r;
423
424			if (BIO_read_filename(in,argv[i]) <= 0)
425				{
426				perror(argv[i]);
427				err++;
428				continue;
429				}
430			if(!out_bin)
431				{
432				size_t len = strlen(name)+strlen(argv[i])+(hmac_key ? 5 : 0)+5;
433				tmp=tofree=OPENSSL_malloc(len);
434				BIO_snprintf(tmp,len,"%s%s(%s)= ",
435							 hmac_key ? "HMAC-" : "",name,argv[i]);
436				}
437			else
438				tmp="";
439			r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf,
440				siglen,tmp,argv[i],bmd,hmac_key,non_fips_allow);
441			if(r)
442			    err=r;
443			if(tofree)
444				OPENSSL_free(tofree);
445			(void)BIO_reset(bmd);
446			}
447		}
448end:
449	if (buf != NULL)
450		{
451		OPENSSL_cleanse(buf,BUFSIZE);
452		OPENSSL_free(buf);
453		}
454	if (in != NULL) BIO_free(in);
455	if (passin)
456		OPENSSL_free(passin);
457	BIO_free_all(out);
458	EVP_PKEY_free(sigkey);
459	if(sigbuf) OPENSSL_free(sigbuf);
460	if (bmd != NULL) BIO_free(bmd);
461	apps_shutdown();
462	OPENSSL_EXIT(err);
463	}
464
465int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
466	  EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title,
467	  const char *file,BIO *bmd,const char *hmac_key,int non_fips_allow)
468	{
469	unsigned int len;
470	int i;
471	EVP_MD_CTX *md_ctx;
472	HMAC_CTX hmac_ctx;
473
474	if (hmac_key)
475		{
476		EVP_MD *md;
477
478		BIO_get_md(bmd,&md);
479		HMAC_CTX_init(&hmac_ctx);
480		HMAC_Init_ex(&hmac_ctx,hmac_key,strlen(hmac_key),md, NULL);
481		BIO_get_md_ctx(bmd,&md_ctx);
482		BIO_set_md_ctx(bmd,&hmac_ctx.md_ctx);
483		}
484	for (;;)
485		{
486		i=BIO_read(bp,(char *)buf,BUFSIZE);
487		if(i < 0)
488			{
489			BIO_printf(bio_err, "Read Error in %s\n",file);
490			ERR_print_errors(bio_err);
491			return 1;
492			}
493		if (i == 0) break;
494		}
495	if(sigin)
496		{
497		EVP_MD_CTX *ctx;
498		BIO_get_md_ctx(bp, &ctx);
499		i = EVP_VerifyFinal(ctx, sigin, (unsigned int)siglen, key);
500		if(i > 0)
501			BIO_printf(out, "Verified OK\n");
502		else if(i == 0)
503			{
504			BIO_printf(out, "Verification Failure\n");
505			return 1;
506			}
507		else
508			{
509			BIO_printf(bio_err, "Error Verifying Data\n");
510			ERR_print_errors(bio_err);
511			return 1;
512			}
513		return 0;
514		}
515	if(key)
516		{
517		EVP_MD_CTX *ctx;
518		BIO_get_md_ctx(bp, &ctx);
519		if(!EVP_SignFinal(ctx, buf, (unsigned int *)&len, key))
520			{
521			BIO_printf(bio_err, "Error Signing Data\n");
522			ERR_print_errors(bio_err);
523			return 1;
524			}
525		}
526	else if(hmac_key)
527		{
528		HMAC_Final(&hmac_ctx,buf,&len);
529		HMAC_CTX_cleanup(&hmac_ctx);
530		}
531	else
532		len=BIO_gets(bp,(char *)buf,BUFSIZE);
533
534	if(binout) BIO_write(out, buf, len);
535	else
536		{
537		BIO_write(out,title,strlen(title));
538		for (i=0; i<(int)len; i++)
539			{
540			if (sep && (i != 0))
541				BIO_printf(out, ":");
542			BIO_printf(out, "%02x",buf[i]);
543			}
544		BIO_printf(out, "\n");
545		}
546	if (hmac_key)
547		{
548		BIO_set_md_ctx(bmd,md_ctx);
549		}
550	return 0;
551	}
552
553