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1.10 ! deraadt 1: /* $OpenBSD: dgst.c,v 1.9 2015/10/17 15:00:11 doug Exp $ */
1.1 jsing 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 <stdlib.h>
61: #include <string.h>
62:
63: #include "apps.h"
64:
65: #include <openssl/bio.h>
66: #include <openssl/err.h>
67: #include <openssl/evp.h>
68: #include <openssl/hmac.h>
69: #include <openssl/objects.h>
70: #include <openssl/pem.h>
71: #include <openssl/x509.h>
72:
73: #define BUFSIZE 1024*8
74:
75: int
76: do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
77: EVP_PKEY * key, unsigned char *sigin, int siglen,
78: const char *sig_name, const char *md_name,
79: const char *file, BIO * bmd);
80:
81: static void
82: list_md_fn(const EVP_MD * m, const char *from, const char *to, void *arg)
83: {
84: const char *mname;
85: /* Skip aliases */
86: if (!m)
87: return;
88: mname = OBJ_nid2ln(EVP_MD_type(m));
89: /* Skip shortnames */
90: if (strcmp(from, mname))
91: return;
92: /* Skip clones */
93: if (EVP_MD_flags(m) & EVP_MD_FLAG_PKEY_DIGEST)
94: return;
95: if (strchr(mname, ' '))
96: mname = EVP_MD_name(m);
97: BIO_printf(arg, "-%-14s to use the %s message digest algorithm\n",
98: mname, mname);
99: }
100:
101: int
102: dgst_main(int argc, char **argv)
103: {
104: unsigned char *buf = NULL;
105: int i, err = 1;
106: const EVP_MD *md = NULL, *m;
107: BIO *in = NULL, *inp;
108: BIO *bmd = NULL;
109: BIO *out = NULL;
110: #define PROG_NAME_SIZE 39
111: char pname[PROG_NAME_SIZE + 1];
112: int separator = 0;
113: int debug = 0;
114: int keyform = FORMAT_PEM;
115: const char *outfile = NULL, *keyfile = NULL;
116: const char *sigfile = NULL;
117: int out_bin = -1, want_pub = 0, do_verify = 0;
118: EVP_PKEY *sigkey = NULL;
119: unsigned char *sigbuf = NULL;
120: int siglen = 0;
121: char *passargin = NULL, *passin = NULL;
122: char *hmac_key = NULL;
123: char *mac_name = NULL;
124: STACK_OF(OPENSSL_STRING) * sigopts = NULL, *macopts = NULL;
1.7 doug 125:
126: if (single_execution) {
1.10 ! deraadt 127: if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
1.7 doug 128: perror("pledge");
1.9 doug 129: exit(1);
130: }
1.7 doug 131: }
1.1 jsing 132:
133: if ((buf = malloc(BUFSIZE)) == NULL) {
134: BIO_printf(bio_err, "out of memory\n");
135: goto end;
136: }
137:
138: /* first check the program name */
139: program_name(argv[0], pname, sizeof pname);
140:
141: md = EVP_get_digestbyname(pname);
142:
143: argc--;
144: argv++;
145: while (argc > 0) {
146: if ((*argv)[0] != '-')
147: break;
148: if (strcmp(*argv, "-c") == 0)
149: separator = 1;
150: else if (strcmp(*argv, "-r") == 0)
151: separator = 2;
152: else if (strcmp(*argv, "-out") == 0) {
153: if (--argc < 1)
154: break;
155: outfile = *(++argv);
156: } else if (strcmp(*argv, "-sign") == 0) {
157: if (--argc < 1)
158: break;
159: keyfile = *(++argv);
160: } else if (!strcmp(*argv, "-passin")) {
161: if (--argc < 1)
162: break;
163: passargin = *++argv;
164: } else if (strcmp(*argv, "-verify") == 0) {
165: if (--argc < 1)
166: break;
167: keyfile = *(++argv);
168: want_pub = 1;
169: do_verify = 1;
170: } else if (strcmp(*argv, "-prverify") == 0) {
171: if (--argc < 1)
172: break;
173: keyfile = *(++argv);
174: do_verify = 1;
175: } else if (strcmp(*argv, "-signature") == 0) {
176: if (--argc < 1)
177: break;
178: sigfile = *(++argv);
179: } else if (strcmp(*argv, "-keyform") == 0) {
180: if (--argc < 1)
181: break;
182: keyform = str2fmt(*(++argv));
183: }
184: else if (strcmp(*argv, "-hex") == 0)
185: out_bin = 0;
186: else if (strcmp(*argv, "-binary") == 0)
187: out_bin = 1;
188: else if (strcmp(*argv, "-d") == 0)
189: debug = 1;
190: else if (!strcmp(*argv, "-hmac")) {
191: if (--argc < 1)
192: break;
193: hmac_key = *++argv;
194: } else if (!strcmp(*argv, "-mac")) {
195: if (--argc < 1)
196: break;
197: mac_name = *++argv;
198: } else if (strcmp(*argv, "-sigopt") == 0) {
199: if (--argc < 1)
200: break;
201: if (!sigopts)
202: sigopts = sk_OPENSSL_STRING_new_null();
203: if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv)))
204: break;
205: } else if (strcmp(*argv, "-macopt") == 0) {
206: if (--argc < 1)
207: break;
208: if (!macopts)
209: macopts = sk_OPENSSL_STRING_new_null();
210: if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv)))
211: break;
212: } else if ((m = EVP_get_digestbyname(&((*argv)[1]))) != NULL)
213: md = m;
214: else
215: break;
216: argc--;
217: argv++;
218: }
219:
220:
221: if (do_verify && !sigfile) {
222: BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
223: goto end;
224: }
225: if ((argc > 0) && (argv[0][0] == '-')) { /* bad option */
226: BIO_printf(bio_err, "unknown option '%s'\n", *argv);
227: BIO_printf(bio_err, "options are\n");
228: BIO_printf(bio_err, "-c to output the digest with separating colons\n");
229: BIO_printf(bio_err, "-r to output the digest in coreutils format\n");
230: BIO_printf(bio_err, "-d to output debug info\n");
231: BIO_printf(bio_err, "-hex output as hex dump\n");
232: BIO_printf(bio_err, "-binary output in binary form\n");
233: BIO_printf(bio_err, "-sign file sign digest using private key in file\n");
234: BIO_printf(bio_err, "-verify file verify a signature using public key in file\n");
235: BIO_printf(bio_err, "-prverify file verify a signature using private key in file\n");
1.6 bcook 236: BIO_printf(bio_err, "-keyform arg key file format (PEM)\n");
1.1 jsing 237: BIO_printf(bio_err, "-out filename output to filename rather than stdout\n");
238: BIO_printf(bio_err, "-signature file signature to verify\n");
239: BIO_printf(bio_err, "-sigopt nm:v signature parameter\n");
240: BIO_printf(bio_err, "-hmac key create hashed MAC with key\n");
241: BIO_printf(bio_err, "-mac algorithm create MAC (not neccessarily HMAC)\n");
242: BIO_printf(bio_err, "-macopt nm:v MAC algorithm parameters or key\n");
243:
244: EVP_MD_do_all_sorted(list_md_fn, bio_err);
245: goto end;
246: }
1.2 doug 247:
1.1 jsing 248: in = BIO_new(BIO_s_file());
249: bmd = BIO_new(BIO_f_md());
1.2 doug 250: if (in == NULL || bmd == NULL) {
251: ERR_print_errors(bio_err);
252: goto end;
253: }
254:
1.1 jsing 255: if (debug) {
256: BIO_set_callback(in, BIO_debug_callback);
257: /* needed for windows 3.1 */
258: BIO_set_callback_arg(in, (char *) bio_err);
259: }
260: if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
261: BIO_printf(bio_err, "Error getting password\n");
262: goto end;
263: }
264: if (out_bin == -1) {
265: if (keyfile)
266: out_bin = 1;
267: else
268: out_bin = 0;
269: }
270:
271: if (outfile) {
272: if (out_bin)
273: out = BIO_new_file(outfile, "wb");
274: else
275: out = BIO_new_file(outfile, "w");
276: } else {
277: out = BIO_new_fp(stdout, BIO_NOCLOSE);
278: }
279:
280: if (!out) {
281: BIO_printf(bio_err, "Error opening output file %s\n",
282: outfile ? outfile : "(stdout)");
283: ERR_print_errors(bio_err);
284: goto end;
285: }
286: if ((!!mac_name + !!keyfile + !!hmac_key) > 1) {
287: BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
288: goto end;
289: }
290: if (keyfile) {
291: if (want_pub)
292: sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
1.6 bcook 293: "key file");
1.1 jsing 294: else
295: sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
1.6 bcook 296: "key file");
1.1 jsing 297: if (!sigkey) {
298: /*
299: * load_[pub]key() has already printed an appropriate
300: * message
301: */
302: goto end;
303: }
304: }
305: if (mac_name) {
306: EVP_PKEY_CTX *mac_ctx = NULL;
307: int r = 0;
1.6 bcook 308: if (!init_gen_str(bio_err, &mac_ctx, mac_name, 0))
1.1 jsing 309: goto mac_end;
310: if (macopts) {
311: char *macopt;
312: for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
313: macopt = sk_OPENSSL_STRING_value(macopts, i);
314: if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
315: BIO_printf(bio_err,
316: "MAC parameter error \"%s\"\n",
317: macopt);
318: ERR_print_errors(bio_err);
319: goto mac_end;
320: }
321: }
322: }
323: if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
324: BIO_puts(bio_err, "Error generating key\n");
325: ERR_print_errors(bio_err);
326: goto mac_end;
327: }
328: r = 1;
329: mac_end:
330: if (mac_ctx)
331: EVP_PKEY_CTX_free(mac_ctx);
332: if (r == 0)
333: goto end;
334: }
335: if (hmac_key) {
1.6 bcook 336: sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL,
1.1 jsing 337: (unsigned char *) hmac_key, -1);
338: if (!sigkey)
339: goto end;
340: }
341: if (sigkey) {
342: EVP_MD_CTX *mctx = NULL;
343: EVP_PKEY_CTX *pctx = NULL;
344: int r;
345: if (!BIO_get_md_ctx(bmd, &mctx)) {
346: BIO_printf(bio_err, "Error getting context\n");
347: ERR_print_errors(bio_err);
348: goto end;
349: }
350: if (do_verify)
351: r = EVP_DigestVerifyInit(mctx, &pctx, md, NULL, sigkey);
352: else
353: r = EVP_DigestSignInit(mctx, &pctx, md, NULL, sigkey);
354: if (!r) {
355: BIO_printf(bio_err, "Error setting context\n");
356: ERR_print_errors(bio_err);
357: goto end;
358: }
359: if (sigopts) {
360: char *sigopt;
361: for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
362: sigopt = sk_OPENSSL_STRING_value(sigopts, i);
363: if (pkey_ctrl_string(pctx, sigopt) <= 0) {
364: BIO_printf(bio_err,
365: "parameter error \"%s\"\n",
366: sigopt);
367: ERR_print_errors(bio_err);
368: goto end;
369: }
370: }
371: }
372: }
373: /* we use md as a filter, reading from 'in' */
374: else {
375: if (md == NULL)
376: md = EVP_md5();
377: if (!BIO_set_md(bmd, md)) {
378: BIO_printf(bio_err, "Error setting digest %s\n", pname);
379: ERR_print_errors(bio_err);
380: goto end;
381: }
382: }
383:
384: if (sigfile && sigkey) {
385: BIO *sigbio;
386: siglen = EVP_PKEY_size(sigkey);
387: sigbuf = malloc(siglen);
1.3 rpointel 388: if (sigbuf == NULL) {
389: BIO_printf(bio_err, "out of memory\n");
390: ERR_print_errors(bio_err);
391: goto end;
392: }
393: sigbio = BIO_new_file(sigfile, "rb");
1.1 jsing 394: if (!sigbio) {
395: BIO_printf(bio_err, "Error opening signature file %s\n",
396: sigfile);
397: ERR_print_errors(bio_err);
398: goto end;
399: }
400: siglen = BIO_read(sigbio, sigbuf, siglen);
401: BIO_free(sigbio);
402: if (siglen <= 0) {
403: BIO_printf(bio_err, "Error reading signature file %s\n",
404: sigfile);
405: ERR_print_errors(bio_err);
406: goto end;
407: }
408: }
409: inp = BIO_push(bmd, in);
410:
411: if (md == NULL) {
412: EVP_MD_CTX *tctx;
413: BIO_get_md_ctx(bmd, &tctx);
414: md = EVP_MD_CTX_md(tctx);
415: }
416: if (argc == 0) {
417: BIO_set_fp(in, stdin, BIO_NOCLOSE);
418: err = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
419: siglen, NULL, NULL, "stdin", bmd);
420: } else {
421: const char *md_name = NULL, *sig_name = NULL;
422: if (!out_bin) {
423: if (sigkey) {
424: const EVP_PKEY_ASN1_METHOD *ameth;
425: ameth = EVP_PKEY_get0_asn1(sigkey);
426: if (ameth)
427: EVP_PKEY_asn1_get0_info(NULL, NULL,
428: NULL, NULL, &sig_name, ameth);
429: }
430: md_name = EVP_MD_name(md);
431: }
432: err = 0;
433: for (i = 0; i < argc; i++) {
434: int r;
435: if (BIO_read_filename(in, argv[i]) <= 0) {
436: perror(argv[i]);
437: err++;
438: continue;
439: } else {
440: r = do_fp(out, buf, inp, separator, out_bin,
441: sigkey, sigbuf, siglen, sig_name, md_name,
442: argv[i], bmd);
443: }
444: if (r)
445: err = r;
446: (void) BIO_reset(bmd);
447: }
448: }
449:
450: end:
451: if (buf != NULL) {
1.5 jsing 452: explicit_bzero(buf, BUFSIZE);
1.1 jsing 453: free(buf);
454: }
455: if (in != NULL)
456: BIO_free(in);
457: free(passin);
458: BIO_free_all(out);
459: EVP_PKEY_free(sigkey);
460: if (sigopts)
461: sk_OPENSSL_STRING_free(sigopts);
462: if (macopts)
463: sk_OPENSSL_STRING_free(macopts);
464: free(sigbuf);
465: if (bmd != NULL)
466: BIO_free(bmd);
467:
468: return (err);
469: }
470:
471: int
472: do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
473: EVP_PKEY * key, unsigned char *sigin, int siglen,
474: const char *sig_name, const char *md_name,
475: const char *file, BIO * bmd)
476: {
477: size_t len;
478: int i;
479:
480: for (;;) {
481: i = BIO_read(bp, (char *) buf, BUFSIZE);
482: if (i < 0) {
483: BIO_printf(bio_err, "Read Error in %s\n", file);
484: ERR_print_errors(bio_err);
485: return 1;
486: }
487: if (i == 0)
488: break;
489: }
490: if (sigin) {
491: EVP_MD_CTX *ctx;
492: BIO_get_md_ctx(bp, &ctx);
493: i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int) siglen);
494: if (i > 0)
495: BIO_printf(out, "Verified OK\n");
496: else if (i == 0) {
497: BIO_printf(out, "Verification Failure\n");
498: return 1;
499: } else {
500: BIO_printf(bio_err, "Error Verifying Data\n");
501: ERR_print_errors(bio_err);
502: return 1;
503: }
504: return 0;
505: }
506: if (key) {
507: EVP_MD_CTX *ctx;
508: BIO_get_md_ctx(bp, &ctx);
509: len = BUFSIZE;
510: if (!EVP_DigestSignFinal(ctx, buf, &len)) {
511: BIO_printf(bio_err, "Error Signing Data\n");
512: ERR_print_errors(bio_err);
513: return 1;
514: }
515: } else {
516: len = BIO_gets(bp, (char *) buf, BUFSIZE);
517: if ((int) len < 0) {
518: ERR_print_errors(bio_err);
519: return 1;
520: }
521: }
522:
523: if (binout)
524: BIO_write(out, buf, len);
525: else if (sep == 2) {
526: for (i = 0; i < (int) len; i++)
527: BIO_printf(out, "%02x", buf[i]);
528: BIO_printf(out, " *%s\n", file);
529: } else {
530: if (sig_name)
531: BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
532: else if (md_name)
533: BIO_printf(out, "%s(%s)= ", md_name, file);
534: else
535: BIO_printf(out, "(%s)= ", file);
536: for (i = 0; i < (int) len; i++) {
537: if (sep && (i != 0))
538: BIO_printf(out, ":");
539: BIO_printf(out, "%02x", buf[i]);
540: }
541: BIO_printf(out, "\n");
542: }
543: return 0;
544: }