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1.8 ! semarie 1: /* $OpenBSD: dgst.c,v 1.7 2015/10/10 22:28:51 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) {
1.8 ! semarie 127: if (pledge("stdio rpath wpath cpath tty", NULL) == -1)
1.7 doug 128: perror("pledge");
129: }
1.1 jsing 130:
131: if ((buf = malloc(BUFSIZE)) == NULL) {
132: BIO_printf(bio_err, "out of memory\n");
133: goto end;
134: }
135:
136: /* first check the program name */
137: program_name(argv[0], pname, sizeof pname);
138:
139: md = EVP_get_digestbyname(pname);
140:
141: argc--;
142: argv++;
143: while (argc > 0) {
144: if ((*argv)[0] != '-')
145: break;
146: if (strcmp(*argv, "-c") == 0)
147: separator = 1;
148: else if (strcmp(*argv, "-r") == 0)
149: separator = 2;
150: else if (strcmp(*argv, "-out") == 0) {
151: if (--argc < 1)
152: break;
153: outfile = *(++argv);
154: } else if (strcmp(*argv, "-sign") == 0) {
155: if (--argc < 1)
156: break;
157: keyfile = *(++argv);
158: } else if (!strcmp(*argv, "-passin")) {
159: if (--argc < 1)
160: break;
161: passargin = *++argv;
162: } else if (strcmp(*argv, "-verify") == 0) {
163: if (--argc < 1)
164: break;
165: keyfile = *(++argv);
166: want_pub = 1;
167: do_verify = 1;
168: } else if (strcmp(*argv, "-prverify") == 0) {
169: if (--argc < 1)
170: break;
171: keyfile = *(++argv);
172: do_verify = 1;
173: } else if (strcmp(*argv, "-signature") == 0) {
174: if (--argc < 1)
175: break;
176: sigfile = *(++argv);
177: } else if (strcmp(*argv, "-keyform") == 0) {
178: if (--argc < 1)
179: break;
180: keyform = str2fmt(*(++argv));
181: }
182: else if (strcmp(*argv, "-hex") == 0)
183: out_bin = 0;
184: else if (strcmp(*argv, "-binary") == 0)
185: out_bin = 1;
186: else if (strcmp(*argv, "-d") == 0)
187: debug = 1;
188: else if (!strcmp(*argv, "-hmac")) {
189: if (--argc < 1)
190: break;
191: hmac_key = *++argv;
192: } else if (!strcmp(*argv, "-mac")) {
193: if (--argc < 1)
194: break;
195: mac_name = *++argv;
196: } else if (strcmp(*argv, "-sigopt") == 0) {
197: if (--argc < 1)
198: break;
199: if (!sigopts)
200: sigopts = sk_OPENSSL_STRING_new_null();
201: if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv)))
202: break;
203: } else if (strcmp(*argv, "-macopt") == 0) {
204: if (--argc < 1)
205: break;
206: if (!macopts)
207: macopts = sk_OPENSSL_STRING_new_null();
208: if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv)))
209: break;
210: } else if ((m = EVP_get_digestbyname(&((*argv)[1]))) != NULL)
211: md = m;
212: else
213: break;
214: argc--;
215: argv++;
216: }
217:
218:
219: if (do_verify && !sigfile) {
220: BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
221: goto end;
222: }
223: if ((argc > 0) && (argv[0][0] == '-')) { /* bad option */
224: BIO_printf(bio_err, "unknown option '%s'\n", *argv);
225: BIO_printf(bio_err, "options are\n");
226: BIO_printf(bio_err, "-c to output the digest with separating colons\n");
227: BIO_printf(bio_err, "-r to output the digest in coreutils format\n");
228: BIO_printf(bio_err, "-d to output debug info\n");
229: BIO_printf(bio_err, "-hex output as hex dump\n");
230: BIO_printf(bio_err, "-binary output in binary form\n");
231: BIO_printf(bio_err, "-sign file sign digest using private key in file\n");
232: BIO_printf(bio_err, "-verify file verify a signature using public key in file\n");
233: BIO_printf(bio_err, "-prverify file verify a signature using private key in file\n");
1.6 bcook 234: BIO_printf(bio_err, "-keyform arg key file format (PEM)\n");
1.1 jsing 235: BIO_printf(bio_err, "-out filename output to filename rather than stdout\n");
236: BIO_printf(bio_err, "-signature file signature to verify\n");
237: BIO_printf(bio_err, "-sigopt nm:v signature parameter\n");
238: BIO_printf(bio_err, "-hmac key create hashed MAC with key\n");
239: BIO_printf(bio_err, "-mac algorithm create MAC (not neccessarily HMAC)\n");
240: BIO_printf(bio_err, "-macopt nm:v MAC algorithm parameters or key\n");
241:
242: EVP_MD_do_all_sorted(list_md_fn, bio_err);
243: goto end;
244: }
1.2 doug 245:
1.1 jsing 246: in = BIO_new(BIO_s_file());
247: bmd = BIO_new(BIO_f_md());
1.2 doug 248: if (in == NULL || bmd == NULL) {
249: ERR_print_errors(bio_err);
250: goto end;
251: }
252:
1.1 jsing 253: if (debug) {
254: BIO_set_callback(in, BIO_debug_callback);
255: /* needed for windows 3.1 */
256: BIO_set_callback_arg(in, (char *) bio_err);
257: }
258: if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
259: BIO_printf(bio_err, "Error getting password\n");
260: goto end;
261: }
262: if (out_bin == -1) {
263: if (keyfile)
264: out_bin = 1;
265: else
266: out_bin = 0;
267: }
268:
269: if (outfile) {
270: if (out_bin)
271: out = BIO_new_file(outfile, "wb");
272: else
273: out = BIO_new_file(outfile, "w");
274: } else {
275: out = BIO_new_fp(stdout, BIO_NOCLOSE);
276: }
277:
278: if (!out) {
279: BIO_printf(bio_err, "Error opening output file %s\n",
280: outfile ? outfile : "(stdout)");
281: ERR_print_errors(bio_err);
282: goto end;
283: }
284: if ((!!mac_name + !!keyfile + !!hmac_key) > 1) {
285: BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
286: goto end;
287: }
288: if (keyfile) {
289: if (want_pub)
290: sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
1.6 bcook 291: "key file");
1.1 jsing 292: else
293: sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
1.6 bcook 294: "key file");
1.1 jsing 295: if (!sigkey) {
296: /*
297: * load_[pub]key() has already printed an appropriate
298: * message
299: */
300: goto end;
301: }
302: }
303: if (mac_name) {
304: EVP_PKEY_CTX *mac_ctx = NULL;
305: int r = 0;
1.6 bcook 306: if (!init_gen_str(bio_err, &mac_ctx, mac_name, 0))
1.1 jsing 307: goto mac_end;
308: if (macopts) {
309: char *macopt;
310: for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
311: macopt = sk_OPENSSL_STRING_value(macopts, i);
312: if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
313: BIO_printf(bio_err,
314: "MAC parameter error \"%s\"\n",
315: macopt);
316: ERR_print_errors(bio_err);
317: goto mac_end;
318: }
319: }
320: }
321: if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
322: BIO_puts(bio_err, "Error generating key\n");
323: ERR_print_errors(bio_err);
324: goto mac_end;
325: }
326: r = 1;
327: mac_end:
328: if (mac_ctx)
329: EVP_PKEY_CTX_free(mac_ctx);
330: if (r == 0)
331: goto end;
332: }
333: if (hmac_key) {
1.6 bcook 334: sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL,
1.1 jsing 335: (unsigned char *) hmac_key, -1);
336: if (!sigkey)
337: goto end;
338: }
339: if (sigkey) {
340: EVP_MD_CTX *mctx = NULL;
341: EVP_PKEY_CTX *pctx = NULL;
342: int r;
343: if (!BIO_get_md_ctx(bmd, &mctx)) {
344: BIO_printf(bio_err, "Error getting context\n");
345: ERR_print_errors(bio_err);
346: goto end;
347: }
348: if (do_verify)
349: r = EVP_DigestVerifyInit(mctx, &pctx, md, NULL, sigkey);
350: else
351: r = EVP_DigestSignInit(mctx, &pctx, md, NULL, sigkey);
352: if (!r) {
353: BIO_printf(bio_err, "Error setting context\n");
354: ERR_print_errors(bio_err);
355: goto end;
356: }
357: if (sigopts) {
358: char *sigopt;
359: for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
360: sigopt = sk_OPENSSL_STRING_value(sigopts, i);
361: if (pkey_ctrl_string(pctx, sigopt) <= 0) {
362: BIO_printf(bio_err,
363: "parameter error \"%s\"\n",
364: sigopt);
365: ERR_print_errors(bio_err);
366: goto end;
367: }
368: }
369: }
370: }
371: /* we use md as a filter, reading from 'in' */
372: else {
373: if (md == NULL)
374: md = EVP_md5();
375: if (!BIO_set_md(bmd, md)) {
376: BIO_printf(bio_err, "Error setting digest %s\n", pname);
377: ERR_print_errors(bio_err);
378: goto end;
379: }
380: }
381:
382: if (sigfile && sigkey) {
383: BIO *sigbio;
384: siglen = EVP_PKEY_size(sigkey);
385: sigbuf = malloc(siglen);
1.3 rpointel 386: if (sigbuf == NULL) {
387: BIO_printf(bio_err, "out of memory\n");
388: ERR_print_errors(bio_err);
389: goto end;
390: }
391: sigbio = BIO_new_file(sigfile, "rb");
1.1 jsing 392: if (!sigbio) {
393: BIO_printf(bio_err, "Error opening signature file %s\n",
394: sigfile);
395: ERR_print_errors(bio_err);
396: goto end;
397: }
398: siglen = BIO_read(sigbio, sigbuf, siglen);
399: BIO_free(sigbio);
400: if (siglen <= 0) {
401: BIO_printf(bio_err, "Error reading signature file %s\n",
402: sigfile);
403: ERR_print_errors(bio_err);
404: goto end;
405: }
406: }
407: inp = BIO_push(bmd, in);
408:
409: if (md == NULL) {
410: EVP_MD_CTX *tctx;
411: BIO_get_md_ctx(bmd, &tctx);
412: md = EVP_MD_CTX_md(tctx);
413: }
414: if (argc == 0) {
415: BIO_set_fp(in, stdin, BIO_NOCLOSE);
416: err = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
417: siglen, NULL, NULL, "stdin", bmd);
418: } else {
419: const char *md_name = NULL, *sig_name = NULL;
420: if (!out_bin) {
421: if (sigkey) {
422: const EVP_PKEY_ASN1_METHOD *ameth;
423: ameth = EVP_PKEY_get0_asn1(sigkey);
424: if (ameth)
425: EVP_PKEY_asn1_get0_info(NULL, NULL,
426: NULL, NULL, &sig_name, ameth);
427: }
428: md_name = EVP_MD_name(md);
429: }
430: err = 0;
431: for (i = 0; i < argc; i++) {
432: int r;
433: if (BIO_read_filename(in, argv[i]) <= 0) {
434: perror(argv[i]);
435: err++;
436: continue;
437: } else {
438: r = do_fp(out, buf, inp, separator, out_bin,
439: sigkey, sigbuf, siglen, sig_name, md_name,
440: argv[i], bmd);
441: }
442: if (r)
443: err = r;
444: (void) BIO_reset(bmd);
445: }
446: }
447:
448: end:
449: if (buf != NULL) {
1.5 jsing 450: explicit_bzero(buf, BUFSIZE);
1.1 jsing 451: free(buf);
452: }
453: if (in != NULL)
454: BIO_free(in);
455: free(passin);
456: BIO_free_all(out);
457: EVP_PKEY_free(sigkey);
458: if (sigopts)
459: sk_OPENSSL_STRING_free(sigopts);
460: if (macopts)
461: sk_OPENSSL_STRING_free(macopts);
462: free(sigbuf);
463: if (bmd != NULL)
464: BIO_free(bmd);
465:
466: return (err);
467: }
468:
469: int
470: do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
471: EVP_PKEY * key, unsigned char *sigin, int siglen,
472: const char *sig_name, const char *md_name,
473: const char *file, BIO * bmd)
474: {
475: size_t len;
476: int i;
477:
478: for (;;) {
479: i = BIO_read(bp, (char *) buf, BUFSIZE);
480: if (i < 0) {
481: BIO_printf(bio_err, "Read Error in %s\n", file);
482: ERR_print_errors(bio_err);
483: return 1;
484: }
485: if (i == 0)
486: break;
487: }
488: if (sigin) {
489: EVP_MD_CTX *ctx;
490: BIO_get_md_ctx(bp, &ctx);
491: i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int) siglen);
492: if (i > 0)
493: BIO_printf(out, "Verified OK\n");
494: else if (i == 0) {
495: BIO_printf(out, "Verification Failure\n");
496: return 1;
497: } else {
498: BIO_printf(bio_err, "Error Verifying Data\n");
499: ERR_print_errors(bio_err);
500: return 1;
501: }
502: return 0;
503: }
504: if (key) {
505: EVP_MD_CTX *ctx;
506: BIO_get_md_ctx(bp, &ctx);
507: len = BUFSIZE;
508: if (!EVP_DigestSignFinal(ctx, buf, &len)) {
509: BIO_printf(bio_err, "Error Signing Data\n");
510: ERR_print_errors(bio_err);
511: return 1;
512: }
513: } else {
514: len = BIO_gets(bp, (char *) buf, BUFSIZE);
515: if ((int) len < 0) {
516: ERR_print_errors(bio_err);
517: return 1;
518: }
519: }
520:
521: if (binout)
522: BIO_write(out, buf, len);
523: else if (sep == 2) {
524: for (i = 0; i < (int) len; i++)
525: BIO_printf(out, "%02x", buf[i]);
526: BIO_printf(out, " *%s\n", file);
527: } else {
528: if (sig_name)
529: BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
530: else if (md_name)
531: BIO_printf(out, "%s(%s)= ", md_name, file);
532: else
533: BIO_printf(out, "(%s)= ", file);
534: for (i = 0; i < (int) len; i++) {
535: if (sep && (i != 0))
536: BIO_printf(out, ":");
537: BIO_printf(out, "%02x", buf[i]);
538: }
539: BIO_printf(out, "\n");
540: }
541: return 0;
542: }