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1.5 ! jsing 1: /* $OpenBSD: dgst.c,v 1.4 2015/08/22 16:36:05 jsing 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: ENGINE *e = NULL;
105: unsigned char *buf = NULL;
106: int i, err = 1;
107: const EVP_MD *md = NULL, *m;
108: BIO *in = NULL, *inp;
109: BIO *bmd = NULL;
110: BIO *out = NULL;
111: #define PROG_NAME_SIZE 39
112: char pname[PROG_NAME_SIZE + 1];
113: int separator = 0;
114: int debug = 0;
115: int keyform = FORMAT_PEM;
116: const char *outfile = NULL, *keyfile = NULL;
117: const char *sigfile = NULL;
118: int out_bin = -1, want_pub = 0, do_verify = 0;
119: EVP_PKEY *sigkey = NULL;
120: unsigned char *sigbuf = NULL;
121: int siglen = 0;
122: char *passargin = NULL, *passin = NULL;
123: #ifndef OPENSSL_NO_ENGINE
124: char *engine = NULL;
125: #endif
126: char *hmac_key = NULL;
127: char *mac_name = NULL;
128: STACK_OF(OPENSSL_STRING) * sigopts = NULL, *macopts = NULL;
129:
130: if ((buf = malloc(BUFSIZE)) == NULL) {
131: BIO_printf(bio_err, "out of memory\n");
132: goto end;
133: }
134:
135: /* first check the program name */
136: program_name(argv[0], pname, sizeof pname);
137:
138: md = EVP_get_digestbyname(pname);
139:
140: argc--;
141: argv++;
142: while (argc > 0) {
143: if ((*argv)[0] != '-')
144: break;
145: if (strcmp(*argv, "-c") == 0)
146: separator = 1;
147: else if (strcmp(*argv, "-r") == 0)
148: separator = 2;
149: else if (strcmp(*argv, "-out") == 0) {
150: if (--argc < 1)
151: break;
152: outfile = *(++argv);
153: } else if (strcmp(*argv, "-sign") == 0) {
154: if (--argc < 1)
155: break;
156: keyfile = *(++argv);
157: } else if (!strcmp(*argv, "-passin")) {
158: if (--argc < 1)
159: break;
160: passargin = *++argv;
161: } else if (strcmp(*argv, "-verify") == 0) {
162: if (--argc < 1)
163: break;
164: keyfile = *(++argv);
165: want_pub = 1;
166: do_verify = 1;
167: } else if (strcmp(*argv, "-prverify") == 0) {
168: if (--argc < 1)
169: break;
170: keyfile = *(++argv);
171: do_verify = 1;
172: } else if (strcmp(*argv, "-signature") == 0) {
173: if (--argc < 1)
174: break;
175: sigfile = *(++argv);
176: } else if (strcmp(*argv, "-keyform") == 0) {
177: if (--argc < 1)
178: break;
179: keyform = str2fmt(*(++argv));
180: }
181: #ifndef OPENSSL_NO_ENGINE
182: else if (strcmp(*argv, "-engine") == 0) {
183: if (--argc < 1)
184: break;
185: engine = *(++argv);
186: e = setup_engine(bio_err, engine, 0);
187: }
188: #endif
189: else if (strcmp(*argv, "-hex") == 0)
190: out_bin = 0;
191: else if (strcmp(*argv, "-binary") == 0)
192: out_bin = 1;
193: else if (strcmp(*argv, "-d") == 0)
194: debug = 1;
195: else if (!strcmp(*argv, "-hmac")) {
196: if (--argc < 1)
197: break;
198: hmac_key = *++argv;
199: } else if (!strcmp(*argv, "-mac")) {
200: if (--argc < 1)
201: break;
202: mac_name = *++argv;
203: } else if (strcmp(*argv, "-sigopt") == 0) {
204: if (--argc < 1)
205: break;
206: if (!sigopts)
207: sigopts = sk_OPENSSL_STRING_new_null();
208: if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv)))
209: break;
210: } else if (strcmp(*argv, "-macopt") == 0) {
211: if (--argc < 1)
212: break;
213: if (!macopts)
214: macopts = sk_OPENSSL_STRING_new_null();
215: if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv)))
216: break;
217: } else if ((m = EVP_get_digestbyname(&((*argv)[1]))) != NULL)
218: md = m;
219: else
220: break;
221: argc--;
222: argv++;
223: }
224:
225:
226: if (do_verify && !sigfile) {
227: BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
228: goto end;
229: }
230: if ((argc > 0) && (argv[0][0] == '-')) { /* bad option */
231: BIO_printf(bio_err, "unknown option '%s'\n", *argv);
232: BIO_printf(bio_err, "options are\n");
233: BIO_printf(bio_err, "-c to output the digest with separating colons\n");
234: BIO_printf(bio_err, "-r to output the digest in coreutils format\n");
235: BIO_printf(bio_err, "-d to output debug info\n");
236: BIO_printf(bio_err, "-hex output as hex dump\n");
237: BIO_printf(bio_err, "-binary output in binary form\n");
238: BIO_printf(bio_err, "-sign file sign digest using private key in file\n");
239: BIO_printf(bio_err, "-verify file verify a signature using public key in file\n");
240: BIO_printf(bio_err, "-prverify file verify a signature using private key in file\n");
241: BIO_printf(bio_err, "-keyform arg key file format (PEM or ENGINE)\n");
242: BIO_printf(bio_err, "-out filename output to filename rather than stdout\n");
243: BIO_printf(bio_err, "-signature file signature to verify\n");
244: BIO_printf(bio_err, "-sigopt nm:v signature parameter\n");
245: BIO_printf(bio_err, "-hmac key create hashed MAC with key\n");
246: BIO_printf(bio_err, "-mac algorithm create MAC (not neccessarily HMAC)\n");
247: BIO_printf(bio_err, "-macopt nm:v MAC algorithm parameters or key\n");
248: #ifndef OPENSSL_NO_ENGINE
249: BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n");
250: #endif
251:
252: EVP_MD_do_all_sorted(list_md_fn, bio_err);
253: goto end;
254: }
1.2 doug 255:
1.1 jsing 256: in = BIO_new(BIO_s_file());
257: bmd = BIO_new(BIO_f_md());
1.2 doug 258: if (in == NULL || bmd == NULL) {
259: ERR_print_errors(bio_err);
260: goto end;
261: }
262:
1.1 jsing 263: if (debug) {
264: BIO_set_callback(in, BIO_debug_callback);
265: /* needed for windows 3.1 */
266: BIO_set_callback_arg(in, (char *) bio_err);
267: }
268: if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
269: BIO_printf(bio_err, "Error getting password\n");
270: goto end;
271: }
272: if (out_bin == -1) {
273: if (keyfile)
274: out_bin = 1;
275: else
276: out_bin = 0;
277: }
278:
279: if (outfile) {
280: if (out_bin)
281: out = BIO_new_file(outfile, "wb");
282: else
283: out = BIO_new_file(outfile, "w");
284: } else {
285: out = BIO_new_fp(stdout, BIO_NOCLOSE);
286: }
287:
288: if (!out) {
289: BIO_printf(bio_err, "Error opening output file %s\n",
290: outfile ? outfile : "(stdout)");
291: ERR_print_errors(bio_err);
292: goto end;
293: }
294: if ((!!mac_name + !!keyfile + !!hmac_key) > 1) {
295: BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
296: goto end;
297: }
298: if (keyfile) {
299: if (want_pub)
300: sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
301: e, "key file");
302: else
303: sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
304: e, "key file");
305: if (!sigkey) {
306: /*
307: * load_[pub]key() has already printed an appropriate
308: * message
309: */
310: goto end;
311: }
312: }
313: if (mac_name) {
314: EVP_PKEY_CTX *mac_ctx = NULL;
315: int r = 0;
316: if (!init_gen_str(bio_err, &mac_ctx, mac_name, e, 0))
317: goto mac_end;
318: if (macopts) {
319: char *macopt;
320: for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
321: macopt = sk_OPENSSL_STRING_value(macopts, i);
322: if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
323: BIO_printf(bio_err,
324: "MAC parameter error \"%s\"\n",
325: macopt);
326: ERR_print_errors(bio_err);
327: goto mac_end;
328: }
329: }
330: }
331: if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
332: BIO_puts(bio_err, "Error generating key\n");
333: ERR_print_errors(bio_err);
334: goto mac_end;
335: }
336: r = 1;
337: mac_end:
338: if (mac_ctx)
339: EVP_PKEY_CTX_free(mac_ctx);
340: if (r == 0)
341: goto end;
342: }
343: if (hmac_key) {
344: sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, e,
345: (unsigned char *) hmac_key, -1);
346: if (!sigkey)
347: goto end;
348: }
349: if (sigkey) {
350: EVP_MD_CTX *mctx = NULL;
351: EVP_PKEY_CTX *pctx = NULL;
352: int r;
353: if (!BIO_get_md_ctx(bmd, &mctx)) {
354: BIO_printf(bio_err, "Error getting context\n");
355: ERR_print_errors(bio_err);
356: goto end;
357: }
358: if (do_verify)
359: r = EVP_DigestVerifyInit(mctx, &pctx, md, NULL, sigkey);
360: else
361: r = EVP_DigestSignInit(mctx, &pctx, md, NULL, sigkey);
362: if (!r) {
363: BIO_printf(bio_err, "Error setting context\n");
364: ERR_print_errors(bio_err);
365: goto end;
366: }
367: if (sigopts) {
368: char *sigopt;
369: for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
370: sigopt = sk_OPENSSL_STRING_value(sigopts, i);
371: if (pkey_ctrl_string(pctx, sigopt) <= 0) {
372: BIO_printf(bio_err,
373: "parameter error \"%s\"\n",
374: sigopt);
375: ERR_print_errors(bio_err);
376: goto end;
377: }
378: }
379: }
380: }
381: /* we use md as a filter, reading from 'in' */
382: else {
383: if (md == NULL)
384: md = EVP_md5();
385: if (!BIO_set_md(bmd, md)) {
386: BIO_printf(bio_err, "Error setting digest %s\n", pname);
387: ERR_print_errors(bio_err);
388: goto end;
389: }
390: }
391:
392: if (sigfile && sigkey) {
393: BIO *sigbio;
394: siglen = EVP_PKEY_size(sigkey);
395: sigbuf = malloc(siglen);
1.3 rpointel 396: if (sigbuf == NULL) {
397: BIO_printf(bio_err, "out of memory\n");
398: ERR_print_errors(bio_err);
399: goto end;
400: }
401: sigbio = BIO_new_file(sigfile, "rb");
1.1 jsing 402: if (!sigbio) {
403: BIO_printf(bio_err, "Error opening signature file %s\n",
404: sigfile);
405: ERR_print_errors(bio_err);
406: goto end;
407: }
408: siglen = BIO_read(sigbio, sigbuf, siglen);
409: BIO_free(sigbio);
410: if (siglen <= 0) {
411: BIO_printf(bio_err, "Error reading signature file %s\n",
412: sigfile);
413: ERR_print_errors(bio_err);
414: goto end;
415: }
416: }
417: inp = BIO_push(bmd, in);
418:
419: if (md == NULL) {
420: EVP_MD_CTX *tctx;
421: BIO_get_md_ctx(bmd, &tctx);
422: md = EVP_MD_CTX_md(tctx);
423: }
424: if (argc == 0) {
425: BIO_set_fp(in, stdin, BIO_NOCLOSE);
426: err = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
427: siglen, NULL, NULL, "stdin", bmd);
428: } else {
429: const char *md_name = NULL, *sig_name = NULL;
430: if (!out_bin) {
431: if (sigkey) {
432: const EVP_PKEY_ASN1_METHOD *ameth;
433: ameth = EVP_PKEY_get0_asn1(sigkey);
434: if (ameth)
435: EVP_PKEY_asn1_get0_info(NULL, NULL,
436: NULL, NULL, &sig_name, ameth);
437: }
438: md_name = EVP_MD_name(md);
439: }
440: err = 0;
441: for (i = 0; i < argc; i++) {
442: int r;
443: if (BIO_read_filename(in, argv[i]) <= 0) {
444: perror(argv[i]);
445: err++;
446: continue;
447: } else {
448: r = do_fp(out, buf, inp, separator, out_bin,
449: sigkey, sigbuf, siglen, sig_name, md_name,
450: argv[i], bmd);
451: }
452: if (r)
453: err = r;
454: (void) BIO_reset(bmd);
455: }
456: }
457:
458: end:
459: if (buf != NULL) {
1.5 ! jsing 460: explicit_bzero(buf, BUFSIZE);
1.1 jsing 461: free(buf);
462: }
463: if (in != NULL)
464: BIO_free(in);
465: free(passin);
466: BIO_free_all(out);
467: EVP_PKEY_free(sigkey);
468: if (sigopts)
469: sk_OPENSSL_STRING_free(sigopts);
470: if (macopts)
471: sk_OPENSSL_STRING_free(macopts);
472: free(sigbuf);
473: if (bmd != NULL)
474: BIO_free(bmd);
475:
476: return (err);
477: }
478:
479: int
480: do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
481: EVP_PKEY * key, unsigned char *sigin, int siglen,
482: const char *sig_name, const char *md_name,
483: const char *file, BIO * bmd)
484: {
485: size_t len;
486: int i;
487:
488: for (;;) {
489: i = BIO_read(bp, (char *) buf, BUFSIZE);
490: if (i < 0) {
491: BIO_printf(bio_err, "Read Error in %s\n", file);
492: ERR_print_errors(bio_err);
493: return 1;
494: }
495: if (i == 0)
496: break;
497: }
498: if (sigin) {
499: EVP_MD_CTX *ctx;
500: BIO_get_md_ctx(bp, &ctx);
501: i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int) siglen);
502: if (i > 0)
503: BIO_printf(out, "Verified OK\n");
504: else if (i == 0) {
505: BIO_printf(out, "Verification Failure\n");
506: return 1;
507: } else {
508: BIO_printf(bio_err, "Error Verifying Data\n");
509: ERR_print_errors(bio_err);
510: return 1;
511: }
512: return 0;
513: }
514: if (key) {
515: EVP_MD_CTX *ctx;
516: BIO_get_md_ctx(bp, &ctx);
517: len = BUFSIZE;
518: if (!EVP_DigestSignFinal(ctx, buf, &len)) {
519: BIO_printf(bio_err, "Error Signing Data\n");
520: ERR_print_errors(bio_err);
521: return 1;
522: }
523: } else {
524: len = BIO_gets(bp, (char *) buf, BUFSIZE);
525: if ((int) len < 0) {
526: ERR_print_errors(bio_err);
527: return 1;
528: }
529: }
530:
531: if (binout)
532: BIO_write(out, buf, len);
533: else if (sep == 2) {
534: for (i = 0; i < (int) len; i++)
535: BIO_printf(out, "%02x", buf[i]);
536: BIO_printf(out, " *%s\n", file);
537: } else {
538: if (sig_name)
539: BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
540: else if (md_name)
541: BIO_printf(out, "%s(%s)= ", md_name, file);
542: else
543: BIO_printf(out, "(%s)= ", file);
544: for (i = 0; i < (int) len; i++) {
545: if (sep && (i != 0))
546: BIO_printf(out, ":");
547: BIO_printf(out, "%02x", buf[i]);
548: }
549: BIO_printf(out, "\n");
550: }
551: return 0;
552: }