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1.6 ! bcook 1: /* $OpenBSD: dgst.c,v 1.5 2015/09/10 16:01:06 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: 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;
125:
126: if ((buf = malloc(BUFSIZE)) == NULL) {
127: BIO_printf(bio_err, "out of memory\n");
128: goto end;
129: }
130:
131: /* first check the program name */
132: program_name(argv[0], pname, sizeof pname);
133:
134: md = EVP_get_digestbyname(pname);
135:
136: argc--;
137: argv++;
138: while (argc > 0) {
139: if ((*argv)[0] != '-')
140: break;
141: if (strcmp(*argv, "-c") == 0)
142: separator = 1;
143: else if (strcmp(*argv, "-r") == 0)
144: separator = 2;
145: else if (strcmp(*argv, "-out") == 0) {
146: if (--argc < 1)
147: break;
148: outfile = *(++argv);
149: } else if (strcmp(*argv, "-sign") == 0) {
150: if (--argc < 1)
151: break;
152: keyfile = *(++argv);
153: } else if (!strcmp(*argv, "-passin")) {
154: if (--argc < 1)
155: break;
156: passargin = *++argv;
157: } else if (strcmp(*argv, "-verify") == 0) {
158: if (--argc < 1)
159: break;
160: keyfile = *(++argv);
161: want_pub = 1;
162: do_verify = 1;
163: } else if (strcmp(*argv, "-prverify") == 0) {
164: if (--argc < 1)
165: break;
166: keyfile = *(++argv);
167: do_verify = 1;
168: } else if (strcmp(*argv, "-signature") == 0) {
169: if (--argc < 1)
170: break;
171: sigfile = *(++argv);
172: } else if (strcmp(*argv, "-keyform") == 0) {
173: if (--argc < 1)
174: break;
175: keyform = str2fmt(*(++argv));
176: }
177: else if (strcmp(*argv, "-hex") == 0)
178: out_bin = 0;
179: else if (strcmp(*argv, "-binary") == 0)
180: out_bin = 1;
181: else if (strcmp(*argv, "-d") == 0)
182: debug = 1;
183: else if (!strcmp(*argv, "-hmac")) {
184: if (--argc < 1)
185: break;
186: hmac_key = *++argv;
187: } else if (!strcmp(*argv, "-mac")) {
188: if (--argc < 1)
189: break;
190: mac_name = *++argv;
191: } else if (strcmp(*argv, "-sigopt") == 0) {
192: if (--argc < 1)
193: break;
194: if (!sigopts)
195: sigopts = sk_OPENSSL_STRING_new_null();
196: if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv)))
197: break;
198: } else if (strcmp(*argv, "-macopt") == 0) {
199: if (--argc < 1)
200: break;
201: if (!macopts)
202: macopts = sk_OPENSSL_STRING_new_null();
203: if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv)))
204: break;
205: } else if ((m = EVP_get_digestbyname(&((*argv)[1]))) != NULL)
206: md = m;
207: else
208: break;
209: argc--;
210: argv++;
211: }
212:
213:
214: if (do_verify && !sigfile) {
215: BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
216: goto end;
217: }
218: if ((argc > 0) && (argv[0][0] == '-')) { /* bad option */
219: BIO_printf(bio_err, "unknown option '%s'\n", *argv);
220: BIO_printf(bio_err, "options are\n");
221: BIO_printf(bio_err, "-c to output the digest with separating colons\n");
222: BIO_printf(bio_err, "-r to output the digest in coreutils format\n");
223: BIO_printf(bio_err, "-d to output debug info\n");
224: BIO_printf(bio_err, "-hex output as hex dump\n");
225: BIO_printf(bio_err, "-binary output in binary form\n");
226: BIO_printf(bio_err, "-sign file sign digest using private key in file\n");
227: BIO_printf(bio_err, "-verify file verify a signature using public key in file\n");
228: BIO_printf(bio_err, "-prverify file verify a signature using private key in file\n");
1.6 ! bcook 229: BIO_printf(bio_err, "-keyform arg key file format (PEM)\n");
1.1 jsing 230: BIO_printf(bio_err, "-out filename output to filename rather than stdout\n");
231: BIO_printf(bio_err, "-signature file signature to verify\n");
232: BIO_printf(bio_err, "-sigopt nm:v signature parameter\n");
233: BIO_printf(bio_err, "-hmac key create hashed MAC with key\n");
234: BIO_printf(bio_err, "-mac algorithm create MAC (not neccessarily HMAC)\n");
235: BIO_printf(bio_err, "-macopt nm:v MAC algorithm parameters or key\n");
236:
237: EVP_MD_do_all_sorted(list_md_fn, bio_err);
238: goto end;
239: }
1.2 doug 240:
1.1 jsing 241: in = BIO_new(BIO_s_file());
242: bmd = BIO_new(BIO_f_md());
1.2 doug 243: if (in == NULL || bmd == NULL) {
244: ERR_print_errors(bio_err);
245: goto end;
246: }
247:
1.1 jsing 248: if (debug) {
249: BIO_set_callback(in, BIO_debug_callback);
250: /* needed for windows 3.1 */
251: BIO_set_callback_arg(in, (char *) bio_err);
252: }
253: if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
254: BIO_printf(bio_err, "Error getting password\n");
255: goto end;
256: }
257: if (out_bin == -1) {
258: if (keyfile)
259: out_bin = 1;
260: else
261: out_bin = 0;
262: }
263:
264: if (outfile) {
265: if (out_bin)
266: out = BIO_new_file(outfile, "wb");
267: else
268: out = BIO_new_file(outfile, "w");
269: } else {
270: out = BIO_new_fp(stdout, BIO_NOCLOSE);
271: }
272:
273: if (!out) {
274: BIO_printf(bio_err, "Error opening output file %s\n",
275: outfile ? outfile : "(stdout)");
276: ERR_print_errors(bio_err);
277: goto end;
278: }
279: if ((!!mac_name + !!keyfile + !!hmac_key) > 1) {
280: BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
281: goto end;
282: }
283: if (keyfile) {
284: if (want_pub)
285: sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
1.6 ! bcook 286: "key file");
1.1 jsing 287: else
288: sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
1.6 ! bcook 289: "key file");
1.1 jsing 290: if (!sigkey) {
291: /*
292: * load_[pub]key() has already printed an appropriate
293: * message
294: */
295: goto end;
296: }
297: }
298: if (mac_name) {
299: EVP_PKEY_CTX *mac_ctx = NULL;
300: int r = 0;
1.6 ! bcook 301: if (!init_gen_str(bio_err, &mac_ctx, mac_name, 0))
1.1 jsing 302: goto mac_end;
303: if (macopts) {
304: char *macopt;
305: for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
306: macopt = sk_OPENSSL_STRING_value(macopts, i);
307: if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
308: BIO_printf(bio_err,
309: "MAC parameter error \"%s\"\n",
310: macopt);
311: ERR_print_errors(bio_err);
312: goto mac_end;
313: }
314: }
315: }
316: if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
317: BIO_puts(bio_err, "Error generating key\n");
318: ERR_print_errors(bio_err);
319: goto mac_end;
320: }
321: r = 1;
322: mac_end:
323: if (mac_ctx)
324: EVP_PKEY_CTX_free(mac_ctx);
325: if (r == 0)
326: goto end;
327: }
328: if (hmac_key) {
1.6 ! bcook 329: sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL,
1.1 jsing 330: (unsigned char *) hmac_key, -1);
331: if (!sigkey)
332: goto end;
333: }
334: if (sigkey) {
335: EVP_MD_CTX *mctx = NULL;
336: EVP_PKEY_CTX *pctx = NULL;
337: int r;
338: if (!BIO_get_md_ctx(bmd, &mctx)) {
339: BIO_printf(bio_err, "Error getting context\n");
340: ERR_print_errors(bio_err);
341: goto end;
342: }
343: if (do_verify)
344: r = EVP_DigestVerifyInit(mctx, &pctx, md, NULL, sigkey);
345: else
346: r = EVP_DigestSignInit(mctx, &pctx, md, NULL, sigkey);
347: if (!r) {
348: BIO_printf(bio_err, "Error setting context\n");
349: ERR_print_errors(bio_err);
350: goto end;
351: }
352: if (sigopts) {
353: char *sigopt;
354: for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
355: sigopt = sk_OPENSSL_STRING_value(sigopts, i);
356: if (pkey_ctrl_string(pctx, sigopt) <= 0) {
357: BIO_printf(bio_err,
358: "parameter error \"%s\"\n",
359: sigopt);
360: ERR_print_errors(bio_err);
361: goto end;
362: }
363: }
364: }
365: }
366: /* we use md as a filter, reading from 'in' */
367: else {
368: if (md == NULL)
369: md = EVP_md5();
370: if (!BIO_set_md(bmd, md)) {
371: BIO_printf(bio_err, "Error setting digest %s\n", pname);
372: ERR_print_errors(bio_err);
373: goto end;
374: }
375: }
376:
377: if (sigfile && sigkey) {
378: BIO *sigbio;
379: siglen = EVP_PKEY_size(sigkey);
380: sigbuf = malloc(siglen);
1.3 rpointel 381: if (sigbuf == NULL) {
382: BIO_printf(bio_err, "out of memory\n");
383: ERR_print_errors(bio_err);
384: goto end;
385: }
386: sigbio = BIO_new_file(sigfile, "rb");
1.1 jsing 387: if (!sigbio) {
388: BIO_printf(bio_err, "Error opening signature file %s\n",
389: sigfile);
390: ERR_print_errors(bio_err);
391: goto end;
392: }
393: siglen = BIO_read(sigbio, sigbuf, siglen);
394: BIO_free(sigbio);
395: if (siglen <= 0) {
396: BIO_printf(bio_err, "Error reading signature file %s\n",
397: sigfile);
398: ERR_print_errors(bio_err);
399: goto end;
400: }
401: }
402: inp = BIO_push(bmd, in);
403:
404: if (md == NULL) {
405: EVP_MD_CTX *tctx;
406: BIO_get_md_ctx(bmd, &tctx);
407: md = EVP_MD_CTX_md(tctx);
408: }
409: if (argc == 0) {
410: BIO_set_fp(in, stdin, BIO_NOCLOSE);
411: err = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
412: siglen, NULL, NULL, "stdin", bmd);
413: } else {
414: const char *md_name = NULL, *sig_name = NULL;
415: if (!out_bin) {
416: if (sigkey) {
417: const EVP_PKEY_ASN1_METHOD *ameth;
418: ameth = EVP_PKEY_get0_asn1(sigkey);
419: if (ameth)
420: EVP_PKEY_asn1_get0_info(NULL, NULL,
421: NULL, NULL, &sig_name, ameth);
422: }
423: md_name = EVP_MD_name(md);
424: }
425: err = 0;
426: for (i = 0; i < argc; i++) {
427: int r;
428: if (BIO_read_filename(in, argv[i]) <= 0) {
429: perror(argv[i]);
430: err++;
431: continue;
432: } else {
433: r = do_fp(out, buf, inp, separator, out_bin,
434: sigkey, sigbuf, siglen, sig_name, md_name,
435: argv[i], bmd);
436: }
437: if (r)
438: err = r;
439: (void) BIO_reset(bmd);
440: }
441: }
442:
443: end:
444: if (buf != NULL) {
1.5 jsing 445: explicit_bzero(buf, BUFSIZE);
1.1 jsing 446: free(buf);
447: }
448: if (in != NULL)
449: BIO_free(in);
450: free(passin);
451: BIO_free_all(out);
452: EVP_PKEY_free(sigkey);
453: if (sigopts)
454: sk_OPENSSL_STRING_free(sigopts);
455: if (macopts)
456: sk_OPENSSL_STRING_free(macopts);
457: free(sigbuf);
458: if (bmd != NULL)
459: BIO_free(bmd);
460:
461: return (err);
462: }
463:
464: int
465: do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
466: EVP_PKEY * key, unsigned char *sigin, int siglen,
467: const char *sig_name, const char *md_name,
468: const char *file, BIO * bmd)
469: {
470: size_t len;
471: int i;
472:
473: for (;;) {
474: i = BIO_read(bp, (char *) buf, BUFSIZE);
475: if (i < 0) {
476: BIO_printf(bio_err, "Read Error in %s\n", file);
477: ERR_print_errors(bio_err);
478: return 1;
479: }
480: if (i == 0)
481: break;
482: }
483: if (sigin) {
484: EVP_MD_CTX *ctx;
485: BIO_get_md_ctx(bp, &ctx);
486: i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int) siglen);
487: if (i > 0)
488: BIO_printf(out, "Verified OK\n");
489: else if (i == 0) {
490: BIO_printf(out, "Verification Failure\n");
491: return 1;
492: } else {
493: BIO_printf(bio_err, "Error Verifying Data\n");
494: ERR_print_errors(bio_err);
495: return 1;
496: }
497: return 0;
498: }
499: if (key) {
500: EVP_MD_CTX *ctx;
501: BIO_get_md_ctx(bp, &ctx);
502: len = BUFSIZE;
503: if (!EVP_DigestSignFinal(ctx, buf, &len)) {
504: BIO_printf(bio_err, "Error Signing Data\n");
505: ERR_print_errors(bio_err);
506: return 1;
507: }
508: } else {
509: len = BIO_gets(bp, (char *) buf, BUFSIZE);
510: if ((int) len < 0) {
511: ERR_print_errors(bio_err);
512: return 1;
513: }
514: }
515:
516: if (binout)
517: BIO_write(out, buf, len);
518: else if (sep == 2) {
519: for (i = 0; i < (int) len; i++)
520: BIO_printf(out, "%02x", buf[i]);
521: BIO_printf(out, " *%s\n", file);
522: } else {
523: if (sig_name)
524: BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
525: else if (md_name)
526: BIO_printf(out, "%s(%s)= ", md_name, file);
527: else
528: BIO_printf(out, "(%s)= ", file);
529: for (i = 0; i < (int) len; i++) {
530: if (sep && (i != 0))
531: BIO_printf(out, ":");
532: BIO_printf(out, "%02x", buf[i]);
533: }
534: BIO_printf(out, "\n");
535: }
536: return 0;
537: }