xref: /freebsd/crypto/openssl/apps/pkeyutl.c (revision 076ad2f836d5f49dc1375f1677335a48fe0d4b82)
1 /*
2  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
3  * 2006.
4  */
5 /* ====================================================================
6  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * 3. All advertising materials mentioning features or use of this
21  *    software must display the following acknowledgment:
22  *    "This product includes software developed by the OpenSSL Project
23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24  *
25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26  *    endorse or promote products derived from this software without
27  *    prior written permission. For written permission, please contact
28  *    licensing@OpenSSL.org.
29  *
30  * 5. Products derived from this software may not be called "OpenSSL"
31  *    nor may "OpenSSL" appear in their names without prior written
32  *    permission of the OpenSSL Project.
33  *
34  * 6. Redistributions of any form whatsoever must retain the following
35  *    acknowledgment:
36  *    "This product includes software developed by the OpenSSL Project
37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38  *
39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50  * OF THE POSSIBILITY OF SUCH DAMAGE.
51  * ====================================================================
52  *
53  * This product includes cryptographic software written by Eric Young
54  * (eay@cryptsoft.com).  This product includes software written by Tim
55  * Hudson (tjh@cryptsoft.com).
56  *
57  */
58 
59 #include "apps.h"
60 #include <string.h>
61 #include <openssl/err.h>
62 #include <openssl/pem.h>
63 #include <openssl/evp.h>
64 
65 #define KEY_PRIVKEY     1
66 #define KEY_PUBKEY      2
67 #define KEY_CERT        3
68 
69 static void usage(void);
70 
71 #undef PROG
72 
73 #define PROG pkeyutl_main
74 
75 static EVP_PKEY_CTX *init_ctx(int *pkeysize,
76                               const char *keyfile, int keyform, int key_type,
77                               char *passargin, int pkey_op, ENGINE *e,
78                               int   impl);
79 
80 static int setup_peer(BIO *err, EVP_PKEY_CTX *ctx, int peerform,
81                       const char *file, ENGINE* e);
82 
83 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
84                     unsigned char *out, size_t *poutlen,
85                     unsigned char *in, size_t inlen);
86 
87 int MAIN(int argc, char **);
88 
89 int MAIN(int argc, char **argv)
90 {
91     BIO *in = NULL, *out = NULL;
92     char *infile = NULL, *outfile = NULL, *sigfile = NULL;
93     ENGINE *e = NULL;
94     int pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
95     int keyform = FORMAT_PEM, peerform = FORMAT_PEM;
96     char badarg = 0, rev = 0;
97     char hexdump = 0, asn1parse = 0;
98     EVP_PKEY_CTX *ctx = NULL;
99     char *passargin = NULL;
100     int keysize = -1;
101     int engine_impl = 0;
102     unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
103     size_t buf_outlen = 0;
104     int buf_inlen = 0, siglen = -1;
105     const char *inkey = NULL;
106     const char *peerkey = NULL;
107     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
108 
109     int ret = 1, rv = -1;
110 
111     argc--;
112     argv++;
113 
114     if (!bio_err)
115         bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
116 
117     if (!load_config(bio_err, NULL))
118         goto end;
119     ERR_load_crypto_strings();
120     OpenSSL_add_all_algorithms();
121 
122     while (argc >= 1) {
123         if (!strcmp(*argv, "-in")) {
124             if (--argc < 1)
125                 badarg = 1;
126             else
127                 infile = *(++argv);
128         } else if (!strcmp(*argv, "-out")) {
129             if (--argc < 1)
130                 badarg = 1;
131             else
132                 outfile = *(++argv);
133         } else if (!strcmp(*argv, "-sigfile")) {
134             if (--argc < 1)
135                 badarg = 1;
136             else
137                 sigfile = *(++argv);
138         } else if (!strcmp(*argv, "-inkey")) {
139             if (--argc < 1)
140                 badarg = 1;
141             else
142                 inkey = *++argv;
143         } else if (!strcmp(*argv, "-peerkey")) {
144             if (--argc < 1)
145                 badarg = 1;
146             else
147                 peerkey = *++argv;
148         } else if (!strcmp(*argv, "-passin")) {
149             if (--argc < 1)
150                 badarg = 1;
151             else
152                 passargin = *(++argv);
153         } else if (strcmp(*argv, "-peerform") == 0) {
154             if (--argc < 1)
155                 badarg = 1;
156             else
157                 peerform = str2fmt(*(++argv));
158         } else if (strcmp(*argv, "-keyform") == 0) {
159             if (--argc < 1)
160                 badarg = 1;
161             else
162                 keyform = str2fmt(*(++argv));
163         }
164 #ifndef OPENSSL_NO_ENGINE
165         else if (!strcmp(*argv, "-engine")) {
166             if (--argc < 1)
167                 badarg = 1;
168             else
169                 e = setup_engine(bio_err, *(++argv), 0);
170         } else if (!strcmp(*argv, "-engine_impl")) {
171                 engine_impl = 1;
172         }
173 #endif
174         else if (!strcmp(*argv, "-pubin"))
175             key_type = KEY_PUBKEY;
176         else if (!strcmp(*argv, "-certin"))
177             key_type = KEY_CERT;
178         else if (!strcmp(*argv, "-asn1parse"))
179             asn1parse = 1;
180         else if (!strcmp(*argv, "-hexdump"))
181             hexdump = 1;
182         else if (!strcmp(*argv, "-sign"))
183             pkey_op = EVP_PKEY_OP_SIGN;
184         else if (!strcmp(*argv, "-verify"))
185             pkey_op = EVP_PKEY_OP_VERIFY;
186         else if (!strcmp(*argv, "-verifyrecover"))
187             pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
188         else if (!strcmp(*argv, "-encrypt"))
189             pkey_op = EVP_PKEY_OP_ENCRYPT;
190         else if (!strcmp(*argv, "-decrypt"))
191             pkey_op = EVP_PKEY_OP_DECRYPT;
192         else if (!strcmp(*argv, "-derive"))
193             pkey_op = EVP_PKEY_OP_DERIVE;
194         else if (!strcmp(*argv, "-rev"))
195             rev = 1;
196         else if (strcmp(*argv, "-pkeyopt") == 0) {
197             if (--argc < 1)
198                 badarg = 1;
199             else if ((pkeyopts == NULL &&
200                      (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
201                     sk_OPENSSL_STRING_push(pkeyopts, *++argv) == 0) {
202                 BIO_puts(bio_err, "out of memory\n");
203                 goto end;
204             }
205         } else
206             badarg = 1;
207         if (badarg) {
208             usage();
209             goto end;
210         }
211         argc--;
212         argv++;
213     }
214 
215     if (inkey == NULL ||
216         (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE)) {
217         usage();
218         goto end;
219     }
220     ctx = init_ctx(&keysize, inkey, keyform, key_type,
221                    passargin, pkey_op, e, engine_impl);
222     if (!ctx) {
223         BIO_puts(bio_err, "Error initializing context\n");
224         ERR_print_errors(bio_err);
225         goto end;
226     }
227     if (peerkey != NULL && !setup_peer(bio_err, ctx, peerform, peerkey, e)) {
228         BIO_puts(bio_err, "Error setting up peer key\n");
229         ERR_print_errors(bio_err);
230         goto end;
231     }
232     if (pkeyopts != NULL) {
233         int num = sk_OPENSSL_STRING_num(pkeyopts);
234         int i;
235 
236         for (i = 0; i < num; ++i) {
237             const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
238 
239             if (pkey_ctrl_string(ctx, opt) <= 0) {
240                 BIO_puts(bio_err, "parameter setting error\n");
241                 ERR_print_errors(bio_err);
242                 goto end;
243             }
244         }
245     }
246 
247     if (sigfile && (pkey_op != EVP_PKEY_OP_VERIFY)) {
248         BIO_puts(bio_err, "Signature file specified for non verify\n");
249         goto end;
250     }
251 
252     if (!sigfile && (pkey_op == EVP_PKEY_OP_VERIFY)) {
253         BIO_puts(bio_err, "No signature file specified for verify\n");
254         goto end;
255     }
256 
257 /* FIXME: seed PRNG only if needed */
258     app_RAND_load_file(NULL, bio_err, 0);
259 
260     if (pkey_op != EVP_PKEY_OP_DERIVE) {
261         if (infile) {
262             if (!(in = BIO_new_file(infile, "rb"))) {
263                 BIO_puts(bio_err, "Error Opening Input File\n");
264                 ERR_print_errors(bio_err);
265                 goto end;
266             }
267         } else
268             in = BIO_new_fp(stdin, BIO_NOCLOSE);
269     }
270 
271     if (outfile) {
272         if (!(out = BIO_new_file(outfile, "wb"))) {
273             BIO_printf(bio_err, "Error Creating Output File\n");
274             ERR_print_errors(bio_err);
275             goto end;
276         }
277     } else {
278         out = BIO_new_fp(stdout, BIO_NOCLOSE);
279 #ifdef OPENSSL_SYS_VMS
280         {
281             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
282             out = BIO_push(tmpbio, out);
283         }
284 #endif
285     }
286 
287     if (sigfile) {
288         BIO *sigbio = BIO_new_file(sigfile, "rb");
289         if (!sigbio) {
290             BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
291             goto end;
292         }
293         siglen = bio_to_mem(&sig, keysize * 10, sigbio);
294         BIO_free(sigbio);
295         if (siglen < 0) {
296             BIO_printf(bio_err, "Error reading signature data\n");
297             goto end;
298         }
299     }
300 
301     if (in) {
302         /* Read the input data */
303         buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
304         if (buf_inlen < 0) {
305             BIO_printf(bio_err, "Error reading input Data\n");
306             exit(1);
307         }
308         if (rev) {
309             size_t i;
310             unsigned char ctmp;
311             size_t l = (size_t)buf_inlen;
312             for (i = 0; i < l / 2; i++) {
313                 ctmp = buf_in[i];
314                 buf_in[i] = buf_in[l - 1 - i];
315                 buf_in[l - 1 - i] = ctmp;
316             }
317         }
318     }
319 
320     if (pkey_op == EVP_PKEY_OP_VERIFY) {
321         rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
322                              buf_in, (size_t)buf_inlen);
323         if (rv == 0)
324             BIO_puts(out, "Signature Verification Failure\n");
325         else if (rv == 1)
326             BIO_puts(out, "Signature Verified Successfully\n");
327         if (rv >= 0)
328             goto end;
329     } else {
330         rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
331                       buf_in, (size_t)buf_inlen);
332         if (rv > 0 && buf_outlen != 0) {
333             buf_out = OPENSSL_malloc(buf_outlen);
334             if (!buf_out)
335                 rv = -1;
336             else
337                 rv = do_keyop(ctx, pkey_op,
338                               buf_out, (size_t *)&buf_outlen,
339                               buf_in, (size_t)buf_inlen);
340         }
341     }
342 
343     if (rv <= 0) {
344         BIO_printf(bio_err, "Public Key operation error\n");
345         ERR_print_errors(bio_err);
346         goto end;
347     }
348     ret = 0;
349     if (asn1parse) {
350         if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
351             ERR_print_errors(bio_err);
352     } else if (hexdump)
353         BIO_dump(out, (char *)buf_out, buf_outlen);
354     else
355         BIO_write(out, buf_out, buf_outlen);
356 
357  end:
358     if (ctx)
359         EVP_PKEY_CTX_free(ctx);
360     release_engine(e);
361     BIO_free(in);
362     BIO_free_all(out);
363     if (buf_in != NULL)
364         OPENSSL_free(buf_in);
365     if (buf_out != NULL)
366         OPENSSL_free(buf_out);
367     if (sig != NULL)
368         OPENSSL_free(sig);
369     if (pkeyopts != NULL)
370         sk_OPENSSL_STRING_free(pkeyopts);
371     return ret;
372 }
373 
374 static void usage()
375 {
376     BIO_printf(bio_err, "Usage: pkeyutl [options]\n");
377     BIO_printf(bio_err, "-in file        input file\n");
378     BIO_printf(bio_err, "-out file       output file\n");
379     BIO_printf(bio_err,
380                "-sigfile file signature file (verify operation only)\n");
381     BIO_printf(bio_err, "-inkey file     input key\n");
382     BIO_printf(bio_err, "-keyform arg    private key format - default PEM\n");
383     BIO_printf(bio_err, "-pubin          input is a public key\n");
384     BIO_printf(bio_err,
385                "-certin         input is a certificate carrying a public key\n");
386     BIO_printf(bio_err, "-pkeyopt X:Y    public key options\n");
387     BIO_printf(bio_err, "-sign           sign with private key\n");
388     BIO_printf(bio_err, "-verify         verify with public key\n");
389     BIO_printf(bio_err,
390                "-verifyrecover  verify with public key, recover original data\n");
391     BIO_printf(bio_err, "-encrypt        encrypt with public key\n");
392     BIO_printf(bio_err, "-decrypt        decrypt with private key\n");
393     BIO_printf(bio_err, "-derive         derive shared secret\n");
394     BIO_printf(bio_err, "-hexdump        hex dump output\n");
395 #ifndef OPENSSL_NO_ENGINE
396     BIO_printf(bio_err,
397                "-engine e       use engine e, maybe a hardware device, for loading keys.\n");
398     BIO_printf(bio_err, "-engine_impl    also use engine given by -engine for crypto operations\n");
399 #endif
400     BIO_printf(bio_err, "-passin arg     pass phrase source\n");
401 
402 }
403 
404 static EVP_PKEY_CTX *init_ctx(int *pkeysize,
405                               const char *keyfile, int keyform, int key_type,
406                               char *passargin, int pkey_op, ENGINE *e,
407                               int   engine_impl)
408 {
409     EVP_PKEY *pkey = NULL;
410     EVP_PKEY_CTX *ctx = NULL;
411     ENGINE *impl = NULL;
412     char *passin = NULL;
413     int rv = -1;
414     X509 *x;
415     if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
416          || (pkey_op == EVP_PKEY_OP_DERIVE))
417         && (key_type != KEY_PRIVKEY)) {
418         BIO_printf(bio_err, "A private key is needed for this operation\n");
419         goto end;
420     }
421     if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
422         BIO_printf(bio_err, "Error getting password\n");
423         goto end;
424     }
425     switch (key_type) {
426     case KEY_PRIVKEY:
427         pkey = load_key(bio_err, keyfile, keyform, 0,
428                         passin, e, "Private Key");
429         break;
430 
431     case KEY_PUBKEY:
432         pkey = load_pubkey(bio_err, keyfile, keyform, 0,
433                            NULL, e, "Public Key");
434         break;
435 
436     case KEY_CERT:
437         x = load_cert(bio_err, keyfile, keyform, NULL, e, "Certificate");
438         if (x) {
439             pkey = X509_get_pubkey(x);
440             X509_free(x);
441         }
442         break;
443 
444     }
445 
446     *pkeysize = EVP_PKEY_size(pkey);
447 
448     if (!pkey)
449         goto end;
450 
451 #ifndef OPENSSL_NO_ENGINE
452     if (engine_impl)
453 	impl = e;
454 #endif
455 
456     ctx = EVP_PKEY_CTX_new(pkey, impl);
457 
458     EVP_PKEY_free(pkey);
459 
460     if (!ctx)
461         goto end;
462 
463     switch (pkey_op) {
464     case EVP_PKEY_OP_SIGN:
465         rv = EVP_PKEY_sign_init(ctx);
466         break;
467 
468     case EVP_PKEY_OP_VERIFY:
469         rv = EVP_PKEY_verify_init(ctx);
470         break;
471 
472     case EVP_PKEY_OP_VERIFYRECOVER:
473         rv = EVP_PKEY_verify_recover_init(ctx);
474         break;
475 
476     case EVP_PKEY_OP_ENCRYPT:
477         rv = EVP_PKEY_encrypt_init(ctx);
478         break;
479 
480     case EVP_PKEY_OP_DECRYPT:
481         rv = EVP_PKEY_decrypt_init(ctx);
482         break;
483 
484     case EVP_PKEY_OP_DERIVE:
485         rv = EVP_PKEY_derive_init(ctx);
486         break;
487     }
488 
489     if (rv <= 0) {
490         EVP_PKEY_CTX_free(ctx);
491         ctx = NULL;
492     }
493 
494  end:
495 
496     if (passin)
497         OPENSSL_free(passin);
498 
499     return ctx;
500 
501 }
502 
503 static int setup_peer(BIO *err, EVP_PKEY_CTX *ctx, int peerform,
504                       const char *file, ENGINE* e)
505 {
506     EVP_PKEY *peer = NULL;
507     ENGINE* engine = NULL;
508     int ret;
509 
510     if (peerform == FORMAT_ENGINE)
511         engine = e;
512     peer = load_pubkey(bio_err, file, peerform, 0, NULL, engine, "Peer Key");
513 
514     if (!peer) {
515         BIO_printf(bio_err, "Error reading peer key %s\n", file);
516         ERR_print_errors(err);
517         return 0;
518     }
519 
520     ret = EVP_PKEY_derive_set_peer(ctx, peer);
521 
522     EVP_PKEY_free(peer);
523     if (ret <= 0)
524         ERR_print_errors(err);
525     return ret;
526 }
527 
528 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
529                     unsigned char *out, size_t *poutlen,
530                     unsigned char *in, size_t inlen)
531 {
532     int rv = 0;
533     switch (pkey_op) {
534     case EVP_PKEY_OP_VERIFYRECOVER:
535         rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
536         break;
537 
538     case EVP_PKEY_OP_SIGN:
539         rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
540         break;
541 
542     case EVP_PKEY_OP_ENCRYPT:
543         rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
544         break;
545 
546     case EVP_PKEY_OP_DECRYPT:
547         rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
548         break;
549 
550     case EVP_PKEY_OP_DERIVE:
551         rv = EVP_PKEY_derive(ctx, out, poutlen);
552         break;
553 
554     }
555     return rv;
556 }
557