1 /*
2 * Copyright 2006-2025 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include "apps.h"
11 #include "progs.h"
12 #include <string.h>
13 #include <openssl/err.h>
14 #include <openssl/pem.h>
15 #include <openssl/evp.h>
16 #include <sys/stat.h>
17
18 #define KEY_NONE 0
19 #define KEY_PRIVKEY 1
20 #define KEY_PUBKEY 2
21 #define KEY_CERT 3
22
23 static EVP_PKEY *get_pkey(const char *kdfalg,
24 const char *keyfile, int keyform, int key_type,
25 char *passinarg, int pkey_op, ENGINE *e);
26 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
27 int pkey_op, ENGINE *e,
28 const int engine_impl, int rawin,
29 EVP_PKEY *pkey /* ownership is passed to ctx */,
30 EVP_MD_CTX *mctx, const char *digestname,
31 const char *kemop, OSSL_LIB_CTX *libctx, const char *propq);
32
33 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
34 ENGINE *e);
35
36 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
37 unsigned char *out, size_t *poutlen,
38 const unsigned char *in, size_t inlen,
39 unsigned char *secret, size_t *psecretlen);
40
41 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
42 EVP_PKEY *pkey, BIO *in,
43 int filesize, unsigned char *sig, int siglen,
44 unsigned char **out, size_t *poutlen);
45
only_nomd(EVP_PKEY * pkey)46 static int only_nomd(EVP_PKEY *pkey)
47 {
48 #define MADE_UP_MAX_MD_NAME_LEN 100
49 char defname[MADE_UP_MAX_MD_NAME_LEN];
50 int deftype;
51
52 deftype = EVP_PKEY_get_default_digest_name(pkey, defname, sizeof(defname));
53 return deftype == 2 /* Mandatory */
54 && strcmp(defname, "UNDEF") == 0;
55 }
56
57 typedef enum OPTION_choice {
58 OPT_COMMON,
59 OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
60 OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
61 OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
62 OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
63 OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
64 OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
65 OPT_DECAP, OPT_ENCAP, OPT_SECOUT, OPT_KEMOP,
66 OPT_CONFIG,
67 OPT_RAWIN, OPT_DIGEST
68 } OPTION_CHOICE;
69
70 const OPTIONS pkeyutl_options[] = {
71 OPT_SECTION("General"),
72 {"help", OPT_HELP, '-', "Display this summary"},
73 #ifndef OPENSSL_NO_ENGINE
74 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
75 {"engine_impl", OPT_ENGINE_IMPL, '-',
76 "Also use engine given by -engine for crypto operations"},
77 #endif
78 {"sign", OPT_SIGN, '-', "Sign input data with private key"},
79 {"verify", OPT_VERIFY, '-', "Verify with public key"},
80 {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
81 {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
82 {"derive", OPT_DERIVE, '-', "Derive shared secret from own and peer (EC)DH keys"},
83 {"decap", OPT_DECAP, '-', "Decapsulate shared secret"},
84 {"encap", OPT_ENCAP, '-', "Encapsulate shared secret"},
85 OPT_CONFIG_OPTION,
86
87 OPT_SECTION("Input"),
88 {"in", OPT_IN, '<', "Input file - default stdin"},
89 {"inkey", OPT_INKEY, 's', "Input key, by default private key"},
90 {"pubin", OPT_PUBIN, '-', "Input key is a public key"},
91 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
92 {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
93 {"peerform", OPT_PEERFORM, 'E', "Peer key format (DER/PEM/P12/ENGINE)"},
94 {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
95 {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
96 {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
97 {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
98
99 OPT_SECTION("Output"),
100 {"out", OPT_OUT, '>', "Output file - default stdout"},
101 {"secret", OPT_SECOUT, '>', "File to store secret on encapsulation"},
102 {"asn1parse", OPT_ASN1PARSE, '-',
103 "parse the output as ASN.1 data to check its DER encoding and print errors"},
104 {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
105 {"verifyrecover", OPT_VERIFYRECOVER, '-',
106 "Verify RSA signature, recovering original signature input data"},
107
108 OPT_SECTION("Signing/Derivation/Encapsulation"),
109 {"rawin", OPT_RAWIN, '-',
110 "Indicate that the signature/verification input data is not yet hashed"},
111 {"digest", OPT_DIGEST, 's',
112 "The digest algorithm to use for signing/verifying raw input data. Implies -rawin"},
113 {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
114 {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
115 "Public key option that is read as a passphrase argument opt:passphrase"},
116 {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
117 {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
118 {"kemop", OPT_KEMOP, 's', "KEM operation specific to the key algorithm"},
119
120 OPT_R_OPTIONS,
121 OPT_PROV_OPTIONS,
122 {NULL}
123 };
124
pkeyutl_main(int argc,char ** argv)125 int pkeyutl_main(int argc, char **argv)
126 {
127 CONF *conf = NULL;
128 BIO *in = NULL, *out = NULL, *secout = NULL;
129 ENGINE *e = NULL;
130 EVP_PKEY_CTX *ctx = NULL;
131 EVP_PKEY *pkey = NULL;
132 char *infile = NULL, *outfile = NULL, *secoutfile = NULL, *sigfile = NULL, *passinarg = NULL;
133 char hexdump = 0, asn1parse = 0, rev = 0, *prog;
134 unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL, *secret = NULL;
135 OPTION_CHOICE o;
136 int buf_inlen = 0, siglen = -1;
137 int keyform = FORMAT_UNDEF, peerform = FORMAT_UNDEF;
138 int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
139 int engine_impl = 0;
140 int ret = 1, rv = -1;
141 size_t buf_outlen = 0, secretlen = 0;
142 const char *inkey = NULL;
143 const char *peerkey = NULL;
144 const char *kdfalg = NULL, *digestname = NULL, *kemop = NULL;
145 int kdflen = 0;
146 STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
147 STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
148 int rawin = 0;
149 EVP_MD_CTX *mctx = NULL;
150 EVP_MD *md = NULL;
151 int filesize = -1;
152 OSSL_LIB_CTX *libctx = app_get0_libctx();
153
154 prog = opt_init(argc, argv, pkeyutl_options);
155 while ((o = opt_next()) != OPT_EOF) {
156 switch (o) {
157 case OPT_EOF:
158 case OPT_ERR:
159 opthelp:
160 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
161 goto end;
162 case OPT_HELP:
163 opt_help(pkeyutl_options);
164 ret = 0;
165 goto end;
166 case OPT_IN:
167 infile = opt_arg();
168 break;
169 case OPT_OUT:
170 outfile = opt_arg();
171 break;
172 case OPT_SECOUT:
173 secoutfile = opt_arg();
174 break;
175 case OPT_SIGFILE:
176 sigfile = opt_arg();
177 break;
178 case OPT_ENGINE_IMPL:
179 engine_impl = 1;
180 break;
181 case OPT_INKEY:
182 inkey = opt_arg();
183 break;
184 case OPT_PEERKEY:
185 peerkey = opt_arg();
186 break;
187 case OPT_PASSIN:
188 passinarg = opt_arg();
189 break;
190 case OPT_PEERFORM:
191 if (!opt_format(opt_arg(), OPT_FMT_ANY, &peerform))
192 goto opthelp;
193 break;
194 case OPT_KEYFORM:
195 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
196 goto opthelp;
197 break;
198 case OPT_R_CASES:
199 if (!opt_rand(o))
200 goto end;
201 break;
202 case OPT_CONFIG:
203 conf = app_load_config_modules(opt_arg());
204 if (conf == NULL)
205 goto end;
206 break;
207 case OPT_PROV_CASES:
208 if (!opt_provider(o))
209 goto end;
210 break;
211 case OPT_ENGINE:
212 e = setup_engine(opt_arg(), 0);
213 break;
214 case OPT_PUBIN:
215 key_type = KEY_PUBKEY;
216 break;
217 case OPT_CERTIN:
218 key_type = KEY_CERT;
219 break;
220 case OPT_ASN1PARSE:
221 asn1parse = 1;
222 break;
223 case OPT_HEXDUMP:
224 hexdump = 1;
225 break;
226 case OPT_SIGN:
227 pkey_op = EVP_PKEY_OP_SIGN;
228 break;
229 case OPT_VERIFY:
230 pkey_op = EVP_PKEY_OP_VERIFY;
231 break;
232 case OPT_VERIFYRECOVER:
233 pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
234 break;
235 case OPT_ENCRYPT:
236 pkey_op = EVP_PKEY_OP_ENCRYPT;
237 break;
238 case OPT_DECRYPT:
239 pkey_op = EVP_PKEY_OP_DECRYPT;
240 break;
241 case OPT_DERIVE:
242 pkey_op = EVP_PKEY_OP_DERIVE;
243 break;
244 case OPT_DECAP:
245 pkey_op = EVP_PKEY_OP_DECAPSULATE;
246 break;
247 case OPT_ENCAP:
248 key_type = KEY_PUBKEY;
249 pkey_op = EVP_PKEY_OP_ENCAPSULATE;
250 break;
251 case OPT_KEMOP:
252 kemop = opt_arg();
253 break;
254 case OPT_KDF:
255 pkey_op = EVP_PKEY_OP_DERIVE;
256 key_type = KEY_NONE;
257 kdfalg = opt_arg();
258 break;
259 case OPT_KDFLEN:
260 kdflen = atoi(opt_arg());
261 break;
262 case OPT_REV:
263 rev = 1;
264 break;
265 case OPT_PKEYOPT:
266 if ((pkeyopts == NULL &&
267 (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
268 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
269 BIO_puts(bio_err, "out of memory\n");
270 goto end;
271 }
272 break;
273 case OPT_PKEYOPT_PASSIN:
274 if ((pkeyopts_passin == NULL &&
275 (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
276 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
277 BIO_puts(bio_err, "out of memory\n");
278 goto end;
279 }
280 break;
281 case OPT_RAWIN:
282 rawin = 1;
283 break;
284 case OPT_DIGEST:
285 digestname = opt_arg();
286 break;
287 }
288 }
289
290 /* No extra arguments. */
291 if (!opt_check_rest_arg(NULL))
292 goto opthelp;
293
294 if (!app_RAND_load())
295 goto end;
296
297 if (digestname != NULL)
298 rawin = 1;
299
300 if (kdfalg != NULL) {
301 if (kdflen == 0) {
302 BIO_printf(bio_err,
303 "%s: no KDF length given (-kdflen parameter).\n", prog);
304 goto opthelp;
305 }
306 } else if (inkey == NULL) {
307 BIO_printf(bio_err,
308 "%s: no private key given (-inkey parameter).\n", prog);
309 goto opthelp;
310 } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
311 BIO_printf(bio_err,
312 "%s: -peerkey option not allowed without -derive.\n", prog);
313 goto opthelp;
314 } else if (peerkey == NULL && pkey_op == EVP_PKEY_OP_DERIVE) {
315 BIO_printf(bio_err,
316 "%s: missing -peerkey option for -derive operation.\n", prog);
317 goto opthelp;
318 }
319
320 pkey = get_pkey(kdfalg, inkey, keyform, key_type, passinarg, pkey_op, e);
321 if (key_type != KEY_NONE && pkey == NULL) {
322 BIO_printf(bio_err, "%s: Error loading key\n", prog);
323 goto end;
324 }
325
326 if (pkey_op == EVP_PKEY_OP_VERIFYRECOVER && !EVP_PKEY_is_a(pkey, "RSA")) {
327 BIO_printf(bio_err, "%s: -verifyrecover can be used only with RSA\n", prog);
328 goto end;
329 }
330
331 if (pkey_op == EVP_PKEY_OP_SIGN || pkey_op == EVP_PKEY_OP_VERIFY) {
332 if (only_nomd(pkey)) {
333 if (digestname != NULL) {
334 const char *alg = EVP_PKEY_get0_type_name(pkey);
335
336 BIO_printf(bio_err,
337 "%s: -digest (prehash) is not supported with %s\n",
338 prog, alg != NULL ? alg : "(unknown key type)");
339 goto end;
340 }
341 rawin = 1;
342 }
343 } else if (digestname != NULL || rawin) {
344 BIO_printf(bio_err,
345 "%s: -digest and -rawin can only be used with -sign or -verify\n", prog);
346 goto opthelp;
347 }
348
349 if (rawin && rev) {
350 BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n", prog);
351 goto opthelp;
352 }
353
354 if (rawin) {
355 if ((mctx = EVP_MD_CTX_new()) == NULL) {
356 BIO_printf(bio_err, "Error: out of memory\n");
357 goto end;
358 }
359 }
360 ctx = init_ctx(kdfalg, &keysize, pkey_op, e, engine_impl, rawin, pkey,
361 mctx, digestname, kemop, libctx, app_get0_propq());
362 if (ctx == NULL) {
363 BIO_printf(bio_err, "%s: Error initializing context\n", prog);
364 goto end;
365 }
366 if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
367 BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
368 goto end;
369 }
370 if (pkeyopts != NULL) {
371 int num = sk_OPENSSL_STRING_num(pkeyopts);
372 int i;
373
374 for (i = 0; i < num; ++i) {
375 const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
376
377 if (pkey_ctrl_string(ctx, opt) <= 0) {
378 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
379 prog, opt);
380 goto end;
381 }
382 }
383 }
384 if (pkeyopts_passin != NULL) {
385 int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
386 int i;
387
388 for (i = 0; i < num; i++) {
389 char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
390 char *passin = strchr(opt, ':');
391 char *passwd;
392
393 if (passin == NULL) {
394 /* Get password interactively */
395 char passwd_buf[4096];
396 int r;
397
398 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
399 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
400 passwd_buf, 0);
401 if (r < 0) {
402 if (r == -2)
403 BIO_puts(bio_err, "user abort\n");
404 else
405 BIO_puts(bio_err, "entry failed\n");
406 goto end;
407 }
408 passwd = OPENSSL_strdup(passwd_buf);
409 if (passwd == NULL) {
410 BIO_puts(bio_err, "out of memory\n");
411 goto end;
412 }
413 } else {
414 /*
415 * Get password as a passin argument: First split option name
416 * and passphrase argument into two strings
417 */
418 *passin = 0;
419 passin++;
420 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
421 BIO_printf(bio_err, "failed to get '%s'\n", opt);
422 goto end;
423 }
424 }
425
426 if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
427 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
428 prog, opt);
429 OPENSSL_free(passwd);
430 goto end;
431 }
432 OPENSSL_free(passwd);
433 }
434 }
435
436 if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
437 BIO_printf(bio_err,
438 "%s: Signature file specified for non verify\n", prog);
439 goto end;
440 }
441
442 if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
443 BIO_printf(bio_err,
444 "%s: No signature file specified for verify\n", prog);
445 goto end;
446 }
447
448 if (pkey_op != EVP_PKEY_OP_DERIVE && pkey_op != EVP_PKEY_OP_ENCAPSULATE) {
449 in = bio_open_default(infile, 'r', FORMAT_BINARY);
450 if (infile != NULL) {
451 struct stat st;
452
453 if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
454 filesize = (int)st.st_size;
455 }
456 if (in == NULL)
457 goto end;
458 }
459 if (pkey_op == EVP_PKEY_OP_DECAPSULATE && outfile != NULL) {
460 if (secoutfile != NULL) {
461 BIO_printf(bio_err, "%s: Decapsulation produces only a shared "
462 "secret and no output. The '-out' option "
463 "is not applicable.\n", prog);
464 goto end;
465 }
466 if ((out = bio_open_owner(outfile, 'w', FORMAT_BINARY)) == NULL)
467 goto end;
468 } else {
469 out = bio_open_default(outfile, 'w', FORMAT_BINARY);
470 if (out == NULL)
471 goto end;
472 }
473
474 if (pkey_op == EVP_PKEY_OP_ENCAPSULATE
475 || pkey_op == EVP_PKEY_OP_DECAPSULATE) {
476 if (secoutfile == NULL && pkey_op == EVP_PKEY_OP_ENCAPSULATE) {
477 BIO_printf(bio_err, "KEM-based shared-secret derivation requires "
478 "the '-secret <file>' option\n");
479 goto end;
480 }
481 /* For backwards compatibility, default decap secrets to the output */
482 if (secoutfile != NULL
483 && (secout = bio_open_owner(secoutfile, 'w', FORMAT_BINARY)) == NULL)
484 goto end;
485 }
486
487 if (sigfile != NULL) {
488 BIO *sigbio = BIO_new_file(sigfile, "rb");
489
490 if (sigbio == NULL) {
491 BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
492 goto end;
493 }
494 siglen = bio_to_mem(&sig, keysize * 10, sigbio);
495 BIO_free(sigbio);
496 if (siglen < 0) {
497 BIO_printf(bio_err, "Error reading signature data\n");
498 goto end;
499 }
500 }
501
502 /* Raw input data is handled elsewhere */
503 if (in != NULL && !rawin) {
504 /* Read the input data */
505 buf_inlen = bio_to_mem(&buf_in, -1, in);
506 if (buf_inlen < 0) {
507 BIO_printf(bio_err, "Error reading input Data\n");
508 goto end;
509 }
510 if (rev) {
511 size_t i;
512 unsigned char ctmp;
513 size_t l = (size_t)buf_inlen;
514
515 for (i = 0; i < l / 2; i++) {
516 ctmp = buf_in[i];
517 buf_in[i] = buf_in[l - 1 - i];
518 buf_in[l - 1 - i] = ctmp;
519 }
520 }
521 }
522
523 /* Sanity check the input if the input is not raw */
524 if (!rawin
525 && (pkey_op == EVP_PKEY_OP_SIGN || pkey_op == EVP_PKEY_OP_VERIFY)) {
526 if (buf_inlen > EVP_MAX_MD_SIZE) {
527 BIO_printf(bio_err,
528 "Error: The non-raw input data length %d is too long - max supported hashed size is %d\n",
529 buf_inlen, EVP_MAX_MD_SIZE);
530 goto end;
531 }
532 }
533
534 if (pkey_op == EVP_PKEY_OP_VERIFY) {
535 if (rawin) {
536 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, sig, siglen,
537 NULL, 0);
538 } else {
539 rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
540 buf_in, (size_t)buf_inlen);
541 }
542 if (rv == 1) {
543 BIO_puts(out, "Signature Verified Successfully\n");
544 ret = 0;
545 } else {
546 BIO_puts(out, "Signature Verification Failure\n");
547 }
548 goto end;
549 }
550 if (rawin) {
551 /* rawin allocates the buffer in do_raw_keyop() */
552 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
553 &buf_out, (size_t *)&buf_outlen);
554 } else {
555 if (kdflen != 0) {
556 buf_outlen = kdflen;
557 rv = 1;
558 } else {
559 rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
560 buf_in, (size_t)buf_inlen, NULL, (size_t *)&secretlen);
561 }
562 if (rv > 0
563 && (secretlen > 0 || (pkey_op != EVP_PKEY_OP_ENCAPSULATE
564 && pkey_op != EVP_PKEY_OP_DECAPSULATE))
565 && (buf_outlen > 0 || pkey_op == EVP_PKEY_OP_DECAPSULATE)) {
566 if (buf_outlen > 0)
567 buf_out = app_malloc(buf_outlen, "buffer output");
568 if (secretlen > 0)
569 secret = app_malloc(secretlen, "secret output");
570 rv = do_keyop(ctx, pkey_op,
571 buf_out, (size_t *)&buf_outlen,
572 buf_in, (size_t)buf_inlen, secret, (size_t *)&secretlen);
573 }
574 }
575 if (rv <= 0) {
576 if (pkey_op != EVP_PKEY_OP_DERIVE) {
577 BIO_puts(bio_err, "Public Key operation error\n");
578 } else {
579 BIO_puts(bio_err, "Key derivation failed\n");
580 }
581 goto end;
582 }
583 ret = 0;
584
585 if (asn1parse) {
586 if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
587 ERR_print_errors(bio_err); /* but still return success */
588 } else if (hexdump) {
589 BIO_dump(out, (char *)buf_out, buf_outlen);
590 } else {
591 BIO_write(out, buf_out, buf_outlen);
592 }
593 /* Backwards compatible decap output fallback */
594 if (secretlen > 0)
595 BIO_write(secout ? secout : out, secret, secretlen);
596
597 end:
598 if (ret != 0)
599 ERR_print_errors(bio_err);
600 EVP_MD_CTX_free(mctx);
601 EVP_PKEY_CTX_free(ctx);
602 EVP_PKEY_free(pkey);
603 EVP_MD_free(md);
604 release_engine(e);
605 BIO_free(in);
606 BIO_free_all(out);
607 BIO_free_all(secout);
608 OPENSSL_free(buf_in);
609 OPENSSL_free(buf_out);
610 OPENSSL_free(sig);
611 OPENSSL_free(secret);
612 sk_OPENSSL_STRING_free(pkeyopts);
613 sk_OPENSSL_STRING_free(pkeyopts_passin);
614 NCONF_free(conf);
615 return ret;
616 }
617
get_pkey(const char * kdfalg,const char * keyfile,int keyform,int key_type,char * passinarg,int pkey_op,ENGINE * e)618 static EVP_PKEY *get_pkey(const char *kdfalg,
619 const char *keyfile, int keyform, int key_type,
620 char *passinarg, int pkey_op, ENGINE *e)
621 {
622 EVP_PKEY *pkey = NULL;
623 char *passin = NULL;
624 X509 *x;
625
626 if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
627 || (pkey_op == EVP_PKEY_OP_DERIVE))
628 && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
629 BIO_printf(bio_err, "A private key is needed for this operation\n");
630 return NULL;
631 }
632 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
633 BIO_printf(bio_err, "Error getting password\n");
634 return NULL;
635 }
636 switch (key_type) {
637 case KEY_PRIVKEY:
638 pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
639 break;
640
641 case KEY_PUBKEY:
642 pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
643 break;
644
645 case KEY_CERT:
646 x = load_cert(keyfile, keyform, "Certificate");
647 if (x) {
648 pkey = X509_get_pubkey(x);
649 X509_free(x);
650 }
651 break;
652
653 case KEY_NONE:
654 break;
655
656 }
657 OPENSSL_free(passin);
658 return pkey;
659 }
660
init_ctx(const char * kdfalg,int * pkeysize,int pkey_op,ENGINE * e,const int engine_impl,int rawin,EVP_PKEY * pkey,EVP_MD_CTX * mctx,const char * digestname,const char * kemop,OSSL_LIB_CTX * libctx,const char * propq)661 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
662 int pkey_op, ENGINE *e,
663 const int engine_impl, int rawin,
664 EVP_PKEY *pkey /* ownership is passed to ctx */,
665 EVP_MD_CTX *mctx, const char *digestname,
666 const char *kemop, OSSL_LIB_CTX *libctx, const char *propq)
667 {
668 EVP_PKEY_CTX *ctx = NULL;
669 ENGINE *impl = NULL;
670 int rv = -1;
671
672 #ifndef OPENSSL_NO_ENGINE
673 if (engine_impl)
674 impl = e;
675 #endif
676
677 if (kdfalg != NULL) {
678 int kdfnid = OBJ_sn2nid(kdfalg);
679
680 if (kdfnid == NID_undef) {
681 kdfnid = OBJ_ln2nid(kdfalg);
682 if (kdfnid == NID_undef) {
683 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
684 kdfalg);
685 return NULL;
686 }
687 }
688 if (impl != NULL)
689 ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
690 else
691 ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
692 } else {
693 if (pkey == NULL)
694 return NULL;
695
696 *pkeysize = EVP_PKEY_get_size(pkey);
697 if (impl != NULL)
698 ctx = EVP_PKEY_CTX_new(pkey, impl);
699 else
700 ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
701 }
702
703 if (ctx == NULL)
704 return NULL;
705
706 if (rawin) {
707 EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
708
709 switch (pkey_op) {
710 case EVP_PKEY_OP_SIGN:
711 rv = EVP_DigestSignInit_ex(mctx, NULL, digestname, libctx, propq,
712 pkey, NULL);
713 break;
714
715 case EVP_PKEY_OP_VERIFY:
716 rv = EVP_DigestVerifyInit_ex(mctx, NULL, digestname, libctx, propq,
717 pkey, NULL);
718 break;
719 }
720
721 } else {
722 switch (pkey_op) {
723 case EVP_PKEY_OP_SIGN:
724 rv = EVP_PKEY_sign_init(ctx);
725 break;
726
727 case EVP_PKEY_OP_VERIFY:
728 rv = EVP_PKEY_verify_init(ctx);
729 break;
730
731 case EVP_PKEY_OP_VERIFYRECOVER:
732 rv = EVP_PKEY_verify_recover_init(ctx);
733 break;
734
735 case EVP_PKEY_OP_ENCRYPT:
736 rv = EVP_PKEY_encrypt_init(ctx);
737 break;
738
739 case EVP_PKEY_OP_DECRYPT:
740 rv = EVP_PKEY_decrypt_init(ctx);
741 break;
742
743 case EVP_PKEY_OP_DERIVE:
744 rv = EVP_PKEY_derive_init(ctx);
745 break;
746
747 case EVP_PKEY_OP_ENCAPSULATE:
748 rv = EVP_PKEY_encapsulate_init(ctx, NULL);
749 if (rv > 0 && kemop != NULL)
750 rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
751 break;
752
753 case EVP_PKEY_OP_DECAPSULATE:
754 rv = EVP_PKEY_decapsulate_init(ctx, NULL);
755 if (rv > 0 && kemop != NULL)
756 rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
757 break;
758 }
759 }
760
761 if (rv <= 0) {
762 EVP_PKEY_CTX_free(ctx);
763 ctx = NULL;
764 }
765
766 return ctx;
767 }
768
setup_peer(EVP_PKEY_CTX * ctx,int peerform,const char * file,ENGINE * e)769 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
770 ENGINE *e)
771 {
772 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
773 EVP_PKEY *peer = NULL;
774 ENGINE *engine = NULL;
775 int ret = 1;
776
777 if (peerform == FORMAT_ENGINE)
778 engine = e;
779 peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
780 if (peer == NULL) {
781 BIO_printf(bio_err, "Error reading peer key %s\n", file);
782 return 0;
783 }
784 if (strcmp(EVP_PKEY_get0_type_name(peer), EVP_PKEY_get0_type_name(pkey)) != 0) {
785 BIO_printf(bio_err,
786 "Type of peer public key: %s does not match type of private key: %s\n",
787 EVP_PKEY_get0_type_name(peer), EVP_PKEY_get0_type_name(pkey));
788 ret = 0;
789 } else {
790 ret = EVP_PKEY_derive_set_peer(ctx, peer) > 0;
791 }
792
793 EVP_PKEY_free(peer);
794 return ret;
795 }
796
do_keyop(EVP_PKEY_CTX * ctx,int pkey_op,unsigned char * out,size_t * poutlen,const unsigned char * in,size_t inlen,unsigned char * secret,size_t * pseclen)797 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
798 unsigned char *out, size_t *poutlen,
799 const unsigned char *in, size_t inlen,
800 unsigned char *secret, size_t *pseclen)
801 {
802 int rv = 0;
803
804 switch (pkey_op) {
805 case EVP_PKEY_OP_VERIFYRECOVER:
806 rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
807 break;
808
809 case EVP_PKEY_OP_SIGN:
810 rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
811 break;
812
813 case EVP_PKEY_OP_ENCRYPT:
814 rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
815 break;
816
817 case EVP_PKEY_OP_DECRYPT:
818 rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
819 break;
820
821 case EVP_PKEY_OP_DERIVE:
822 rv = EVP_PKEY_derive(ctx, out, poutlen);
823 break;
824
825 case EVP_PKEY_OP_ENCAPSULATE:
826 rv = EVP_PKEY_encapsulate(ctx, out, poutlen, secret, pseclen);
827 break;
828
829 case EVP_PKEY_OP_DECAPSULATE:
830 rv = EVP_PKEY_decapsulate(ctx, secret, pseclen, in, inlen);
831 break;
832
833 }
834 return rv;
835 }
836
837 #define TBUF_MAXSIZE 2048
838
do_raw_keyop(int pkey_op,EVP_MD_CTX * mctx,EVP_PKEY * pkey,BIO * in,int filesize,unsigned char * sig,int siglen,unsigned char ** out,size_t * poutlen)839 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
840 EVP_PKEY *pkey, BIO *in,
841 int filesize, unsigned char *sig, int siglen,
842 unsigned char **out, size_t *poutlen)
843 {
844 int rv = 0;
845 unsigned char tbuf[TBUF_MAXSIZE];
846 unsigned char *mbuf = NULL;
847 int buf_len = 0;
848
849 /* Some algorithms only support oneshot digests */
850 if (only_nomd(pkey)) {
851 if (filesize < 0) {
852 BIO_printf(bio_err,
853 "Error: unable to determine file size for oneshot operation\n");
854 goto end;
855 }
856 mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
857 switch (pkey_op) {
858 case EVP_PKEY_OP_VERIFY:
859 buf_len = BIO_read(in, mbuf, filesize);
860 if (buf_len != filesize) {
861 BIO_printf(bio_err, "Error reading raw input data\n");
862 goto end;
863 }
864 rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
865 break;
866 case EVP_PKEY_OP_SIGN:
867 buf_len = BIO_read(in, mbuf, filesize);
868 if (buf_len != filesize) {
869 BIO_printf(bio_err, "Error reading raw input data\n");
870 goto end;
871 }
872 rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
873 if (rv == 1 && out != NULL) {
874 *out = app_malloc(*poutlen, "buffer output");
875 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
876 }
877 break;
878 }
879 goto end;
880 }
881
882 switch (pkey_op) {
883 case EVP_PKEY_OP_VERIFY:
884 for (;;) {
885 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
886 if (buf_len == 0)
887 break;
888 if (buf_len < 0) {
889 BIO_printf(bio_err, "Error reading raw input data\n");
890 goto end;
891 }
892 rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
893 if (rv != 1) {
894 BIO_printf(bio_err, "Error verifying raw input data\n");
895 goto end;
896 }
897 }
898 rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
899 break;
900 case EVP_PKEY_OP_SIGN:
901 for (;;) {
902 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
903 if (buf_len == 0)
904 break;
905 if (buf_len < 0) {
906 BIO_printf(bio_err, "Error reading raw input data\n");
907 goto end;
908 }
909 rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
910 if (rv != 1) {
911 BIO_printf(bio_err, "Error signing raw input data\n");
912 goto end;
913 }
914 }
915 rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
916 if (rv == 1 && out != NULL) {
917 *out = app_malloc(*poutlen, "buffer output");
918 rv = EVP_DigestSignFinal(mctx, *out, poutlen);
919 }
920 break;
921 }
922
923 end:
924 OPENSSL_free(mbuf);
925 return rv;
926 }
927