1 /*
2 * Copyright 2006-2024 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_rawin(const EVP_PKEY * pkey)46 static int only_rawin(const EVP_PKEY *pkey)
47 {
48 if (pkey == NULL)
49 return 0;
50 return EVP_PKEY_is_a(pkey, "ED25519")
51 || EVP_PKEY_is_a(pkey, "ED448");
52 }
53
54 typedef enum OPTION_choice {
55 OPT_COMMON,
56 OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
57 OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
58 OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
59 OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
60 OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
61 OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
62 OPT_DECAP, OPT_ENCAP, OPT_SECOUT, OPT_KEMOP,
63 OPT_CONFIG,
64 OPT_RAWIN, OPT_DIGEST
65 } OPTION_CHOICE;
66
67 const OPTIONS pkeyutl_options[] = {
68 OPT_SECTION("General"),
69 {"help", OPT_HELP, '-', "Display this summary"},
70 #ifndef OPENSSL_NO_ENGINE
71 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
72 {"engine_impl", OPT_ENGINE_IMPL, '-',
73 "Also use engine given by -engine for crypto operations"},
74 #endif
75 {"sign", OPT_SIGN, '-', "Sign input data with private key"},
76 {"verify", OPT_VERIFY, '-', "Verify with public key"},
77 {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
78 {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
79 {"derive", OPT_DERIVE, '-', "Derive shared secret"},
80 {"decap", OPT_DECAP, '-', "Decapsulate shared secret"},
81 {"encap", OPT_ENCAP, '-', "Encapsulate shared secret"},
82 OPT_CONFIG_OPTION,
83
84 OPT_SECTION("Input"),
85 {"in", OPT_IN, '<', "Input file - default stdin"},
86 {"inkey", OPT_INKEY, 's', "Input key, by default private key"},
87 {"pubin", OPT_PUBIN, '-', "Input key is a public key"},
88 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
89 {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
90 {"peerform", OPT_PEERFORM, 'E', "Peer key format (DER/PEM/P12/ENGINE)"},
91 {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
92 {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
93 {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
94 {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
95
96 OPT_SECTION("Output"),
97 {"out", OPT_OUT, '>', "Output file - default stdout"},
98 {"secret", OPT_SECOUT, '>', "File to store secret on encapsulation"},
99 {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
100 {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
101 {"verifyrecover", OPT_VERIFYRECOVER, '-',
102 "Verify with public key, recover original data"},
103
104 OPT_SECTION("Signing/Derivation/Encapsulation"),
105 {"rawin", OPT_RAWIN, '-',
106 "Indicate that the signature/verification input data is not yet hashed"},
107 {"digest", OPT_DIGEST, 's',
108 "The digest algorithm to use for signing/verifying raw input data. Implies -rawin"},
109 {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
110 {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
111 "Public key option that is read as a passphrase argument opt:passphrase"},
112 {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
113 {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
114 {"kemop", OPT_KEMOP, 's', "KEM operation specific to the key algorithm"},
115
116 OPT_R_OPTIONS,
117 OPT_PROV_OPTIONS,
118 {NULL}
119 };
120
pkeyutl_main(int argc,char ** argv)121 int pkeyutl_main(int argc, char **argv)
122 {
123 CONF *conf = NULL;
124 BIO *in = NULL, *out = NULL, *secout = NULL;
125 ENGINE *e = NULL;
126 EVP_PKEY_CTX *ctx = NULL;
127 EVP_PKEY *pkey = NULL;
128 char *infile = NULL, *outfile = NULL, *secoutfile = NULL, *sigfile = NULL, *passinarg = NULL;
129 char hexdump = 0, asn1parse = 0, rev = 0, *prog;
130 unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL, *secret = NULL;
131 OPTION_CHOICE o;
132 int buf_inlen = 0, siglen = -1;
133 int keyform = FORMAT_UNDEF, peerform = FORMAT_UNDEF;
134 int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
135 int engine_impl = 0;
136 int ret = 1, rv = -1;
137 size_t buf_outlen = 0, secretlen = 0;
138 const char *inkey = NULL;
139 const char *peerkey = NULL;
140 const char *kdfalg = NULL, *digestname = NULL, *kemop = NULL;
141 int kdflen = 0;
142 STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
143 STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
144 int rawin = 0;
145 EVP_MD_CTX *mctx = NULL;
146 EVP_MD *md = NULL;
147 int filesize = -1;
148 OSSL_LIB_CTX *libctx = app_get0_libctx();
149
150 prog = opt_init(argc, argv, pkeyutl_options);
151 while ((o = opt_next()) != OPT_EOF) {
152 switch (o) {
153 case OPT_EOF:
154 case OPT_ERR:
155 opthelp:
156 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
157 goto end;
158 case OPT_HELP:
159 opt_help(pkeyutl_options);
160 ret = 0;
161 goto end;
162 case OPT_IN:
163 infile = opt_arg();
164 break;
165 case OPT_OUT:
166 outfile = opt_arg();
167 break;
168 case OPT_SECOUT:
169 secoutfile = opt_arg();
170 break;
171 case OPT_SIGFILE:
172 sigfile = opt_arg();
173 break;
174 case OPT_ENGINE_IMPL:
175 engine_impl = 1;
176 break;
177 case OPT_INKEY:
178 inkey = opt_arg();
179 break;
180 case OPT_PEERKEY:
181 peerkey = opt_arg();
182 break;
183 case OPT_PASSIN:
184 passinarg = opt_arg();
185 break;
186 case OPT_PEERFORM:
187 if (!opt_format(opt_arg(), OPT_FMT_ANY, &peerform))
188 goto opthelp;
189 break;
190 case OPT_KEYFORM:
191 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
192 goto opthelp;
193 break;
194 case OPT_R_CASES:
195 if (!opt_rand(o))
196 goto end;
197 break;
198 case OPT_CONFIG:
199 conf = app_load_config_modules(opt_arg());
200 if (conf == NULL)
201 goto end;
202 break;
203 case OPT_PROV_CASES:
204 if (!opt_provider(o))
205 goto end;
206 break;
207 case OPT_ENGINE:
208 e = setup_engine(opt_arg(), 0);
209 break;
210 case OPT_PUBIN:
211 key_type = KEY_PUBKEY;
212 break;
213 case OPT_CERTIN:
214 key_type = KEY_CERT;
215 break;
216 case OPT_ASN1PARSE:
217 asn1parse = 1;
218 break;
219 case OPT_HEXDUMP:
220 hexdump = 1;
221 break;
222 case OPT_SIGN:
223 pkey_op = EVP_PKEY_OP_SIGN;
224 break;
225 case OPT_VERIFY:
226 pkey_op = EVP_PKEY_OP_VERIFY;
227 break;
228 case OPT_VERIFYRECOVER:
229 pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
230 break;
231 case OPT_ENCRYPT:
232 pkey_op = EVP_PKEY_OP_ENCRYPT;
233 break;
234 case OPT_DECRYPT:
235 pkey_op = EVP_PKEY_OP_DECRYPT;
236 break;
237 case OPT_DERIVE:
238 pkey_op = EVP_PKEY_OP_DERIVE;
239 break;
240 case OPT_DECAP:
241 pkey_op = EVP_PKEY_OP_DECAPSULATE;
242 break;
243 case OPT_ENCAP:
244 pkey_op = EVP_PKEY_OP_ENCAPSULATE;
245 break;
246 case OPT_KEMOP:
247 kemop = opt_arg();
248 break;
249 case OPT_KDF:
250 pkey_op = EVP_PKEY_OP_DERIVE;
251 key_type = KEY_NONE;
252 kdfalg = opt_arg();
253 break;
254 case OPT_KDFLEN:
255 kdflen = atoi(opt_arg());
256 break;
257 case OPT_REV:
258 rev = 1;
259 break;
260 case OPT_PKEYOPT:
261 if ((pkeyopts == NULL &&
262 (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
263 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
264 BIO_puts(bio_err, "out of memory\n");
265 goto end;
266 }
267 break;
268 case OPT_PKEYOPT_PASSIN:
269 if ((pkeyopts_passin == NULL &&
270 (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
271 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
272 BIO_puts(bio_err, "out of memory\n");
273 goto end;
274 }
275 break;
276 case OPT_RAWIN:
277 rawin = 1;
278 break;
279 case OPT_DIGEST:
280 digestname = opt_arg();
281 break;
282 }
283 }
284
285 /* No extra arguments. */
286 if (!opt_check_rest_arg(NULL))
287 goto opthelp;
288
289 if (!app_RAND_load())
290 goto end;
291
292 if (digestname != NULL)
293 rawin = 1;
294
295 if (kdfalg != NULL) {
296 if (kdflen == 0) {
297 BIO_printf(bio_err,
298 "%s: no KDF length given (-kdflen parameter).\n", prog);
299 goto opthelp;
300 }
301 } else if (inkey == NULL) {
302 BIO_printf(bio_err,
303 "%s: no private key given (-inkey parameter).\n", prog);
304 goto opthelp;
305 } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
306 BIO_printf(bio_err,
307 "%s: no peer key given (-peerkey parameter).\n", prog);
308 goto opthelp;
309 }
310
311 pkey = get_pkey(kdfalg, inkey, keyform, key_type, passinarg, pkey_op, e);
312 if (pkey_op == EVP_PKEY_OP_SIGN || pkey_op == EVP_PKEY_OP_VERIFY) {
313 if (only_rawin(pkey)) {
314 if ((EVP_PKEY_is_a(pkey, "ED25519") || EVP_PKEY_is_a(pkey, "ED448"))
315 && digestname != NULL) {
316 BIO_printf(bio_err,
317 "%s: -digest (prehash) is not supported with EdDSA\n", prog);
318 EVP_PKEY_free(pkey);
319 goto end;
320 }
321 rawin = 1; /* implied for Ed25519(ph) and Ed448(ph) and maybe others in the future */
322 }
323 } else if (digestname != NULL || rawin) {
324 BIO_printf(bio_err,
325 "%s: -digest and -rawin can only be used with -sign or -verify\n", prog);
326 EVP_PKEY_free(pkey);
327 goto opthelp;
328 }
329
330 if (rawin && rev) {
331 BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n", prog);
332 EVP_PKEY_free(pkey);
333 goto opthelp;
334 }
335
336 if (rawin) {
337 if ((mctx = EVP_MD_CTX_new()) == NULL) {
338 BIO_printf(bio_err, "Error: out of memory\n");
339 EVP_PKEY_free(pkey);
340 goto end;
341 }
342 }
343 ctx = init_ctx(kdfalg, &keysize, pkey_op, e, engine_impl, rawin, pkey,
344 mctx, digestname, kemop, libctx, app_get0_propq());
345 if (ctx == NULL) {
346 BIO_printf(bio_err, "%s: Error initializing context\n", prog);
347 goto end;
348 }
349 if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
350 BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
351 goto end;
352 }
353 if (pkeyopts != NULL) {
354 int num = sk_OPENSSL_STRING_num(pkeyopts);
355 int i;
356
357 for (i = 0; i < num; ++i) {
358 const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
359
360 if (pkey_ctrl_string(ctx, opt) <= 0) {
361 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
362 prog, opt);
363 goto end;
364 }
365 }
366 }
367 if (pkeyopts_passin != NULL) {
368 int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
369 int i;
370
371 for (i = 0; i < num; i++) {
372 char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
373 char *passin = strchr(opt, ':');
374 char *passwd;
375
376 if (passin == NULL) {
377 /* Get password interactively */
378 char passwd_buf[4096];
379 int r;
380
381 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
382 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
383 passwd_buf, 0);
384 if (r < 0) {
385 if (r == -2)
386 BIO_puts(bio_err, "user abort\n");
387 else
388 BIO_puts(bio_err, "entry failed\n");
389 goto end;
390 }
391 passwd = OPENSSL_strdup(passwd_buf);
392 if (passwd == NULL) {
393 BIO_puts(bio_err, "out of memory\n");
394 goto end;
395 }
396 } else {
397 /*
398 * Get password as a passin argument: First split option name
399 * and passphrase argument into two strings
400 */
401 *passin = 0;
402 passin++;
403 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
404 BIO_printf(bio_err, "failed to get '%s'\n", opt);
405 goto end;
406 }
407 }
408
409 if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
410 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
411 prog, opt);
412 goto end;
413 }
414 OPENSSL_free(passwd);
415 }
416 }
417
418 if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
419 BIO_printf(bio_err,
420 "%s: Signature file specified for non verify\n", prog);
421 goto end;
422 }
423
424 if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
425 BIO_printf(bio_err,
426 "%s: No signature file specified for verify\n", prog);
427 goto end;
428 }
429
430 if (pkey_op != EVP_PKEY_OP_DERIVE && pkey_op != EVP_PKEY_OP_ENCAPSULATE) {
431 in = bio_open_default(infile, 'r', FORMAT_BINARY);
432 if (infile != NULL) {
433 struct stat st;
434
435 if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
436 filesize = (int)st.st_size;
437 }
438 if (in == NULL)
439 goto end;
440 }
441 out = bio_open_default(outfile, 'w', FORMAT_BINARY);
442 if (out == NULL)
443 goto end;
444
445 if (pkey_op == EVP_PKEY_OP_ENCAPSULATE) {
446 if (secoutfile == NULL) {
447 BIO_printf(bio_err, "Encapsulation requires '-secret' argument\n");
448 goto end;
449 }
450 secout = bio_open_default(secoutfile, 'w', FORMAT_BINARY);
451 if (secout == NULL)
452 goto end;
453 }
454
455 if (sigfile != NULL) {
456 BIO *sigbio = BIO_new_file(sigfile, "rb");
457
458 if (sigbio == NULL) {
459 BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
460 goto end;
461 }
462 siglen = bio_to_mem(&sig, keysize * 10, sigbio);
463 BIO_free(sigbio);
464 if (siglen < 0) {
465 BIO_printf(bio_err, "Error reading signature data\n");
466 goto end;
467 }
468 }
469
470 /* Raw input data is handled elsewhere */
471 if (in != NULL && !rawin) {
472 /* Read the input data */
473 buf_inlen = bio_to_mem(&buf_in, -1, in);
474 if (buf_inlen < 0) {
475 BIO_printf(bio_err, "Error reading input Data\n");
476 goto end;
477 }
478 if (rev) {
479 size_t i;
480 unsigned char ctmp;
481 size_t l = (size_t)buf_inlen;
482
483 for (i = 0; i < l / 2; i++) {
484 ctmp = buf_in[i];
485 buf_in[i] = buf_in[l - 1 - i];
486 buf_in[l - 1 - i] = ctmp;
487 }
488 }
489 }
490
491 /* Sanity check the input if the input is not raw */
492 if (!rawin
493 && (pkey_op == EVP_PKEY_OP_SIGN || pkey_op == EVP_PKEY_OP_VERIFY
494 || pkey_op == EVP_PKEY_OP_VERIFYRECOVER)) {
495 if (buf_inlen > EVP_MAX_MD_SIZE) {
496 BIO_printf(bio_err,
497 "Error: The non-raw input data length %d is too long - max supported hashed size is %d\n",
498 buf_inlen, EVP_MAX_MD_SIZE);
499 goto end;
500 }
501 }
502
503 if (pkey_op == EVP_PKEY_OP_VERIFY) {
504 if (rawin) {
505 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, sig, siglen,
506 NULL, 0);
507 } else {
508 rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
509 buf_in, (size_t)buf_inlen);
510 }
511 if (rv == 1) {
512 BIO_puts(out, "Signature Verified Successfully\n");
513 ret = 0;
514 } else {
515 BIO_puts(out, "Signature Verification Failure\n");
516 }
517 goto end;
518 }
519 if (rawin) {
520 /* rawin allocates the buffer in do_raw_keyop() */
521 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
522 &buf_out, (size_t *)&buf_outlen);
523 } else {
524 if (kdflen != 0) {
525 buf_outlen = kdflen;
526 rv = 1;
527 } else {
528 rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
529 buf_in, (size_t)buf_inlen, NULL, (size_t *)&secretlen);
530 }
531 if (rv > 0 && buf_outlen != 0) {
532 buf_out = app_malloc(buf_outlen, "buffer output");
533 if (secretlen > 0)
534 secret = app_malloc(secretlen, "secret output");
535 rv = do_keyop(ctx, pkey_op,
536 buf_out, (size_t *)&buf_outlen,
537 buf_in, (size_t)buf_inlen, secret, (size_t *)&secretlen);
538 }
539 }
540 if (rv <= 0) {
541 if (pkey_op != EVP_PKEY_OP_DERIVE) {
542 BIO_puts(bio_err, "Public Key operation error\n");
543 } else {
544 BIO_puts(bio_err, "Key derivation failed\n");
545 }
546 goto end;
547 }
548 ret = 0;
549
550 if (asn1parse) {
551 if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
552 ERR_print_errors(bio_err); /* but still return success */
553 } else if (hexdump) {
554 BIO_dump(out, (char *)buf_out, buf_outlen);
555 } else {
556 BIO_write(out, buf_out, buf_outlen);
557 }
558 if (secretlen > 0)
559 BIO_write(secout, secret, secretlen);
560
561 end:
562 if (ret != 0)
563 ERR_print_errors(bio_err);
564 EVP_MD_CTX_free(mctx);
565 EVP_PKEY_CTX_free(ctx);
566 EVP_MD_free(md);
567 release_engine(e);
568 BIO_free(in);
569 BIO_free_all(out);
570 BIO_free_all(secout);
571 OPENSSL_free(buf_in);
572 OPENSSL_free(buf_out);
573 OPENSSL_free(sig);
574 OPENSSL_free(secret);
575 sk_OPENSSL_STRING_free(pkeyopts);
576 sk_OPENSSL_STRING_free(pkeyopts_passin);
577 NCONF_free(conf);
578 return ret;
579 }
580
get_pkey(const char * kdfalg,const char * keyfile,int keyform,int key_type,char * passinarg,int pkey_op,ENGINE * e)581 static EVP_PKEY *get_pkey(const char *kdfalg,
582 const char *keyfile, int keyform, int key_type,
583 char *passinarg, int pkey_op, ENGINE *e)
584 {
585 EVP_PKEY *pkey = NULL;
586 char *passin = NULL;
587 X509 *x;
588
589 if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
590 || (pkey_op == EVP_PKEY_OP_DERIVE))
591 && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
592 BIO_printf(bio_err, "A private key is needed for this operation\n");
593 return NULL;
594 }
595 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
596 BIO_printf(bio_err, "Error getting password\n");
597 return NULL;
598 }
599 switch (key_type) {
600 case KEY_PRIVKEY:
601 pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
602 break;
603
604 case KEY_PUBKEY:
605 pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
606 break;
607
608 case KEY_CERT:
609 x = load_cert(keyfile, keyform, "Certificate");
610 if (x) {
611 pkey = X509_get_pubkey(x);
612 X509_free(x);
613 }
614 break;
615
616 case KEY_NONE:
617 break;
618
619 }
620 OPENSSL_free(passin);
621 return pkey;
622 }
623
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)624 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
625 int pkey_op, ENGINE *e,
626 const int engine_impl, int rawin,
627 EVP_PKEY *pkey /* ownership is passed to ctx */,
628 EVP_MD_CTX *mctx, const char *digestname,
629 const char *kemop, OSSL_LIB_CTX *libctx, const char *propq)
630 {
631 EVP_PKEY_CTX *ctx = NULL;
632 ENGINE *impl = NULL;
633 int rv = -1;
634
635 #ifndef OPENSSL_NO_ENGINE
636 if (engine_impl)
637 impl = e;
638 #endif
639
640 if (kdfalg != NULL) {
641 int kdfnid = OBJ_sn2nid(kdfalg);
642
643 if (kdfnid == NID_undef) {
644 kdfnid = OBJ_ln2nid(kdfalg);
645 if (kdfnid == NID_undef) {
646 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
647 kdfalg);
648 goto end;
649 }
650 }
651 if (impl != NULL)
652 ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
653 else
654 ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
655 } else {
656 if (pkey == NULL)
657 goto end;
658
659 *pkeysize = EVP_PKEY_get_size(pkey);
660 if (impl != NULL)
661 ctx = EVP_PKEY_CTX_new(pkey, impl);
662 else
663 ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
664 EVP_PKEY_free(pkey);
665 pkey = NULL;
666 }
667
668 if (ctx == NULL)
669 goto end;
670
671 if (rawin) {
672 EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
673
674 switch (pkey_op) {
675 case EVP_PKEY_OP_SIGN:
676 rv = EVP_DigestSignInit_ex(mctx, NULL, digestname, libctx, propq,
677 pkey, NULL);
678 break;
679
680 case EVP_PKEY_OP_VERIFY:
681 rv = EVP_DigestVerifyInit_ex(mctx, NULL, digestname, libctx, propq,
682 pkey, NULL);
683 break;
684 }
685
686 } else {
687 switch (pkey_op) {
688 case EVP_PKEY_OP_SIGN:
689 rv = EVP_PKEY_sign_init(ctx);
690 break;
691
692 case EVP_PKEY_OP_VERIFY:
693 rv = EVP_PKEY_verify_init(ctx);
694 break;
695
696 case EVP_PKEY_OP_VERIFYRECOVER:
697 rv = EVP_PKEY_verify_recover_init(ctx);
698 break;
699
700 case EVP_PKEY_OP_ENCRYPT:
701 rv = EVP_PKEY_encrypt_init(ctx);
702 break;
703
704 case EVP_PKEY_OP_DECRYPT:
705 rv = EVP_PKEY_decrypt_init(ctx);
706 break;
707
708 case EVP_PKEY_OP_DERIVE:
709 rv = EVP_PKEY_derive_init(ctx);
710 break;
711
712 case EVP_PKEY_OP_ENCAPSULATE:
713 rv = EVP_PKEY_encapsulate_init(ctx, NULL);
714 if (rv > 0 && kemop != NULL)
715 rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
716 break;
717
718 case EVP_PKEY_OP_DECAPSULATE:
719 rv = EVP_PKEY_decapsulate_init(ctx, NULL);
720 if (rv > 0 && kemop != NULL)
721 rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
722 break;
723 }
724 }
725
726 if (rv <= 0) {
727 EVP_PKEY_CTX_free(ctx);
728 ctx = NULL;
729 }
730
731 return ctx;
732
733 end:
734 EVP_PKEY_free(pkey);
735 return NULL;
736 }
737
setup_peer(EVP_PKEY_CTX * ctx,int peerform,const char * file,ENGINE * e)738 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
739 ENGINE *e)
740 {
741 EVP_PKEY *peer = NULL;
742 ENGINE *engine = NULL;
743 int ret;
744
745 if (peerform == FORMAT_ENGINE)
746 engine = e;
747 peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
748 if (peer == NULL) {
749 BIO_printf(bio_err, "Error reading peer key %s\n", file);
750 return 0;
751 }
752
753 ret = EVP_PKEY_derive_set_peer(ctx, peer) > 0;
754
755 EVP_PKEY_free(peer);
756 return ret;
757 }
758
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)759 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
760 unsigned char *out, size_t *poutlen,
761 const unsigned char *in, size_t inlen,
762 unsigned char *secret, size_t *pseclen)
763 {
764 int rv = 0;
765
766 switch (pkey_op) {
767 case EVP_PKEY_OP_VERIFYRECOVER:
768 rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
769 break;
770
771 case EVP_PKEY_OP_SIGN:
772 rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
773 break;
774
775 case EVP_PKEY_OP_ENCRYPT:
776 rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
777 break;
778
779 case EVP_PKEY_OP_DECRYPT:
780 rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
781 break;
782
783 case EVP_PKEY_OP_DERIVE:
784 rv = EVP_PKEY_derive(ctx, out, poutlen);
785 break;
786
787 case EVP_PKEY_OP_ENCAPSULATE:
788 rv = EVP_PKEY_encapsulate(ctx, out, poutlen, secret, pseclen);
789 break;
790
791 case EVP_PKEY_OP_DECAPSULATE:
792 rv = EVP_PKEY_decapsulate(ctx, out, poutlen, in, inlen);
793 break;
794
795 }
796 return rv;
797 }
798
799 #define TBUF_MAXSIZE 2048
800
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)801 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
802 EVP_PKEY *pkey, BIO *in,
803 int filesize, unsigned char *sig, int siglen,
804 unsigned char **out, size_t *poutlen)
805 {
806 int rv = 0;
807 unsigned char tbuf[TBUF_MAXSIZE];
808 unsigned char *mbuf = NULL;
809 int buf_len = 0;
810
811 /* Some algorithms only support oneshot digests */
812 if (only_rawin(pkey)) {
813 if (filesize < 0) {
814 BIO_printf(bio_err,
815 "Error: unable to determine file size for oneshot operation\n");
816 goto end;
817 }
818 mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
819 switch (pkey_op) {
820 case EVP_PKEY_OP_VERIFY:
821 buf_len = BIO_read(in, mbuf, filesize);
822 if (buf_len != filesize) {
823 BIO_printf(bio_err, "Error reading raw input data\n");
824 goto end;
825 }
826 rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
827 break;
828 case EVP_PKEY_OP_SIGN:
829 buf_len = BIO_read(in, mbuf, filesize);
830 if (buf_len != filesize) {
831 BIO_printf(bio_err, "Error reading raw input data\n");
832 goto end;
833 }
834 rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
835 if (rv == 1 && out != NULL) {
836 *out = app_malloc(*poutlen, "buffer output");
837 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
838 }
839 break;
840 }
841 goto end;
842 }
843
844 switch (pkey_op) {
845 case EVP_PKEY_OP_VERIFY:
846 for (;;) {
847 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
848 if (buf_len == 0)
849 break;
850 if (buf_len < 0) {
851 BIO_printf(bio_err, "Error reading raw input data\n");
852 goto end;
853 }
854 rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
855 if (rv != 1) {
856 BIO_printf(bio_err, "Error verifying raw input data\n");
857 goto end;
858 }
859 }
860 rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
861 break;
862 case EVP_PKEY_OP_SIGN:
863 for (;;) {
864 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
865 if (buf_len == 0)
866 break;
867 if (buf_len < 0) {
868 BIO_printf(bio_err, "Error reading raw input data\n");
869 goto end;
870 }
871 rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
872 if (rv != 1) {
873 BIO_printf(bio_err, "Error signing raw input data\n");
874 goto end;
875 }
876 }
877 rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
878 if (rv == 1 && out != NULL) {
879 *out = app_malloc(*poutlen, "buffer output");
880 rv = EVP_DigestSignFinal(mctx, *out, poutlen);
881 }
882 break;
883 }
884
885 end:
886 OPENSSL_free(mbuf);
887 return rv;
888 }
889
