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_CTX *init_ctx(const char *kdfalg, int *pkeysize,
24 const char *keyfile, int keyform, int key_type,
25 char *passinarg, int pkey_op, ENGINE *e,
26 const int impl, int rawin, EVP_PKEY **ppkey,
27 EVP_MD_CTX *mctx, const char *digestname, const char *kemop,
28 OSSL_LIB_CTX *libctx, const char *propq);
29
30 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
31 ENGINE *e);
32
33 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
34 unsigned char *out, size_t *poutlen,
35 const unsigned char *in, size_t inlen,
36 unsigned char *secret, size_t *psecretlen);
37
38 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
39 EVP_PKEY *pkey, BIO *in,
40 int filesize, unsigned char *sig, int siglen,
41 unsigned char **out, size_t *poutlen);
42
43 typedef enum OPTION_choice {
44 OPT_COMMON,
45 OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
46 OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
47 OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
48 OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
49 OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
50 OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
51 OPT_DECAP, OPT_ENCAP, OPT_SECOUT, OPT_KEMOP,
52 OPT_CONFIG,
53 OPT_RAWIN, OPT_DIGEST
54 } OPTION_CHOICE;
55
56 const OPTIONS pkeyutl_options[] = {
57 OPT_SECTION("General"),
58 {"help", OPT_HELP, '-', "Display this summary"},
59 #ifndef OPENSSL_NO_ENGINE
60 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
61 {"engine_impl", OPT_ENGINE_IMPL, '-',
62 "Also use engine given by -engine for crypto operations"},
63 #endif
64 {"sign", OPT_SIGN, '-', "Sign input data with private key"},
65 {"verify", OPT_VERIFY, '-', "Verify with public key"},
66 {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
67 {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
68 {"derive", OPT_DERIVE, '-', "Derive shared secret"},
69 {"decap", OPT_DECAP, '-', "Decapsulate shared secret"},
70 {"encap", OPT_ENCAP, '-', "Encapsulate shared secret"},
71 OPT_CONFIG_OPTION,
72
73 OPT_SECTION("Input"),
74 {"in", OPT_IN, '<', "Input file - default stdin"},
75 {"rawin", OPT_RAWIN, '-', "Indicate the input data is in raw form"},
76 {"inkey", OPT_INKEY, 's', "Input key, by default private key"},
77 {"pubin", OPT_PUBIN, '-', "Input key is a public key"},
78 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
79 {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
80 {"peerform", OPT_PEERFORM, 'E', "Peer key format (DER/PEM/P12/ENGINE)"},
81 {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
82 {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
83 {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
84 {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
85
86 OPT_SECTION("Output"),
87 {"out", OPT_OUT, '>', "Output file - default stdout"},
88 {"secret", OPT_SECOUT, '>', "File to store secret on encapsulation"},
89 {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
90 {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
91 {"verifyrecover", OPT_VERIFYRECOVER, '-',
92 "Verify with public key, recover original data"},
93
94 OPT_SECTION("Signing/Derivation/Encapsulation"),
95 {"digest", OPT_DIGEST, 's',
96 "Specify the digest algorithm when signing the raw input data"},
97 {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
98 {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
99 "Public key option that is read as a passphrase argument opt:passphrase"},
100 {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
101 {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
102 {"kemop", OPT_KEMOP, 's', "KEM operation specific to the key algorithm"},
103
104 OPT_R_OPTIONS,
105 OPT_PROV_OPTIONS,
106 {NULL}
107 };
108
pkeyutl_main(int argc,char ** argv)109 int pkeyutl_main(int argc, char **argv)
110 {
111 CONF *conf = NULL;
112 BIO *in = NULL, *out = NULL, *secout = NULL;
113 ENGINE *e = NULL;
114 EVP_PKEY_CTX *ctx = NULL;
115 EVP_PKEY *pkey = NULL;
116 char *infile = NULL, *outfile = NULL, *secoutfile = NULL, *sigfile = NULL, *passinarg = NULL;
117 char hexdump = 0, asn1parse = 0, rev = 0, *prog;
118 unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL, *secret = NULL;
119 OPTION_CHOICE o;
120 int buf_inlen = 0, siglen = -1;
121 int keyform = FORMAT_UNDEF, peerform = FORMAT_UNDEF;
122 int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
123 int engine_impl = 0;
124 int ret = 1, rv = -1;
125 size_t buf_outlen = 0, secretlen = 0;
126 const char *inkey = NULL;
127 const char *peerkey = NULL;
128 const char *kdfalg = NULL, *digestname = NULL, *kemop = NULL;
129 int kdflen = 0;
130 STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
131 STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
132 int rawin = 0;
133 EVP_MD_CTX *mctx = NULL;
134 EVP_MD *md = NULL;
135 int filesize = -1;
136 OSSL_LIB_CTX *libctx = app_get0_libctx();
137
138 prog = opt_init(argc, argv, pkeyutl_options);
139 while ((o = opt_next()) != OPT_EOF) {
140 switch (o) {
141 case OPT_EOF:
142 case OPT_ERR:
143 opthelp:
144 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
145 goto end;
146 case OPT_HELP:
147 opt_help(pkeyutl_options);
148 ret = 0;
149 goto end;
150 case OPT_IN:
151 infile = opt_arg();
152 break;
153 case OPT_OUT:
154 outfile = opt_arg();
155 break;
156 case OPT_SECOUT:
157 secoutfile = opt_arg();
158 break;
159 case OPT_SIGFILE:
160 sigfile = opt_arg();
161 break;
162 case OPT_ENGINE_IMPL:
163 engine_impl = 1;
164 break;
165 case OPT_INKEY:
166 inkey = opt_arg();
167 break;
168 case OPT_PEERKEY:
169 peerkey = opt_arg();
170 break;
171 case OPT_PASSIN:
172 passinarg = opt_arg();
173 break;
174 case OPT_PEERFORM:
175 if (!opt_format(opt_arg(), OPT_FMT_ANY, &peerform))
176 goto opthelp;
177 break;
178 case OPT_KEYFORM:
179 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
180 goto opthelp;
181 break;
182 case OPT_R_CASES:
183 if (!opt_rand(o))
184 goto end;
185 break;
186 case OPT_CONFIG:
187 conf = app_load_config_modules(opt_arg());
188 if (conf == NULL)
189 goto end;
190 break;
191 case OPT_PROV_CASES:
192 if (!opt_provider(o))
193 goto end;
194 break;
195 case OPT_ENGINE:
196 e = setup_engine(opt_arg(), 0);
197 break;
198 case OPT_PUBIN:
199 key_type = KEY_PUBKEY;
200 break;
201 case OPT_CERTIN:
202 key_type = KEY_CERT;
203 break;
204 case OPT_ASN1PARSE:
205 asn1parse = 1;
206 break;
207 case OPT_HEXDUMP:
208 hexdump = 1;
209 break;
210 case OPT_SIGN:
211 pkey_op = EVP_PKEY_OP_SIGN;
212 break;
213 case OPT_VERIFY:
214 pkey_op = EVP_PKEY_OP_VERIFY;
215 break;
216 case OPT_VERIFYRECOVER:
217 pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
218 break;
219 case OPT_ENCRYPT:
220 pkey_op = EVP_PKEY_OP_ENCRYPT;
221 break;
222 case OPT_DECRYPT:
223 pkey_op = EVP_PKEY_OP_DECRYPT;
224 break;
225 case OPT_DERIVE:
226 pkey_op = EVP_PKEY_OP_DERIVE;
227 break;
228 case OPT_DECAP:
229 pkey_op = EVP_PKEY_OP_DECAPSULATE;
230 break;
231 case OPT_ENCAP:
232 pkey_op = EVP_PKEY_OP_ENCAPSULATE;
233 break;
234 case OPT_KEMOP:
235 kemop = opt_arg();
236 break;
237 case OPT_KDF:
238 pkey_op = EVP_PKEY_OP_DERIVE;
239 key_type = KEY_NONE;
240 kdfalg = opt_arg();
241 break;
242 case OPT_KDFLEN:
243 kdflen = atoi(opt_arg());
244 break;
245 case OPT_REV:
246 rev = 1;
247 break;
248 case OPT_PKEYOPT:
249 if ((pkeyopts == NULL &&
250 (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
251 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
252 BIO_puts(bio_err, "out of memory\n");
253 goto end;
254 }
255 break;
256 case OPT_PKEYOPT_PASSIN:
257 if ((pkeyopts_passin == NULL &&
258 (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
259 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
260 BIO_puts(bio_err, "out of memory\n");
261 goto end;
262 }
263 break;
264 case OPT_RAWIN:
265 rawin = 1;
266 break;
267 case OPT_DIGEST:
268 digestname = opt_arg();
269 break;
270 }
271 }
272
273 /* No extra arguments. */
274 if (!opt_check_rest_arg(NULL))
275 goto opthelp;
276
277 if (!app_RAND_load())
278 goto end;
279
280 if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
281 BIO_printf(bio_err,
282 "%s: -rawin can only be used with -sign or -verify\n",
283 prog);
284 goto opthelp;
285 }
286
287 if (digestname != NULL && !rawin) {
288 BIO_printf(bio_err,
289 "%s: -digest can only be used with -rawin\n",
290 prog);
291 goto opthelp;
292 }
293
294 if (rawin && rev) {
295 BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
296 prog);
297 goto opthelp;
298 }
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: no peer key given (-peerkey parameter).\n", prog);
313 goto opthelp;
314 }
315
316 if (rawin) {
317 if ((mctx = EVP_MD_CTX_new()) == NULL) {
318 BIO_printf(bio_err, "Error: out of memory\n");
319 goto end;
320 }
321 }
322 ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
323 passinarg, pkey_op, e, engine_impl, rawin, &pkey,
324 mctx, digestname, kemop, libctx, app_get0_propq());
325 if (ctx == NULL) {
326 BIO_printf(bio_err, "%s: Error initializing context\n", prog);
327 goto end;
328 }
329 if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
330 BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
331 goto end;
332 }
333 if (pkeyopts != NULL) {
334 int num = sk_OPENSSL_STRING_num(pkeyopts);
335 int i;
336
337 for (i = 0; i < num; ++i) {
338 const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
339
340 if (pkey_ctrl_string(ctx, opt) <= 0) {
341 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
342 prog, opt);
343 goto end;
344 }
345 }
346 }
347 if (pkeyopts_passin != NULL) {
348 int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
349 int i;
350
351 for (i = 0; i < num; i++) {
352 char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
353 char *passin = strchr(opt, ':');
354 char *passwd;
355
356 if (passin == NULL) {
357 /* Get password interactively */
358 char passwd_buf[4096];
359 int r;
360
361 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
362 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
363 passwd_buf, 0);
364 if (r < 0) {
365 if (r == -2)
366 BIO_puts(bio_err, "user abort\n");
367 else
368 BIO_puts(bio_err, "entry failed\n");
369 goto end;
370 }
371 passwd = OPENSSL_strdup(passwd_buf);
372 if (passwd == NULL) {
373 BIO_puts(bio_err, "out of memory\n");
374 goto end;
375 }
376 } else {
377 /* Get password as a passin argument: First split option name
378 * and passphrase argument into two strings */
379 *passin = 0;
380 passin++;
381 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
382 BIO_printf(bio_err, "failed to get '%s'\n", opt);
383 goto end;
384 }
385 }
386
387 if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
388 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
389 prog, opt);
390 goto end;
391 }
392 OPENSSL_free(passwd);
393 }
394 }
395
396 if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
397 BIO_printf(bio_err,
398 "%s: Signature file specified for non verify\n", prog);
399 goto end;
400 }
401
402 if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
403 BIO_printf(bio_err,
404 "%s: No signature file specified for verify\n", prog);
405 goto end;
406 }
407
408 if (pkey_op != EVP_PKEY_OP_DERIVE && pkey_op != EVP_PKEY_OP_ENCAPSULATE) {
409 in = bio_open_default(infile, 'r', FORMAT_BINARY);
410 if (infile != NULL) {
411 struct stat st;
412
413 if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
414 filesize = (int)st.st_size;
415 }
416 if (in == NULL)
417 goto end;
418 }
419 out = bio_open_default(outfile, 'w', FORMAT_BINARY);
420 if (out == NULL)
421 goto end;
422
423 if (pkey_op == EVP_PKEY_OP_ENCAPSULATE) {
424 if (secoutfile == NULL) {
425 BIO_printf(bio_err, "Encapsulation requires '-secret' argument\n");
426 goto end;
427 }
428 secout = bio_open_default(secoutfile, 'w', FORMAT_BINARY);
429 if (secout == NULL)
430 goto end;
431 }
432
433 if (sigfile != NULL) {
434 BIO *sigbio = BIO_new_file(sigfile, "rb");
435
436 if (sigbio == NULL) {
437 BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
438 goto end;
439 }
440 siglen = bio_to_mem(&sig, keysize * 10, sigbio);
441 BIO_free(sigbio);
442 if (siglen < 0) {
443 BIO_printf(bio_err, "Error reading signature data\n");
444 goto end;
445 }
446 }
447
448 /* Raw input data is handled elsewhere */
449 if (in != NULL && !rawin) {
450 /* Read the input data */
451 buf_inlen = bio_to_mem(&buf_in, -1, in);
452 if (buf_inlen < 0) {
453 BIO_printf(bio_err, "Error reading input Data\n");
454 goto end;
455 }
456 if (rev) {
457 size_t i;
458 unsigned char ctmp;
459 size_t l = (size_t)buf_inlen;
460 for (i = 0; i < l / 2; i++) {
461 ctmp = buf_in[i];
462 buf_in[i] = buf_in[l - 1 - i];
463 buf_in[l - 1 - i] = ctmp;
464 }
465 }
466 }
467
468 /* Sanity check the input if the input is not raw */
469 if (!rawin
470 && buf_inlen > EVP_MAX_MD_SIZE
471 && (pkey_op == EVP_PKEY_OP_SIGN
472 || pkey_op == EVP_PKEY_OP_VERIFY)) {
473 BIO_printf(bio_err,
474 "Error: The input data looks too long to be a hash\n");
475 goto end;
476 }
477
478 if (pkey_op == EVP_PKEY_OP_VERIFY) {
479 if (rawin) {
480 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, sig, siglen,
481 NULL, 0);
482 } else {
483 rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
484 buf_in, (size_t)buf_inlen);
485 }
486 if (rv == 1) {
487 BIO_puts(out, "Signature Verified Successfully\n");
488 ret = 0;
489 } else {
490 BIO_puts(out, "Signature Verification Failure\n");
491 }
492 goto end;
493 }
494 if (rawin) {
495 /* rawin allocates the buffer in do_raw_keyop() */
496 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
497 &buf_out, (size_t *)&buf_outlen);
498 } else {
499 if (kdflen != 0) {
500 buf_outlen = kdflen;
501 rv = 1;
502 } else {
503 rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
504 buf_in, (size_t)buf_inlen, NULL, (size_t *)&secretlen);
505 }
506 if (rv > 0 && buf_outlen != 0) {
507 buf_out = app_malloc(buf_outlen, "buffer output");
508 if (secretlen > 0)
509 secret = app_malloc(secretlen, "secret output");
510 rv = do_keyop(ctx, pkey_op,
511 buf_out, (size_t *)&buf_outlen,
512 buf_in, (size_t)buf_inlen, secret, (size_t *)&secretlen);
513 }
514 }
515 if (rv <= 0) {
516 if (pkey_op != EVP_PKEY_OP_DERIVE) {
517 BIO_puts(bio_err, "Public Key operation error\n");
518 } else {
519 BIO_puts(bio_err, "Key derivation failed\n");
520 }
521 goto end;
522 }
523 ret = 0;
524
525 if (asn1parse) {
526 if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
527 ERR_print_errors(bio_err); /* but still return success */
528 } else if (hexdump) {
529 BIO_dump(out, (char *)buf_out, buf_outlen);
530 } else {
531 BIO_write(out, buf_out, buf_outlen);
532 }
533 if (secretlen > 0)
534 BIO_write(secout, secret, secretlen);
535
536 end:
537 if (ret != 0)
538 ERR_print_errors(bio_err);
539 EVP_MD_CTX_free(mctx);
540 EVP_PKEY_CTX_free(ctx);
541 EVP_MD_free(md);
542 release_engine(e);
543 BIO_free(in);
544 BIO_free_all(out);
545 BIO_free_all(secout);
546 OPENSSL_free(buf_in);
547 OPENSSL_free(buf_out);
548 OPENSSL_free(sig);
549 OPENSSL_free(secret);
550 sk_OPENSSL_STRING_free(pkeyopts);
551 sk_OPENSSL_STRING_free(pkeyopts_passin);
552 NCONF_free(conf);
553 return ret;
554 }
555
init_ctx(const char * kdfalg,int * pkeysize,const char * keyfile,int keyform,int key_type,char * passinarg,int pkey_op,ENGINE * e,const int engine_impl,int rawin,EVP_PKEY ** ppkey,EVP_MD_CTX * mctx,const char * digestname,const char * kemop,OSSL_LIB_CTX * libctx,const char * propq)556 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
557 const char *keyfile, int keyform, int key_type,
558 char *passinarg, int pkey_op, ENGINE *e,
559 const int engine_impl, int rawin,
560 EVP_PKEY **ppkey, EVP_MD_CTX *mctx, const char *digestname,
561 const char *kemop, OSSL_LIB_CTX *libctx, const char *propq)
562 {
563 EVP_PKEY *pkey = NULL;
564 EVP_PKEY_CTX *ctx = NULL;
565 ENGINE *impl = NULL;
566 char *passin = NULL;
567 int rv = -1;
568 X509 *x;
569
570 if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
571 || (pkey_op == EVP_PKEY_OP_DERIVE))
572 && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
573 BIO_printf(bio_err, "A private key is needed for this operation\n");
574 goto end;
575 }
576 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
577 BIO_printf(bio_err, "Error getting password\n");
578 goto end;
579 }
580 switch (key_type) {
581 case KEY_PRIVKEY:
582 pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
583 break;
584
585 case KEY_PUBKEY:
586 pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
587 break;
588
589 case KEY_CERT:
590 x = load_cert(keyfile, keyform, "Certificate");
591 if (x) {
592 pkey = X509_get_pubkey(x);
593 X509_free(x);
594 }
595 break;
596
597 case KEY_NONE:
598 break;
599
600 }
601
602 #ifndef OPENSSL_NO_ENGINE
603 if (engine_impl)
604 impl = e;
605 #endif
606
607 if (kdfalg != NULL) {
608 int kdfnid = OBJ_sn2nid(kdfalg);
609
610 if (kdfnid == NID_undef) {
611 kdfnid = OBJ_ln2nid(kdfalg);
612 if (kdfnid == NID_undef) {
613 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
614 kdfalg);
615 goto end;
616 }
617 }
618 if (impl != NULL)
619 ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
620 else
621 ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
622 } else {
623 if (pkey == NULL)
624 goto end;
625
626 *pkeysize = EVP_PKEY_get_size(pkey);
627 if (impl != NULL)
628 ctx = EVP_PKEY_CTX_new(pkey, impl);
629 else
630 ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
631 if (ppkey != NULL)
632 *ppkey = pkey;
633 EVP_PKEY_free(pkey);
634 }
635
636 if (ctx == NULL)
637 goto end;
638
639 if (rawin) {
640 EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
641
642 switch (pkey_op) {
643 case EVP_PKEY_OP_SIGN:
644 rv = EVP_DigestSignInit_ex(mctx, NULL, digestname, libctx, propq,
645 pkey, NULL);
646 break;
647
648 case EVP_PKEY_OP_VERIFY:
649 rv = EVP_DigestVerifyInit_ex(mctx, NULL, digestname, libctx, propq,
650 pkey, NULL);
651 break;
652 }
653
654 } else {
655 switch (pkey_op) {
656 case EVP_PKEY_OP_SIGN:
657 rv = EVP_PKEY_sign_init(ctx);
658 break;
659
660 case EVP_PKEY_OP_VERIFY:
661 rv = EVP_PKEY_verify_init(ctx);
662 break;
663
664 case EVP_PKEY_OP_VERIFYRECOVER:
665 rv = EVP_PKEY_verify_recover_init(ctx);
666 break;
667
668 case EVP_PKEY_OP_ENCRYPT:
669 rv = EVP_PKEY_encrypt_init(ctx);
670 break;
671
672 case EVP_PKEY_OP_DECRYPT:
673 rv = EVP_PKEY_decrypt_init(ctx);
674 break;
675
676 case EVP_PKEY_OP_DERIVE:
677 rv = EVP_PKEY_derive_init(ctx);
678 break;
679
680 case EVP_PKEY_OP_ENCAPSULATE:
681 rv = EVP_PKEY_encapsulate_init(ctx, NULL);
682 if (rv > 0 && kemop != NULL)
683 rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
684 break;
685
686 case EVP_PKEY_OP_DECAPSULATE:
687 rv = EVP_PKEY_decapsulate_init(ctx, NULL);
688 if (rv > 0 && kemop != NULL)
689 rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
690 break;
691 }
692 }
693
694 if (rv <= 0) {
695 EVP_PKEY_CTX_free(ctx);
696 ctx = NULL;
697 }
698
699 end:
700 OPENSSL_free(passin);
701 return ctx;
702
703 }
704
setup_peer(EVP_PKEY_CTX * ctx,int peerform,const char * file,ENGINE * e)705 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
706 ENGINE *e)
707 {
708 EVP_PKEY *peer = NULL;
709 ENGINE *engine = NULL;
710 int ret;
711
712 if (peerform == FORMAT_ENGINE)
713 engine = e;
714 peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
715 if (peer == NULL) {
716 BIO_printf(bio_err, "Error reading peer key %s\n", file);
717 return 0;
718 }
719
720 ret = EVP_PKEY_derive_set_peer(ctx, peer) > 0;
721
722 EVP_PKEY_free(peer);
723 return ret;
724 }
725
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)726 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
727 unsigned char *out, size_t *poutlen,
728 const unsigned char *in, size_t inlen,
729 unsigned char *secret, size_t *pseclen)
730 {
731 int rv = 0;
732 switch (pkey_op) {
733 case EVP_PKEY_OP_VERIFYRECOVER:
734 rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
735 break;
736
737 case EVP_PKEY_OP_SIGN:
738 rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
739 break;
740
741 case EVP_PKEY_OP_ENCRYPT:
742 rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
743 break;
744
745 case EVP_PKEY_OP_DECRYPT:
746 rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
747 break;
748
749 case EVP_PKEY_OP_DERIVE:
750 rv = EVP_PKEY_derive(ctx, out, poutlen);
751 break;
752
753 case EVP_PKEY_OP_ENCAPSULATE:
754 rv = EVP_PKEY_encapsulate(ctx, out, poutlen, secret, pseclen);
755 break;
756
757 case EVP_PKEY_OP_DECAPSULATE:
758 rv = EVP_PKEY_decapsulate(ctx, out, poutlen, in, inlen);
759 break;
760
761 }
762 return rv;
763 }
764
765 #define TBUF_MAXSIZE 2048
766
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)767 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
768 EVP_PKEY *pkey, BIO *in,
769 int filesize, unsigned char *sig, int siglen,
770 unsigned char **out, size_t *poutlen)
771 {
772 int rv = 0;
773 unsigned char tbuf[TBUF_MAXSIZE];
774 unsigned char *mbuf = NULL;
775 int buf_len = 0;
776
777 /* Some algorithms only support oneshot digests */
778 if (EVP_PKEY_get_id(pkey) == EVP_PKEY_ED25519
779 || EVP_PKEY_get_id(pkey) == EVP_PKEY_ED448) {
780 if (filesize < 0) {
781 BIO_printf(bio_err,
782 "Error: unable to determine file size for oneshot operation\n");
783 goto end;
784 }
785 mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
786 switch (pkey_op) {
787 case EVP_PKEY_OP_VERIFY:
788 buf_len = BIO_read(in, mbuf, filesize);
789 if (buf_len != filesize) {
790 BIO_printf(bio_err, "Error reading raw input data\n");
791 goto end;
792 }
793 rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
794 break;
795 case EVP_PKEY_OP_SIGN:
796 buf_len = BIO_read(in, mbuf, filesize);
797 if (buf_len != filesize) {
798 BIO_printf(bio_err, "Error reading raw input data\n");
799 goto end;
800 }
801 rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
802 if (rv == 1 && out != NULL) {
803 *out = app_malloc(*poutlen, "buffer output");
804 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
805 }
806 break;
807 }
808 goto end;
809 }
810
811 switch (pkey_op) {
812 case EVP_PKEY_OP_VERIFY:
813 for (;;) {
814 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
815 if (buf_len == 0)
816 break;
817 if (buf_len < 0) {
818 BIO_printf(bio_err, "Error reading raw input data\n");
819 goto end;
820 }
821 rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
822 if (rv != 1) {
823 BIO_printf(bio_err, "Error verifying raw input data\n");
824 goto end;
825 }
826 }
827 rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
828 break;
829 case EVP_PKEY_OP_SIGN:
830 for (;;) {
831 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
832 if (buf_len == 0)
833 break;
834 if (buf_len < 0) {
835 BIO_printf(bio_err, "Error reading raw input data\n");
836 goto end;
837 }
838 rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
839 if (rv != 1) {
840 BIO_printf(bio_err, "Error signing raw input data\n");
841 goto end;
842 }
843 }
844 rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
845 if (rv == 1 && out != NULL) {
846 *out = app_malloc(*poutlen, "buffer output");
847 rv = EVP_DigestSignFinal(mctx, *out, poutlen);
848 }
849 break;
850 }
851
852 end:
853 OPENSSL_free(mbuf);
854 return rv;
855 }
856
