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
is_EdDSA(const EVP_PKEY * pkey)46 static int is_EdDSA(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
only_rawin(const EVP_PKEY * pkey)54 static int only_rawin(const EVP_PKEY *pkey)
55 {
56 return is_EdDSA(pkey);
57 }
58
59 typedef enum OPTION_choice {
60 OPT_COMMON,
61 OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
62 OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
63 OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
64 OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
65 OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
66 OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
67 OPT_DECAP, OPT_ENCAP, OPT_SECOUT, OPT_KEMOP,
68 OPT_CONFIG,
69 OPT_RAWIN, OPT_DIGEST
70 } OPTION_CHOICE;
71
72 const OPTIONS pkeyutl_options[] = {
73 OPT_SECTION("General"),
74 {"help", OPT_HELP, '-', "Display this summary"},
75 #ifndef OPENSSL_NO_ENGINE
76 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
77 {"engine_impl", OPT_ENGINE_IMPL, '-',
78 "Also use engine given by -engine for crypto operations"},
79 #endif
80 {"sign", OPT_SIGN, '-', "Sign input data with private key"},
81 {"verify", OPT_VERIFY, '-', "Verify with public key"},
82 {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
83 {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
84 {"derive", OPT_DERIVE, '-', "Derive shared secret"},
85 {"decap", OPT_DECAP, '-', "Decapsulate shared secret"},
86 {"encap", OPT_ENCAP, '-', "Encapsulate shared secret"},
87 OPT_CONFIG_OPTION,
88
89 OPT_SECTION("Input"),
90 {"in", OPT_IN, '<', "Input file - default stdin"},
91 {"inkey", OPT_INKEY, 's', "Input key, by default private key"},
92 {"pubin", OPT_PUBIN, '-', "Input key is a public key"},
93 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
94 {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
95 {"peerform", OPT_PEERFORM, 'E', "Peer key format (DER/PEM/P12/ENGINE)"},
96 {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
97 {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
98 {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
99 {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
100
101 OPT_SECTION("Output"),
102 {"out", OPT_OUT, '>', "Output file - default stdout"},
103 {"secret", OPT_SECOUT, '>', "File to store secret on encapsulation"},
104 {"asn1parse", OPT_ASN1PARSE, '-',
105 "parse the output as ASN.1 data to check its DER encoding and print errors"},
106 {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
107 {"verifyrecover", OPT_VERIFYRECOVER, '-',
108 "Verify RSA signature, recovering original signature input data"},
109
110 OPT_SECTION("Signing/Derivation/Encapsulation"),
111 {"rawin", OPT_RAWIN, '-',
112 "Indicate that the signature/verification input data is not yet hashed"},
113 {"digest", OPT_DIGEST, 's',
114 "The digest algorithm to use for signing/verifying raw input data. Implies -rawin"},
115 {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
116 {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
117 "Public key option that is read as a passphrase argument opt:passphrase"},
118 {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
119 {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
120 {"kemop", OPT_KEMOP, 's', "KEM operation specific to the key algorithm"},
121
122 OPT_R_OPTIONS,
123 OPT_PROV_OPTIONS,
124 {NULL}
125 };
126
pkeyutl_main(int argc,char ** argv)127 int pkeyutl_main(int argc, char **argv)
128 {
129 CONF *conf = NULL;
130 BIO *in = NULL, *out = NULL, *secout = NULL;
131 ENGINE *e = NULL;
132 EVP_PKEY_CTX *ctx = NULL;
133 EVP_PKEY *pkey = NULL;
134 char *infile = NULL, *outfile = NULL, *secoutfile = NULL, *sigfile = NULL, *passinarg = NULL;
135 char hexdump = 0, asn1parse = 0, rev = 0, *prog;
136 unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL, *secret = NULL;
137 OPTION_CHOICE o;
138 int buf_inlen = 0, siglen = -1;
139 int keyform = FORMAT_UNDEF, peerform = FORMAT_UNDEF;
140 int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
141 int engine_impl = 0;
142 int ret = 1, rv = -1;
143 size_t buf_outlen = 0, secretlen = 0;
144 const char *inkey = NULL;
145 const char *peerkey = NULL;
146 const char *kdfalg = NULL, *digestname = NULL, *kemop = NULL;
147 int kdflen = 0;
148 STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
149 STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
150 int rawin = 0;
151 EVP_MD_CTX *mctx = NULL;
152 EVP_MD *md = NULL;
153 int filesize = -1;
154 OSSL_LIB_CTX *libctx = app_get0_libctx();
155
156 prog = opt_init(argc, argv, pkeyutl_options);
157 while ((o = opt_next()) != OPT_EOF) {
158 switch (o) {
159 case OPT_EOF:
160 case OPT_ERR:
161 opthelp:
162 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
163 goto end;
164 case OPT_HELP:
165 opt_help(pkeyutl_options);
166 ret = 0;
167 goto end;
168 case OPT_IN:
169 infile = opt_arg();
170 break;
171 case OPT_OUT:
172 outfile = opt_arg();
173 break;
174 case OPT_SECOUT:
175 secoutfile = opt_arg();
176 break;
177 case OPT_SIGFILE:
178 sigfile = opt_arg();
179 break;
180 case OPT_ENGINE_IMPL:
181 engine_impl = 1;
182 break;
183 case OPT_INKEY:
184 inkey = opt_arg();
185 break;
186 case OPT_PEERKEY:
187 peerkey = opt_arg();
188 break;
189 case OPT_PASSIN:
190 passinarg = opt_arg();
191 break;
192 case OPT_PEERFORM:
193 if (!opt_format(opt_arg(), OPT_FMT_ANY, &peerform))
194 goto opthelp;
195 break;
196 case OPT_KEYFORM:
197 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
198 goto opthelp;
199 break;
200 case OPT_R_CASES:
201 if (!opt_rand(o))
202 goto end;
203 break;
204 case OPT_CONFIG:
205 conf = app_load_config_modules(opt_arg());
206 if (conf == NULL)
207 goto end;
208 break;
209 case OPT_PROV_CASES:
210 if (!opt_provider(o))
211 goto end;
212 break;
213 case OPT_ENGINE:
214 e = setup_engine(opt_arg(), 0);
215 break;
216 case OPT_PUBIN:
217 key_type = KEY_PUBKEY;
218 break;
219 case OPT_CERTIN:
220 key_type = KEY_CERT;
221 break;
222 case OPT_ASN1PARSE:
223 asn1parse = 1;
224 break;
225 case OPT_HEXDUMP:
226 hexdump = 1;
227 break;
228 case OPT_SIGN:
229 pkey_op = EVP_PKEY_OP_SIGN;
230 break;
231 case OPT_VERIFY:
232 pkey_op = EVP_PKEY_OP_VERIFY;
233 break;
234 case OPT_VERIFYRECOVER:
235 pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
236 break;
237 case OPT_ENCRYPT:
238 pkey_op = EVP_PKEY_OP_ENCRYPT;
239 break;
240 case OPT_DECRYPT:
241 pkey_op = EVP_PKEY_OP_DECRYPT;
242 break;
243 case OPT_DERIVE:
244 pkey_op = EVP_PKEY_OP_DERIVE;
245 break;
246 case OPT_DECAP:
247 pkey_op = EVP_PKEY_OP_DECAPSULATE;
248 break;
249 case OPT_ENCAP:
250 pkey_op = EVP_PKEY_OP_ENCAPSULATE;
251 break;
252 case OPT_KEMOP:
253 kemop = opt_arg();
254 break;
255 case OPT_KDF:
256 pkey_op = EVP_PKEY_OP_DERIVE;
257 key_type = KEY_NONE;
258 kdfalg = opt_arg();
259 break;
260 case OPT_KDFLEN:
261 kdflen = atoi(opt_arg());
262 break;
263 case OPT_REV:
264 rev = 1;
265 break;
266 case OPT_PKEYOPT:
267 if ((pkeyopts == NULL &&
268 (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
269 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
270 BIO_puts(bio_err, "out of memory\n");
271 goto end;
272 }
273 break;
274 case OPT_PKEYOPT_PASSIN:
275 if ((pkeyopts_passin == NULL &&
276 (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
277 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
278 BIO_puts(bio_err, "out of memory\n");
279 goto end;
280 }
281 break;
282 case OPT_RAWIN:
283 rawin = 1;
284 break;
285 case OPT_DIGEST:
286 digestname = opt_arg();
287 break;
288 }
289 }
290
291 /* No extra arguments. */
292 if (!opt_check_rest_arg(NULL))
293 goto opthelp;
294
295 if (!app_RAND_load())
296 goto end;
297
298 if (digestname != NULL)
299 rawin = 1;
300
301 if (kdfalg != NULL) {
302 if (kdflen == 0) {
303 BIO_printf(bio_err,
304 "%s: no KDF length given (-kdflen parameter).\n", prog);
305 goto opthelp;
306 }
307 } else if (inkey == NULL) {
308 BIO_printf(bio_err,
309 "%s: no private key given (-inkey parameter).\n", prog);
310 goto opthelp;
311 } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
312 BIO_printf(bio_err,
313 "%s: no peer key given (-peerkey parameter).\n", prog);
314 goto opthelp;
315 }
316
317 pkey = get_pkey(kdfalg, inkey, keyform, key_type, passinarg, pkey_op, e);
318
319 if (pkey_op == EVP_PKEY_OP_VERIFYRECOVER && !EVP_PKEY_is_a(pkey, "RSA")) {
320 BIO_printf(bio_err, "%s: -verifyrecover can be used only with RSA\n", prog);
321 goto end;
322 }
323
324 if (pkey_op == EVP_PKEY_OP_SIGN || pkey_op == EVP_PKEY_OP_VERIFY) {
325 if (only_rawin(pkey)) {
326 if (is_EdDSA(pkey) && digestname != NULL) {
327 BIO_printf(bio_err,
328 "%s: -digest (prehash) is not supported with EdDSA\n", prog);
329 goto end;
330 }
331 rawin = 1; /* implied for Ed25519(ph) and Ed448(ph) and maybe others in the future */
332 }
333 } else if (digestname != NULL || rawin) {
334 BIO_printf(bio_err,
335 "%s: -digest and -rawin can only be used with -sign or -verify\n", prog);
336 goto opthelp;
337 }
338
339 if (rawin && rev) {
340 BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n", prog);
341 goto opthelp;
342 }
343
344 if (rawin) {
345 if ((mctx = EVP_MD_CTX_new()) == NULL) {
346 BIO_printf(bio_err, "Error: out of memory\n");
347 goto end;
348 }
349 }
350 ctx = init_ctx(kdfalg, &keysize, pkey_op, e, engine_impl, rawin, pkey,
351 mctx, digestname, kemop, libctx, app_get0_propq());
352 if (ctx == NULL) {
353 BIO_printf(bio_err, "%s: Error initializing context\n", prog);
354 goto end;
355 }
356 if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
357 BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
358 goto end;
359 }
360 if (pkeyopts != NULL) {
361 int num = sk_OPENSSL_STRING_num(pkeyopts);
362 int i;
363
364 for (i = 0; i < num; ++i) {
365 const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
366
367 if (pkey_ctrl_string(ctx, opt) <= 0) {
368 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
369 prog, opt);
370 goto end;
371 }
372 }
373 }
374 if (pkeyopts_passin != NULL) {
375 int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
376 int i;
377
378 for (i = 0; i < num; i++) {
379 char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
380 char *passin = strchr(opt, ':');
381 char *passwd;
382
383 if (passin == NULL) {
384 /* Get password interactively */
385 char passwd_buf[4096];
386 int r;
387
388 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
389 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
390 passwd_buf, 0);
391 if (r < 0) {
392 if (r == -2)
393 BIO_puts(bio_err, "user abort\n");
394 else
395 BIO_puts(bio_err, "entry failed\n");
396 goto end;
397 }
398 passwd = OPENSSL_strdup(passwd_buf);
399 if (passwd == NULL) {
400 BIO_puts(bio_err, "out of memory\n");
401 goto end;
402 }
403 } else {
404 /*
405 * Get password as a passin argument: First split option name
406 * and passphrase argument into two strings
407 */
408 *passin = 0;
409 passin++;
410 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
411 BIO_printf(bio_err, "failed to get '%s'\n", opt);
412 goto end;
413 }
414 }
415
416 if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
417 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
418 prog, opt);
419 goto end;
420 }
421 OPENSSL_free(passwd);
422 }
423 }
424
425 if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
426 BIO_printf(bio_err,
427 "%s: Signature file specified for non verify\n", prog);
428 goto end;
429 }
430
431 if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
432 BIO_printf(bio_err,
433 "%s: No signature file specified for verify\n", prog);
434 goto end;
435 }
436
437 if (pkey_op != EVP_PKEY_OP_DERIVE && pkey_op != EVP_PKEY_OP_ENCAPSULATE) {
438 in = bio_open_default(infile, 'r', FORMAT_BINARY);
439 if (infile != NULL) {
440 struct stat st;
441
442 if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
443 filesize = (int)st.st_size;
444 }
445 if (in == NULL)
446 goto end;
447 }
448 out = bio_open_default(outfile, 'w', FORMAT_BINARY);
449 if (out == NULL)
450 goto end;
451
452 if (pkey_op == EVP_PKEY_OP_ENCAPSULATE) {
453 if (secoutfile == NULL) {
454 BIO_printf(bio_err, "Encapsulation requires '-secret' argument\n");
455 goto end;
456 }
457 secout = bio_open_default(secoutfile, 'w', FORMAT_BINARY);
458 if (secout == NULL)
459 goto end;
460 }
461
462 if (sigfile != NULL) {
463 BIO *sigbio = BIO_new_file(sigfile, "rb");
464
465 if (sigbio == NULL) {
466 BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
467 goto end;
468 }
469 siglen = bio_to_mem(&sig, keysize * 10, sigbio);
470 BIO_free(sigbio);
471 if (siglen < 0) {
472 BIO_printf(bio_err, "Error reading signature data\n");
473 goto end;
474 }
475 }
476
477 /* Raw input data is handled elsewhere */
478 if (in != NULL && !rawin) {
479 /* Read the input data */
480 buf_inlen = bio_to_mem(&buf_in, -1, in);
481 if (buf_inlen < 0) {
482 BIO_printf(bio_err, "Error reading input Data\n");
483 goto end;
484 }
485 if (rev) {
486 size_t i;
487 unsigned char ctmp;
488 size_t l = (size_t)buf_inlen;
489
490 for (i = 0; i < l / 2; i++) {
491 ctmp = buf_in[i];
492 buf_in[i] = buf_in[l - 1 - i];
493 buf_in[l - 1 - i] = ctmp;
494 }
495 }
496 }
497
498 /* Sanity check the input if the input is not raw */
499 if (!rawin
500 && (pkey_op == EVP_PKEY_OP_SIGN || pkey_op == EVP_PKEY_OP_VERIFY)) {
501 if (buf_inlen > EVP_MAX_MD_SIZE) {
502 BIO_printf(bio_err,
503 "Error: The non-raw input data length %d is too long - max supported hashed size is %d\n",
504 buf_inlen, EVP_MAX_MD_SIZE);
505 goto end;
506 }
507 }
508
509 if (pkey_op == EVP_PKEY_OP_VERIFY) {
510 if (rawin) {
511 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, sig, siglen,
512 NULL, 0);
513 } else {
514 rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
515 buf_in, (size_t)buf_inlen);
516 }
517 if (rv == 1) {
518 BIO_puts(out, "Signature Verified Successfully\n");
519 ret = 0;
520 } else {
521 BIO_puts(out, "Signature Verification Failure\n");
522 }
523 goto end;
524 }
525 if (rawin) {
526 /* rawin allocates the buffer in do_raw_keyop() */
527 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
528 &buf_out, (size_t *)&buf_outlen);
529 } else {
530 if (kdflen != 0) {
531 buf_outlen = kdflen;
532 rv = 1;
533 } else {
534 rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
535 buf_in, (size_t)buf_inlen, NULL, (size_t *)&secretlen);
536 }
537 if (rv > 0 && buf_outlen != 0) {
538 buf_out = app_malloc(buf_outlen, "buffer output");
539 if (secretlen > 0)
540 secret = app_malloc(secretlen, "secret output");
541 rv = do_keyop(ctx, pkey_op,
542 buf_out, (size_t *)&buf_outlen,
543 buf_in, (size_t)buf_inlen, secret, (size_t *)&secretlen);
544 }
545 }
546 if (rv <= 0) {
547 if (pkey_op != EVP_PKEY_OP_DERIVE) {
548 BIO_puts(bio_err, "Public Key operation error\n");
549 } else {
550 BIO_puts(bio_err, "Key derivation failed\n");
551 }
552 goto end;
553 }
554 ret = 0;
555
556 if (asn1parse) {
557 if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
558 ERR_print_errors(bio_err); /* but still return success */
559 } else if (hexdump) {
560 BIO_dump(out, (char *)buf_out, buf_outlen);
561 } else {
562 BIO_write(out, buf_out, buf_outlen);
563 }
564 if (secretlen > 0)
565 BIO_write(secout, secret, secretlen);
566
567 end:
568 if (ret != 0)
569 ERR_print_errors(bio_err);
570 EVP_MD_CTX_free(mctx);
571 EVP_PKEY_CTX_free(ctx);
572 EVP_PKEY_free(pkey);
573 EVP_MD_free(md);
574 release_engine(e);
575 BIO_free(in);
576 BIO_free_all(out);
577 BIO_free_all(secout);
578 OPENSSL_free(buf_in);
579 OPENSSL_free(buf_out);
580 OPENSSL_free(sig);
581 OPENSSL_free(secret);
582 sk_OPENSSL_STRING_free(pkeyopts);
583 sk_OPENSSL_STRING_free(pkeyopts_passin);
584 NCONF_free(conf);
585 return ret;
586 }
587
get_pkey(const char * kdfalg,const char * keyfile,int keyform,int key_type,char * passinarg,int pkey_op,ENGINE * e)588 static EVP_PKEY *get_pkey(const char *kdfalg,
589 const char *keyfile, int keyform, int key_type,
590 char *passinarg, int pkey_op, ENGINE *e)
591 {
592 EVP_PKEY *pkey = NULL;
593 char *passin = NULL;
594 X509 *x;
595
596 if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
597 || (pkey_op == EVP_PKEY_OP_DERIVE))
598 && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
599 BIO_printf(bio_err, "A private key is needed for this operation\n");
600 return NULL;
601 }
602 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
603 BIO_printf(bio_err, "Error getting password\n");
604 return NULL;
605 }
606 switch (key_type) {
607 case KEY_PRIVKEY:
608 pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
609 break;
610
611 case KEY_PUBKEY:
612 pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
613 break;
614
615 case KEY_CERT:
616 x = load_cert(keyfile, keyform, "Certificate");
617 if (x) {
618 pkey = X509_get_pubkey(x);
619 X509_free(x);
620 }
621 break;
622
623 case KEY_NONE:
624 break;
625
626 }
627 OPENSSL_free(passin);
628 return pkey;
629 }
630
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)631 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
632 int pkey_op, ENGINE *e,
633 const int engine_impl, int rawin,
634 EVP_PKEY *pkey /* ownership is passed to ctx */,
635 EVP_MD_CTX *mctx, const char *digestname,
636 const char *kemop, OSSL_LIB_CTX *libctx, const char *propq)
637 {
638 EVP_PKEY_CTX *ctx = NULL;
639 ENGINE *impl = NULL;
640 int rv = -1;
641
642 #ifndef OPENSSL_NO_ENGINE
643 if (engine_impl)
644 impl = e;
645 #endif
646
647 if (kdfalg != NULL) {
648 int kdfnid = OBJ_sn2nid(kdfalg);
649
650 if (kdfnid == NID_undef) {
651 kdfnid = OBJ_ln2nid(kdfalg);
652 if (kdfnid == NID_undef) {
653 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
654 kdfalg);
655 return NULL;
656 }
657 }
658 if (impl != NULL)
659 ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
660 else
661 ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
662 } else {
663 if (pkey == NULL)
664 return NULL;
665
666 *pkeysize = EVP_PKEY_get_size(pkey);
667 if (impl != NULL)
668 ctx = EVP_PKEY_CTX_new(pkey, impl);
669 else
670 ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
671 }
672
673 if (ctx == NULL)
674 return NULL;
675
676 if (rawin) {
677 EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
678
679 switch (pkey_op) {
680 case EVP_PKEY_OP_SIGN:
681 rv = EVP_DigestSignInit_ex(mctx, NULL, digestname, libctx, propq,
682 pkey, NULL);
683 break;
684
685 case EVP_PKEY_OP_VERIFY:
686 rv = EVP_DigestVerifyInit_ex(mctx, NULL, digestname, libctx, propq,
687 pkey, NULL);
688 break;
689 }
690
691 } else {
692 switch (pkey_op) {
693 case EVP_PKEY_OP_SIGN:
694 rv = EVP_PKEY_sign_init(ctx);
695 break;
696
697 case EVP_PKEY_OP_VERIFY:
698 rv = EVP_PKEY_verify_init(ctx);
699 break;
700
701 case EVP_PKEY_OP_VERIFYRECOVER:
702 rv = EVP_PKEY_verify_recover_init(ctx);
703 break;
704
705 case EVP_PKEY_OP_ENCRYPT:
706 rv = EVP_PKEY_encrypt_init(ctx);
707 break;
708
709 case EVP_PKEY_OP_DECRYPT:
710 rv = EVP_PKEY_decrypt_init(ctx);
711 break;
712
713 case EVP_PKEY_OP_DERIVE:
714 rv = EVP_PKEY_derive_init(ctx);
715 break;
716
717 case EVP_PKEY_OP_ENCAPSULATE:
718 rv = EVP_PKEY_encapsulate_init(ctx, NULL);
719 if (rv > 0 && kemop != NULL)
720 rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
721 break;
722
723 case EVP_PKEY_OP_DECAPSULATE:
724 rv = EVP_PKEY_decapsulate_init(ctx, NULL);
725 if (rv > 0 && kemop != NULL)
726 rv = EVP_PKEY_CTX_set_kem_op(ctx, kemop);
727 break;
728 }
729 }
730
731 if (rv <= 0) {
732 EVP_PKEY_CTX_free(ctx);
733 ctx = NULL;
734 }
735
736 return ctx;
737 }
738
setup_peer(EVP_PKEY_CTX * ctx,int peerform,const char * file,ENGINE * e)739 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
740 ENGINE *e)
741 {
742 EVP_PKEY *peer = NULL;
743 ENGINE *engine = NULL;
744 int ret;
745
746 if (peerform == FORMAT_ENGINE)
747 engine = e;
748 peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
749 if (peer == NULL) {
750 BIO_printf(bio_err, "Error reading peer key %s\n", file);
751 return 0;
752 }
753
754 ret = EVP_PKEY_derive_set_peer(ctx, peer) > 0;
755
756 EVP_PKEY_free(peer);
757 return ret;
758 }
759
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)760 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
761 unsigned char *out, size_t *poutlen,
762 const unsigned char *in, size_t inlen,
763 unsigned char *secret, size_t *pseclen)
764 {
765 int rv = 0;
766
767 switch (pkey_op) {
768 case EVP_PKEY_OP_VERIFYRECOVER:
769 rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
770 break;
771
772 case EVP_PKEY_OP_SIGN:
773 rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
774 break;
775
776 case EVP_PKEY_OP_ENCRYPT:
777 rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
778 break;
779
780 case EVP_PKEY_OP_DECRYPT:
781 rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
782 break;
783
784 case EVP_PKEY_OP_DERIVE:
785 rv = EVP_PKEY_derive(ctx, out, poutlen);
786 break;
787
788 case EVP_PKEY_OP_ENCAPSULATE:
789 rv = EVP_PKEY_encapsulate(ctx, out, poutlen, secret, pseclen);
790 break;
791
792 case EVP_PKEY_OP_DECAPSULATE:
793 rv = EVP_PKEY_decapsulate(ctx, out, poutlen, in, inlen);
794 break;
795
796 }
797 return rv;
798 }
799
800 #define TBUF_MAXSIZE 2048
801
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)802 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
803 EVP_PKEY *pkey, BIO *in,
804 int filesize, unsigned char *sig, int siglen,
805 unsigned char **out, size_t *poutlen)
806 {
807 int rv = 0;
808 unsigned char tbuf[TBUF_MAXSIZE];
809 unsigned char *mbuf = NULL;
810 int buf_len = 0;
811
812 /* Some algorithms only support oneshot digests */
813 if (only_rawin(pkey)) {
814 if (filesize < 0) {
815 BIO_printf(bio_err,
816 "Error: unable to determine file size for oneshot operation\n");
817 goto end;
818 }
819 mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
820 switch (pkey_op) {
821 case EVP_PKEY_OP_VERIFY:
822 buf_len = BIO_read(in, mbuf, filesize);
823 if (buf_len != filesize) {
824 BIO_printf(bio_err, "Error reading raw input data\n");
825 goto end;
826 }
827 rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
828 break;
829 case EVP_PKEY_OP_SIGN:
830 buf_len = BIO_read(in, mbuf, filesize);
831 if (buf_len != filesize) {
832 BIO_printf(bio_err, "Error reading raw input data\n");
833 goto end;
834 }
835 rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
836 if (rv == 1 && out != NULL) {
837 *out = app_malloc(*poutlen, "buffer output");
838 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
839 }
840 break;
841 }
842 goto end;
843 }
844
845 switch (pkey_op) {
846 case EVP_PKEY_OP_VERIFY:
847 for (;;) {
848 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
849 if (buf_len == 0)
850 break;
851 if (buf_len < 0) {
852 BIO_printf(bio_err, "Error reading raw input data\n");
853 goto end;
854 }
855 rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
856 if (rv != 1) {
857 BIO_printf(bio_err, "Error verifying raw input data\n");
858 goto end;
859 }
860 }
861 rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
862 break;
863 case EVP_PKEY_OP_SIGN:
864 for (;;) {
865 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
866 if (buf_len == 0)
867 break;
868 if (buf_len < 0) {
869 BIO_printf(bio_err, "Error reading raw input data\n");
870 goto end;
871 }
872 rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
873 if (rv != 1) {
874 BIO_printf(bio_err, "Error signing raw input data\n");
875 goto end;
876 }
877 }
878 rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
879 if (rv == 1 && out != NULL) {
880 *out = app_malloc(*poutlen, "buffer output");
881 rv = EVP_DigestSignFinal(mctx, *out, poutlen);
882 }
883 break;
884 }
885
886 end:
887 OPENSSL_free(mbuf);
888 return rv;
889 }
890
