2 * Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
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
13 #include <openssl/err.h>
14 #include <openssl/pem.h>
15 #include <openssl/evp.h>
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,
28 OSSL_LIB_CTX *libctx, const char *propq);
30 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
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);
37 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
38 EVP_PKEY *pkey, BIO *in,
39 int filesize, unsigned char *sig, int siglen,
40 unsigned char **out, size_t *poutlen);
42 typedef enum OPTION_choice {
43 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
44 OPT_ENGINE, OPT_ENGINE_IMPL, OPT_IN, OPT_OUT,
45 OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
46 OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
47 OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
48 OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT, OPT_PKEYOPT_PASSIN, OPT_KDF,
49 OPT_KDFLEN, OPT_R_ENUM, OPT_PROV_ENUM,
54 const OPTIONS pkeyutl_options[] = {
55 OPT_SECTION("General"),
56 {"help", OPT_HELP, '-', "Display this summary"},
57 #ifndef OPENSSL_NO_ENGINE
58 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
59 {"engine_impl", OPT_ENGINE_IMPL, '-',
60 "Also use engine given by -engine for crypto operations"},
62 {"sign", OPT_SIGN, '-', "Sign input data with private key"},
63 {"verify", OPT_VERIFY, '-', "Verify with public key"},
64 {"encrypt", OPT_ENCRYPT, '-', "Encrypt input data with public key"},
65 {"decrypt", OPT_DECRYPT, '-', "Decrypt input data with private key"},
66 {"derive", OPT_DERIVE, '-', "Derive shared secret"},
70 {"in", OPT_IN, '<', "Input file - default stdin"},
71 {"rawin", OPT_RAWIN, '-', "Indicate the input data is in raw form"},
72 {"pubin", OPT_PUBIN, '-', "Input is a public key"},
73 {"inkey", OPT_INKEY, 's', "Input private key file"},
74 {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
75 {"peerkey", OPT_PEERKEY, 's', "Peer key file used in key derivation"},
76 {"peerform", OPT_PEERFORM, 'E', "Peer key format (DER/PEM/P12/ENGINE)"},
77 {"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
78 {"rev", OPT_REV, '-', "Reverse the order of the input buffer"},
79 {"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
80 {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
82 OPT_SECTION("Output"),
83 {"out", OPT_OUT, '>', "Output file - default stdout"},
84 {"asn1parse", OPT_ASN1PARSE, '-', "asn1parse the output data"},
85 {"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
86 {"verifyrecover", OPT_VERIFYRECOVER, '-',
87 "Verify with public key, recover original data"},
89 OPT_SECTION("Signing/Derivation"),
90 {"digest", OPT_DIGEST, 's',
91 "Specify the digest algorithm when signing the raw input data"},
92 {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
93 {"pkeyopt_passin", OPT_PKEYOPT_PASSIN, 's',
94 "Public key option that is read as a passphrase argument opt:passphrase"},
95 {"kdf", OPT_KDF, 's', "Use KDF algorithm"},
96 {"kdflen", OPT_KDFLEN, 'p', "KDF algorithm output length"},
103 int pkeyutl_main(int argc, char **argv)
106 BIO *in = NULL, *out = NULL;
108 EVP_PKEY_CTX *ctx = NULL;
109 EVP_PKEY *pkey = NULL;
110 char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
111 char hexdump = 0, asn1parse = 0, rev = 0, *prog;
112 unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
114 int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform = FORMAT_PEM;
115 int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
117 int ret = 1, rv = -1;
119 const char *inkey = NULL;
120 const char *peerkey = NULL;
121 const char *kdfalg = NULL, *digestname = NULL;
123 STACK_OF(OPENSSL_STRING) *pkeyopts = NULL;
124 STACK_OF(OPENSSL_STRING) *pkeyopts_passin = NULL;
126 EVP_MD_CTX *mctx = NULL;
128 OSSL_LIB_CTX *libctx = app_get0_libctx();
130 prog = opt_init(argc, argv, pkeyutl_options);
131 while ((o = opt_next()) != OPT_EOF) {
136 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
139 opt_help(pkeyutl_options);
151 case OPT_ENGINE_IMPL:
161 passinarg = opt_arg();
164 if (!opt_format(opt_arg(), OPT_FMT_ANY, &peerform))
168 if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
176 conf = app_load_config_modules(opt_arg());
181 if (!opt_provider(o))
185 e = setup_engine(opt_arg(), 0);
188 key_type = KEY_PUBKEY;
200 pkey_op = EVP_PKEY_OP_SIGN;
203 pkey_op = EVP_PKEY_OP_VERIFY;
205 case OPT_VERIFYRECOVER:
206 pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
209 pkey_op = EVP_PKEY_OP_ENCRYPT;
212 pkey_op = EVP_PKEY_OP_DECRYPT;
215 pkey_op = EVP_PKEY_OP_DERIVE;
218 pkey_op = EVP_PKEY_OP_DERIVE;
223 kdflen = atoi(opt_arg());
229 if ((pkeyopts == NULL &&
230 (pkeyopts = sk_OPENSSL_STRING_new_null()) == NULL) ||
231 sk_OPENSSL_STRING_push(pkeyopts, opt_arg()) == 0) {
232 BIO_puts(bio_err, "out of memory\n");
236 case OPT_PKEYOPT_PASSIN:
237 if ((pkeyopts_passin == NULL &&
238 (pkeyopts_passin = sk_OPENSSL_STRING_new_null()) == NULL) ||
239 sk_OPENSSL_STRING_push(pkeyopts_passin, opt_arg()) == 0) {
240 BIO_puts(bio_err, "out of memory\n");
248 digestname = opt_arg();
253 /* No extra arguments. */
254 argc = opt_num_rest();
258 if (!app_RAND_load())
261 if (rawin && pkey_op != EVP_PKEY_OP_SIGN && pkey_op != EVP_PKEY_OP_VERIFY) {
263 "%s: -rawin can only be used with -sign or -verify\n",
268 if (digestname != NULL && !rawin) {
270 "%s: -digest can only be used with -rawin\n",
276 BIO_printf(bio_err, "%s: -rev cannot be used with raw input\n",
281 if (kdfalg != NULL) {
284 "%s: no KDF length given (-kdflen parameter).\n", prog);
287 } else if (inkey == NULL) {
289 "%s: no private key given (-inkey parameter).\n", prog);
291 } else if (peerkey != NULL && pkey_op != EVP_PKEY_OP_DERIVE) {
293 "%s: no peer key given (-peerkey parameter).\n", prog);
298 if ((mctx = EVP_MD_CTX_new()) == NULL) {
299 BIO_printf(bio_err, "Error: out of memory\n");
303 ctx = init_ctx(kdfalg, &keysize, inkey, keyform, key_type,
304 passinarg, pkey_op, e, engine_impl, rawin, &pkey,
305 mctx, digestname, libctx, app_get0_propq());
307 BIO_printf(bio_err, "%s: Error initializing context\n", prog);
308 ERR_print_errors(bio_err);
311 if (peerkey != NULL && !setup_peer(ctx, peerform, peerkey, e)) {
312 BIO_printf(bio_err, "%s: Error setting up peer key\n", prog);
313 ERR_print_errors(bio_err);
316 if (pkeyopts != NULL) {
317 int num = sk_OPENSSL_STRING_num(pkeyopts);
320 for (i = 0; i < num; ++i) {
321 const char *opt = sk_OPENSSL_STRING_value(pkeyopts, i);
323 if (pkey_ctrl_string(ctx, opt) <= 0) {
324 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
326 ERR_print_errors(bio_err);
331 if (pkeyopts_passin != NULL) {
332 int num = sk_OPENSSL_STRING_num(pkeyopts_passin);
335 for (i = 0; i < num; i++) {
336 char *opt = sk_OPENSSL_STRING_value(pkeyopts_passin, i);
337 char *passin = strchr(opt, ':');
340 if (passin == NULL) {
341 /* Get password interactively */
342 char passwd_buf[4096];
345 BIO_snprintf(passwd_buf, sizeof(passwd_buf), "Enter %s: ", opt);
346 r = EVP_read_pw_string(passwd_buf, sizeof(passwd_buf) - 1,
350 BIO_puts(bio_err, "user abort\n");
352 BIO_puts(bio_err, "entry failed\n");
355 passwd = OPENSSL_strdup(passwd_buf);
356 if (passwd == NULL) {
357 BIO_puts(bio_err, "out of memory\n");
361 /* Get password as a passin argument: First split option name
362 * and passphrase argument into two strings */
365 if (app_passwd(passin, NULL, &passwd, NULL) == 0) {
366 BIO_printf(bio_err, "failed to get '%s'\n", opt);
371 if (EVP_PKEY_CTX_ctrl_str(ctx, opt, passwd) <= 0) {
372 BIO_printf(bio_err, "%s: Can't set parameter \"%s\":\n",
376 OPENSSL_free(passwd);
380 if (sigfile != NULL && (pkey_op != EVP_PKEY_OP_VERIFY)) {
382 "%s: Signature file specified for non verify\n", prog);
386 if (sigfile == NULL && (pkey_op == EVP_PKEY_OP_VERIFY)) {
388 "%s: No signature file specified for verify\n", prog);
392 if (pkey_op != EVP_PKEY_OP_DERIVE) {
393 in = bio_open_default(infile, 'r', FORMAT_BINARY);
394 if (infile != NULL) {
397 if (stat(infile, &st) == 0 && st.st_size <= INT_MAX)
398 filesize = (int)st.st_size;
403 out = bio_open_default(outfile, 'w', FORMAT_BINARY);
407 if (sigfile != NULL) {
408 BIO *sigbio = BIO_new_file(sigfile, "rb");
410 if (sigbio == NULL) {
411 BIO_printf(bio_err, "Can't open signature file %s\n", sigfile);
414 siglen = bio_to_mem(&sig, keysize * 10, sigbio);
417 BIO_printf(bio_err, "Error reading signature data\n");
422 /* Raw input data is handled elsewhere */
423 if (in != NULL && !rawin) {
424 /* Read the input data */
425 buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
427 BIO_printf(bio_err, "Error reading input Data\n");
433 size_t l = (size_t)buf_inlen;
434 for (i = 0; i < l / 2; i++) {
436 buf_in[i] = buf_in[l - 1 - i];
437 buf_in[l - 1 - i] = ctmp;
442 /* Sanity check the input if the input is not raw */
444 && buf_inlen > EVP_MAX_MD_SIZE
445 && (pkey_op == EVP_PKEY_OP_SIGN
446 || pkey_op == EVP_PKEY_OP_VERIFY)) {
448 "Error: The input data looks too long to be a hash\n");
452 if (pkey_op == EVP_PKEY_OP_VERIFY) {
454 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, sig, siglen,
457 rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
458 buf_in, (size_t)buf_inlen);
461 BIO_puts(out, "Signature Verified Successfully\n");
464 BIO_puts(out, "Signature Verification Failure\n");
473 /* rawin allocates the buffer in do_raw_keyop() */
474 rv = do_raw_keyop(pkey_op, mctx, pkey, in, filesize, NULL, 0,
475 &buf_out, (size_t *)&buf_outlen);
477 rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
478 buf_in, (size_t)buf_inlen);
479 if (rv > 0 && buf_outlen != 0) {
480 buf_out = app_malloc(buf_outlen, "buffer output");
481 rv = do_keyop(ctx, pkey_op,
482 buf_out, (size_t *)&buf_outlen,
483 buf_in, (size_t)buf_inlen);
488 if (pkey_op != EVP_PKEY_OP_DERIVE) {
489 BIO_puts(bio_err, "Public Key operation error\n");
491 BIO_puts(bio_err, "Key derivation failed\n");
493 ERR_print_errors(bio_err);
499 if (!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
500 ERR_print_errors(bio_err);
501 } else if (hexdump) {
502 BIO_dump(out, (char *)buf_out, buf_outlen);
504 BIO_write(out, buf_out, buf_outlen);
508 EVP_MD_CTX_free(mctx);
509 EVP_PKEY_CTX_free(ctx);
513 OPENSSL_free(buf_in);
514 OPENSSL_free(buf_out);
516 sk_OPENSSL_STRING_free(pkeyopts);
517 sk_OPENSSL_STRING_free(pkeyopts_passin);
522 static EVP_PKEY_CTX *init_ctx(const char *kdfalg, int *pkeysize,
523 const char *keyfile, int keyform, int key_type,
524 char *passinarg, int pkey_op, ENGINE *e,
525 const int engine_impl, int rawin,
526 EVP_PKEY **ppkey, EVP_MD_CTX *mctx, const char *digestname,
527 OSSL_LIB_CTX *libctx, const char *propq)
529 EVP_PKEY *pkey = NULL;
530 EVP_PKEY_CTX *ctx = NULL;
536 if (((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
537 || (pkey_op == EVP_PKEY_OP_DERIVE))
538 && (key_type != KEY_PRIVKEY && kdfalg == NULL)) {
539 BIO_printf(bio_err, "A private key is needed for this operation\n");
542 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
543 BIO_printf(bio_err, "Error getting password\n");
548 pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
552 pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "public key");
556 x = load_cert(keyfile, "Certificate");
558 pkey = X509_get_pubkey(x);
568 #ifndef OPENSSL_NO_ENGINE
573 if (kdfalg != NULL) {
574 int kdfnid = OBJ_sn2nid(kdfalg);
576 if (kdfnid == NID_undef) {
577 kdfnid = OBJ_ln2nid(kdfalg);
578 if (kdfnid == NID_undef) {
579 BIO_printf(bio_err, "The given KDF \"%s\" is unknown.\n",
585 ctx = EVP_PKEY_CTX_new_id(kdfnid, impl);
587 ctx = EVP_PKEY_CTX_new_from_name(libctx, kdfalg, propq);
592 *pkeysize = EVP_PKEY_size(pkey);
594 ctx = EVP_PKEY_CTX_new(pkey, impl);
596 ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
606 EVP_MD_CTX_set_pkey_ctx(mctx, ctx);
609 case EVP_PKEY_OP_SIGN:
610 rv = EVP_DigestSignInit_ex(mctx, NULL, digestname, libctx, propq,
614 case EVP_PKEY_OP_VERIFY:
615 rv = EVP_DigestVerifyInit_ex(mctx, NULL, digestname, libctx, propq,
622 case EVP_PKEY_OP_SIGN:
623 rv = EVP_PKEY_sign_init(ctx);
626 case EVP_PKEY_OP_VERIFY:
627 rv = EVP_PKEY_verify_init(ctx);
630 case EVP_PKEY_OP_VERIFYRECOVER:
631 rv = EVP_PKEY_verify_recover_init(ctx);
634 case EVP_PKEY_OP_ENCRYPT:
635 rv = EVP_PKEY_encrypt_init(ctx);
638 case EVP_PKEY_OP_DECRYPT:
639 rv = EVP_PKEY_decrypt_init(ctx);
642 case EVP_PKEY_OP_DERIVE:
643 rv = EVP_PKEY_derive_init(ctx);
649 EVP_PKEY_CTX_free(ctx);
654 OPENSSL_free(passin);
659 static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file,
662 EVP_PKEY *peer = NULL;
663 ENGINE *engine = NULL;
666 if (peerform == FORMAT_ENGINE)
668 peer = load_pubkey(file, peerform, 0, NULL, engine, "peer key");
670 BIO_printf(bio_err, "Error reading peer key %s\n", file);
671 ERR_print_errors(bio_err);
675 ret = EVP_PKEY_derive_set_peer(ctx, peer);
679 ERR_print_errors(bio_err);
683 static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
684 unsigned char *out, size_t *poutlen,
685 const unsigned char *in, size_t inlen)
689 case EVP_PKEY_OP_VERIFYRECOVER:
690 rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
693 case EVP_PKEY_OP_SIGN:
694 rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
697 case EVP_PKEY_OP_ENCRYPT:
698 rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
701 case EVP_PKEY_OP_DECRYPT:
702 rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
705 case EVP_PKEY_OP_DERIVE:
706 rv = EVP_PKEY_derive(ctx, out, poutlen);
713 #define TBUF_MAXSIZE 2048
715 static int do_raw_keyop(int pkey_op, EVP_MD_CTX *mctx,
716 EVP_PKEY *pkey, BIO *in,
717 int filesize, unsigned char *sig, int siglen,
718 unsigned char **out, size_t *poutlen)
721 unsigned char tbuf[TBUF_MAXSIZE];
722 unsigned char *mbuf = NULL;
725 /* Some algorithms only support oneshot digests */
726 if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519
727 || EVP_PKEY_id(pkey) == EVP_PKEY_ED448) {
730 "Error: unable to determine file size for oneshot operation\n");
733 mbuf = app_malloc(filesize, "oneshot sign/verify buffer");
735 case EVP_PKEY_OP_VERIFY:
736 buf_len = BIO_read(in, mbuf, filesize);
737 if (buf_len != filesize) {
738 BIO_printf(bio_err, "Error reading raw input data\n");
741 rv = EVP_DigestVerify(mctx, sig, (size_t)siglen, mbuf, buf_len);
743 case EVP_PKEY_OP_SIGN:
744 buf_len = BIO_read(in, mbuf, filesize);
745 if (buf_len != filesize) {
746 BIO_printf(bio_err, "Error reading raw input data\n");
749 rv = EVP_DigestSign(mctx, NULL, poutlen, mbuf, buf_len);
750 if (rv == 1 && out != NULL) {
751 *out = app_malloc(*poutlen, "buffer output");
752 rv = EVP_DigestSign(mctx, *out, poutlen, mbuf, buf_len);
760 case EVP_PKEY_OP_VERIFY:
762 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
766 BIO_printf(bio_err, "Error reading raw input data\n");
769 rv = EVP_DigestVerifyUpdate(mctx, tbuf, (size_t)buf_len);
771 BIO_printf(bio_err, "Error verifying raw input data\n");
775 rv = EVP_DigestVerifyFinal(mctx, sig, (size_t)siglen);
777 case EVP_PKEY_OP_SIGN:
779 buf_len = BIO_read(in, tbuf, TBUF_MAXSIZE);
783 BIO_printf(bio_err, "Error reading raw input data\n");
786 rv = EVP_DigestSignUpdate(mctx, tbuf, (size_t)buf_len);
788 BIO_printf(bio_err, "Error signing raw input data\n");
792 rv = EVP_DigestSignFinal(mctx, NULL, poutlen);
793 if (rv == 1 && out != NULL) {
794 *out = app_malloc(*poutlen, "buffer output");
795 rv = EVP_DigestSignFinal(mctx, *out, poutlen);