2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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
11 * Copyright (c) 2002 Bob Beck <beck@openbsd.org>
12 * Copyright (c) 2002 Theo de Raadt
13 * Copyright (c) 2002 Markus Friedl
14 * Copyright (c) 2012 Nikos Mavrogiannopoulos
15 * All rights reserved.
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution.
26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
27 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
28 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
29 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY
30 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
32 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
33 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
35 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <openssl/objects.h>
40 #include <internal/engine.h>
41 #include <openssl/evp.h>
42 #include <openssl/bn.h>
43 #include <openssl/crypto.h>
45 #if (defined(__unix__) || defined(unix)) && !defined(USG) && \
46 (defined(OpenBSD) || defined(__FreeBSD__) || defined(__DragonFly__))
47 # include <sys/param.h>
48 # if (OpenBSD >= 200112) || ((__FreeBSD_version >= 470101 && __FreeBSD_version < 500000) || __FreeBSD_version >= 500041) || defined(__DragonFly__)
49 # define HAVE_CRYPTODEV
51 # if (OpenBSD >= 200110)
52 # define HAVE_SYSLOG_R
56 #include <sys/types.h>
58 # include <crypto/cryptodev.h>
59 # include <sys/ioctl.h>
69 #include <openssl/dh.h>
70 #include <openssl/dsa.h>
71 #include <openssl/err.h>
72 #include <openssl/rsa.h>
74 #ifndef HAVE_CRYPTODEV
76 void engine_load_cryptodev_int(void)
78 /* This is a NOP on platforms without /dev/crypto */
84 struct dev_crypto_state {
85 struct session_op d_sess;
87 # ifdef USE_CRYPTODEV_DIGESTS
88 unsigned char digest_res[HASH_MAX_LEN];
94 static u_int32_t cryptodev_asymfeat = 0;
96 static RSA_METHOD *cryptodev_rsa;
97 # ifndef OPENSSL_NO_DSA
98 static DSA_METHOD *cryptodev_dsa = NULL;
100 # ifndef OPENSSL_NO_DH
101 static DH_METHOD *cryptodev_dh;
104 static int get_asym_dev_crypto(void);
105 static int open_dev_crypto(void);
106 static int get_dev_crypto(void);
107 static int get_cryptodev_ciphers(const int **cnids);
108 # ifdef USE_CRYPTODEV_DIGESTS
109 static int get_cryptodev_digests(const int **cnids);
111 static int cryptodev_usable_ciphers(const int **nids);
112 static int cryptodev_usable_digests(const int **nids);
113 static int cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
114 const unsigned char *in, size_t inl);
115 static int cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
116 const unsigned char *iv, int enc);
117 static int cryptodev_cleanup(EVP_CIPHER_CTX *ctx);
118 static int cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
119 const int **nids, int nid);
120 static int cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
121 const int **nids, int nid);
122 static int bn2crparam(const BIGNUM *a, struct crparam *crp);
123 static int crparam2bn(struct crparam *crp, BIGNUM *a);
124 static void zapparams(struct crypt_kop *kop);
125 static int cryptodev_asym(struct crypt_kop *kop, int rlen, BIGNUM *r,
126 int slen, BIGNUM *s);
128 static int cryptodev_bn_mod_exp(BIGNUM *r, const BIGNUM *a,
129 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
131 static int cryptodev_rsa_nocrt_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
133 static int cryptodev_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
135 # ifndef OPENSSL_NO_DSA
136 static int cryptodev_dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, const BIGNUM *a,
137 const BIGNUM *p, const BIGNUM *m,
138 BN_CTX *ctx, BN_MONT_CTX *m_ctx);
139 static int cryptodev_dsa_dsa_mod_exp(DSA *dsa, BIGNUM *t1, const BIGNUM *g,
140 const BIGNUM *u1, const BIGNUM *pub_key,
141 const BIGNUM *u2, const BIGNUM *p,
142 BN_CTX *ctx, BN_MONT_CTX *mont);
143 static DSA_SIG *cryptodev_dsa_do_sign(const unsigned char *dgst, int dlen,
145 static int cryptodev_dsa_verify(const unsigned char *dgst, int dgst_len,
146 DSA_SIG *sig, DSA *dsa);
148 # ifndef OPENSSL_NO_DH
149 static int cryptodev_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
150 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
152 static int cryptodev_dh_compute_key(unsigned char *key, const BIGNUM *pub_key,
155 static int cryptodev_ctrl(ENGINE *e, int cmd, long i, void *p,
157 void engine_load_cryptodev_int(void);
159 static const ENGINE_CMD_DEFN cryptodev_defns[] = {
170 CRYPTO_ARC4, NID_rc4, 0, 16,
173 CRYPTO_DES_CBC, NID_des_cbc, 8, 8,
176 CRYPTO_3DES_CBC, NID_des_ede3_cbc, 8, 24,
179 CRYPTO_AES_CBC, NID_aes_128_cbc, 16, 16,
182 CRYPTO_AES_CBC, NID_aes_192_cbc, 16, 24,
185 CRYPTO_AES_CBC, NID_aes_256_cbc, 16, 32,
187 # ifdef CRYPTO_AES_CTR
189 CRYPTO_AES_CTR, NID_aes_128_ctr, 14, 16,
192 CRYPTO_AES_CTR, NID_aes_192_ctr, 14, 24,
195 CRYPTO_AES_CTR, NID_aes_256_ctr, 14, 32,
199 CRYPTO_BLF_CBC, NID_bf_cbc, 8, 16,
202 CRYPTO_CAST_CBC, NID_cast5_cbc, 8, 16,
205 CRYPTO_SKIPJACK_CBC, NID_undef, 0, 0,
212 # ifdef USE_CRYPTODEV_DIGESTS
219 /* HMAC is not supported */
221 CRYPTO_MD5_HMAC, NID_hmacWithMD5, 16
224 CRYPTO_SHA1_HMAC, NID_hmacWithSHA1, 20
227 CRYPTO_SHA2_256_HMAC, NID_hmacWithSHA256, 32
230 CRYPTO_SHA2_384_HMAC, NID_hmacWithSHA384, 48
233 CRYPTO_SHA2_512_HMAC, NID_hmacWithSHA512, 64
237 CRYPTO_MD5, NID_md5, 16
240 CRYPTO_SHA1, NID_sha1, 20
243 CRYPTO_SHA2_256, NID_sha256, 32
246 CRYPTO_SHA2_384, NID_sha384, 48
249 CRYPTO_SHA2_512, NID_sha512, 64
258 * Return a fd if /dev/crypto seems usable, 0 otherwise.
260 static int open_dev_crypto(void)
265 if ((fd = open("/dev/crypto", O_RDWR, 0)) == -1)
268 if (fcntl(fd, F_SETFD, 1) == -1) {
277 static int get_dev_crypto(void)
281 if ((fd = open_dev_crypto()) == -1)
283 # ifndef CRIOGET_NOT_NEEDED
284 if (ioctl(fd, CRIOGET, &retfd) == -1)
288 if (fcntl(retfd, F_SETFD, 1) == -1) {
298 static void put_dev_crypto(int fd)
300 # ifndef CRIOGET_NOT_NEEDED
305 /* Caching version for asym operations */
306 static int get_asym_dev_crypto(void)
311 fd = get_dev_crypto();
316 * Find out what ciphers /dev/crypto will let us have a session for.
317 * XXX note, that some of these openssl doesn't deal with yet!
318 * returning them here is harmless, as long as we return NULL
319 * when asked for a handler in the cryptodev_engine_ciphers routine
321 static int get_cryptodev_ciphers(const int **cnids)
323 static int nids[CRYPTO_ALGORITHM_MAX];
324 struct session_op sess;
325 int fd, i, count = 0;
326 unsigned char fake_key[CRYPTO_CIPHER_MAX_KEY_LEN];
328 if ((fd = get_dev_crypto()) < 0) {
332 memset(&sess, 0, sizeof(sess));
333 sess.key = (void *)fake_key;
335 for (i = 0; ciphers[i].id && count < CRYPTO_ALGORITHM_MAX; i++) {
336 if (ciphers[i].nid == NID_undef)
338 sess.cipher = ciphers[i].id;
339 sess.keylen = ciphers[i].keylen;
341 if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
342 ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
343 nids[count++] = ciphers[i].nid;
354 # ifdef USE_CRYPTODEV_DIGESTS
356 * Find out what digests /dev/crypto will let us have a session for.
357 * XXX note, that some of these openssl doesn't deal with yet!
358 * returning them here is harmless, as long as we return NULL
359 * when asked for a handler in the cryptodev_engine_digests routine
361 static int get_cryptodev_digests(const int **cnids)
363 static int nids[CRYPTO_ALGORITHM_MAX];
364 unsigned char fake_key[CRYPTO_CIPHER_MAX_KEY_LEN];
365 struct session_op sess;
366 int fd, i, count = 0;
368 if ((fd = get_dev_crypto()) < 0) {
372 memset(&sess, 0, sizeof(sess));
373 sess.mackey = (void *)fake_key;
374 for (i = 0; digests[i].id && count < CRYPTO_ALGORITHM_MAX; i++) {
375 if (digests[i].nid == NID_undef)
377 sess.mac = digests[i].id;
378 sess.mackeylen = digests[i].digestlen;
380 if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
381 ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
382 nids[count++] = digests[i].nid;
395 * Find the useable ciphers|digests from dev/crypto - this is the first
396 * thing called by the engine init crud which determines what it
397 * can use for ciphers from this engine. We want to return
398 * only what we can do, anything else is handled by software.
400 * If we can't initialize the device to do anything useful for
401 * any reason, we want to return a NULL array, and 0 length,
402 * which forces everything to be done is software. By putting
403 * the initialization of the device in here, we ensure we can
404 * use this engine as the default, and if for whatever reason
405 * /dev/crypto won't do what we want it will just be done in
408 * This can (should) be greatly expanded to perhaps take into
409 * account speed of the device, and what we want to do.
410 * (although the disabling of particular alg's could be controlled
411 * by the device driver with sysctl's.) - this is where we
412 * want most of the decisions made about what we actually want
413 * to use from /dev/crypto.
415 static int cryptodev_usable_ciphers(const int **nids)
417 return (get_cryptodev_ciphers(nids));
420 static int cryptodev_usable_digests(const int **nids)
422 # ifdef USE_CRYPTODEV_DIGESTS
423 return (get_cryptodev_digests(nids));
426 * XXXX just disable all digests for now, because it sucks.
427 * we need a better way to decide this - i.e. I may not
428 * want digests on slow cards like hifn on fast machines,
429 * but might want them on slow or loaded machines, etc.
430 * will also want them when using crypto cards that don't
431 * suck moose gonads - would be nice to be able to decide something
432 * as reasonable default without having hackery that's card dependent.
433 * of course, the default should probably be just do everything,
434 * with perhaps a sysctl to turn algorithms off (or have them off
435 * by default) on cards that generally suck like the hifn.
443 cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
444 const unsigned char *in, size_t inl)
446 struct crypt_op cryp;
447 struct dev_crypto_state *state = EVP_CIPHER_CTX_get_cipher_data(ctx);
448 struct session_op *sess = &state->d_sess;
450 unsigned char save_iv[EVP_MAX_IV_LENGTH];
456 if ((inl % EVP_CIPHER_CTX_block_size(ctx)) != 0)
459 memset(&cryp, 0, sizeof(cryp));
461 cryp.ses = sess->ses;
464 cryp.src = (void *) in;
465 cryp.dst = (void *) out;
468 cryp.op = EVP_CIPHER_CTX_encrypting(ctx) ? COP_ENCRYPT : COP_DECRYPT;
470 if (EVP_CIPHER_CTX_iv_length(ctx) > 0) {
471 cryp.iv = (void *) EVP_CIPHER_CTX_iv(ctx);
472 if (!EVP_CIPHER_CTX_encrypting(ctx)) {
473 iiv = in + inl - EVP_CIPHER_CTX_iv_length(ctx);
474 memcpy(save_iv, iiv, EVP_CIPHER_CTX_iv_length(ctx));
479 if (ioctl(state->d_fd, CIOCCRYPT, &cryp) == -1) {
481 * XXX need better error handling this can fail for a number of
487 if (EVP_CIPHER_CTX_iv_length(ctx) > 0) {
488 if (EVP_CIPHER_CTX_encrypting(ctx))
489 iiv = out + inl - EVP_CIPHER_CTX_iv_length(ctx);
492 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iiv,
493 EVP_CIPHER_CTX_iv_length(ctx));
499 cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
500 const unsigned char *iv, int enc)
502 struct dev_crypto_state *state = EVP_CIPHER_CTX_get_cipher_data(ctx);
503 struct session_op *sess = &state->d_sess;
506 for (i = 0; ciphers[i].id; i++)
507 if (EVP_CIPHER_CTX_nid(ctx) == ciphers[i].nid &&
508 EVP_CIPHER_CTX_iv_length(ctx) <= ciphers[i].ivmax &&
509 EVP_CIPHER_CTX_key_length(ctx) == ciphers[i].keylen) {
510 cipher = ciphers[i].id;
514 if (!ciphers[i].id) {
519 memset(sess, 0, sizeof(*sess));
521 if ((state->d_fd = get_dev_crypto()) < 0)
524 sess->key = (void *) key;
525 sess->keylen = EVP_CIPHER_CTX_key_length(ctx);
526 sess->cipher = cipher;
528 if (ioctl(state->d_fd, CIOCGSESSION, sess) == -1) {
529 put_dev_crypto(state->d_fd);
537 * free anything we allocated earlier when initing a
538 * session, and close the session.
540 static int cryptodev_cleanup(EVP_CIPHER_CTX *ctx)
543 struct dev_crypto_state *state = EVP_CIPHER_CTX_get_cipher_data(ctx);
544 struct session_op *sess = &state->d_sess;
550 * XXX if this ioctl fails, something's wrong. the invoker may have called
551 * us with a bogus ctx, or we could have a device that for whatever
552 * reason just doesn't want to play ball - it's not clear what's right
553 * here - should this be an error? should it just increase a counter,
554 * hmm. For right now, we return 0 - I don't believe that to be "right".
555 * we could call the gorpy openssl lib error handlers that print messages
556 * to users of the library. hmm..
559 if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) == -1) {
564 put_dev_crypto(state->d_fd);
571 * libcrypto EVP stuff - this is how we get wired to EVP so the engine
572 * gets called when libcrypto requests a cipher NID.
575 static int cryptodev_cipher_ctrl(EVP_CIPHER_CTX *ctx, int type, int p1, void *p2)
577 struct dev_crypto_state *state = ctx->cipher_data;
578 struct session_op *sess = &state->d_sess;
580 if (type == EVP_CTRL_COPY) {
581 EVP_CIPHER_CTX *out = p2;
582 return cryptodev_init_key(out, sess->key, ctx->iv, 0);
589 static EVP_CIPHER *rc4_cipher = NULL;
590 static const EVP_CIPHER *cryptodev_rc4(void)
592 if (rc4_cipher == NULL) {
595 if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, 16)) == NULL
596 || !EVP_CIPHER_meth_set_iv_length(cipher, 0)
597 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH
598 | EVP_CIPH_CUSTOM_COPY)
599 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
600 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
601 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
602 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
603 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))) {
604 EVP_CIPHER_meth_free(cipher);
613 static EVP_CIPHER *des_cbc_cipher = NULL;
614 static const EVP_CIPHER *cryptodev_des_cbc(void)
616 if (des_cbc_cipher == NULL) {
619 if ((cipher = EVP_CIPHER_meth_new(NID_des_cbc, 8, 8)) == NULL
620 || !EVP_CIPHER_meth_set_iv_length(cipher, 8)
621 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE
622 | EVP_CIPH_CUSTOM_COPY)
623 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
624 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
625 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
626 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
627 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
628 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
629 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
630 EVP_CIPHER_meth_free(cipher);
633 des_cbc_cipher = cipher;
635 return des_cbc_cipher;
639 static EVP_CIPHER *des3_cbc_cipher = NULL;
640 static const EVP_CIPHER *cryptodev_3des_cbc(void)
642 if (des3_cbc_cipher == NULL) {
645 if ((cipher = EVP_CIPHER_meth_new(NID_des_ede3_cbc, 8, 24)) == NULL
646 || !EVP_CIPHER_meth_set_iv_length(cipher, 8)
647 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE
648 | EVP_CIPH_CUSTOM_COPY)
649 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
650 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
651 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
652 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
653 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
654 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
655 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
656 EVP_CIPHER_meth_free(cipher);
659 des3_cbc_cipher = cipher;
661 return des3_cbc_cipher;
664 static EVP_CIPHER *bf_cbc_cipher = NULL;
665 static const EVP_CIPHER *cryptodev_bf_cbc(void)
667 if (bf_cbc_cipher == NULL) {
670 if ((cipher = EVP_CIPHER_meth_new(NID_bf_cbc, 8, 16)) == NULL
671 || !EVP_CIPHER_meth_set_iv_length(cipher, 8)
672 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE
673 | EVP_CIPH_CUSTOM_COPY)
674 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
675 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
676 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
677 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
678 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
679 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
680 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
681 EVP_CIPHER_meth_free(cipher);
684 bf_cbc_cipher = cipher;
686 return bf_cbc_cipher;
689 static EVP_CIPHER *cast_cbc_cipher = NULL;
690 static const EVP_CIPHER *cryptodev_cast_cbc(void)
692 if (cast_cbc_cipher == NULL) {
695 if ((cipher = EVP_CIPHER_meth_new(NID_cast5_cbc, 8, 16)) == NULL
696 || !EVP_CIPHER_meth_set_iv_length(cipher, 8)
697 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE
698 | EVP_CIPH_CUSTOM_COPY)
699 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
700 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
701 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
702 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
703 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
704 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
705 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
706 EVP_CIPHER_meth_free(cipher);
709 cast_cbc_cipher = cipher;
711 return cast_cbc_cipher;
714 static EVP_CIPHER *aes_cbc_cipher = NULL;
715 static const EVP_CIPHER *cryptodev_aes_cbc(void)
717 if (aes_cbc_cipher == NULL) {
720 if ((cipher = EVP_CIPHER_meth_new(NID_aes_128_cbc, 16, 16)) == NULL
721 || !EVP_CIPHER_meth_set_iv_length(cipher, 16)
722 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE
723 | EVP_CIPH_CUSTOM_COPY)
724 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
725 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
726 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
727 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
728 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
729 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
730 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
731 EVP_CIPHER_meth_free(cipher);
734 aes_cbc_cipher = cipher;
736 return aes_cbc_cipher;
739 static EVP_CIPHER *aes_192_cbc_cipher = NULL;
740 static const EVP_CIPHER *cryptodev_aes_192_cbc(void)
742 if (aes_192_cbc_cipher == NULL) {
745 if ((cipher = EVP_CIPHER_meth_new(NID_aes_192_cbc, 16, 24)) == NULL
746 || !EVP_CIPHER_meth_set_iv_length(cipher, 16)
747 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE
748 | EVP_CIPH_CUSTOM_COPY)
749 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
750 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
751 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
752 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
753 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
754 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
755 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
756 EVP_CIPHER_meth_free(cipher);
759 aes_192_cbc_cipher = cipher;
761 return aes_192_cbc_cipher;
764 static EVP_CIPHER *aes_256_cbc_cipher = NULL;
765 static const EVP_CIPHER *cryptodev_aes_256_cbc(void)
767 if (aes_256_cbc_cipher == NULL) {
770 if ((cipher = EVP_CIPHER_meth_new(NID_aes_256_cbc, 16, 32)) == NULL
771 || !EVP_CIPHER_meth_set_iv_length(cipher, 16)
772 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE
773 | EVP_CIPH_CUSTOM_COPY)
774 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
775 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
776 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
777 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
778 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
779 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
780 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
781 EVP_CIPHER_meth_free(cipher);
784 aes_256_cbc_cipher = cipher;
786 return aes_256_cbc_cipher;
789 # ifdef CRYPTO_AES_CTR
790 static EVP_CIPHER *aes_ctr_cipher = NULL;
791 static const EVP_CIPHER *cryptodev_aes_ctr(void)
793 if (aes_ctr_cipher == NULL) {
796 if ((cipher = EVP_CIPHER_meth_new(NID_aes_128_ctr, 16, 16)) == NULL
797 || !EVP_CIPHER_meth_set_iv_length(cipher, 14)
798 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CTR_MODE
799 | EVP_CIPH_CUSTOM_COPY)
800 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
801 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
802 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
803 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
804 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
805 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
806 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
807 EVP_CIPHER_meth_free(cipher);
810 aes_ctr_cipher = cipher;
812 return aes_ctr_cipher;
815 static EVP_CIPHER *aes_192_ctr_cipher = NULL;
816 static const EVP_CIPHER *cryptodev_aes_192_ctr(void)
818 if (aes_192_ctr_cipher == NULL) {
821 if ((cipher = EVP_CIPHER_meth_new(NID_aes_192_ctr, 16, 24)) == NULL
822 || !EVP_CIPHER_meth_set_iv_length(cipher, 14)
823 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CTR_MODE
824 | EVP_CIPH_CUSTOM_COPY)
825 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
826 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
827 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
828 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
829 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
830 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
831 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
832 EVP_CIPHER_meth_free(cipher);
835 aes_192_ctr_cipher = cipher;
837 return aes_192_ctr_cipher;
840 static EVP_CIPHER *aes_256_ctr_cipher = NULL;
841 static const EVP_CIPHER *cryptodev_aes_256_ctr(void)
843 if (aes_256_ctr_cipher == NULL) {
846 if ((cipher = EVP_CIPHER_meth_new(NID_aes_256_ctr, 16, 32)) == NULL
847 || !EVP_CIPHER_meth_set_iv_length(cipher, 14)
848 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CTR_MODE
849 | EVP_CIPH_CUSTOM_COPY)
850 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
851 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
852 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
853 || !EVP_CIPHER_meth_set_ctrl(cipher, cryptodev_cipher_ctrl)
854 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
855 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
856 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
857 EVP_CIPHER_meth_free(cipher);
860 aes_256_ctr_cipher = cipher;
862 return aes_256_ctr_cipher;
866 * Registered by the ENGINE when used to find out how to deal with
867 * a particular NID in the ENGINE. this says what we'll do at the
868 * top level - note, that list is restricted by what we answer with
871 cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
872 const int **nids, int nid)
875 return (cryptodev_usable_ciphers(nids));
879 *cipher = cryptodev_rc4();
881 case NID_des_ede3_cbc:
882 *cipher = cryptodev_3des_cbc();
885 *cipher = cryptodev_des_cbc();
888 *cipher = cryptodev_bf_cbc();
891 *cipher = cryptodev_cast_cbc();
893 case NID_aes_128_cbc:
894 *cipher = cryptodev_aes_cbc();
896 case NID_aes_192_cbc:
897 *cipher = cryptodev_aes_192_cbc();
899 case NID_aes_256_cbc:
900 *cipher = cryptodev_aes_256_cbc();
902 # ifdef CRYPTO_AES_CTR
903 case NID_aes_128_ctr:
904 *cipher = cryptodev_aes_ctr();
906 case NID_aes_192_ctr:
907 *cipher = cryptodev_aes_192_ctr();
909 case NID_aes_256_ctr:
910 *cipher = cryptodev_aes_256_ctr();
917 return (*cipher != NULL);
920 # ifdef USE_CRYPTODEV_DIGESTS
922 /* convert digest type to cryptodev */
923 static int digest_nid_to_cryptodev(int nid)
927 for (i = 0; digests[i].id; i++)
928 if (digests[i].nid == nid)
929 return (digests[i].id);
933 static int cryptodev_digest_init(EVP_MD_CTX *ctx)
935 struct dev_crypto_state *state = EVP_MD_CTX_md_data(ctx);
936 struct session_op *sess = &state->d_sess;
939 if ((digest = digest_nid_to_cryptodev(EVP_MD_CTX_type(ctx))) == NID_undef) {
940 printf("cryptodev_digest_init: Can't get digest \n");
944 memset(state, 0, sizeof(*state));
946 if ((state->d_fd = get_dev_crypto()) < 0) {
947 printf("cryptodev_digest_init: Can't get Dev \n");
955 if (ioctl(state->d_fd, CIOCGSESSION, sess) < 0) {
956 put_dev_crypto(state->d_fd);
958 printf("cryptodev_digest_init: Open session failed\n");
965 static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data,
968 struct crypt_op cryp;
969 struct dev_crypto_state *state = EVP_MD_CTX_md_data(ctx);
970 struct session_op *sess = &state->d_sess;
973 if (!data || state->d_fd < 0) {
974 printf("cryptodev_digest_update: illegal inputs \n");
982 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
983 /* if application doesn't support one buffer */
985 OPENSSL_realloc(state->mac_data, state->mac_len + count);
988 printf("cryptodev_digest_update: realloc failed\n");
991 state->mac_data = new_mac_data;
993 memcpy(state->mac_data + state->mac_len, data, count);
994 state->mac_len += count;
999 memset(&cryp, 0, sizeof(cryp));
1001 cryp.ses = sess->ses;
1004 cryp.src = (void *) data;
1006 cryp.mac = (void *) state->digest_res;
1007 if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
1008 printf("cryptodev_digest_update: digest failed\n");
1014 static int cryptodev_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
1016 struct crypt_op cryp;
1017 struct dev_crypto_state *state = EVP_MD_CTX_md_data(ctx);
1018 struct session_op *sess = &state->d_sess;
1022 if (!md || state->d_fd < 0) {
1023 printf("cryptodev_digest_final: illegal input\n");
1027 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
1028 /* if application doesn't support one buffer */
1029 memset(&cryp, 0, sizeof(cryp));
1030 cryp.ses = sess->ses;
1032 cryp.len = state->mac_len;
1033 cryp.src = state->mac_data;
1035 cryp.mac = (void *) md;
1036 if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
1037 printf("cryptodev_digest_final: digest failed\n");
1044 memcpy(md, state->digest_res, EVP_MD_CTX_size(ctx));
1049 static int cryptodev_digest_cleanup(EVP_MD_CTX *ctx)
1052 struct dev_crypto_state *state = EVP_MD_CTX_md_data(ctx);
1053 struct session_op *sess = &state->d_sess;
1058 if (state->d_fd < 0) {
1059 printf("cryptodev_digest_cleanup: illegal input\n");
1063 OPENSSL_free(state->mac_data);
1064 state->mac_data = NULL;
1067 if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) < 0) {
1068 printf("cryptodev_digest_cleanup: failed to close session\n");
1073 put_dev_crypto(state->d_fd);
1079 static int cryptodev_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
1081 struct dev_crypto_state *fstate = EVP_MD_CTX_md_data(from);
1082 struct dev_crypto_state *dstate = EVP_MD_CTX_md_data(to);
1083 struct session_op *sess;
1086 if (dstate == NULL || fstate == NULL)
1089 memcpy(dstate, fstate, sizeof(struct dev_crypto_state));
1091 sess = &dstate->d_sess;
1093 digest = digest_nid_to_cryptodev(EVP_MD_CTX_type(to));
1095 sess->mackey = NULL;
1096 sess->mackeylen = 0;
1099 dstate->d_fd = get_dev_crypto();
1101 if (ioctl(dstate->d_fd, CIOCGSESSION, sess) < 0) {
1102 put_dev_crypto(dstate->d_fd);
1104 printf("cryptodev_digest_copy: Open session failed\n");
1108 if (fstate->mac_len != 0) {
1109 if (fstate->mac_data != NULL) {
1110 dstate->mac_data = OPENSSL_malloc(fstate->mac_len);
1111 if (dstate->mac_data == NULL) {
1112 printf("cryptodev_digest_copy: mac_data allocation failed\n");
1115 memcpy(dstate->mac_data, fstate->mac_data, fstate->mac_len);
1116 dstate->mac_len = fstate->mac_len;
1123 static EVP_MD *sha1_md = NULL;
1124 static const EVP_MD *cryptodev_sha1(void)
1126 if (sha1_md == NULL) {
1129 if ((md = EVP_MD_meth_new(NID_sha1, NID_undef)) == NULL
1130 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1131 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1132 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1133 || !EVP_MD_meth_set_app_datasize(md,
1134 sizeof(struct dev_crypto_state))
1135 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1136 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1137 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1138 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1139 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1140 EVP_MD_meth_free(md);
1148 static EVP_MD *sha256_md = NULL;
1149 static const EVP_MD *cryptodev_sha256(void)
1151 if (sha256_md == NULL) {
1154 if ((md = EVP_MD_meth_new(NID_sha256, NID_undef)) == NULL
1155 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1156 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1157 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1158 || !EVP_MD_meth_set_app_datasize(md,
1159 sizeof(struct dev_crypto_state))
1160 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1161 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1162 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1163 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1164 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1165 EVP_MD_meth_free(md);
1173 static EVP_MD *sha224_md = NULL;
1174 static const EVP_MD *cryptodev_sha224(void)
1176 if (sha224_md == NULL) {
1179 if ((md = EVP_MD_meth_new(NID_sha224, NID_undef)) == NULL
1180 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1181 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1182 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1183 || !EVP_MD_meth_set_app_datasize(md,
1184 sizeof(struct dev_crypto_state))
1185 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1186 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1187 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1188 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1189 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1190 EVP_MD_meth_free(md);
1198 static EVP_MD *sha384_md = NULL;
1199 static const EVP_MD *cryptodev_sha384(void)
1201 if (sha384_md == NULL) {
1204 if ((md = EVP_MD_meth_new(NID_sha384, NID_undef)) == NULL
1205 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1206 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1207 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1208 || !EVP_MD_meth_set_app_datasize(md,
1209 sizeof(struct dev_crypto_state))
1210 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1211 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1212 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1213 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1214 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1215 EVP_MD_meth_free(md);
1223 static EVP_MD *sha512_md = NULL;
1224 static const EVP_MD *cryptodev_sha512(void)
1226 if (sha512_md == NULL) {
1229 if ((md = EVP_MD_meth_new(NID_sha512, NID_undef)) == NULL
1230 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1231 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1232 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1233 || !EVP_MD_meth_set_app_datasize(md,
1234 sizeof(struct dev_crypto_state))
1235 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1236 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1237 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1238 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1239 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1240 EVP_MD_meth_free(md);
1248 static EVP_MD *md5_md = NULL;
1249 static const EVP_MD *cryptodev_md5(void)
1251 if (md5_md == NULL) {
1254 if ((md = EVP_MD_meth_new(NID_md5, NID_undef)) == NULL
1255 || !EVP_MD_meth_set_result_size(md, 16 /* MD5_DIGEST_LENGTH */)
1256 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1257 || !EVP_MD_meth_set_input_blocksize(md, 64 /* MD5_CBLOCK */)
1258 || !EVP_MD_meth_set_app_datasize(md,
1259 sizeof(struct dev_crypto_state))
1260 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1261 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1262 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1263 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1264 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1265 EVP_MD_meth_free(md);
1273 # endif /* USE_CRYPTODEV_DIGESTS */
1276 cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
1277 const int **nids, int nid)
1280 return (cryptodev_usable_digests(nids));
1283 # ifdef USE_CRYPTODEV_DIGESTS
1285 *digest = cryptodev_md5();
1288 *digest = cryptodev_sha1();
1291 *digest = cryptodev_sha256();
1294 *digest = cryptodev_sha224();
1297 *digest = cryptodev_sha384();
1300 *digest = cryptodev_sha512();
1303 # endif /* USE_CRYPTODEV_DIGESTS */
1307 return (*digest != NULL);
1310 static int cryptodev_engine_destroy(ENGINE *e)
1312 EVP_CIPHER_meth_free(rc4_cipher);
1314 EVP_CIPHER_meth_free(des_cbc_cipher);
1315 des_cbc_cipher = NULL;
1316 EVP_CIPHER_meth_free(des3_cbc_cipher);
1317 des3_cbc_cipher = NULL;
1318 EVP_CIPHER_meth_free(bf_cbc_cipher);
1319 bf_cbc_cipher = NULL;
1320 EVP_CIPHER_meth_free(cast_cbc_cipher);
1321 cast_cbc_cipher = NULL;
1322 EVP_CIPHER_meth_free(aes_cbc_cipher);
1323 aes_cbc_cipher = NULL;
1324 EVP_CIPHER_meth_free(aes_192_cbc_cipher);
1325 aes_192_cbc_cipher = NULL;
1326 EVP_CIPHER_meth_free(aes_256_cbc_cipher);
1327 aes_256_cbc_cipher = NULL;
1328 # ifdef CRYPTO_AES_CTR
1329 EVP_CIPHER_meth_free(aes_ctr_cipher);
1330 aes_ctr_cipher = NULL;
1331 EVP_CIPHER_meth_free(aes_192_ctr_cipher);
1332 aes_192_ctr_cipher = NULL;
1333 EVP_CIPHER_meth_free(aes_256_ctr_cipher);
1334 aes_256_ctr_cipher = NULL;
1336 # ifdef USE_CRYPTODEV_DIGESTS
1337 EVP_MD_meth_free(sha1_md);
1339 EVP_MD_meth_free(sha256_md);
1341 EVP_MD_meth_free(sha224_md);
1343 EVP_MD_meth_free(sha384_md);
1345 EVP_MD_meth_free(sha512_md);
1347 EVP_MD_meth_free(md5_md);
1350 RSA_meth_free(cryptodev_rsa);
1351 cryptodev_rsa = NULL;
1352 # ifndef OPENSSL_NO_DSA
1353 DSA_meth_free(cryptodev_dsa);
1354 cryptodev_dsa = NULL;
1356 # ifndef OPENSSL_NO_DH
1357 DH_meth_free(cryptodev_dh);
1358 cryptodev_dh = NULL;
1364 * Convert a BIGNUM to the representation that /dev/crypto needs.
1365 * Upon completion of use, the caller is responsible for freeing
1368 static int bn2crparam(const BIGNUM *a, struct crparam *crp)
1370 ssize_t bytes, bits;
1376 bits = BN_num_bits(a);
1377 bytes = BN_num_bytes(a);
1379 b = OPENSSL_zalloc(bytes);
1383 crp->crp_p = (void *) b;
1384 crp->crp_nbits = bits;
1390 /* Convert a /dev/crypto parameter to a BIGNUM */
1391 static int crparam2bn(struct crparam *crp, BIGNUM *a)
1396 bytes = (crp->crp_nbits + 7) / 8;
1401 if ((pd = OPENSSL_malloc(bytes)) == NULL)
1404 for (i = 0; i < bytes; i++)
1405 pd[i] = crp->crp_p[bytes - i - 1];
1407 BN_bin2bn(pd, bytes, a);
1413 static void zapparams(struct crypt_kop *kop)
1417 for (i = 0; i < kop->crk_iparams + kop->crk_oparams; i++) {
1418 OPENSSL_free(kop->crk_param[i].crp_p);
1419 kop->crk_param[i].crp_p = NULL;
1420 kop->crk_param[i].crp_nbits = 0;
1425 cryptodev_asym(struct crypt_kop *kop, int rlen, BIGNUM *r, int slen,
1430 if ((fd = get_asym_dev_crypto()) < 0)
1434 kop->crk_param[kop->crk_iparams].crp_p = OPENSSL_zalloc(rlen);
1435 if (kop->crk_param[kop->crk_iparams].crp_p == NULL)
1437 kop->crk_param[kop->crk_iparams].crp_nbits = rlen * 8;
1441 kop->crk_param[kop->crk_iparams + 1].crp_p =
1442 OPENSSL_zalloc(slen);
1443 /* No need to free the kop->crk_iparams parameter if it was allocated,
1444 * callers of this routine have to free allocated parameters through
1445 * zapparams both in case of success and failure
1447 if (kop->crk_param[kop->crk_iparams+1].crp_p == NULL)
1449 kop->crk_param[kop->crk_iparams + 1].crp_nbits = slen * 8;
1453 if (ioctl(fd, CIOCKEY, kop) == 0) {
1455 crparam2bn(&kop->crk_param[kop->crk_iparams], r);
1457 crparam2bn(&kop->crk_param[kop->crk_iparams + 1], s);
1465 cryptodev_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
1466 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
1468 struct crypt_kop kop;
1472 * Currently, we know we can do mod exp iff we can do any asymmetric
1473 * operations at all.
1475 if (cryptodev_asymfeat == 0) {
1476 ret = BN_mod_exp(r, a, p, m, ctx);
1480 memset(&kop, 0, sizeof(kop));
1481 kop.crk_op = CRK_MOD_EXP;
1483 /* inputs: a^p % m */
1484 if (bn2crparam(a, &kop.crk_param[0]))
1486 if (bn2crparam(p, &kop.crk_param[1]))
1488 if (bn2crparam(m, &kop.crk_param[2]))
1490 kop.crk_iparams = 3;
1492 if (cryptodev_asym(&kop, BN_num_bytes(m), r, 0, NULL)) {
1493 const RSA_METHOD *meth = RSA_PKCS1_OpenSSL();
1494 printf("OCF asym process failed, Running in software\n");
1495 ret = RSA_meth_get_bn_mod_exp(meth)(r, a, p, m, ctx, in_mont);
1497 } else if (ECANCELED == kop.crk_status) {
1498 const RSA_METHOD *meth = RSA_PKCS1_OpenSSL();
1499 printf("OCF hardware operation cancelled. Running in Software\n");
1500 ret = RSA_meth_get_bn_mod_exp(meth)(r, a, p, m, ctx, in_mont);
1502 /* else cryptodev operation worked ok ==> ret = 1 */
1510 cryptodev_rsa_nocrt_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
1514 const BIGNUM *n = NULL;
1515 const BIGNUM *d = NULL;
1518 RSA_get0_key(rsa, &n, NULL, &d);
1519 r = cryptodev_bn_mod_exp(r0, I, d, n, ctx, NULL);
1525 cryptodev_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
1527 struct crypt_kop kop;
1529 const BIGNUM *p = NULL;
1530 const BIGNUM *q = NULL;
1531 const BIGNUM *dmp1 = NULL;
1532 const BIGNUM *dmq1 = NULL;
1533 const BIGNUM *iqmp = NULL;
1534 const BIGNUM *n = NULL;
1536 RSA_get0_factors(rsa, &p, &q);
1537 RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
1538 RSA_get0_key(rsa, &n, NULL, NULL);
1540 if (!p || !q || !dmp1 || !dmq1 || !iqmp) {
1541 /* XXX 0 means failure?? */
1545 memset(&kop, 0, sizeof(kop));
1546 kop.crk_op = CRK_MOD_EXP_CRT;
1547 /* inputs: rsa->p rsa->q I rsa->dmp1 rsa->dmq1 rsa->iqmp */
1548 if (bn2crparam(p, &kop.crk_param[0]))
1550 if (bn2crparam(q, &kop.crk_param[1]))
1552 if (bn2crparam(I, &kop.crk_param[2]))
1554 if (bn2crparam(dmp1, &kop.crk_param[3]))
1556 if (bn2crparam(dmq1, &kop.crk_param[4]))
1558 if (bn2crparam(iqmp, &kop.crk_param[5]))
1560 kop.crk_iparams = 6;
1562 if (cryptodev_asym(&kop, BN_num_bytes(n), r0, 0, NULL)) {
1563 const RSA_METHOD *meth = RSA_PKCS1_OpenSSL();
1564 printf("OCF asym process failed, running in Software\n");
1565 ret = RSA_meth_get_mod_exp(meth)(r0, I, rsa, ctx);
1567 } else if (ECANCELED == kop.crk_status) {
1568 const RSA_METHOD *meth = RSA_PKCS1_OpenSSL();
1569 printf("OCF hardware operation cancelled. Running in Software\n");
1570 ret = RSA_meth_get_mod_exp(meth)(r0, I, rsa, ctx);
1572 /* else cryptodev operation worked ok ==> ret = 1 */
1579 # ifndef OPENSSL_NO_DSA
1581 cryptodev_dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
1582 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
1584 return cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx);
1588 cryptodev_dsa_dsa_mod_exp(DSA *dsa, BIGNUM *t1, const BIGNUM *g,
1589 const BIGNUM *u1, const BIGNUM *pub_key,
1590 const BIGNUM *u2, const BIGNUM *p, BN_CTX *ctx,
1593 const BIGNUM *dsag, *dsap, *dsapub_key;
1596 const DSA_METHOD *meth;
1597 int (*bn_mod_exp)(DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
1598 BN_CTX *, BN_MONT_CTX *);
1604 /* v = ( g^u1 * y^u2 mod p ) mod q */
1605 /* let t1 = g ^ u1 mod p */
1608 DSA_get0_pqg(dsa, &dsap, NULL, &dsag);
1609 DSA_get0_key(dsa, &dsapub_key, NULL);
1611 meth = DSA_get_method(dsa);
1614 bn_mod_exp = DSA_meth_get_bn_mod_exp(meth);
1615 if (bn_mod_exp == NULL)
1618 if (!bn_mod_exp(dsa, t1, dsag, u1, dsap, ctx, mont))
1621 /* let t2 = y ^ u2 mod p */
1622 if (!bn_mod_exp(dsa, t2, dsapub_key, u2, dsap, ctx, mont))
1624 /* let t1 = t1 * t2 mod p */
1625 if (!BN_mod_mul(t1, t1, t2, dsap, ctx))
1634 static DSA_SIG *cryptodev_dsa_do_sign(const unsigned char *dgst, int dlen,
1637 struct crypt_kop kop;
1639 const BIGNUM *dsap = NULL, *dsaq = NULL, *dsag = NULL;
1640 const BIGNUM *priv_key = NULL;
1641 DSA_SIG *dsasig, *dsaret = NULL;
1643 dsasig = DSA_SIG_new();
1647 memset(&kop, 0, sizeof(kop));
1648 kop.crk_op = CRK_DSA_SIGN;
1650 /* inputs: dgst dsa->p dsa->q dsa->g dsa->priv_key */
1651 kop.crk_param[0].crp_p = (void *) dgst;
1652 kop.crk_param[0].crp_nbits = dlen * 8;
1653 DSA_get0_pqg(dsa, &dsap, &dsaq, &dsag);
1654 DSA_get0_key(dsa, NULL, &priv_key);
1655 if (bn2crparam(dsap, &kop.crk_param[1]))
1657 if (bn2crparam(dsaq, &kop.crk_param[2]))
1659 if (bn2crparam(dsag, &kop.crk_param[3]))
1661 if (bn2crparam(priv_key, &kop.crk_param[4]))
1663 kop.crk_iparams = 5;
1671 if (cryptodev_asym(&kop, BN_num_bytes(dsaq), r,
1672 BN_num_bytes(dsaq), s) == 0) {
1673 DSA_SIG_set0(dsasig, r, s);
1676 dsaret = DSA_meth_get_sign(DSA_OpenSSL())(dgst, dlen, dsa);
1679 if (dsaret != dsasig)
1680 DSA_SIG_free(dsasig);
1681 kop.crk_param[0].crp_p = NULL;
1687 cryptodev_dsa_verify(const unsigned char *dgst, int dlen,
1688 DSA_SIG *sig, DSA *dsa)
1690 struct crypt_kop kop;
1692 const BIGNUM *pr, *ps, *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL;
1694 memset(&kop, 0, sizeof(kop));
1695 kop.crk_op = CRK_DSA_VERIFY;
1697 /* inputs: dgst dsa->p dsa->q dsa->g dsa->pub_key sig->r sig->s */
1698 kop.crk_param[0].crp_p = (void *) dgst;
1699 kop.crk_param[0].crp_nbits = dlen * 8;
1700 DSA_get0_pqg(dsa, &p, &q, &g);
1701 if (bn2crparam(p, &kop.crk_param[1]))
1703 if (bn2crparam(q, &kop.crk_param[2]))
1705 if (bn2crparam(g, &kop.crk_param[3]))
1707 DSA_get0_key(dsa, &pub_key, NULL);
1708 if (bn2crparam(pub_key, &kop.crk_param[4]))
1710 DSA_SIG_get0(sig, &pr, &ps);
1711 if (bn2crparam(pr, &kop.crk_param[5]))
1713 if (bn2crparam(ps, &kop.crk_param[6]))
1715 kop.crk_iparams = 7;
1717 if (cryptodev_asym(&kop, 0, NULL, 0, NULL) == 0) {
1719 * OCF success value is 0, if not zero, change dsaret to fail
1721 if (0 != kop.crk_status)
1724 dsaret = DSA_meth_get_verify(DSA_OpenSSL())(dgst, dlen, sig, dsa);
1727 kop.crk_param[0].crp_p = NULL;
1733 # ifndef OPENSSL_NO_DH
1735 cryptodev_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
1736 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
1739 return (cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx));
1743 cryptodev_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh)
1745 struct crypt_kop kop;
1748 const BIGNUM *p = NULL;
1749 const BIGNUM *priv_key = NULL;
1751 if ((fd = get_asym_dev_crypto()) < 0) {
1752 const DH_METHOD *meth = DH_OpenSSL();
1754 return DH_meth_get_compute_key(meth)(key, pub_key, dh);
1757 DH_get0_pqg(dh, &p, NULL, NULL);
1758 DH_get0_key(dh, NULL, &priv_key);
1760 keylen = BN_num_bits(p);
1762 memset(&kop, 0, sizeof(kop));
1763 kop.crk_op = CRK_DH_COMPUTE_KEY;
1765 /* inputs: dh->priv_key pub_key dh->p key */
1766 if (bn2crparam(priv_key, &kop.crk_param[0]))
1768 if (bn2crparam(pub_key, &kop.crk_param[1]))
1770 if (bn2crparam(p, &kop.crk_param[2]))
1772 kop.crk_iparams = 3;
1774 kop.crk_param[3].crp_p = (void *) key;
1775 kop.crk_param[3].crp_nbits = keylen * 8;
1776 kop.crk_oparams = 1;
1778 if (ioctl(fd, CIOCKEY, &kop) == -1) {
1779 const DH_METHOD *meth = DH_OpenSSL();
1781 dhret = DH_meth_get_compute_key(meth)(key, pub_key, dh);
1784 kop.crk_param[3].crp_p = NULL;
1789 # endif /* ndef OPENSSL_NO_DH */
1792 * ctrl right now is just a wrapper that doesn't do much
1793 * but I expect we'll want some options soon.
1796 cryptodev_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
1798 # ifdef HAVE_SYSLOG_R
1799 struct syslog_data sd = SYSLOG_DATA_INIT;
1804 # ifdef HAVE_SYSLOG_R
1805 syslog_r(LOG_ERR, &sd, "cryptodev_ctrl: unknown command %d", cmd);
1807 syslog(LOG_ERR, "cryptodev_ctrl: unknown command %d", cmd);
1814 void engine_load_cryptodev_int(void)
1816 ENGINE *engine = ENGINE_new();
1821 if ((fd = get_dev_crypto()) < 0) {
1822 ENGINE_free(engine);
1827 * find out what asymmetric crypto algorithms we support
1829 if (ioctl(fd, CIOCASYMFEAT, &cryptodev_asymfeat) == -1) {
1831 ENGINE_free(engine);
1836 if (!ENGINE_set_id(engine, "cryptodev") ||
1837 !ENGINE_set_name(engine, "cryptodev engine") ||
1838 !ENGINE_set_destroy_function(engine, cryptodev_engine_destroy) ||
1839 !ENGINE_set_ciphers(engine, cryptodev_engine_ciphers) ||
1840 !ENGINE_set_digests(engine, cryptodev_engine_digests) ||
1841 !ENGINE_set_ctrl_function(engine, cryptodev_ctrl) ||
1842 !ENGINE_set_cmd_defns(engine, cryptodev_defns)) {
1843 ENGINE_free(engine);
1847 cryptodev_rsa = RSA_meth_dup(RSA_PKCS1_OpenSSL());
1848 if (cryptodev_rsa != NULL) {
1849 RSA_meth_set1_name(cryptodev_rsa, "cryptodev RSA method");
1850 RSA_meth_set_flags(cryptodev_rsa, 0);
1851 if (ENGINE_set_RSA(engine, cryptodev_rsa)) {
1852 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1853 RSA_meth_set_bn_mod_exp(cryptodev_rsa, cryptodev_bn_mod_exp);
1854 if (cryptodev_asymfeat & CRF_MOD_EXP_CRT)
1855 RSA_meth_set_mod_exp(cryptodev_rsa, cryptodev_rsa_mod_exp);
1857 RSA_meth_set_mod_exp(cryptodev_rsa,
1858 cryptodev_rsa_nocrt_mod_exp);
1862 ENGINE_free(engine);
1866 # ifndef OPENSSL_NO_DSA
1867 cryptodev_dsa = DSA_meth_dup(DSA_OpenSSL());
1868 if (cryptodev_dsa != NULL) {
1869 DSA_meth_set1_name(cryptodev_dsa, "cryptodev DSA method");
1870 DSA_meth_set_flags(cryptodev_dsa, 0);
1871 if (ENGINE_set_DSA(engine, cryptodev_dsa)) {
1872 if (cryptodev_asymfeat & CRF_DSA_SIGN)
1873 DSA_meth_set_sign(cryptodev_dsa, cryptodev_dsa_do_sign);
1874 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1875 DSA_meth_set_bn_mod_exp(cryptodev_dsa,
1876 cryptodev_dsa_bn_mod_exp);
1877 DSA_meth_set_mod_exp(cryptodev_dsa, cryptodev_dsa_dsa_mod_exp);
1879 if (cryptodev_asymfeat & CRF_DSA_VERIFY)
1880 DSA_meth_set_verify(cryptodev_dsa, cryptodev_dsa_verify);
1883 ENGINE_free(engine);
1888 # ifndef OPENSSL_NO_DH
1889 cryptodev_dh = DH_meth_dup(DH_OpenSSL());
1890 if (cryptodev_dh != NULL) {
1891 DH_meth_set1_name(cryptodev_dh, "cryptodev DH method");
1892 DH_meth_set_flags(cryptodev_dh, 0);
1893 if (ENGINE_set_DH(engine, cryptodev_dh)) {
1894 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1895 DH_meth_set_bn_mod_exp(cryptodev_dh, cryptodev_mod_exp_dh);
1896 if (cryptodev_asymfeat & CRF_DH_COMPUTE_KEY)
1897 DH_meth_set_compute_key(cryptodev_dh,
1898 cryptodev_dh_compute_key);
1902 ENGINE_free(engine);
1908 ENGINE_free(engine);
1912 #endif /* HAVE_CRYPTODEV */