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.
576 static EVP_CIPHER *rc4_cipher = NULL;
577 static const EVP_CIPHER *cryptodev_rc4(void)
579 if (rc4_cipher == NULL) {
582 if ((cipher = EVP_CIPHER_meth_new(NID_rc4, 1, 16)) == NULL
583 || !EVP_CIPHER_meth_set_iv_length(cipher, 0)
584 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_VARIABLE_LENGTH)
585 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
586 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
587 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
588 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))) {
589 EVP_CIPHER_meth_free(cipher);
598 static EVP_CIPHER *des_cbc_cipher = NULL;
599 static const EVP_CIPHER *cryptodev_des_cbc(void)
601 if (des_cbc_cipher == NULL) {
604 if ((cipher = EVP_CIPHER_meth_new(NID_des_cbc, 8, 8)) == NULL
605 || !EVP_CIPHER_meth_set_iv_length(cipher, 8)
606 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE)
607 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
608 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
609 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
610 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
611 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
612 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
613 EVP_CIPHER_meth_free(cipher);
616 des_cbc_cipher = cipher;
618 return des_cbc_cipher;
622 static EVP_CIPHER *des3_cbc_cipher = NULL;
623 static const EVP_CIPHER *cryptodev_3des_cbc(void)
625 if (des3_cbc_cipher == NULL) {
628 if ((cipher = EVP_CIPHER_meth_new(NID_des_ede3_cbc, 8, 24)) == NULL
629 || !EVP_CIPHER_meth_set_iv_length(cipher, 8)
630 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE)
631 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
632 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
633 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
634 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
635 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
636 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
637 EVP_CIPHER_meth_free(cipher);
640 des3_cbc_cipher = cipher;
642 return des3_cbc_cipher;
645 static EVP_CIPHER *bf_cbc_cipher = NULL;
646 static const EVP_CIPHER *cryptodev_bf_cbc(void)
648 if (bf_cbc_cipher == NULL) {
651 if ((cipher = EVP_CIPHER_meth_new(NID_bf_cbc, 8, 16)) == NULL
652 || !EVP_CIPHER_meth_set_iv_length(cipher, 8)
653 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE)
654 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
655 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
656 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
657 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
658 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
659 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
660 EVP_CIPHER_meth_free(cipher);
663 bf_cbc_cipher = cipher;
665 return bf_cbc_cipher;
668 static EVP_CIPHER *cast_cbc_cipher = NULL;
669 static const EVP_CIPHER *cryptodev_cast_cbc(void)
671 if (cast_cbc_cipher == NULL) {
674 if ((cipher = EVP_CIPHER_meth_new(NID_cast5_cbc, 8, 16)) == NULL
675 || !EVP_CIPHER_meth_set_iv_length(cipher, 8)
676 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE)
677 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
678 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
679 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
680 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
681 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
682 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
683 EVP_CIPHER_meth_free(cipher);
686 cast_cbc_cipher = cipher;
688 return cast_cbc_cipher;
691 static EVP_CIPHER *aes_cbc_cipher = NULL;
692 static const EVP_CIPHER *cryptodev_aes_cbc(void)
694 if (aes_cbc_cipher == NULL) {
697 if ((cipher = EVP_CIPHER_meth_new(NID_aes_128_cbc, 16, 16)) == NULL
698 || !EVP_CIPHER_meth_set_iv_length(cipher, 16)
699 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE)
700 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
701 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
702 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
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 aes_cbc_cipher = cipher;
711 return aes_cbc_cipher;
714 static EVP_CIPHER *aes_192_cbc_cipher = NULL;
715 static const EVP_CIPHER *cryptodev_aes_192_cbc(void)
717 if (aes_192_cbc_cipher == NULL) {
720 if ((cipher = EVP_CIPHER_meth_new(NID_aes_192_cbc, 16, 24)) == NULL
721 || !EVP_CIPHER_meth_set_iv_length(cipher, 16)
722 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE)
723 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
724 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
725 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
726 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
727 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
728 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
729 EVP_CIPHER_meth_free(cipher);
732 aes_192_cbc_cipher = cipher;
734 return aes_192_cbc_cipher;
737 static EVP_CIPHER *aes_256_cbc_cipher = NULL;
738 static const EVP_CIPHER *cryptodev_aes_256_cbc(void)
740 if (aes_256_cbc_cipher == NULL) {
743 if ((cipher = EVP_CIPHER_meth_new(NID_aes_256_cbc, 16, 32)) == NULL
744 || !EVP_CIPHER_meth_set_iv_length(cipher, 16)
745 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CBC_MODE)
746 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
747 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
748 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
749 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
750 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
751 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
752 EVP_CIPHER_meth_free(cipher);
755 aes_256_cbc_cipher = cipher;
757 return aes_256_cbc_cipher;
760 # ifdef CRYPTO_AES_CTR
761 static EVP_CIPHER *aes_ctr_cipher = NULL;
762 static const EVP_CIPHER *cryptodev_aes_ctr(void)
764 if (aes_ctr_cipher == NULL) {
767 if ((cipher = EVP_CIPHER_meth_new(NID_aes_128_ctr, 16, 16)) == NULL
768 || !EVP_CIPHER_meth_set_iv_length(cipher, 14)
769 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CTR_MODE)
770 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
771 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
772 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
773 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
774 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
775 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
776 EVP_CIPHER_meth_free(cipher);
779 aes_ctr_cipher = cipher;
781 return aes_ctr_cipher;
784 static EVP_CIPHER *aes_192_ctr_cipher = NULL;
785 static const EVP_CIPHER *cryptodev_aes_192_ctr(void)
787 if (aes_192_ctr_cipher == NULL) {
790 if ((cipher = EVP_CIPHER_meth_new(NID_aes_192_ctr, 16, 24)) == NULL
791 || !EVP_CIPHER_meth_set_iv_length(cipher, 14)
792 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CTR_MODE)
793 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
794 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
795 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
796 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
797 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
798 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
799 EVP_CIPHER_meth_free(cipher);
802 aes_192_ctr_cipher = cipher;
804 return aes_192_ctr_cipher;
807 static EVP_CIPHER *aes_256_ctr_cipher = NULL;
808 static const EVP_CIPHER *cryptodev_aes_256_ctr(void)
810 if (aes_256_ctr_cipher == NULL) {
813 if ((cipher = EVP_CIPHER_meth_new(NID_aes_256_ctr, 16, 32)) == NULL
814 || !EVP_CIPHER_meth_set_iv_length(cipher, 14)
815 || !EVP_CIPHER_meth_set_flags(cipher, EVP_CIPH_CTR_MODE)
816 || !EVP_CIPHER_meth_set_init(cipher, cryptodev_init_key)
817 || !EVP_CIPHER_meth_set_do_cipher(cipher, cryptodev_cipher)
818 || !EVP_CIPHER_meth_set_cleanup(cipher, cryptodev_cleanup)
819 || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, sizeof(struct dev_crypto_state))
820 || !EVP_CIPHER_meth_set_set_asn1_params(cipher, EVP_CIPHER_set_asn1_iv)
821 || !EVP_CIPHER_meth_set_get_asn1_params(cipher, EVP_CIPHER_get_asn1_iv)) {
822 EVP_CIPHER_meth_free(cipher);
825 aes_256_ctr_cipher = cipher;
827 return aes_256_ctr_cipher;
831 * Registered by the ENGINE when used to find out how to deal with
832 * a particular NID in the ENGINE. this says what we'll do at the
833 * top level - note, that list is restricted by what we answer with
836 cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
837 const int **nids, int nid)
840 return (cryptodev_usable_ciphers(nids));
844 *cipher = cryptodev_rc4();
846 case NID_des_ede3_cbc:
847 *cipher = cryptodev_3des_cbc();
850 *cipher = cryptodev_des_cbc();
853 *cipher = cryptodev_bf_cbc();
856 *cipher = cryptodev_cast_cbc();
858 case NID_aes_128_cbc:
859 *cipher = cryptodev_aes_cbc();
861 case NID_aes_192_cbc:
862 *cipher = cryptodev_aes_192_cbc();
864 case NID_aes_256_cbc:
865 *cipher = cryptodev_aes_256_cbc();
867 # ifdef CRYPTO_AES_CTR
868 case NID_aes_128_ctr:
869 *cipher = cryptodev_aes_ctr();
871 case NID_aes_192_ctr:
872 *cipher = cryptodev_aes_192_ctr();
874 case NID_aes_256_ctr:
875 *cipher = cryptodev_aes_256_ctr();
882 return (*cipher != NULL);
885 # ifdef USE_CRYPTODEV_DIGESTS
887 /* convert digest type to cryptodev */
888 static int digest_nid_to_cryptodev(int nid)
892 for (i = 0; digests[i].id; i++)
893 if (digests[i].nid == nid)
894 return (digests[i].id);
898 static int cryptodev_digest_init(EVP_MD_CTX *ctx)
900 struct dev_crypto_state *state = EVP_MD_CTX_md_data(ctx);
901 struct session_op *sess = &state->d_sess;
904 if ((digest = digest_nid_to_cryptodev(EVP_MD_CTX_type(ctx))) == NID_undef) {
905 printf("cryptodev_digest_init: Can't get digest \n");
909 memset(state, 0, sizeof(*state));
911 if ((state->d_fd = get_dev_crypto()) < 0) {
912 printf("cryptodev_digest_init: Can't get Dev \n");
920 if (ioctl(state->d_fd, CIOCGSESSION, sess) < 0) {
921 put_dev_crypto(state->d_fd);
923 printf("cryptodev_digest_init: Open session failed\n");
930 static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data,
933 struct crypt_op cryp;
934 struct dev_crypto_state *state = EVP_MD_CTX_md_data(ctx);
935 struct session_op *sess = &state->d_sess;
938 if (!data || state->d_fd < 0) {
939 printf("cryptodev_digest_update: illegal inputs \n");
947 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
948 /* if application doesn't support one buffer */
950 OPENSSL_realloc(state->mac_data, state->mac_len + count);
953 printf("cryptodev_digest_update: realloc failed\n");
956 state->mac_data = new_mac_data;
958 memcpy(state->mac_data + state->mac_len, data, count);
959 state->mac_len += count;
964 memset(&cryp, 0, sizeof(cryp));
966 cryp.ses = sess->ses;
969 cryp.src = (void *) data;
971 cryp.mac = (void *) state->digest_res;
972 if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
973 printf("cryptodev_digest_update: digest failed\n");
979 static int cryptodev_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
981 struct crypt_op cryp;
982 struct dev_crypto_state *state = EVP_MD_CTX_md_data(ctx);
983 struct session_op *sess = &state->d_sess;
987 if (!md || state->d_fd < 0) {
988 printf("cryptodev_digest_final: illegal input\n");
992 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
993 /* if application doesn't support one buffer */
994 memset(&cryp, 0, sizeof(cryp));
995 cryp.ses = sess->ses;
997 cryp.len = state->mac_len;
998 cryp.src = state->mac_data;
1000 cryp.mac = (void *) md;
1001 if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
1002 printf("cryptodev_digest_final: digest failed\n");
1009 memcpy(md, state->digest_res, EVP_MD_CTX_size(ctx));
1014 static int cryptodev_digest_cleanup(EVP_MD_CTX *ctx)
1017 struct dev_crypto_state *state = EVP_MD_CTX_md_data(ctx);
1018 struct session_op *sess = &state->d_sess;
1023 if (state->d_fd < 0) {
1024 printf("cryptodev_digest_cleanup: illegal input\n");
1028 OPENSSL_free(state->mac_data);
1029 state->mac_data = NULL;
1032 if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) < 0) {
1033 printf("cryptodev_digest_cleanup: failed to close session\n");
1038 put_dev_crypto(state->d_fd);
1044 static int cryptodev_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
1046 struct dev_crypto_state *fstate = EVP_MD_CTX_md_data(from);
1047 struct dev_crypto_state *dstate = EVP_MD_CTX_md_data(to);
1048 struct session_op *sess;
1051 if (dstate == NULL || fstate == NULL)
1054 memcpy(dstate, fstate, sizeof(struct dev_crypto_state));
1056 sess = &dstate->d_sess;
1058 digest = digest_nid_to_cryptodev(EVP_MD_CTX_type(to));
1060 sess->mackey = NULL;
1061 sess->mackeylen = 0;
1064 dstate->d_fd = get_dev_crypto();
1066 if (ioctl(dstate->d_fd, CIOCGSESSION, sess) < 0) {
1067 put_dev_crypto(dstate->d_fd);
1069 printf("cryptodev_digest_copy: Open session failed\n");
1073 if (fstate->mac_len != 0) {
1074 if (fstate->mac_data != NULL) {
1075 dstate->mac_data = OPENSSL_malloc(fstate->mac_len);
1076 if (dstate->mac_data == NULL) {
1077 printf("cryptodev_digest_copy: mac_data allocation failed\n");
1080 memcpy(dstate->mac_data, fstate->mac_data, fstate->mac_len);
1081 dstate->mac_len = fstate->mac_len;
1088 static EVP_MD *sha1_md = NULL;
1089 static const EVP_MD *cryptodev_sha1(void)
1091 if (sha1_md == NULL) {
1094 if ((md = EVP_MD_meth_new(NID_sha1, NID_undef)) == NULL
1095 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1096 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1097 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1098 || !EVP_MD_meth_set_app_datasize(md,
1099 sizeof(struct dev_crypto_state))
1100 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1101 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1102 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1103 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1104 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1105 EVP_MD_meth_free(md);
1113 static EVP_MD *sha256_md = NULL;
1114 static const EVP_MD *cryptodev_sha256(void)
1116 if (sha256_md == NULL) {
1119 if ((md = EVP_MD_meth_new(NID_sha256, NID_undef)) == NULL
1120 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1121 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1122 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1123 || !EVP_MD_meth_set_app_datasize(md,
1124 sizeof(struct dev_crypto_state))
1125 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1126 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1127 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1128 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1129 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1130 EVP_MD_meth_free(md);
1138 static EVP_MD *sha224_md = NULL;
1139 static const EVP_MD *cryptodev_sha224(void)
1141 if (sha224_md == NULL) {
1144 if ((md = EVP_MD_meth_new(NID_sha224, NID_undef)) == NULL
1145 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1146 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1147 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1148 || !EVP_MD_meth_set_app_datasize(md,
1149 sizeof(struct dev_crypto_state))
1150 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1151 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1152 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1153 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1154 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1155 EVP_MD_meth_free(md);
1163 static EVP_MD *sha384_md = NULL;
1164 static const EVP_MD *cryptodev_sha384(void)
1166 if (sha384_md == NULL) {
1169 if ((md = EVP_MD_meth_new(NID_sha384, NID_undef)) == NULL
1170 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1171 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1172 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1173 || !EVP_MD_meth_set_app_datasize(md,
1174 sizeof(struct dev_crypto_state))
1175 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1176 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1177 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1178 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1179 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1180 EVP_MD_meth_free(md);
1188 static EVP_MD *sha512_md = NULL;
1189 static const EVP_MD *cryptodev_sha512(void)
1191 if (sha512_md == NULL) {
1194 if ((md = EVP_MD_meth_new(NID_sha512, NID_undef)) == NULL
1195 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
1196 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1197 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
1198 || !EVP_MD_meth_set_app_datasize(md,
1199 sizeof(struct dev_crypto_state))
1200 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1201 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1202 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1203 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1204 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1205 EVP_MD_meth_free(md);
1213 static EVP_MD *md5_md = NULL;
1214 static const EVP_MD *cryptodev_md5(void)
1216 if (md5_md == NULL) {
1219 if ((md = EVP_MD_meth_new(NID_md5, NID_undef)) == NULL
1220 || !EVP_MD_meth_set_result_size(md, 16 /* MD5_DIGEST_LENGTH */)
1221 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_ONESHOT)
1222 || !EVP_MD_meth_set_input_blocksize(md, 64 /* MD5_CBLOCK */)
1223 || !EVP_MD_meth_set_app_datasize(md,
1224 sizeof(struct dev_crypto_state))
1225 || !EVP_MD_meth_set_init(md, cryptodev_digest_init)
1226 || !EVP_MD_meth_set_update(md, cryptodev_digest_update)
1227 || !EVP_MD_meth_set_final(md, cryptodev_digest_final)
1228 || !EVP_MD_meth_set_copy(md, cryptodev_digest_copy)
1229 || !EVP_MD_meth_set_cleanup(md, cryptodev_digest_cleanup)) {
1230 EVP_MD_meth_free(md);
1238 # endif /* USE_CRYPTODEV_DIGESTS */
1241 cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
1242 const int **nids, int nid)
1245 return (cryptodev_usable_digests(nids));
1248 # ifdef USE_CRYPTODEV_DIGESTS
1250 *digest = cryptodev_md5();
1253 *digest = cryptodev_sha1();
1256 *digest = cryptodev_sha256();
1259 *digest = cryptodev_sha224();
1262 *digest = cryptodev_sha384();
1265 *digest = cryptodev_sha512();
1268 # endif /* USE_CRYPTODEV_DIGESTS */
1272 return (*digest != NULL);
1275 static int cryptodev_engine_destroy(ENGINE *e)
1277 EVP_CIPHER_meth_free(rc4_cipher);
1279 EVP_CIPHER_meth_free(des_cbc_cipher);
1280 des_cbc_cipher = NULL;
1281 EVP_CIPHER_meth_free(des3_cbc_cipher);
1282 des3_cbc_cipher = NULL;
1283 EVP_CIPHER_meth_free(bf_cbc_cipher);
1284 bf_cbc_cipher = NULL;
1285 EVP_CIPHER_meth_free(cast_cbc_cipher);
1286 cast_cbc_cipher = NULL;
1287 EVP_CIPHER_meth_free(aes_cbc_cipher);
1288 aes_cbc_cipher = NULL;
1289 EVP_CIPHER_meth_free(aes_192_cbc_cipher);
1290 aes_192_cbc_cipher = NULL;
1291 EVP_CIPHER_meth_free(aes_256_cbc_cipher);
1292 aes_256_cbc_cipher = NULL;
1293 # ifdef CRYPTO_AES_CTR
1294 EVP_CIPHER_meth_free(aes_ctr_cipher);
1295 aes_ctr_cipher = NULL;
1296 EVP_CIPHER_meth_free(aes_192_ctr_cipher);
1297 aes_192_ctr_cipher = NULL;
1298 EVP_CIPHER_meth_free(aes_256_ctr_cipher);
1299 aes_256_ctr_cipher = NULL;
1301 # ifdef USE_CRYPTODEV_DIGESTS
1302 EVP_MD_meth_free(sha1_md);
1304 EVP_MD_meth_free(sha256_md);
1306 EVP_MD_meth_free(sha224_md);
1308 EVP_MD_meth_free(sha384_md);
1310 EVP_MD_meth_free(sha512_md);
1312 EVP_MD_meth_free(md5_md);
1315 RSA_meth_free(cryptodev_rsa);
1316 cryptodev_rsa = NULL;
1317 # ifndef OPENSSL_NO_DSA
1318 DSA_meth_free(cryptodev_dsa);
1319 cryptodev_dsa = NULL;
1321 # ifndef OPENSSL_NO_DH
1322 DH_meth_free(cryptodev_dh);
1323 cryptodev_dh = NULL;
1329 * Convert a BIGNUM to the representation that /dev/crypto needs.
1330 * Upon completion of use, the caller is responsible for freeing
1333 static int bn2crparam(const BIGNUM *a, struct crparam *crp)
1335 ssize_t bytes, bits;
1341 bits = BN_num_bits(a);
1342 bytes = BN_num_bytes(a);
1344 b = OPENSSL_zalloc(bytes);
1348 crp->crp_p = (void *) b;
1349 crp->crp_nbits = bits;
1355 /* Convert a /dev/crypto parameter to a BIGNUM */
1356 static int crparam2bn(struct crparam *crp, BIGNUM *a)
1361 bytes = (crp->crp_nbits + 7) / 8;
1366 if ((pd = OPENSSL_malloc(bytes)) == NULL)
1369 for (i = 0; i < bytes; i++)
1370 pd[i] = crp->crp_p[bytes - i - 1];
1372 BN_bin2bn(pd, bytes, a);
1378 static void zapparams(struct crypt_kop *kop)
1382 for (i = 0; i < kop->crk_iparams + kop->crk_oparams; i++) {
1383 OPENSSL_free(kop->crk_param[i].crp_p);
1384 kop->crk_param[i].crp_p = NULL;
1385 kop->crk_param[i].crp_nbits = 0;
1390 cryptodev_asym(struct crypt_kop *kop, int rlen, BIGNUM *r, int slen,
1395 if ((fd = get_asym_dev_crypto()) < 0)
1399 kop->crk_param[kop->crk_iparams].crp_p = OPENSSL_zalloc(rlen);
1400 if (kop->crk_param[kop->crk_iparams].crp_p == NULL)
1402 kop->crk_param[kop->crk_iparams].crp_nbits = rlen * 8;
1406 kop->crk_param[kop->crk_iparams + 1].crp_p =
1407 OPENSSL_zalloc(slen);
1408 /* No need to free the kop->crk_iparams parameter if it was allocated,
1409 * callers of this routine have to free allocated parameters through
1410 * zapparams both in case of success and failure
1412 if (kop->crk_param[kop->crk_iparams+1].crp_p == NULL)
1414 kop->crk_param[kop->crk_iparams + 1].crp_nbits = slen * 8;
1418 if (ioctl(fd, CIOCKEY, kop) == 0) {
1420 crparam2bn(&kop->crk_param[kop->crk_iparams], r);
1422 crparam2bn(&kop->crk_param[kop->crk_iparams + 1], s);
1430 cryptodev_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
1431 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
1433 struct crypt_kop kop;
1437 * Currently, we know we can do mod exp iff we can do any asymmetric
1438 * operations at all.
1440 if (cryptodev_asymfeat == 0) {
1441 ret = BN_mod_exp(r, a, p, m, ctx);
1445 memset(&kop, 0, sizeof(kop));
1446 kop.crk_op = CRK_MOD_EXP;
1448 /* inputs: a^p % m */
1449 if (bn2crparam(a, &kop.crk_param[0]))
1451 if (bn2crparam(p, &kop.crk_param[1]))
1453 if (bn2crparam(m, &kop.crk_param[2]))
1455 kop.crk_iparams = 3;
1457 if (cryptodev_asym(&kop, BN_num_bytes(m), r, 0, NULL)) {
1458 const RSA_METHOD *meth = RSA_PKCS1_OpenSSL();
1459 printf("OCF asym process failed, Running in software\n");
1460 ret = RSA_meth_get_bn_mod_exp(meth)(r, a, p, m, ctx, in_mont);
1462 } else if (ECANCELED == kop.crk_status) {
1463 const RSA_METHOD *meth = RSA_PKCS1_OpenSSL();
1464 printf("OCF hardware operation cancelled. Running in Software\n");
1465 ret = RSA_meth_get_bn_mod_exp(meth)(r, a, p, m, ctx, in_mont);
1467 /* else cryptodev operation worked ok ==> ret = 1 */
1475 cryptodev_rsa_nocrt_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
1479 const BIGNUM *n = NULL;
1480 const BIGNUM *d = NULL;
1483 RSA_get0_key(rsa, &n, NULL, &d);
1484 r = cryptodev_bn_mod_exp(r0, I, d, n, ctx, NULL);
1490 cryptodev_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
1492 struct crypt_kop kop;
1494 const BIGNUM *p = NULL;
1495 const BIGNUM *q = NULL;
1496 const BIGNUM *dmp1 = NULL;
1497 const BIGNUM *dmq1 = NULL;
1498 const BIGNUM *iqmp = NULL;
1499 const BIGNUM *n = NULL;
1501 RSA_get0_factors(rsa, &p, &q);
1502 RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
1503 RSA_get0_key(rsa, &n, NULL, NULL);
1505 if (!p || !q || !dmp1 || !dmq1 || !iqmp) {
1506 /* XXX 0 means failure?? */
1510 memset(&kop, 0, sizeof(kop));
1511 kop.crk_op = CRK_MOD_EXP_CRT;
1512 /* inputs: rsa->p rsa->q I rsa->dmp1 rsa->dmq1 rsa->iqmp */
1513 if (bn2crparam(p, &kop.crk_param[0]))
1515 if (bn2crparam(q, &kop.crk_param[1]))
1517 if (bn2crparam(I, &kop.crk_param[2]))
1519 if (bn2crparam(dmp1, &kop.crk_param[3]))
1521 if (bn2crparam(dmq1, &kop.crk_param[4]))
1523 if (bn2crparam(iqmp, &kop.crk_param[5]))
1525 kop.crk_iparams = 6;
1527 if (cryptodev_asym(&kop, BN_num_bytes(n), r0, 0, NULL)) {
1528 const RSA_METHOD *meth = RSA_PKCS1_OpenSSL();
1529 printf("OCF asym process failed, running in Software\n");
1530 ret = RSA_meth_get_mod_exp(meth)(r0, I, rsa, ctx);
1532 } else if (ECANCELED == kop.crk_status) {
1533 const RSA_METHOD *meth = RSA_PKCS1_OpenSSL();
1534 printf("OCF hardware operation cancelled. Running in Software\n");
1535 ret = RSA_meth_get_mod_exp(meth)(r0, I, rsa, ctx);
1537 /* else cryptodev operation worked ok ==> ret = 1 */
1544 # ifndef OPENSSL_NO_DSA
1546 cryptodev_dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
1547 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
1549 return cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx);
1553 cryptodev_dsa_dsa_mod_exp(DSA *dsa, BIGNUM *t1, const BIGNUM *g,
1554 const BIGNUM *u1, const BIGNUM *pub_key,
1555 const BIGNUM *u2, const BIGNUM *p, BN_CTX *ctx,
1558 const BIGNUM *dsag, *dsap, *dsapub_key;
1561 const DSA_METHOD *meth;
1562 int (*bn_mod_exp)(DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
1563 BN_CTX *, BN_MONT_CTX *);
1569 /* v = ( g^u1 * y^u2 mod p ) mod q */
1570 /* let t1 = g ^ u1 mod p */
1573 DSA_get0_pqg(dsa, &dsap, NULL, &dsag);
1574 DSA_get0_key(dsa, &dsapub_key, NULL);
1576 meth = DSA_get_method(dsa);
1579 bn_mod_exp = DSA_meth_get_bn_mod_exp(meth);
1580 if (bn_mod_exp == NULL)
1583 if (!bn_mod_exp(dsa, t1, dsag, u1, dsap, ctx, mont))
1586 /* let t2 = y ^ u2 mod p */
1587 if (!bn_mod_exp(dsa, t2, dsapub_key, u2, dsap, ctx, mont))
1589 /* let t1 = t1 * t2 mod p */
1590 if (!BN_mod_mul(t1, t1, t2, dsap, ctx))
1599 static DSA_SIG *cryptodev_dsa_do_sign(const unsigned char *dgst, int dlen,
1602 struct crypt_kop kop;
1604 const BIGNUM *dsap = NULL, *dsaq = NULL, *dsag = NULL;
1605 const BIGNUM *priv_key = NULL;
1606 DSA_SIG *dsasig, *dsaret = NULL;
1608 dsasig = DSA_SIG_new();
1612 memset(&kop, 0, sizeof(kop));
1613 kop.crk_op = CRK_DSA_SIGN;
1615 /* inputs: dgst dsa->p dsa->q dsa->g dsa->priv_key */
1616 kop.crk_param[0].crp_p = (void *) dgst;
1617 kop.crk_param[0].crp_nbits = dlen * 8;
1618 DSA_get0_pqg(dsa, &dsap, &dsaq, &dsag);
1619 DSA_get0_key(dsa, NULL, &priv_key);
1620 if (bn2crparam(dsap, &kop.crk_param[1]))
1622 if (bn2crparam(dsaq, &kop.crk_param[2]))
1624 if (bn2crparam(dsag, &kop.crk_param[3]))
1626 if (bn2crparam(priv_key, &kop.crk_param[4]))
1628 kop.crk_iparams = 5;
1636 if (cryptodev_asym(&kop, BN_num_bytes(dsaq), r,
1637 BN_num_bytes(dsaq), s) == 0) {
1638 DSA_SIG_set0(dsasig, r, s);
1641 dsaret = DSA_meth_get_sign(DSA_OpenSSL())(dgst, dlen, dsa);
1644 if (dsaret != dsasig)
1645 DSA_SIG_free(dsasig);
1646 kop.crk_param[0].crp_p = NULL;
1652 cryptodev_dsa_verify(const unsigned char *dgst, int dlen,
1653 DSA_SIG *sig, DSA *dsa)
1655 struct crypt_kop kop;
1657 const BIGNUM *pr, *ps, *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL;
1659 memset(&kop, 0, sizeof(kop));
1660 kop.crk_op = CRK_DSA_VERIFY;
1662 /* inputs: dgst dsa->p dsa->q dsa->g dsa->pub_key sig->r sig->s */
1663 kop.crk_param[0].crp_p = (void *) dgst;
1664 kop.crk_param[0].crp_nbits = dlen * 8;
1665 DSA_get0_pqg(dsa, &p, &q, &g);
1666 if (bn2crparam(p, &kop.crk_param[1]))
1668 if (bn2crparam(q, &kop.crk_param[2]))
1670 if (bn2crparam(g, &kop.crk_param[3]))
1672 DSA_get0_key(dsa, &pub_key, NULL);
1673 if (bn2crparam(pub_key, &kop.crk_param[4]))
1675 DSA_SIG_get0(sig, &pr, &ps);
1676 if (bn2crparam(pr, &kop.crk_param[5]))
1678 if (bn2crparam(ps, &kop.crk_param[6]))
1680 kop.crk_iparams = 7;
1682 if (cryptodev_asym(&kop, 0, NULL, 0, NULL) == 0) {
1684 * OCF success value is 0, if not zero, change dsaret to fail
1686 if (0 != kop.crk_status)
1689 dsaret = DSA_meth_get_verify(DSA_OpenSSL())(dgst, dlen, sig, dsa);
1692 kop.crk_param[0].crp_p = NULL;
1698 # ifndef OPENSSL_NO_DH
1700 cryptodev_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
1701 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
1704 return (cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx));
1708 cryptodev_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh)
1710 struct crypt_kop kop;
1713 const BIGNUM *p = NULL;
1714 const BIGNUM *priv_key = NULL;
1716 if ((fd = get_asym_dev_crypto()) < 0) {
1717 const DH_METHOD *meth = DH_OpenSSL();
1719 return DH_meth_get_compute_key(meth)(key, pub_key, dh);
1722 DH_get0_pqg(dh, &p, NULL, NULL);
1723 DH_get0_key(dh, NULL, &priv_key);
1725 keylen = BN_num_bits(p);
1727 memset(&kop, 0, sizeof(kop));
1728 kop.crk_op = CRK_DH_COMPUTE_KEY;
1730 /* inputs: dh->priv_key pub_key dh->p key */
1731 if (bn2crparam(priv_key, &kop.crk_param[0]))
1733 if (bn2crparam(pub_key, &kop.crk_param[1]))
1735 if (bn2crparam(p, &kop.crk_param[2]))
1737 kop.crk_iparams = 3;
1739 kop.crk_param[3].crp_p = (void *) key;
1740 kop.crk_param[3].crp_nbits = keylen * 8;
1741 kop.crk_oparams = 1;
1743 if (ioctl(fd, CIOCKEY, &kop) == -1) {
1744 const DH_METHOD *meth = DH_OpenSSL();
1746 dhret = DH_meth_get_compute_key(meth)(key, pub_key, dh);
1749 kop.crk_param[3].crp_p = NULL;
1754 # endif /* ndef OPENSSL_NO_DH */
1757 * ctrl right now is just a wrapper that doesn't do much
1758 * but I expect we'll want some options soon.
1761 cryptodev_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
1763 # ifdef HAVE_SYSLOG_R
1764 struct syslog_data sd = SYSLOG_DATA_INIT;
1769 # ifdef HAVE_SYSLOG_R
1770 syslog_r(LOG_ERR, &sd, "cryptodev_ctrl: unknown command %d", cmd);
1772 syslog(LOG_ERR, "cryptodev_ctrl: unknown command %d", cmd);
1779 void engine_load_cryptodev_int(void)
1781 ENGINE *engine = ENGINE_new();
1786 if ((fd = get_dev_crypto()) < 0) {
1787 ENGINE_free(engine);
1792 * find out what asymmetric crypto algorithms we support
1794 if (ioctl(fd, CIOCASYMFEAT, &cryptodev_asymfeat) == -1) {
1796 ENGINE_free(engine);
1801 if (!ENGINE_set_id(engine, "cryptodev") ||
1802 !ENGINE_set_name(engine, "cryptodev engine") ||
1803 !ENGINE_set_destroy_function(engine, cryptodev_engine_destroy) ||
1804 !ENGINE_set_ciphers(engine, cryptodev_engine_ciphers) ||
1805 !ENGINE_set_digests(engine, cryptodev_engine_digests) ||
1806 !ENGINE_set_ctrl_function(engine, cryptodev_ctrl) ||
1807 !ENGINE_set_cmd_defns(engine, cryptodev_defns)) {
1808 ENGINE_free(engine);
1812 cryptodev_rsa = RSA_meth_dup(RSA_PKCS1_OpenSSL());
1813 if (cryptodev_rsa != NULL) {
1814 RSA_meth_set1_name(cryptodev_rsa, "cryptodev RSA method");
1815 RSA_meth_set_flags(cryptodev_rsa, 0);
1816 if (ENGINE_set_RSA(engine, cryptodev_rsa)) {
1817 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1818 RSA_meth_set_bn_mod_exp(cryptodev_rsa, cryptodev_bn_mod_exp);
1819 if (cryptodev_asymfeat & CRF_MOD_EXP_CRT)
1820 RSA_meth_set_mod_exp(cryptodev_rsa, cryptodev_rsa_mod_exp);
1822 RSA_meth_set_mod_exp(cryptodev_rsa,
1823 cryptodev_rsa_nocrt_mod_exp);
1827 ENGINE_free(engine);
1831 # ifndef OPENSSL_NO_DSA
1832 cryptodev_dsa = DSA_meth_dup(DSA_OpenSSL());
1833 if (cryptodev_dsa != NULL) {
1834 DSA_meth_set1_name(cryptodev_dsa, "cryptodev DSA method");
1835 DSA_meth_set_flags(cryptodev_dsa, 0);
1836 if (ENGINE_set_DSA(engine, cryptodev_dsa)) {
1837 if (cryptodev_asymfeat & CRF_DSA_SIGN)
1838 DSA_meth_set_sign(cryptodev_dsa, cryptodev_dsa_do_sign);
1839 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1840 DSA_meth_set_bn_mod_exp(cryptodev_dsa,
1841 cryptodev_dsa_bn_mod_exp);
1842 DSA_meth_set_mod_exp(cryptodev_dsa, cryptodev_dsa_dsa_mod_exp);
1844 if (cryptodev_asymfeat & CRF_DSA_VERIFY)
1845 DSA_meth_set_verify(cryptodev_dsa, cryptodev_dsa_verify);
1848 ENGINE_free(engine);
1853 # ifndef OPENSSL_NO_DH
1854 cryptodev_dh = DH_meth_dup(DH_OpenSSL());
1855 if (cryptodev_dh != NULL) {
1856 DH_meth_set1_name(cryptodev_dh, "cryptodev DH method");
1857 DH_meth_set_flags(cryptodev_dh, 0);
1858 if (ENGINE_set_DH(engine, cryptodev_dh)) {
1859 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1860 DH_meth_set_bn_mod_exp(cryptodev_dh, cryptodev_mod_exp_dh);
1861 if (cryptodev_asymfeat & CRF_DH_COMPUTE_KEY)
1862 DH_meth_set_compute_key(cryptodev_dh,
1863 cryptodev_dh_compute_key);
1867 ENGINE_free(engine);
1873 ENGINE_free(engine);
1877 #endif /* HAVE_CRYPTODEV */