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-rw-r--r--src/lib/libcrypto/engine/hw_cryptodev.c1343
1 files changed, 0 insertions, 1343 deletions
diff --git a/src/lib/libcrypto/engine/hw_cryptodev.c b/src/lib/libcrypto/engine/hw_cryptodev.c
deleted file mode 100644
index c2a144f4eb..0000000000
--- a/src/lib/libcrypto/engine/hw_cryptodev.c
+++ /dev/null
@@ -1,1343 +0,0 @@
1/*
2 * Copyright (c) 2002-2004 Theo de Raadt
3 * Copyright (c) 2002 Bob Beck <beck@openbsd.org>
4 * Copyright (c) 2002 Markus Friedl
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 */
28
29#include <openssl/objects.h>
30#include <openssl/engine.h>
31#include <openssl/evp.h>
32#include <openssl/bn.h>
33
34#if (defined(__unix__) || defined(unix)) && !defined(USG)
35#include <sys/param.h>
36# if (OpenBSD >= 200112) || ((__FreeBSD_version >= 470101 && __FreeBSD_version < 500000) || __FreeBSD_version >= 500041)
37# define HAVE_CRYPTODEV
38# endif
39# if (OpenBSD >= 200110)
40# define HAVE_SYSLOG_R
41# endif
42#endif
43
44#ifndef HAVE_CRYPTODEV
45
46void
47ENGINE_load_cryptodev(void)
48{
49 /* This is a NOP on platforms without /dev/crypto */
50 return;
51}
52
53#else
54
55#include <sys/types.h>
56#include <crypto/cryptodev.h>
57#include <openssl/dh.h>
58#include <openssl/dsa.h>
59#include <openssl/err.h>
60#include <openssl/rsa.h>
61#include <sys/ioctl.h>
62
63#include <errno.h>
64#include <fcntl.h>
65#include <limits.h>
66#include <stdarg.h>
67#include <stdio.h>
68#include <string.h>
69#include <syslog.h>
70#include <unistd.h>
71
72#if defined(__i386__) || defined(__amd64__)
73#include <sys/sysctl.h>
74#include <machine/cpu.h>
75#include <machine/specialreg.h>
76
77#include <ssl/aes.h>
78
79static int check_viac3aes(void);
80#endif
81
82#define CRYPTO_VIAC3_MAX 3
83
84struct dev_crypto_state {
85 struct session_op d_sess;
86 int d_fd;
87};
88
89struct dev_crypto_cipher {
90 int c_id;
91 int c_nid;
92 int c_ivmax;
93 int c_keylen;
94};
95
96static u_int32_t cryptodev_asymfeat = 0;
97
98static int get_asym_dev_crypto(void);
99static int open_dev_crypto(void);
100static int get_dev_crypto(void);
101static struct dev_crypto_cipher *cipher_nid_to_cryptodev(int nid);
102static int get_cryptodev_ciphers(const int **cnids);
103/*static int get_cryptodev_digests(const int **cnids);*/
104static int cryptodev_usable_ciphers(const int **nids);
105static int cryptodev_usable_digests(const int **nids);
106static int cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
107 const unsigned char *in, size_t inl);
108static int cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
109 const unsigned char *iv, int enc);
110static int cryptodev_cleanup(EVP_CIPHER_CTX *ctx);
111static int cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
112 const int **nids, int nid);
113static int cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
114 const int **nids, int nid);
115static int bn2crparam(const BIGNUM *a, struct crparam *crp);
116static int crparam2bn(struct crparam *crp, BIGNUM *a);
117static void zapparams(struct crypt_kop *kop);
118static int cryptodev_asym(struct crypt_kop *kop, int rlen, BIGNUM *r,
119 int slen, BIGNUM *s);
120
121static int cryptodev_bn_mod_exp(BIGNUM *r, const BIGNUM *a,
122 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
123static int cryptodev_rsa_nocrt_mod_exp(BIGNUM *r0, const BIGNUM *I,
124 RSA *rsa, BN_CTX *ctx);
125static int cryptodev_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
126 BN_CTX *ctx);
127static int cryptodev_dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a,
128 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
129static int cryptodev_dsa_dsa_mod_exp(DSA *dsa, BIGNUM *t1, BIGNUM *g,
130 BIGNUM *u1, BIGNUM *pub_key, BIGNUM *u2, BIGNUM *p,
131 BN_CTX *ctx, BN_MONT_CTX *mont);
132static DSA_SIG *cryptodev_dsa_do_sign(const unsigned char *dgst,
133 int dlen, DSA *dsa);
134static int cryptodev_dsa_verify(const unsigned char *dgst, int dgst_len,
135 DSA_SIG *sig, DSA *dsa);
136static int cryptodev_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
137 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
138 BN_MONT_CTX *m_ctx);
139static int cryptodev_dh_compute_key(unsigned char *key,
140 const BIGNUM *pub_key, DH *dh);
141static int cryptodev_ctrl(ENGINE *e, int cmd, long i, void *p,
142 void (*f)());
143void ENGINE_load_cryptodev(void);
144
145static const ENGINE_CMD_DEFN cryptodev_defns[] = {
146 { 0, NULL, NULL, 0 }
147};
148
149static struct dev_crypto_cipher ciphers[] = {
150 { CRYPTO_DES_CBC, NID_des_cbc, 8, 8, },
151 { CRYPTO_3DES_CBC, NID_des_ede3_cbc, 8, 24, },
152 { CRYPTO_AES_CBC, NID_aes_128_cbc, 16, 16, },
153 { CRYPTO_AES_CBC, NID_aes_192_cbc, 16, 24, },
154 { CRYPTO_AES_CBC, NID_aes_256_cbc, 16, 32, },
155 { CRYPTO_BLF_CBC, NID_bf_cbc, 8, 16, },
156 { CRYPTO_CAST_CBC, NID_cast5_cbc, 8, 16, },
157 { 0, NID_undef, 0, 0, },
158};
159
160#if 0 /* UNUSED */
161static struct {
162 int id;
163 int nid;
164} digests[] = {
165 { CRYPTO_SHA1_HMAC, NID_hmacWithSHA1, },
166 { CRYPTO_RIPEMD160_HMAC, NID_ripemd160, },
167 { CRYPTO_MD5_KPDK, NID_undef, },
168 { CRYPTO_SHA1_KPDK, NID_undef, },
169 { CRYPTO_MD5, NID_md5, },
170 { CRYPTO_SHA1, NID_undef, },
171 { 0, NID_undef, },
172};
173#endif
174
175/*
176 * Return a fd if /dev/crypto seems usable, -1 otherwise.
177 */
178static int
179open_dev_crypto(void)
180{
181 static int fd = -1;
182
183 if (fd == -1) {
184 if ((fd = open("/dev/crypto", O_RDWR, 0)) == -1)
185 return (-1);
186 /* close on exec */
187 if (fcntl(fd, F_SETFD, 1) == -1) {
188 close(fd);
189 fd = -1;
190 return (-1);
191 }
192 }
193 return (fd);
194}
195
196static int
197get_dev_crypto(void)
198{
199 int fd, retfd;
200
201 if ((fd = open_dev_crypto()) == -1)
202 return (-1);
203 if (ioctl(fd, CRIOGET, &retfd) == -1) {
204 close(fd);
205 return (-1);
206 }
207
208 /* close on exec */
209 if (fcntl(retfd, F_SETFD, 1) == -1) {
210 close(retfd);
211 return (-1);
212 }
213 return (retfd);
214}
215
216/* Caching version for asym operations */
217static int
218get_asym_dev_crypto(void)
219{
220 static int fd = -1;
221
222 if (fd == -1)
223 fd = get_dev_crypto();
224 return fd;
225}
226
227/* convert libcrypto nids to cryptodev */
228static struct dev_crypto_cipher *
229cipher_nid_to_cryptodev(int nid)
230{
231 int i;
232
233 for (i = 0; ciphers[i].c_id; i++)
234 if (ciphers[i].c_nid == nid)
235 return (&ciphers[i]);
236 return (NULL);
237}
238
239/*
240 * Find out what ciphers /dev/crypto will let us have a session for.
241 * XXX note, that some of these openssl doesn't deal with yet!
242 * returning them here is harmless, as long as we return NULL
243 * when asked for a handler in the cryptodev_engine_ciphers routine
244 */
245static int
246get_cryptodev_ciphers(const int **cnids)
247{
248 static int nids[CRYPTO_ALGORITHM_MAX + CRYPTO_VIAC3_MAX + 1];
249 struct session_op sess;
250 int fd, i, count = 0;
251
252 if ((fd = get_dev_crypto()) < 0) {
253 *cnids = NULL;
254 return (0);
255 }
256 memset(&sess, 0, sizeof(sess));
257 sess.key = (caddr_t)"123456781234567812345678";
258
259 for (i = 0; ciphers[i].c_id && count <= CRYPTO_ALGORITHM_MAX; i++) {
260 if (ciphers[i].c_nid == NID_undef)
261 continue;
262 sess.cipher = ciphers[i].c_id;
263 sess.keylen = ciphers[i].c_keylen;
264 sess.mac = 0;
265 if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
266 ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
267 nids[count++] = ciphers[i].c_nid;
268 }
269 close(fd);
270
271#if defined(__i386__) || defined(__amd64__)
272 /*
273 * Always check for the VIA C3 AES instructions;
274 * even if /dev/crypto is disabled.
275 */
276 if (check_viac3aes() >= 1) {
277 int have_NID_aes_128_cbc = 0;
278 int have_NID_aes_192_cbc = 0;
279 int have_NID_aes_256_cbc = 0;
280
281 for (i = 0; i < count; i++) {
282 if (nids[i] == NID_aes_128_cbc)
283 have_NID_aes_128_cbc = 1;
284 if (nids[i] == NID_aes_192_cbc)
285 have_NID_aes_192_cbc = 1;
286 if (nids[i] == NID_aes_256_cbc)
287 have_NID_aes_256_cbc = 1;
288 }
289 if (!have_NID_aes_128_cbc)
290 nids[count++] = NID_aes_128_cbc;
291 if (!have_NID_aes_192_cbc)
292 nids[count++] = NID_aes_192_cbc;
293 if (!have_NID_aes_256_cbc)
294 nids[count++] = NID_aes_256_cbc;
295 }
296#endif
297
298 if (count > 0)
299 *cnids = nids;
300 else
301 *cnids = NULL;
302 return (count);
303}
304
305/*
306 * Find out what digests /dev/crypto will let us have a session for.
307 * XXX note, that some of these openssl doesn't deal with yet!
308 * returning them here is harmless, as long as we return NULL
309 * when asked for a handler in the cryptodev_engine_digests routine
310 */
311#if 0 /* UNUSED */
312static int
313get_cryptodev_digests(const int **cnids)
314{
315 static int nids[CRYPTO_ALGORITHM_MAX];
316 struct session_op sess;
317 int fd, i, count = 0;
318
319 if ((fd = get_dev_crypto()) < 0) {
320 *cnids = NULL;
321 return (0);
322 }
323 memset(&sess, 0, sizeof(sess));
324 for (i = 0; digests[i].id && count < CRYPTO_ALGORITHM_MAX; i++) {
325 if (digests[i].nid == NID_undef)
326 continue;
327 sess.mac = digests[i].id;
328 sess.cipher = 0;
329 if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
330 ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
331 nids[count++] = digests[i].nid;
332 }
333 close(fd);
334
335 if (count > 0)
336 *cnids = nids;
337 else
338 *cnids = NULL;
339 return (count);
340}
341#endif
342
343/*
344 * Find the useable ciphers|digests from dev/crypto - this is the first
345 * thing called by the engine init crud which determines what it
346 * can use for ciphers from this engine. We want to return
347 * only what we can do, anythine else is handled by software.
348 *
349 * If we can't initialize the device to do anything useful for
350 * any reason, we want to return a NULL array, and 0 length,
351 * which forces everything to be done is software. By putting
352 * the initalization of the device in here, we ensure we can
353 * use this engine as the default, and if for whatever reason
354 * /dev/crypto won't do what we want it will just be done in
355 * software
356 *
357 * This can (should) be greatly expanded to perhaps take into
358 * account speed of the device, and what we want to do.
359 * (although the disabling of particular alg's could be controlled
360 * by the device driver with sysctl's.) - this is where we
361 * want most of the decisions made about what we actually want
362 * to use from /dev/crypto.
363 */
364static int
365cryptodev_usable_ciphers(const int **nids)
366{
367 return (get_cryptodev_ciphers(nids));
368}
369
370static int
371cryptodev_usable_digests(const int **nids)
372{
373 /*
374 * XXXX just disable all digests for now, because it sucks.
375 * we need a better way to decide this - i.e. I may not
376 * want digests on slow cards like hifn on fast machines,
377 * but might want them on slow or loaded machines, etc.
378 * will also want them when using crypto cards that don't
379 * suck moose gonads - would be nice to be able to decide something
380 * as reasonable default without having hackery that's card dependent.
381 * of course, the default should probably be just do everything,
382 * with perhaps a sysctl to turn algoritms off (or have them off
383 * by default) on cards that generally suck like the hifn.
384 */
385 *nids = NULL;
386 return (0);
387}
388
389static int
390cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
391 const unsigned char *in, size_t inl)
392{
393 struct crypt_op cryp;
394 struct dev_crypto_state *state = ctx->cipher_data;
395 struct session_op *sess = &state->d_sess;
396 void *iiv;
397 unsigned char save_iv[EVP_MAX_IV_LENGTH];
398
399 if (state->d_fd < 0)
400 return (0);
401 if (!inl)
402 return (1);
403 if ((inl % ctx->cipher->block_size) != 0)
404 return (0);
405
406 memset(&cryp, 0, sizeof(cryp));
407
408 cryp.ses = sess->ses;
409 cryp.flags = 0;
410 cryp.len = inl;
411 cryp.src = (caddr_t) in;
412 cryp.dst = (caddr_t) out;
413 cryp.mac = 0;
414
415 cryp.op = ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
416
417 if (ctx->cipher->iv_len) {
418 cryp.iv = (caddr_t) ctx->iv;
419 if (!ctx->encrypt) {
420 iiv = (void *) in + inl - ctx->cipher->iv_len;
421 memcpy(save_iv, iiv, ctx->cipher->iv_len);
422 }
423 } else
424 cryp.iv = NULL;
425
426 if (ioctl(state->d_fd, CIOCCRYPT, &cryp) == -1) {
427 /* XXX need better errror handling
428 * this can fail for a number of different reasons.
429 */
430 return (0);
431 }
432
433 if (ctx->cipher->iv_len) {
434 if (ctx->encrypt)
435 iiv = (void *) out + inl - ctx->cipher->iv_len;
436 else
437 iiv = save_iv;
438 memcpy(ctx->iv, iiv, ctx->cipher->iv_len);
439 }
440 return (1);
441}
442
443static int
444cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
445 const unsigned char *iv, int enc)
446{
447 struct dev_crypto_state *state = ctx->cipher_data;
448 struct session_op *sess = &state->d_sess;
449 struct dev_crypto_cipher *cipher;
450
451 if ((cipher = cipher_nid_to_cryptodev(ctx->cipher->nid)) == NULL)
452 return (0);
453
454 if (ctx->cipher->iv_len > cipher->c_ivmax)
455 return (0);
456
457 if (ctx->key_len != cipher->c_keylen)
458 return (0);
459
460 memset(sess, 0, sizeof(struct session_op));
461
462 if ((state->d_fd = get_dev_crypto()) < 0)
463 return (0);
464
465 sess->key = (unsigned char *)key;
466 sess->keylen = ctx->key_len;
467 sess->cipher = cipher->c_id;
468
469 if (ioctl(state->d_fd, CIOCGSESSION, sess) == -1) {
470 close(state->d_fd);
471 state->d_fd = -1;
472 return (0);
473 }
474 return (1);
475}
476
477/*
478 * free anything we allocated earlier when initting a
479 * session, and close the session.
480 */
481static int
482cryptodev_cleanup(EVP_CIPHER_CTX *ctx)
483{
484 int ret = 0;
485 struct dev_crypto_state *state = ctx->cipher_data;
486 struct session_op *sess = &state->d_sess;
487
488 if (state->d_fd < 0)
489 return (0);
490
491 /* XXX if this ioctl fails, someting's wrong. the invoker
492 * may have called us with a bogus ctx, or we could
493 * have a device that for whatever reason just doesn't
494 * want to play ball - it's not clear what's right
495 * here - should this be an error? should it just
496 * increase a counter, hmm. For right now, we return
497 * 0 - I don't believe that to be "right". we could
498 * call the gorpy openssl lib error handlers that
499 * print messages to users of the library. hmm..
500 */
501
502 if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) == -1) {
503 ret = 0;
504 } else {
505 ret = 1;
506 }
507 close(state->d_fd);
508 state->d_fd = -1;
509
510 return (ret);
511}
512
513/*
514 * libcrypto EVP stuff - this is how we get wired to EVP so the engine
515 * gets called when libcrypto requests a cipher NID.
516 */
517
518/* DES CBC EVP */
519const EVP_CIPHER cryptodev_des_cbc = {
520 NID_des_cbc,
521 8, 8, 8,
522 EVP_CIPH_CBC_MODE,
523 cryptodev_init_key,
524 cryptodev_cipher,
525 cryptodev_cleanup,
526 sizeof(struct dev_crypto_state),
527 EVP_CIPHER_set_asn1_iv,
528 EVP_CIPHER_get_asn1_iv,
529 NULL
530};
531
532/* 3DES CBC EVP */
533const EVP_CIPHER cryptodev_3des_cbc = {
534 NID_des_ede3_cbc,
535 8, 24, 8,
536 EVP_CIPH_CBC_MODE,
537 cryptodev_init_key,
538 cryptodev_cipher,
539 cryptodev_cleanup,
540 sizeof(struct dev_crypto_state),
541 EVP_CIPHER_set_asn1_iv,
542 EVP_CIPHER_get_asn1_iv,
543 NULL
544};
545
546const EVP_CIPHER cryptodev_bf_cbc = {
547 NID_bf_cbc,
548 8, 16, 8,
549 EVP_CIPH_CBC_MODE,
550 cryptodev_init_key,
551 cryptodev_cipher,
552 cryptodev_cleanup,
553 sizeof(struct dev_crypto_state),
554 EVP_CIPHER_set_asn1_iv,
555 EVP_CIPHER_get_asn1_iv,
556 NULL
557};
558
559const EVP_CIPHER cryptodev_cast_cbc = {
560 NID_cast5_cbc,
561 8, 16, 8,
562 EVP_CIPH_CBC_MODE,
563 cryptodev_init_key,
564 cryptodev_cipher,
565 cryptodev_cleanup,
566 sizeof(struct dev_crypto_state),
567 EVP_CIPHER_set_asn1_iv,
568 EVP_CIPHER_get_asn1_iv,
569 NULL
570};
571
572EVP_CIPHER cryptodev_aes_128_cbc = {
573 NID_aes_128_cbc,
574 16, 16, 16,
575 EVP_CIPH_CBC_MODE,
576 cryptodev_init_key,
577 cryptodev_cipher,
578 cryptodev_cleanup,
579 sizeof(struct dev_crypto_state),
580 EVP_CIPHER_set_asn1_iv,
581 EVP_CIPHER_get_asn1_iv,
582 NULL
583};
584
585EVP_CIPHER cryptodev_aes_192_cbc = {
586 NID_aes_192_cbc,
587 16, 24, 16,
588 EVP_CIPH_CBC_MODE,
589 cryptodev_init_key,
590 cryptodev_cipher,
591 cryptodev_cleanup,
592 sizeof(struct dev_crypto_state),
593 EVP_CIPHER_set_asn1_iv,
594 EVP_CIPHER_get_asn1_iv,
595 NULL
596};
597
598EVP_CIPHER cryptodev_aes_256_cbc = {
599 NID_aes_256_cbc,
600 16, 32, 16,
601 EVP_CIPH_CBC_MODE,
602 cryptodev_init_key,
603 cryptodev_cipher,
604 cryptodev_cleanup,
605 sizeof(struct dev_crypto_state),
606 EVP_CIPHER_set_asn1_iv,
607 EVP_CIPHER_get_asn1_iv,
608 NULL
609};
610
611#if defined(__i386__) || defined(__amd64__)
612
613static inline void
614viac3_xcrypt_cbc(int *cw, const void *src, void *dst, void *key, int rep,
615 void *iv)
616{
617#ifdef notdef
618 printf("cw %p[%x %x %x %x] src %p dst %p key %p rep %x iv %p\n",
619 cw, cw[0], cw[1], cw[2], cw[3],
620 src, dst, key, rep, iv);
621#endif
622#if defined(__i386__)
623
624 /*
625 * Clear bit 30 of EFLAGS.
626 */
627 __asm __volatile("pushfl; popfl");
628
629 /*
630 * Cannot simply place key into "b" register, since the compiler
631 * -pic mode uses that register; so instead we must dance a little.
632 */
633 __asm __volatile("pushl %%ebx; movl %0, %%ebx; rep xcryptcbc; popl %%ebx" :
634 : "m" (key), "a" (iv), "c" (rep), "d" (cw), "S" (src), "D" (dst)
635 : "memory", "cc");
636#else
637
638 /*
639 * Clear bit 30 of EFLAGS.
640 */
641 __asm __volatile("pushfq; popfq");
642 __asm __volatile("rep xcryptcbc" :
643 : "b" (key), "a" (iv), "c" (rep), "d" (cw), "S" (src), "D" (dst)
644 : "memory", "cc");
645#endif
646
647}
648
649#define ISUNALIGNED(x) ((long)(x)) & 15
650#define DOALIGN(v) ((void *)(((long)(v) + 15) & ~15))
651
652static int
653xcrypt_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
654 const unsigned char *in, size_t inl)
655{
656 unsigned char *save_iv_store[EVP_MAX_IV_LENGTH + 15];
657 unsigned char *save_iv = DOALIGN(save_iv_store);
658 unsigned char *ivs_store[EVP_MAX_IV_LENGTH + 15];
659 unsigned char *ivs = DOALIGN(ivs_store);
660 void *iiv, *iv = NULL, *ivp = NULL;
661 const void *usein = in;
662 void *useout = out, *spare = NULL;
663 int cws[4 + 3], *cw = DOALIGN(cws);
664
665 if (!inl)
666 return (1);
667 if ((inl % ctx->cipher->block_size) != 0)
668 return (0);
669 if (inl > UINT_MAX)
670 return (0);
671
672 if (ISUNALIGNED(in) || ISUNALIGNED(out)) {
673 spare = malloc(inl);
674 if (spare == NULL)
675 return (0);
676
677 if (ISUNALIGNED(in)) {
678 bcopy(in, spare, inl);
679 usein = spare;
680 }
681 if (ISUNALIGNED(out))
682 useout = spare;
683 }
684
685 cw[0] = C3_CRYPT_CWLO_ALG_AES | C3_CRYPT_CWLO_KEYGEN_SW |
686 C3_CRYPT_CWLO_NORMAL;
687 cw[0] |= ctx->encrypt ? C3_CRYPT_CWLO_ENCRYPT : C3_CRYPT_CWLO_DECRYPT;
688 cw[1] = cw[2] = cw[3] = 0;
689
690 switch (ctx->key_len * 8) {
691 case 128:
692 cw[0] |= C3_CRYPT_CWLO_KEY128;
693 break;
694 case 192:
695 cw[0] |= C3_CRYPT_CWLO_KEY192;
696 break;
697 case 256:
698 cw[0] |= C3_CRYPT_CWLO_KEY256;
699 break;
700 }
701
702 if (ctx->cipher->iv_len) {
703 iv = (caddr_t) ctx->iv;
704 if (!ctx->encrypt) {
705 iiv = (void *) in + inl - ctx->cipher->iv_len;
706 memcpy(save_iv, iiv, ctx->cipher->iv_len);
707 }
708 }
709
710 ivp = iv;
711 if (ISUNALIGNED(iv)) {
712 bcopy(iv, ivs, ctx->cipher->iv_len);
713 ivp = ivs;
714 }
715
716 viac3_xcrypt_cbc(cw, usein, useout, ctx->cipher_data, inl / 16, ivp);
717
718 if (ISUNALIGNED(in) || ISUNALIGNED(out)) {
719 if (ISUNALIGNED(out))
720 bcopy(spare, out, inl);
721 free(spare);
722 }
723
724 if (ivp == ivs)
725 bcopy(ivp, iv, ctx->cipher->iv_len);
726
727 if (ctx->cipher->iv_len) {
728 if (ctx->encrypt)
729 iiv = (void *) out + inl - ctx->cipher->iv_len;
730 else
731 iiv = save_iv;
732 memcpy(ctx->iv, iiv, ctx->cipher->iv_len);
733 }
734 return (1);
735}
736
737static int
738xcrypt_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
739 const unsigned char *iv, int enc)
740{
741 AES_KEY *k = ctx->cipher_data;
742#ifndef AES_ASM
743 int i;
744#endif
745
746 memset(k, 0, sizeof *k);
747 if (enc)
748 AES_set_encrypt_key(key, ctx->key_len * 8, k);
749 else
750 AES_set_decrypt_key(key, ctx->key_len * 8, k);
751
752#ifndef AES_ASM
753 /*
754 * XXX Damn OpenSSL byte swaps the expanded key!!
755 *
756 * XXX But only if we're using the C implementation of AES
757 */
758 for (i = 0; i < 4 * (AES_MAXNR + 1); i++)
759 k->rd_key[i] = htonl(k->rd_key[i]);
760#endif
761
762 return (1);
763}
764
765static int
766xcrypt_cleanup(EVP_CIPHER_CTX *ctx)
767{
768 memset(ctx->cipher_data, 0, ctx->cipher->ctx_size);
769 return (1);
770}
771
772static int
773check_viac3aes(void)
774{
775 int mib[2] = { CTL_MACHDEP, CPU_XCRYPT }, value;
776 size_t size = sizeof(value);
777
778 if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), &value, &size,
779 NULL, 0) < 0)
780 return (0);
781 if (value == 0)
782 return (0);
783
784 if (value & C3_HAS_AES) {
785 cryptodev_aes_128_cbc.init = xcrypt_init_key;
786 cryptodev_aes_128_cbc.do_cipher = xcrypt_cipher;
787 cryptodev_aes_128_cbc.cleanup = xcrypt_cleanup;
788 cryptodev_aes_128_cbc.ctx_size = sizeof(AES_KEY);
789
790 cryptodev_aes_192_cbc.init = xcrypt_init_key;
791 cryptodev_aes_192_cbc.do_cipher = xcrypt_cipher;
792 cryptodev_aes_192_cbc.cleanup = xcrypt_cleanup;
793 cryptodev_aes_192_cbc.ctx_size = sizeof(AES_KEY);
794
795 cryptodev_aes_256_cbc.init = xcrypt_init_key;
796 cryptodev_aes_256_cbc.do_cipher = xcrypt_cipher;
797 cryptodev_aes_256_cbc.cleanup = xcrypt_cleanup;
798 cryptodev_aes_256_cbc.ctx_size = sizeof(AES_KEY);
799 }
800 return (value);
801}
802#endif /* __i386__ || __amd64__ */
803
804/*
805 * Registered by the ENGINE when used to find out how to deal with
806 * a particular NID in the ENGINE. this says what we'll do at the
807 * top level - note, that list is restricted by what we answer with
808 */
809static int
810cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
811 const int **nids, int nid)
812{
813 if (!cipher)
814 return (cryptodev_usable_ciphers(nids));
815
816 switch (nid) {
817 case NID_des_ede3_cbc:
818 *cipher = &cryptodev_3des_cbc;
819 break;
820 case NID_des_cbc:
821 *cipher = &cryptodev_des_cbc;
822 break;
823 case NID_bf_cbc:
824 *cipher = &cryptodev_bf_cbc;
825 break;
826 case NID_cast5_cbc:
827 *cipher = &cryptodev_cast_cbc;
828 break;
829 case NID_aes_128_cbc:
830 *cipher = &cryptodev_aes_128_cbc;
831 break;
832 case NID_aes_192_cbc:
833 *cipher = &cryptodev_aes_192_cbc;
834 break;
835 case NID_aes_256_cbc:
836 *cipher = &cryptodev_aes_256_cbc;
837 break;
838 default:
839 *cipher = NULL;
840 break;
841 }
842 return (*cipher != NULL);
843}
844
845static int
846cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
847 const int **nids, int nid)
848{
849 if (!digest)
850 return (cryptodev_usable_digests(nids));
851
852 switch (nid) {
853 case NID_md5:
854 *digest = NULL; /* need to make a clean md5 critter */
855 break;
856 default:
857 *digest = NULL;
858 break;
859 }
860 return (*digest != NULL);
861}
862
863/*
864 * Convert a BIGNUM to the representation that /dev/crypto needs.
865 * Upon completion of use, the caller is responsible for freeing
866 * crp->crp_p.
867 */
868static int
869bn2crparam(const BIGNUM *a, struct crparam *crp)
870{
871 int i, j, k;
872 ssize_t bytes, bits;
873 u_char *b;
874
875 crp->crp_p = NULL;
876 crp->crp_nbits = 0;
877
878 bits = BN_num_bits(a);
879 bytes = (bits + 7) / 8;
880
881 b = malloc(bytes);
882 if (b == NULL)
883 return (1);
884
885 crp->crp_p = b;
886 crp->crp_nbits = bits;
887
888 for (i = 0, j = 0; i < a->top; i++) {
889 for (k = 0; k < BN_BITS2 / 8; k++) {
890 if ((j + k) >= bytes)
891 return (0);
892 b[j + k] = a->d[i] >> (k * 8);
893 }
894 j += BN_BITS2 / 8;
895 }
896 return (0);
897}
898
899/* Convert a /dev/crypto parameter to a BIGNUM */
900static int
901crparam2bn(struct crparam *crp, BIGNUM *a)
902{
903 u_int8_t *pd;
904 int i, bytes;
905
906 bytes = (crp->crp_nbits + 7) / 8;
907
908 if (bytes == 0)
909 return (-1);
910
911 if ((pd = malloc(bytes)) == NULL)
912 return (-1);
913
914 for (i = 0; i < bytes; i++)
915 pd[i] = crp->crp_p[bytes - i - 1];
916
917 BN_bin2bn(pd, bytes, a);
918 free(pd);
919
920 return (0);
921}
922
923static void
924zapparams(struct crypt_kop *kop)
925{
926 int i;
927
928 for (i = 0; i <= kop->crk_iparams + kop->crk_oparams; i++) {
929 free(kop->crk_param[i].crp_p);
930 kop->crk_param[i].crp_p = NULL;
931 kop->crk_param[i].crp_nbits = 0;
932 }
933}
934
935static int
936cryptodev_asym(struct crypt_kop *kop, int rlen, BIGNUM *r, int slen, BIGNUM *s)
937{
938 int fd, ret = -1;
939
940 if ((fd = get_asym_dev_crypto()) < 0)
941 return (ret);
942
943 if (r) {
944 kop->crk_param[kop->crk_iparams].crp_p = calloc(rlen, sizeof(char));
945 kop->crk_param[kop->crk_iparams].crp_nbits = rlen * 8;
946 kop->crk_oparams++;
947 }
948 if (s) {
949 kop->crk_param[kop->crk_iparams+1].crp_p = calloc(slen, sizeof(char));
950 kop->crk_param[kop->crk_iparams+1].crp_nbits = slen * 8;
951 kop->crk_oparams++;
952 }
953
954 if (ioctl(fd, CIOCKEY, kop) == 0) {
955 if (r)
956 crparam2bn(&kop->crk_param[kop->crk_iparams], r);
957 if (s)
958 crparam2bn(&kop->crk_param[kop->crk_iparams+1], s);
959 ret = 0;
960 }
961
962 return (ret);
963}
964
965static int
966cryptodev_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
967 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
968{
969 struct crypt_kop kop;
970 int ret = 1;
971
972 /* Currently, we know we can do mod exp iff we can do any
973 * asymmetric operations at all.
974 */
975 if (cryptodev_asymfeat == 0) {
976 ret = BN_mod_exp(r, a, p, m, ctx);
977 return (ret);
978 }
979
980 memset(&kop, 0, sizeof kop);
981 kop.crk_op = CRK_MOD_EXP;
982
983 /* inputs: a^p % m */
984 if (bn2crparam(a, &kop.crk_param[0]))
985 goto err;
986 if (bn2crparam(p, &kop.crk_param[1]))
987 goto err;
988 if (bn2crparam(m, &kop.crk_param[2]))
989 goto err;
990 kop.crk_iparams = 3;
991
992 if (cryptodev_asym(&kop, BN_num_bytes(m), r, 0, NULL) == -1) {
993 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
994 ret = meth->bn_mod_exp(r, a, p, m, ctx, in_mont);
995 }
996err:
997 zapparams(&kop);
998 return (ret);
999}
1000
1001static int
1002cryptodev_rsa_nocrt_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
1003 BN_CTX *ctx)
1004{
1005 return (RSA_PKCS1_SSLeay()->rsa_mod_exp)(r0, I, rsa, ctx);
1006}
1007
1008static int
1009cryptodev_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
1010{
1011 struct crypt_kop kop;
1012 int ret = 1;
1013
1014 if (!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) {
1015 /* XXX 0 means failure?? */
1016 return (0);
1017 }
1018
1019 memset(&kop, 0, sizeof kop);
1020 kop.crk_op = CRK_MOD_EXP_CRT;
1021 /* inputs: rsa->p rsa->q I rsa->dmp1 rsa->dmq1 rsa->iqmp */
1022 if (bn2crparam(rsa->p, &kop.crk_param[0]))
1023 goto err;
1024 if (bn2crparam(rsa->q, &kop.crk_param[1]))
1025 goto err;
1026 if (bn2crparam(I, &kop.crk_param[2]))
1027 goto err;
1028 if (bn2crparam(rsa->dmp1, &kop.crk_param[3]))
1029 goto err;
1030 if (bn2crparam(rsa->dmq1, &kop.crk_param[4]))
1031 goto err;
1032 if (bn2crparam(rsa->iqmp, &kop.crk_param[5]))
1033 goto err;
1034 kop.crk_iparams = 6;
1035
1036 if (cryptodev_asym(&kop, BN_num_bytes(rsa->n), r0, 0, NULL) == -1) {
1037 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
1038 ret = (*meth->rsa_mod_exp)(r0, I, rsa, ctx);
1039 }
1040err:
1041 zapparams(&kop);
1042 return (ret);
1043}
1044
1045static RSA_METHOD cryptodev_rsa = {
1046 .name = "cryptodev RSA method"
1047};
1048
1049static int
1050cryptodev_dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
1051 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
1052{
1053 return (cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx));
1054}
1055
1056static int
1057cryptodev_dsa_dsa_mod_exp(DSA *dsa, BIGNUM *t1, BIGNUM *g,
1058 BIGNUM *u1, BIGNUM *pub_key, BIGNUM *u2, BIGNUM *p,
1059 BN_CTX *ctx, BN_MONT_CTX *mont)
1060{
1061 BIGNUM t2;
1062 int ret = 0;
1063
1064 BN_init(&t2);
1065
1066 /* v = ( g^u1 * y^u2 mod p ) mod q */
1067 /* let t1 = g ^ u1 mod p */
1068 ret = 0;
1069
1070 if (!dsa->meth->bn_mod_exp(dsa,t1,dsa->g,u1,dsa->p,ctx,mont))
1071 goto err;
1072
1073 /* let t2 = y ^ u2 mod p */
1074 if (!dsa->meth->bn_mod_exp(dsa,&t2,dsa->pub_key,u2,dsa->p,ctx,mont))
1075 goto err;
1076 /* let u1 = t1 * t2 mod p */
1077 if (!BN_mod_mul(u1,t1,&t2,dsa->p,ctx))
1078 goto err;
1079
1080 BN_copy(t1,u1);
1081
1082 ret = 1;
1083err:
1084 BN_free(&t2);
1085 return(ret);
1086}
1087
1088static DSA_SIG *
1089cryptodev_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
1090{
1091 struct crypt_kop kop;
1092 BIGNUM *r = NULL, *s = NULL;
1093 DSA_SIG *dsaret = NULL;
1094
1095 if ((r = BN_new()) == NULL)
1096 goto err;
1097 if ((s = BN_new()) == NULL) {
1098 BN_free(r);
1099 goto err;
1100 }
1101
1102 memset(&kop, 0, sizeof kop);
1103 kop.crk_op = CRK_DSA_SIGN;
1104
1105 /* inputs: dgst dsa->p dsa->q dsa->g dsa->priv_key */
1106 kop.crk_param[0].crp_p = (caddr_t)dgst;
1107 kop.crk_param[0].crp_nbits = dlen * 8;
1108 if (bn2crparam(dsa->p, &kop.crk_param[1]))
1109 goto err;
1110 if (bn2crparam(dsa->q, &kop.crk_param[2]))
1111 goto err;
1112 if (bn2crparam(dsa->g, &kop.crk_param[3]))
1113 goto err;
1114 if (bn2crparam(dsa->priv_key, &kop.crk_param[4]))
1115 goto err;
1116 kop.crk_iparams = 5;
1117
1118 if (cryptodev_asym(&kop, BN_num_bytes(dsa->q), r,
1119 BN_num_bytes(dsa->q), s) == 0) {
1120 dsaret = DSA_SIG_new();
1121 dsaret->r = r;
1122 dsaret->s = s;
1123 } else {
1124 const DSA_METHOD *meth = DSA_OpenSSL();
1125 BN_free(r);
1126 BN_free(s);
1127 dsaret = (meth->dsa_do_sign)(dgst, dlen, dsa);
1128 }
1129err:
1130 kop.crk_param[0].crp_p = NULL;
1131 zapparams(&kop);
1132 return (dsaret);
1133}
1134
1135static int
1136cryptodev_dsa_verify(const unsigned char *dgst, int dlen,
1137 DSA_SIG *sig, DSA *dsa)
1138{
1139 struct crypt_kop kop;
1140 int dsaret = 1;
1141
1142 memset(&kop, 0, sizeof kop);
1143 kop.crk_op = CRK_DSA_VERIFY;
1144
1145 /* inputs: dgst dsa->p dsa->q dsa->g dsa->pub_key sig->r sig->s */
1146 kop.crk_param[0].crp_p = (caddr_t)dgst;
1147 kop.crk_param[0].crp_nbits = dlen * 8;
1148 if (bn2crparam(dsa->p, &kop.crk_param[1]))
1149 goto err;
1150 if (bn2crparam(dsa->q, &kop.crk_param[2]))
1151 goto err;
1152 if (bn2crparam(dsa->g, &kop.crk_param[3]))
1153 goto err;
1154 if (bn2crparam(dsa->pub_key, &kop.crk_param[4]))
1155 goto err;
1156 if (bn2crparam(sig->r, &kop.crk_param[5]))
1157 goto err;
1158 if (bn2crparam(sig->s, &kop.crk_param[6]))
1159 goto err;
1160 kop.crk_iparams = 7;
1161
1162 if (cryptodev_asym(&kop, 0, NULL, 0, NULL) == 0) {
1163 dsaret = kop.crk_status;
1164 } else {
1165 const DSA_METHOD *meth = DSA_OpenSSL();
1166
1167 dsaret = (meth->dsa_do_verify)(dgst, dlen, sig, dsa);
1168 }
1169err:
1170 kop.crk_param[0].crp_p = NULL;
1171 zapparams(&kop);
1172 return (dsaret);
1173}
1174
1175static DSA_METHOD cryptodev_dsa = {
1176 .name = "cryptodev DSA method"
1177};
1178
1179static int
1180cryptodev_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
1181 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
1182 BN_MONT_CTX *m_ctx)
1183{
1184 return (cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx));
1185}
1186
1187static int
1188cryptodev_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh)
1189{
1190 struct crypt_kop kop;
1191 int dhret = 1;
1192 int fd, keylen;
1193
1194 if ((fd = get_asym_dev_crypto()) < 0) {
1195 const DH_METHOD *meth = DH_OpenSSL();
1196
1197 return ((meth->compute_key)(key, pub_key, dh));
1198 }
1199
1200 keylen = BN_num_bits(dh->p);
1201
1202 memset(&kop, 0, sizeof kop);
1203 kop.crk_op = CRK_DH_COMPUTE_KEY;
1204
1205 /* inputs: dh->priv_key pub_key dh->p key */
1206 if (bn2crparam(dh->priv_key, &kop.crk_param[0]))
1207 goto err;
1208 if (bn2crparam(pub_key, &kop.crk_param[1]))
1209 goto err;
1210 if (bn2crparam(dh->p, &kop.crk_param[2]))
1211 goto err;
1212 kop.crk_iparams = 3;
1213
1214 kop.crk_param[3].crp_p = key;
1215 kop.crk_param[3].crp_nbits = keylen * 8;
1216 kop.crk_oparams = 1;
1217
1218 if (ioctl(fd, CIOCKEY, &kop) == -1) {
1219 const DH_METHOD *meth = DH_OpenSSL();
1220
1221 dhret = (meth->compute_key)(key, pub_key, dh);
1222 }
1223err:
1224 kop.crk_param[3].crp_p = NULL;
1225 zapparams(&kop);
1226 return (dhret);
1227}
1228
1229static DH_METHOD cryptodev_dh = {
1230 .name = "cryptodev DH method"
1231};
1232
1233/*
1234 * ctrl right now is just a wrapper that doesn't do much
1235 * but I expect we'll want some options soon.
1236 */
1237static int
1238cryptodev_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
1239{
1240#ifdef HAVE_SYSLOG_R
1241 struct syslog_data sd = SYSLOG_DATA_INIT;
1242#endif
1243
1244 switch (cmd) {
1245 default:
1246#ifdef HAVE_SYSLOG_R
1247 syslog_r(LOG_ERR, &sd,
1248 "cryptodev_ctrl: unknown command %d", cmd);
1249#else
1250 syslog(LOG_ERR, "cryptodev_ctrl: unknown command %d", cmd);
1251#endif
1252 break;
1253 }
1254 return (1);
1255}
1256
1257void
1258ENGINE_load_cryptodev(void)
1259{
1260 ENGINE *engine = ENGINE_new();
1261 int fd;
1262
1263 if (engine == NULL)
1264 return;
1265 if ((fd = get_dev_crypto()) < 0) {
1266 ENGINE_free(engine);
1267 return;
1268 }
1269
1270 /*
1271 * find out what asymmetric crypto algorithms we support
1272 */
1273 if (ioctl(fd, CIOCASYMFEAT, &cryptodev_asymfeat) == -1) {
1274 close(fd);
1275 ENGINE_free(engine);
1276 return;
1277 }
1278 close(fd);
1279
1280 if (!ENGINE_set_id(engine, "cryptodev") ||
1281 !ENGINE_set_name(engine, "BSD cryptodev engine") ||
1282 !ENGINE_set_ciphers(engine, cryptodev_engine_ciphers) ||
1283 !ENGINE_set_digests(engine, cryptodev_engine_digests) ||
1284 !ENGINE_set_ctrl_function(engine, cryptodev_ctrl) ||
1285 !ENGINE_set_cmd_defns(engine, cryptodev_defns)) {
1286 ENGINE_free(engine);
1287 return;
1288 }
1289
1290 if (ENGINE_set_RSA(engine, &cryptodev_rsa)) {
1291 const RSA_METHOD *rsa_meth = RSA_PKCS1_SSLeay();
1292
1293 cryptodev_rsa.bn_mod_exp = rsa_meth->bn_mod_exp;
1294 cryptodev_rsa.rsa_mod_exp = rsa_meth->rsa_mod_exp;
1295 cryptodev_rsa.rsa_pub_enc = rsa_meth->rsa_pub_enc;
1296 cryptodev_rsa.rsa_pub_dec = rsa_meth->rsa_pub_dec;
1297 cryptodev_rsa.rsa_priv_enc = rsa_meth->rsa_priv_enc;
1298 cryptodev_rsa.rsa_priv_dec = rsa_meth->rsa_priv_dec;
1299 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1300 cryptodev_rsa.bn_mod_exp = cryptodev_bn_mod_exp;
1301 if (cryptodev_asymfeat & CRF_MOD_EXP_CRT)
1302 cryptodev_rsa.rsa_mod_exp =
1303 cryptodev_rsa_mod_exp;
1304 else
1305 cryptodev_rsa.rsa_mod_exp =
1306 cryptodev_rsa_nocrt_mod_exp;
1307 }
1308 }
1309
1310 if (ENGINE_set_DSA(engine, &cryptodev_dsa)) {
1311 const DSA_METHOD *meth = DSA_OpenSSL();
1312
1313 memcpy(&cryptodev_dsa, meth, sizeof(DSA_METHOD));
1314 if (cryptodev_asymfeat & CRF_DSA_SIGN)
1315 cryptodev_dsa.dsa_do_sign = cryptodev_dsa_do_sign;
1316 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1317 cryptodev_dsa.bn_mod_exp = cryptodev_dsa_bn_mod_exp;
1318 cryptodev_dsa.dsa_mod_exp = cryptodev_dsa_dsa_mod_exp;
1319 }
1320 if (cryptodev_asymfeat & CRF_DSA_VERIFY)
1321 cryptodev_dsa.dsa_do_verify = cryptodev_dsa_verify;
1322 }
1323
1324 if (ENGINE_set_DH(engine, &cryptodev_dh)){
1325 const DH_METHOD *dh_meth = DH_OpenSSL();
1326
1327 cryptodev_dh.generate_key = dh_meth->generate_key;
1328 cryptodev_dh.compute_key = dh_meth->compute_key;
1329 cryptodev_dh.bn_mod_exp = dh_meth->bn_mod_exp;
1330 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1331 cryptodev_dh.bn_mod_exp = cryptodev_mod_exp_dh;
1332 if (cryptodev_asymfeat & CRF_DH_COMPUTE_KEY)
1333 cryptodev_dh.compute_key =
1334 cryptodev_dh_compute_key;
1335 }
1336 }
1337
1338 ENGINE_add(engine);
1339 ENGINE_free(engine);
1340 ERR_clear_error();
1341}
1342
1343#endif /* HAVE_CRYPTODEV */
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