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Fix warnings.
[thirdparty/openssl.git] / crypto / engine / eng_cryptodev.c
1 /*
2 * Copyright (c) 2002 Bob Beck <beck@openbsd.org>
3 * Copyright (c) 2002 Theo de Raadt
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 (defined(OpenBSD) || defined(__FreeBSD__))
36 #include <sys/param.h>
37 # if (OpenBSD >= 200112) || ((__FreeBSD_version >= 470101 && __FreeBSD_version < 500000) || __FreeBSD_version >= 500041)
38 # define HAVE_CRYPTODEV
39 # endif
40 # if (OpenBSD >= 200110)
41 # define HAVE_SYSLOG_R
42 # endif
43 #endif
44
45 #ifndef HAVE_CRYPTODEV
46
47 void
48 ENGINE_load_cryptodev(void)
49 {
50 /* This is a NOP on platforms without /dev/crypto */
51 return;
52 }
53
54 #else
55
56 #include <sys/types.h>
57 #include <crypto/cryptodev.h>
58 #include <sys/ioctl.h>
59 #include <errno.h>
60 #include <stdio.h>
61 #include <unistd.h>
62 #include <fcntl.h>
63 #include <stdarg.h>
64 #include <syslog.h>
65 #include <errno.h>
66 #include <string.h>
67
68 struct dev_crypto_state {
69 struct session_op d_sess;
70 int d_fd;
71
72 #ifdef USE_CRYPTODEV_DIGESTS
73 char dummy_mac_key[HASH_MAX_LEN];
74
75 unsigned char digest_res[HASH_MAX_LEN];
76 char *mac_data;
77 int mac_len;
78
79 int copy;
80 #endif
81 };
82
83 static u_int32_t cryptodev_asymfeat = 0;
84
85 static int get_asym_dev_crypto(void);
86 static int open_dev_crypto(void);
87 static int get_dev_crypto(void);
88 static int get_cryptodev_ciphers(const int **cnids);
89 /*static int get_cryptodev_digests(const int **cnids);*/
90 static int cryptodev_usable_ciphers(const int **nids);
91 static int cryptodev_usable_digests(const int **nids);
92 static int cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
93 const unsigned char *in, size_t inl);
94 static int cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
95 const unsigned char *iv, int enc);
96 static int cryptodev_cleanup(EVP_CIPHER_CTX *ctx);
97 static int cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
98 const int **nids, int nid);
99 static int cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
100 const int **nids, int nid);
101 static int bn2crparam(const BIGNUM *a, struct crparam *crp);
102 static int crparam2bn(struct crparam *crp, BIGNUM *a);
103 static void zapparams(struct crypt_kop *kop);
104 static int cryptodev_asym(struct crypt_kop *kop, int rlen, BIGNUM *r,
105 int slen, BIGNUM *s);
106
107 static int cryptodev_bn_mod_exp(BIGNUM *r, const BIGNUM *a,
108 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
109 static int cryptodev_rsa_nocrt_mod_exp(BIGNUM *r0, const BIGNUM *I,
110 RSA *rsa, BN_CTX *ctx);
111 static int cryptodev_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
112 static int cryptodev_dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a,
113 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
114 static int cryptodev_dsa_dsa_mod_exp(DSA *dsa, BIGNUM *t1, BIGNUM *g,
115 BIGNUM *u1, BIGNUM *pub_key, BIGNUM *u2, BIGNUM *p,
116 BN_CTX *ctx, BN_MONT_CTX *mont);
117 static DSA_SIG *cryptodev_dsa_do_sign(const unsigned char *dgst,
118 int dlen, DSA *dsa);
119 static int cryptodev_dsa_verify(const unsigned char *dgst, int dgst_len,
120 DSA_SIG *sig, DSA *dsa);
121 static int cryptodev_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
122 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
123 BN_MONT_CTX *m_ctx);
124 static int cryptodev_dh_compute_key(unsigned char *key,
125 const BIGNUM *pub_key, DH *dh);
126 static int cryptodev_ctrl(ENGINE *e, int cmd, long i, void *p,
127 void (*f)(void));
128 void ENGINE_load_cryptodev(void);
129
130 static const ENGINE_CMD_DEFN cryptodev_defns[] = {
131 { 0, NULL, NULL, 0 }
132 };
133
134 static struct {
135 int id;
136 int nid;
137 int ivmax;
138 int keylen;
139 } ciphers[] = {
140 { CRYPTO_ARC4, NID_rc4, 0, 16, },
141 { CRYPTO_DES_CBC, NID_des_cbc, 8, 8, },
142 { CRYPTO_3DES_CBC, NID_des_ede3_cbc, 8, 24, },
143 { CRYPTO_AES_CBC, NID_aes_128_cbc, 16, 16, },
144 { CRYPTO_AES_CBC, NID_aes_192_cbc, 16, 24, },
145 { CRYPTO_AES_CBC, NID_aes_256_cbc, 16, 32, },
146 { CRYPTO_BLF_CBC, NID_bf_cbc, 8, 16, },
147 { CRYPTO_CAST_CBC, NID_cast5_cbc, 8, 16, },
148 { CRYPTO_SKIPJACK_CBC, NID_undef, 0, 0, },
149 { 0, NID_undef, 0, 0, },
150 };
151
152 #if 0 /* not (yet?) used */
153 static struct {
154 int id;
155 int nid;
156 int keylen;
157 } digests[] = {
158 { CRYPTO_MD5_HMAC, NID_hmacWithMD5, 16},
159 { CRYPTO_SHA1_HMAC, NID_hmacWithSHA1, 20},
160 { CRYPTO_RIPEMD160_HMAC, NID_ripemd160, 16/*?*/},
161 { CRYPTO_MD5_KPDK, NID_undef, 0},
162 { CRYPTO_SHA1_KPDK, NID_undef, 0},
163 { CRYPTO_MD5, NID_md5, 16},
164 { CRYPTO_SHA1, NID_sha1, 20},
165 { 0, NID_undef, 0},
166 };
167 #endif /* 0 */
168
169 /*
170 * Return a fd if /dev/crypto seems usable, 0 otherwise.
171 */
172 static int
173 open_dev_crypto(void)
174 {
175 static int fd = -1;
176
177 if (fd == -1) {
178 if ((fd = open("/dev/crypto", O_RDWR, 0)) == -1)
179 return (-1);
180 /* close on exec */
181 if (fcntl(fd, F_SETFD, 1) == -1) {
182 close(fd);
183 fd = -1;
184 return (-1);
185 }
186 }
187 return (fd);
188 }
189
190 static int
191 get_dev_crypto(void)
192 {
193 int fd, retfd;
194
195 if ((fd = open_dev_crypto()) == -1)
196 return (-1);
197 if (ioctl(fd, CRIOGET, &retfd) == -1)
198 return (-1);
199
200 /* close on exec */
201 if (fcntl(retfd, F_SETFD, 1) == -1) {
202 close(retfd);
203 return (-1);
204 }
205 return (retfd);
206 }
207
208 /* Caching version for asym operations */
209 static int
210 get_asym_dev_crypto(void)
211 {
212 static int fd = -1;
213
214 if (fd == -1)
215 fd = get_dev_crypto();
216 return fd;
217 }
218
219 /*
220 * Find out what ciphers /dev/crypto will let us have a session for.
221 * XXX note, that some of these openssl doesn't deal with yet!
222 * returning them here is harmless, as long as we return NULL
223 * when asked for a handler in the cryptodev_engine_ciphers routine
224 */
225 static int
226 get_cryptodev_ciphers(const int **cnids)
227 {
228 static int nids[CRYPTO_ALGORITHM_MAX];
229 struct session_op sess;
230 int fd, i, count = 0;
231
232 if ((fd = get_dev_crypto()) < 0) {
233 *cnids = NULL;
234 return (0);
235 }
236 memset(&sess, 0, sizeof(sess));
237 sess.key = (caddr_t)"123456789abcdefghijklmno";
238
239 for (i = 0; ciphers[i].id && count < CRYPTO_ALGORITHM_MAX; i++) {
240 if (ciphers[i].nid == NID_undef)
241 continue;
242 sess.cipher = ciphers[i].id;
243 sess.keylen = ciphers[i].keylen;
244 sess.mac = 0;
245 if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
246 ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
247 nids[count++] = ciphers[i].nid;
248 }
249 close(fd);
250
251 if (count > 0)
252 *cnids = nids;
253 else
254 *cnids = NULL;
255 return (count);
256 }
257
258 /*
259 * Find out what digests /dev/crypto will let us have a session for.
260 * XXX note, that some of these openssl doesn't deal with yet!
261 * returning them here is harmless, as long as we return NULL
262 * when asked for a handler in the cryptodev_engine_digests routine
263 */
264 #if 0 /* not (yet?) used */
265 static int
266 get_cryptodev_digests(const int **cnids)
267 {
268 static int nids[CRYPTO_ALGORITHM_MAX];
269 struct session_op sess;
270 int fd, i, count = 0;
271
272 if ((fd = get_dev_crypto()) < 0) {
273 *cnids = NULL;
274 return (0);
275 }
276 memset(&sess, 0, sizeof(sess));
277 sess.mackey = (caddr_t)"123456789abcdefghijklmno";
278 for (i = 0; digests[i].id && count < CRYPTO_ALGORITHM_MAX; i++) {
279 if (digests[i].nid == NID_undef)
280 continue;
281 sess.mac = digests[i].id;
282 sess.mackeylen = digests[i].keylen;
283 sess.cipher = 0;
284 if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
285 ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
286 nids[count++] = digests[i].nid;
287 }
288 close(fd);
289
290 if (count > 0)
291 *cnids = nids;
292 else
293 *cnids = NULL;
294 return (count);
295 }
296 #endif /* 0 */
297
298 /*
299 * Find the useable ciphers|digests from dev/crypto - this is the first
300 * thing called by the engine init crud which determines what it
301 * can use for ciphers from this engine. We want to return
302 * only what we can do, anythine else is handled by software.
303 *
304 * If we can't initialize the device to do anything useful for
305 * any reason, we want to return a NULL array, and 0 length,
306 * which forces everything to be done is software. By putting
307 * the initalization of the device in here, we ensure we can
308 * use this engine as the default, and if for whatever reason
309 * /dev/crypto won't do what we want it will just be done in
310 * software
311 *
312 * This can (should) be greatly expanded to perhaps take into
313 * account speed of the device, and what we want to do.
314 * (although the disabling of particular alg's could be controlled
315 * by the device driver with sysctl's.) - this is where we
316 * want most of the decisions made about what we actually want
317 * to use from /dev/crypto.
318 */
319 static int
320 cryptodev_usable_ciphers(const int **nids)
321 {
322 return (get_cryptodev_ciphers(nids));
323 }
324
325 static int
326 cryptodev_usable_digests(const int **nids)
327 {
328 #ifdef USE_CRYPTODEV_DIGESTS
329 return (get_cryptodev_digests(nids));
330 #else
331 /*
332 * XXXX just disable all digests for now, because it sucks.
333 * we need a better way to decide this - i.e. I may not
334 * want digests on slow cards like hifn on fast machines,
335 * but might want them on slow or loaded machines, etc.
336 * will also want them when using crypto cards that don't
337 * suck moose gonads - would be nice to be able to decide something
338 * as reasonable default without having hackery that's card dependent.
339 * of course, the default should probably be just do everything,
340 * with perhaps a sysctl to turn algoritms off (or have them off
341 * by default) on cards that generally suck like the hifn.
342 */
343 *nids = NULL;
344 return (0);
345 #endif
346 }
347
348 static int
349 cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
350 const unsigned char *in, size_t inl)
351 {
352 struct crypt_op cryp;
353 struct dev_crypto_state *state = ctx->cipher_data;
354 struct session_op *sess = &state->d_sess;
355 const void *iiv;
356 unsigned char save_iv[EVP_MAX_IV_LENGTH];
357
358 if (state->d_fd < 0)
359 return (0);
360 if (!inl)
361 return (1);
362 if ((inl % ctx->cipher->block_size) != 0)
363 return (0);
364
365 memset(&cryp, 0, sizeof(cryp));
366
367 cryp.ses = sess->ses;
368 cryp.flags = 0;
369 cryp.len = inl;
370 cryp.src = (caddr_t) in;
371 cryp.dst = (caddr_t) out;
372 cryp.mac = 0;
373
374 cryp.op = ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
375
376 if (ctx->cipher->iv_len) {
377 cryp.iv = (caddr_t) ctx->iv;
378 if (!ctx->encrypt) {
379 iiv = in + inl - ctx->cipher->iv_len;
380 memcpy(save_iv, iiv, ctx->cipher->iv_len);
381 }
382 } else
383 cryp.iv = NULL;
384
385 if (ioctl(state->d_fd, CIOCCRYPT, &cryp) == -1) {
386 /* XXX need better errror handling
387 * this can fail for a number of different reasons.
388 */
389 return (0);
390 }
391
392 if (ctx->cipher->iv_len) {
393 if (ctx->encrypt)
394 iiv = out + inl - ctx->cipher->iv_len;
395 else
396 iiv = save_iv;
397 memcpy(ctx->iv, iiv, ctx->cipher->iv_len);
398 }
399 return (1);
400 }
401
402 static int
403 cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
404 const unsigned char *iv, int enc)
405 {
406 struct dev_crypto_state *state = ctx->cipher_data;
407 struct session_op *sess = &state->d_sess;
408 int cipher = -1, i;
409
410 for (i = 0; ciphers[i].id; i++)
411 if (ctx->cipher->nid == ciphers[i].nid &&
412 ctx->cipher->iv_len <= ciphers[i].ivmax &&
413 ctx->key_len == ciphers[i].keylen) {
414 cipher = ciphers[i].id;
415 break;
416 }
417
418 if (!ciphers[i].id) {
419 state->d_fd = -1;
420 return (0);
421 }
422
423 memset(sess, 0, sizeof(struct session_op));
424
425 if ((state->d_fd = get_dev_crypto()) < 0)
426 return (0);
427
428 sess->key = (caddr_t)key;
429 sess->keylen = ctx->key_len;
430 sess->cipher = cipher;
431
432 if (ioctl(state->d_fd, CIOCGSESSION, sess) == -1) {
433 close(state->d_fd);
434 state->d_fd = -1;
435 return (0);
436 }
437 return (1);
438 }
439
440 /*
441 * free anything we allocated earlier when initting a
442 * session, and close the session.
443 */
444 static int
445 cryptodev_cleanup(EVP_CIPHER_CTX *ctx)
446 {
447 int ret = 0;
448 struct dev_crypto_state *state = ctx->cipher_data;
449 struct session_op *sess = &state->d_sess;
450
451 if (state->d_fd < 0)
452 return (0);
453
454 /* XXX if this ioctl fails, someting's wrong. the invoker
455 * may have called us with a bogus ctx, or we could
456 * have a device that for whatever reason just doesn't
457 * want to play ball - it's not clear what's right
458 * here - should this be an error? should it just
459 * increase a counter, hmm. For right now, we return
460 * 0 - I don't believe that to be "right". we could
461 * call the gorpy openssl lib error handlers that
462 * print messages to users of the library. hmm..
463 */
464
465 if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) == -1) {
466 ret = 0;
467 } else {
468 ret = 1;
469 }
470 close(state->d_fd);
471 state->d_fd = -1;
472
473 return (ret);
474 }
475
476 /*
477 * libcrypto EVP stuff - this is how we get wired to EVP so the engine
478 * gets called when libcrypto requests a cipher NID.
479 */
480
481 /* RC4 */
482 const EVP_CIPHER cryptodev_rc4 = {
483 NID_rc4,
484 1, 16, 0,
485 EVP_CIPH_VARIABLE_LENGTH,
486 cryptodev_init_key,
487 cryptodev_cipher,
488 cryptodev_cleanup,
489 sizeof(struct dev_crypto_state),
490 NULL,
491 NULL,
492 NULL
493 };
494
495 /* DES CBC EVP */
496 const EVP_CIPHER cryptodev_des_cbc = {
497 NID_des_cbc,
498 8, 8, 8,
499 EVP_CIPH_CBC_MODE,
500 cryptodev_init_key,
501 cryptodev_cipher,
502 cryptodev_cleanup,
503 sizeof(struct dev_crypto_state),
504 EVP_CIPHER_set_asn1_iv,
505 EVP_CIPHER_get_asn1_iv,
506 NULL
507 };
508
509 /* 3DES CBC EVP */
510 const EVP_CIPHER cryptodev_3des_cbc = {
511 NID_des_ede3_cbc,
512 8, 24, 8,
513 EVP_CIPH_CBC_MODE,
514 cryptodev_init_key,
515 cryptodev_cipher,
516 cryptodev_cleanup,
517 sizeof(struct dev_crypto_state),
518 EVP_CIPHER_set_asn1_iv,
519 EVP_CIPHER_get_asn1_iv,
520 NULL
521 };
522
523 const EVP_CIPHER cryptodev_bf_cbc = {
524 NID_bf_cbc,
525 8, 16, 8,
526 EVP_CIPH_CBC_MODE,
527 cryptodev_init_key,
528 cryptodev_cipher,
529 cryptodev_cleanup,
530 sizeof(struct dev_crypto_state),
531 EVP_CIPHER_set_asn1_iv,
532 EVP_CIPHER_get_asn1_iv,
533 NULL
534 };
535
536 const EVP_CIPHER cryptodev_cast_cbc = {
537 NID_cast5_cbc,
538 8, 16, 8,
539 EVP_CIPH_CBC_MODE,
540 cryptodev_init_key,
541 cryptodev_cipher,
542 cryptodev_cleanup,
543 sizeof(struct dev_crypto_state),
544 EVP_CIPHER_set_asn1_iv,
545 EVP_CIPHER_get_asn1_iv,
546 NULL
547 };
548
549 const EVP_CIPHER cryptodev_aes_cbc = {
550 NID_aes_128_cbc,
551 16, 16, 16,
552 EVP_CIPH_CBC_MODE,
553 cryptodev_init_key,
554 cryptodev_cipher,
555 cryptodev_cleanup,
556 sizeof(struct dev_crypto_state),
557 EVP_CIPHER_set_asn1_iv,
558 EVP_CIPHER_get_asn1_iv,
559 NULL
560 };
561
562 const EVP_CIPHER cryptodev_aes_192_cbc = {
563 NID_aes_192_cbc,
564 16, 24, 16,
565 EVP_CIPH_CBC_MODE,
566 cryptodev_init_key,
567 cryptodev_cipher,
568 cryptodev_cleanup,
569 sizeof(struct dev_crypto_state),
570 EVP_CIPHER_set_asn1_iv,
571 EVP_CIPHER_get_asn1_iv,
572 NULL
573 };
574
575 const EVP_CIPHER cryptodev_aes_256_cbc = {
576 NID_aes_256_cbc,
577 16, 32, 16,
578 EVP_CIPH_CBC_MODE,
579 cryptodev_init_key,
580 cryptodev_cipher,
581 cryptodev_cleanup,
582 sizeof(struct dev_crypto_state),
583 EVP_CIPHER_set_asn1_iv,
584 EVP_CIPHER_get_asn1_iv,
585 NULL
586 };
587
588 /*
589 * Registered by the ENGINE when used to find out how to deal with
590 * a particular NID in the ENGINE. this says what we'll do at the
591 * top level - note, that list is restricted by what we answer with
592 */
593 static int
594 cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
595 const int **nids, int nid)
596 {
597 if (!cipher)
598 return (cryptodev_usable_ciphers(nids));
599
600 switch (nid) {
601 case NID_rc4:
602 *cipher = &cryptodev_rc4;
603 break;
604 case NID_des_ede3_cbc:
605 *cipher = &cryptodev_3des_cbc;
606 break;
607 case NID_des_cbc:
608 *cipher = &cryptodev_des_cbc;
609 break;
610 case NID_bf_cbc:
611 *cipher = &cryptodev_bf_cbc;
612 break;
613 case NID_cast5_cbc:
614 *cipher = &cryptodev_cast_cbc;
615 break;
616 case NID_aes_128_cbc:
617 *cipher = &cryptodev_aes_cbc;
618 break;
619 case NID_aes_192_cbc:
620 *cipher = &cryptodev_aes_192_cbc;
621 break;
622 case NID_aes_256_cbc:
623 *cipher = &cryptodev_aes_256_cbc;
624 break;
625 default:
626 *cipher = NULL;
627 break;
628 }
629 return (*cipher != NULL);
630 }
631
632
633 #ifdef USE_CRYPTODEV_DIGESTS
634
635 /* convert digest type to cryptodev */
636 static int
637 digest_nid_to_cryptodev(int nid)
638 {
639 int i;
640
641 for (i = 0; digests[i].id; i++)
642 if (digests[i].nid == nid)
643 return (digests[i].id);
644 return (0);
645 }
646
647
648 static int
649 digest_key_length(int nid)
650 {
651 int i;
652
653 for (i = 0; digests[i].id; i++)
654 if (digests[i].nid == nid)
655 return digests[i].keylen;
656 return (0);
657 }
658
659
660 static int cryptodev_digest_init(EVP_MD_CTX *ctx)
661 {
662 struct dev_crypto_state *state = ctx->md_data;
663 struct session_op *sess = &state->d_sess;
664 int digest;
665
666 if ((digest = digest_nid_to_cryptodev(ctx->digest->type)) == NID_undef){
667 printf("cryptodev_digest_init: Can't get digest \n");
668 return (0);
669 }
670
671 memset(state, 0, sizeof(struct dev_crypto_state));
672
673 if ((state->d_fd = get_dev_crypto()) < 0) {
674 printf("cryptodev_digest_init: Can't get Dev \n");
675 return (0);
676 }
677
678 sess->mackey = state->dummy_mac_key;
679 sess->mackeylen = digest_key_length(ctx->digest->type);
680 sess->mac = digest;
681
682 if (ioctl(state->d_fd, CIOCGSESSION, sess) < 0) {
683 close(state->d_fd);
684 state->d_fd = -1;
685 printf("cryptodev_digest_init: Open session failed\n");
686 return (0);
687 }
688
689 return (1);
690 }
691
692 static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data,
693 size_t count)
694 {
695 struct crypt_op cryp;
696 struct dev_crypto_state *state = ctx->md_data;
697 struct session_op *sess = &state->d_sess;
698
699 if (!data || state->d_fd < 0) {
700 printf("cryptodev_digest_update: illegal inputs \n");
701 return (0);
702 }
703
704 if (!count) {
705 return (0);
706 }
707
708 if (!(ctx->flags & EVP_MD_CTX_FLAG_ONESHOT)) {
709 /* if application doesn't support one buffer */
710 state->mac_data = OPENSSL_realloc(state->mac_data, state->mac_len + count);
711
712 if (!state->mac_data) {
713 printf("cryptodev_digest_update: realloc failed\n");
714 return (0);
715 }
716
717 memcpy(state->mac_data + state->mac_len, data, count);
718 state->mac_len += count;
719
720 return (1);
721 }
722
723 memset(&cryp, 0, sizeof(cryp));
724
725 cryp.ses = sess->ses;
726 cryp.flags = 0;
727 cryp.len = count;
728 cryp.src = (caddr_t) data;
729 cryp.dst = NULL;
730 cryp.mac = (caddr_t) state->digest_res;
731 if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
732 printf("cryptodev_digest_update: digest failed\n");
733 return (0);
734 }
735 return (1);
736 }
737
738
739 static int cryptodev_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
740 {
741 struct crypt_op cryp;
742 struct dev_crypto_state *state = ctx->md_data;
743 struct session_op *sess = &state->d_sess;
744
745 int ret = 1;
746
747 if (!md || state->d_fd < 0) {
748 printf("cryptodev_digest_final: illegal input\n");
749 return(0);
750 }
751
752 if (! (ctx->flags & EVP_MD_CTX_FLAG_ONESHOT) ) {
753 /* if application doesn't support one buffer */
754 memset(&cryp, 0, sizeof(cryp));
755
756 cryp.ses = sess->ses;
757 cryp.flags = 0;
758 cryp.len = state->mac_len;
759 cryp.src = state->mac_data;
760 cryp.dst = NULL;
761 cryp.mac = (caddr_t)md;
762
763 if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
764 printf("cryptodev_digest_final: digest failed\n");
765 return (0);
766 }
767
768 return 1;
769 }
770
771 memcpy(md, state->digest_res, ctx->digest->md_size);
772
773 return (ret);
774 }
775
776
777 static int cryptodev_digest_cleanup(EVP_MD_CTX *ctx)
778 {
779 int ret = 1;
780 struct dev_crypto_state *state = ctx->md_data;
781 struct session_op *sess = &state->d_sess;
782
783 if (state->d_fd < 0) {
784 printf("cryptodev_digest_cleanup: illegal input\n");
785 return (0);
786 }
787
788 if (state->mac_data) {
789 OPENSSL_free(state->mac_data);
790 state->mac_data = NULL;
791 state->mac_len = 0;
792 }
793
794 if (state->copy)
795 return 1;
796
797 if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) < 0) {
798 printf("cryptodev_digest_cleanup: failed to close session\n");
799 ret = 0;
800 } else {
801 ret = 1;
802 }
803 close(state->d_fd);
804 state->d_fd = -1;
805
806 return (ret);
807 }
808
809 static int cryptodev_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from)
810 {
811 struct dev_crypto_state *fstate = from->md_data;
812 struct dev_crypto_state *dstate = to->md_data;
813
814 memcpy(dstate, fstate, sizeof(struct dev_crypto_state));
815
816 if (fstate->mac_len != 0) {
817 dstate->mac_data = OPENSSL_malloc(fstate->mac_len);
818 memcpy(dstate->mac_data, fstate->mac_data, fstate->mac_len);
819 }
820
821 dstate->copy = 1;
822
823 return 1;
824 }
825
826
827 const EVP_MD cryptodev_sha1 = {
828 NID_sha1,
829 NID_undef,
830 SHA_DIGEST_LENGTH,
831 EVP_MD_FLAG_ONESHOT,
832 cryptodev_digest_init,
833 cryptodev_digest_update,
834 cryptodev_digest_final,
835 cryptodev_digest_copy,
836 cryptodev_digest_cleanup,
837 EVP_PKEY_NULL_method,
838 SHA_CBLOCK,
839 sizeof(struct dev_crypto_state),
840 };
841
842 const EVP_MD cryptodev_md5 = {
843 NID_md5,
844 NID_undef,
845 16 /* MD5_DIGEST_LENGTH */,
846 EVP_MD_FLAG_ONESHOT,
847 cryptodev_digest_init,
848 cryptodev_digest_update,
849 cryptodev_digest_final,
850 cryptodev_digest_copy,
851 cryptodev_digest_cleanup,
852 EVP_PKEY_NULL_method,
853 64 /* MD5_CBLOCK */,
854 sizeof(struct dev_crypto_state),
855 };
856
857 #endif /* USE_CRYPTODEV_DIGESTS */
858
859
860 static int
861 cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
862 const int **nids, int nid)
863 {
864 if (!digest)
865 return (cryptodev_usable_digests(nids));
866
867 switch (nid) {
868 #ifdef USE_CRYPTODEV_DIGESTS
869 case NID_md5:
870 *digest = &cryptodev_md5;
871 break;
872 case NID_sha1:
873 *digest = &cryptodev_sha1;
874 break;
875 default:
876 #endif /* USE_CRYPTODEV_DIGESTS */
877 *digest = NULL;
878 break;
879 }
880 return (*digest != NULL);
881 }
882
883 /*
884 * Convert a BIGNUM to the representation that /dev/crypto needs.
885 * Upon completion of use, the caller is responsible for freeing
886 * crp->crp_p.
887 */
888 static int
889 bn2crparam(const BIGNUM *a, struct crparam *crp)
890 {
891 int i, j, k;
892 ssize_t bytes, bits;
893 u_char *b;
894
895 crp->crp_p = NULL;
896 crp->crp_nbits = 0;
897
898 bits = BN_num_bits(a);
899 bytes = (bits + 7) / 8;
900
901 b = malloc(bytes);
902 if (b == NULL)
903 return (1);
904 memset(b, 0, bytes);
905
906 crp->crp_p = (caddr_t) b;
907 crp->crp_nbits = bits;
908
909 for (i = 0, j = 0; i < a->top; i++) {
910 for (k = 0; k < BN_BITS2 / 8; k++) {
911 if ((j + k) >= bytes)
912 return (0);
913 b[j + k] = a->d[i] >> (k * 8);
914 }
915 j += BN_BITS2 / 8;
916 }
917 return (0);
918 }
919
920 /* Convert a /dev/crypto parameter to a BIGNUM */
921 static int
922 crparam2bn(struct crparam *crp, BIGNUM *a)
923 {
924 u_int8_t *pd;
925 int i, bytes;
926
927 bytes = (crp->crp_nbits + 7) / 8;
928
929 if (bytes == 0)
930 return (-1);
931
932 if ((pd = (u_int8_t *) malloc(bytes)) == NULL)
933 return (-1);
934
935 for (i = 0; i < bytes; i++)
936 pd[i] = crp->crp_p[bytes - i - 1];
937
938 BN_bin2bn(pd, bytes, a);
939 free(pd);
940
941 return (0);
942 }
943
944 static void
945 zapparams(struct crypt_kop *kop)
946 {
947 int i;
948
949 for (i = 0; i < kop->crk_iparams + kop->crk_oparams; i++) {
950 if (kop->crk_param[i].crp_p)
951 free(kop->crk_param[i].crp_p);
952 kop->crk_param[i].crp_p = NULL;
953 kop->crk_param[i].crp_nbits = 0;
954 }
955 }
956
957 static int
958 cryptodev_asym(struct crypt_kop *kop, int rlen, BIGNUM *r, int slen, BIGNUM *s)
959 {
960 int fd, ret = -1;
961
962 if ((fd = get_asym_dev_crypto()) < 0)
963 return (ret);
964
965 if (r) {
966 kop->crk_param[kop->crk_iparams].crp_p = calloc(rlen, sizeof(char));
967 kop->crk_param[kop->crk_iparams].crp_nbits = rlen * 8;
968 kop->crk_oparams++;
969 }
970 if (s) {
971 kop->crk_param[kop->crk_iparams+1].crp_p = calloc(slen, sizeof(char));
972 kop->crk_param[kop->crk_iparams+1].crp_nbits = slen * 8;
973 kop->crk_oparams++;
974 }
975
976 if (ioctl(fd, CIOCKEY, kop) == 0) {
977 if (r)
978 crparam2bn(&kop->crk_param[kop->crk_iparams], r);
979 if (s)
980 crparam2bn(&kop->crk_param[kop->crk_iparams+1], s);
981 ret = 0;
982 }
983
984 return (ret);
985 }
986
987 static int
988 cryptodev_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
989 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
990 {
991 struct crypt_kop kop;
992 int ret = 1;
993
994 /* Currently, we know we can do mod exp iff we can do any
995 * asymmetric operations at all.
996 */
997 if (cryptodev_asymfeat == 0) {
998 ret = BN_mod_exp(r, a, p, m, ctx);
999 return (ret);
1000 }
1001
1002 memset(&kop, 0, sizeof kop);
1003 kop.crk_op = CRK_MOD_EXP;
1004
1005 /* inputs: a^p % m */
1006 if (bn2crparam(a, &kop.crk_param[0]))
1007 goto err;
1008 if (bn2crparam(p, &kop.crk_param[1]))
1009 goto err;
1010 if (bn2crparam(m, &kop.crk_param[2]))
1011 goto err;
1012 kop.crk_iparams = 3;
1013
1014 if (cryptodev_asym(&kop, BN_num_bytes(m), r, 0, NULL) == -1) {
1015 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
1016 ret = meth->bn_mod_exp(r, a, p, m, ctx, in_mont);
1017 }
1018 err:
1019 zapparams(&kop);
1020 return (ret);
1021 }
1022
1023 static int
1024 cryptodev_rsa_nocrt_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
1025 {
1026 int r;
1027 ctx = BN_CTX_new();
1028 r = cryptodev_bn_mod_exp(r0, I, rsa->d, rsa->n, ctx, NULL);
1029 BN_CTX_free(ctx);
1030 return (r);
1031 }
1032
1033 static int
1034 cryptodev_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
1035 {
1036 struct crypt_kop kop;
1037 int ret = 1;
1038
1039 if (!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) {
1040 /* XXX 0 means failure?? */
1041 return (0);
1042 }
1043
1044 memset(&kop, 0, sizeof kop);
1045 kop.crk_op = CRK_MOD_EXP_CRT;
1046 /* inputs: rsa->p rsa->q I rsa->dmp1 rsa->dmq1 rsa->iqmp */
1047 if (bn2crparam(rsa->p, &kop.crk_param[0]))
1048 goto err;
1049 if (bn2crparam(rsa->q, &kop.crk_param[1]))
1050 goto err;
1051 if (bn2crparam(I, &kop.crk_param[2]))
1052 goto err;
1053 if (bn2crparam(rsa->dmp1, &kop.crk_param[3]))
1054 goto err;
1055 if (bn2crparam(rsa->dmq1, &kop.crk_param[4]))
1056 goto err;
1057 if (bn2crparam(rsa->iqmp, &kop.crk_param[5]))
1058 goto err;
1059 kop.crk_iparams = 6;
1060
1061 if (cryptodev_asym(&kop, BN_num_bytes(rsa->n), r0, 0, NULL) == -1) {
1062 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
1063 ret = (*meth->rsa_mod_exp)(r0, I, rsa, ctx);
1064 }
1065 err:
1066 zapparams(&kop);
1067 return (ret);
1068 }
1069
1070 static RSA_METHOD cryptodev_rsa = {
1071 "cryptodev RSA method",
1072 NULL, /* rsa_pub_enc */
1073 NULL, /* rsa_pub_dec */
1074 NULL, /* rsa_priv_enc */
1075 NULL, /* rsa_priv_dec */
1076 NULL,
1077 NULL,
1078 NULL, /* init */
1079 NULL, /* finish */
1080 0, /* flags */
1081 NULL, /* app_data */
1082 NULL, /* rsa_sign */
1083 NULL /* rsa_verify */
1084 };
1085
1086 static int
1087 cryptodev_dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
1088 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
1089 {
1090 return (cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx));
1091 }
1092
1093 static int
1094 cryptodev_dsa_dsa_mod_exp(DSA *dsa, BIGNUM *t1, BIGNUM *g,
1095 BIGNUM *u1, BIGNUM *pub_key, BIGNUM *u2, BIGNUM *p,
1096 BN_CTX *ctx, BN_MONT_CTX *mont)
1097 {
1098 BIGNUM t2;
1099 int ret = 0;
1100
1101 BN_init(&t2);
1102
1103 /* v = ( g^u1 * y^u2 mod p ) mod q */
1104 /* let t1 = g ^ u1 mod p */
1105 ret = 0;
1106
1107 if (!dsa->meth->bn_mod_exp(dsa,t1,dsa->g,u1,dsa->p,ctx,mont))
1108 goto err;
1109
1110 /* let t2 = y ^ u2 mod p */
1111 if (!dsa->meth->bn_mod_exp(dsa,&t2,dsa->pub_key,u2,dsa->p,ctx,mont))
1112 goto err;
1113 /* let u1 = t1 * t2 mod p */
1114 if (!BN_mod_mul(u1,t1,&t2,dsa->p,ctx))
1115 goto err;
1116
1117 BN_copy(t1,u1);
1118
1119 ret = 1;
1120 err:
1121 BN_free(&t2);
1122 return(ret);
1123 }
1124
1125 static DSA_SIG *
1126 cryptodev_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
1127 {
1128 struct crypt_kop kop;
1129 BIGNUM *r = NULL, *s = NULL;
1130 DSA_SIG *dsaret = NULL;
1131
1132 if ((r = BN_new()) == NULL)
1133 goto err;
1134 if ((s = BN_new()) == NULL) {
1135 BN_free(r);
1136 goto err;
1137 }
1138
1139 memset(&kop, 0, sizeof kop);
1140 kop.crk_op = CRK_DSA_SIGN;
1141
1142 /* inputs: dgst dsa->p dsa->q dsa->g dsa->priv_key */
1143 kop.crk_param[0].crp_p = (caddr_t)dgst;
1144 kop.crk_param[0].crp_nbits = dlen * 8;
1145 if (bn2crparam(dsa->p, &kop.crk_param[1]))
1146 goto err;
1147 if (bn2crparam(dsa->q, &kop.crk_param[2]))
1148 goto err;
1149 if (bn2crparam(dsa->g, &kop.crk_param[3]))
1150 goto err;
1151 if (bn2crparam(dsa->priv_key, &kop.crk_param[4]))
1152 goto err;
1153 kop.crk_iparams = 5;
1154
1155 if (cryptodev_asym(&kop, BN_num_bytes(dsa->q), r,
1156 BN_num_bytes(dsa->q), s) == 0) {
1157 dsaret = DSA_SIG_new();
1158 dsaret->r = r;
1159 dsaret->s = s;
1160 } else {
1161 const DSA_METHOD *meth = DSA_OpenSSL();
1162 BN_free(r);
1163 BN_free(s);
1164 dsaret = (meth->dsa_do_sign)(dgst, dlen, dsa);
1165 }
1166 err:
1167 kop.crk_param[0].crp_p = NULL;
1168 zapparams(&kop);
1169 return (dsaret);
1170 }
1171
1172 static int
1173 cryptodev_dsa_verify(const unsigned char *dgst, int dlen,
1174 DSA_SIG *sig, DSA *dsa)
1175 {
1176 struct crypt_kop kop;
1177 int dsaret = 1;
1178
1179 memset(&kop, 0, sizeof kop);
1180 kop.crk_op = CRK_DSA_VERIFY;
1181
1182 /* inputs: dgst dsa->p dsa->q dsa->g dsa->pub_key sig->r sig->s */
1183 kop.crk_param[0].crp_p = (caddr_t)dgst;
1184 kop.crk_param[0].crp_nbits = dlen * 8;
1185 if (bn2crparam(dsa->p, &kop.crk_param[1]))
1186 goto err;
1187 if (bn2crparam(dsa->q, &kop.crk_param[2]))
1188 goto err;
1189 if (bn2crparam(dsa->g, &kop.crk_param[3]))
1190 goto err;
1191 if (bn2crparam(dsa->pub_key, &kop.crk_param[4]))
1192 goto err;
1193 if (bn2crparam(sig->r, &kop.crk_param[5]))
1194 goto err;
1195 if (bn2crparam(sig->s, &kop.crk_param[6]))
1196 goto err;
1197 kop.crk_iparams = 7;
1198
1199 if (cryptodev_asym(&kop, 0, NULL, 0, NULL) == 0) {
1200 dsaret = kop.crk_status;
1201 } else {
1202 const DSA_METHOD *meth = DSA_OpenSSL();
1203
1204 dsaret = (meth->dsa_do_verify)(dgst, dlen, sig, dsa);
1205 }
1206 err:
1207 kop.crk_param[0].crp_p = NULL;
1208 zapparams(&kop);
1209 return (dsaret);
1210 }
1211
1212 static DSA_METHOD cryptodev_dsa = {
1213 "cryptodev DSA method",
1214 NULL,
1215 NULL, /* dsa_sign_setup */
1216 NULL,
1217 NULL, /* dsa_mod_exp */
1218 NULL,
1219 NULL, /* init */
1220 NULL, /* finish */
1221 0, /* flags */
1222 NULL /* app_data */
1223 };
1224
1225 static int
1226 cryptodev_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
1227 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
1228 BN_MONT_CTX *m_ctx)
1229 {
1230 return (cryptodev_bn_mod_exp(r, a, p, m, ctx, m_ctx));
1231 }
1232
1233 static int
1234 cryptodev_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh)
1235 {
1236 struct crypt_kop kop;
1237 int dhret = 1;
1238 int fd, keylen;
1239
1240 if ((fd = get_asym_dev_crypto()) < 0) {
1241 const DH_METHOD *meth = DH_OpenSSL();
1242
1243 return ((meth->compute_key)(key, pub_key, dh));
1244 }
1245
1246 keylen = BN_num_bits(dh->p);
1247
1248 memset(&kop, 0, sizeof kop);
1249 kop.crk_op = CRK_DH_COMPUTE_KEY;
1250
1251 /* inputs: dh->priv_key pub_key dh->p key */
1252 if (bn2crparam(dh->priv_key, &kop.crk_param[0]))
1253 goto err;
1254 if (bn2crparam(pub_key, &kop.crk_param[1]))
1255 goto err;
1256 if (bn2crparam(dh->p, &kop.crk_param[2]))
1257 goto err;
1258 kop.crk_iparams = 3;
1259
1260 kop.crk_param[3].crp_p = (caddr_t) key;
1261 kop.crk_param[3].crp_nbits = keylen * 8;
1262 kop.crk_oparams = 1;
1263
1264 if (ioctl(fd, CIOCKEY, &kop) == -1) {
1265 const DH_METHOD *meth = DH_OpenSSL();
1266
1267 dhret = (meth->compute_key)(key, pub_key, dh);
1268 }
1269 err:
1270 kop.crk_param[3].crp_p = NULL;
1271 zapparams(&kop);
1272 return (dhret);
1273 }
1274
1275 static DH_METHOD cryptodev_dh = {
1276 "cryptodev DH method",
1277 NULL, /* cryptodev_dh_generate_key */
1278 NULL,
1279 NULL,
1280 NULL,
1281 NULL,
1282 0, /* flags */
1283 NULL /* app_data */
1284 };
1285
1286 /*
1287 * ctrl right now is just a wrapper that doesn't do much
1288 * but I expect we'll want some options soon.
1289 */
1290 static int
1291 cryptodev_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
1292 {
1293 #ifdef HAVE_SYSLOG_R
1294 struct syslog_data sd = SYSLOG_DATA_INIT;
1295 #endif
1296
1297 switch (cmd) {
1298 default:
1299 #ifdef HAVE_SYSLOG_R
1300 syslog_r(LOG_ERR, &sd,
1301 "cryptodev_ctrl: unknown command %d", cmd);
1302 #else
1303 syslog(LOG_ERR, "cryptodev_ctrl: unknown command %d", cmd);
1304 #endif
1305 break;
1306 }
1307 return (1);
1308 }
1309
1310 void
1311 ENGINE_load_cryptodev(void)
1312 {
1313 ENGINE *engine = ENGINE_new();
1314 int fd;
1315
1316 if (engine == NULL)
1317 return;
1318 if ((fd = get_dev_crypto()) < 0) {
1319 ENGINE_free(engine);
1320 return;
1321 }
1322
1323 /*
1324 * find out what asymmetric crypto algorithms we support
1325 */
1326 if (ioctl(fd, CIOCASYMFEAT, &cryptodev_asymfeat) == -1) {
1327 close(fd);
1328 ENGINE_free(engine);
1329 return;
1330 }
1331 close(fd);
1332
1333 if (!ENGINE_set_id(engine, "cryptodev") ||
1334 !ENGINE_set_name(engine, "BSD cryptodev engine") ||
1335 !ENGINE_set_ciphers(engine, cryptodev_engine_ciphers) ||
1336 !ENGINE_set_digests(engine, cryptodev_engine_digests) ||
1337 !ENGINE_set_ctrl_function(engine, cryptodev_ctrl) ||
1338 !ENGINE_set_cmd_defns(engine, cryptodev_defns)) {
1339 ENGINE_free(engine);
1340 return;
1341 }
1342
1343 if (ENGINE_set_RSA(engine, &cryptodev_rsa)) {
1344 const RSA_METHOD *rsa_meth = RSA_PKCS1_SSLeay();
1345
1346 cryptodev_rsa.bn_mod_exp = rsa_meth->bn_mod_exp;
1347 cryptodev_rsa.rsa_mod_exp = rsa_meth->rsa_mod_exp;
1348 cryptodev_rsa.rsa_pub_enc = rsa_meth->rsa_pub_enc;
1349 cryptodev_rsa.rsa_pub_dec = rsa_meth->rsa_pub_dec;
1350 cryptodev_rsa.rsa_priv_enc = rsa_meth->rsa_priv_enc;
1351 cryptodev_rsa.rsa_priv_dec = rsa_meth->rsa_priv_dec;
1352 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1353 cryptodev_rsa.bn_mod_exp = cryptodev_bn_mod_exp;
1354 if (cryptodev_asymfeat & CRF_MOD_EXP_CRT)
1355 cryptodev_rsa.rsa_mod_exp =
1356 cryptodev_rsa_mod_exp;
1357 else
1358 cryptodev_rsa.rsa_mod_exp =
1359 cryptodev_rsa_nocrt_mod_exp;
1360 }
1361 }
1362
1363 if (ENGINE_set_DSA(engine, &cryptodev_dsa)) {
1364 const DSA_METHOD *meth = DSA_OpenSSL();
1365
1366 memcpy(&cryptodev_dsa, meth, sizeof(DSA_METHOD));
1367 if (cryptodev_asymfeat & CRF_DSA_SIGN)
1368 cryptodev_dsa.dsa_do_sign = cryptodev_dsa_do_sign;
1369 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1370 cryptodev_dsa.bn_mod_exp = cryptodev_dsa_bn_mod_exp;
1371 cryptodev_dsa.dsa_mod_exp = cryptodev_dsa_dsa_mod_exp;
1372 }
1373 if (cryptodev_asymfeat & CRF_DSA_VERIFY)
1374 cryptodev_dsa.dsa_do_verify = cryptodev_dsa_verify;
1375 }
1376
1377 if (ENGINE_set_DH(engine, &cryptodev_dh)){
1378 const DH_METHOD *dh_meth = DH_OpenSSL();
1379
1380 cryptodev_dh.generate_key = dh_meth->generate_key;
1381 cryptodev_dh.compute_key = dh_meth->compute_key;
1382 cryptodev_dh.bn_mod_exp = dh_meth->bn_mod_exp;
1383 if (cryptodev_asymfeat & CRF_MOD_EXP) {
1384 cryptodev_dh.bn_mod_exp = cryptodev_mod_exp_dh;
1385 if (cryptodev_asymfeat & CRF_DH_COMPUTE_KEY)
1386 cryptodev_dh.compute_key =
1387 cryptodev_dh_compute_key;
1388 }
1389 }
1390
1391 ENGINE_add(engine);
1392 ENGINE_free(engine);
1393 ERR_clear_error();
1394 }
1395
1396 #endif /* HAVE_CRYPTODEV */
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