1 /* crypto/engine/hw_ubsec.c */
3 * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project
4 * 2000. Cloned shamelessly by Joe Tardo.
6 /* ====================================================================
7 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
62 #include <openssl/crypto.h>
63 #include <openssl/buffer.h>
64 #include <openssl/dso.h>
65 #include <openssl/engine.h>
66 #ifndef OPENSSL_NO_RSA
67 # include <openssl/rsa.h>
69 #ifndef OPENSSL_NO_DSA
70 # include <openssl/dsa.h>
73 # include <openssl/dh.h>
75 #include <openssl/bn.h>
78 # ifndef OPENSSL_NO_HW_UBSEC
81 # include "hw_ubsec.h"
83 # include "vendor_defns/hw_ubsec.h"
86 # define UBSEC_LIB_NAME "ubsec engine"
87 # include "e_ubsec_err.c"
89 # define FAIL_TO_SOFTWARE -15
91 static int ubsec_destroy(ENGINE *e);
92 static int ubsec_init(ENGINE *e);
93 static int ubsec_finish(ENGINE *e);
94 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void));
95 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
96 const BIGNUM *m, BN_CTX *ctx);
97 # ifndef OPENSSL_NO_RSA
98 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
99 const BIGNUM *q, const BIGNUM *dp,
100 const BIGNUM *dq, const BIGNUM *qinv,
102 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
104 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
105 const BIGNUM *m, BN_CTX *ctx,
108 # ifndef OPENSSL_NO_DSA
110 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
111 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
112 BN_CTX *ctx, BN_MONT_CTX *in_mont);
113 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
114 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
117 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen,
119 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
120 DSA_SIG *sig, DSA *dsa);
122 # ifndef OPENSSL_NO_DH
123 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
124 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
126 static int ubsec_dh_compute_key(unsigned char *key, const BIGNUM *pub_key,
128 static int ubsec_dh_generate_key(DH *dh);
132 static int ubsec_rand_bytes(unsigned char *buf, int num);
133 static int ubsec_rand_status(void);
136 # define UBSEC_CMD_SO_PATH ENGINE_CMD_BASE
137 static const ENGINE_CMD_DEFN ubsec_cmd_defns[] = {
140 "Specifies the path to the 'ubsec' shared library",
141 ENGINE_CMD_FLAG_STRING},
145 # ifndef OPENSSL_NO_RSA
146 /* Our internal RSA_METHOD that we provide pointers to */
147 static RSA_METHOD ubsec_rsa = {
165 # ifndef OPENSSL_NO_DSA
166 /* Our internal DSA_METHOD that we provide pointers to */
167 static DSA_METHOD ubsec_dsa = {
169 ubsec_dsa_do_sign, /* dsa_do_sign */
170 NULL, /* dsa_sign_setup */
171 ubsec_dsa_verify, /* dsa_do_verify */
172 NULL, /* ubsec_dsa_mod_exp *//* dsa_mod_exp */
173 NULL, /* ubsec_mod_exp_dsa *//* bn_mod_exp */
178 NULL, /* dsa_paramgen */
179 NULL /* dsa_keygen */
183 # ifndef OPENSSL_NO_DH
184 /* Our internal DH_METHOD that we provide pointers to */
185 static DH_METHOD ubsec_dh = {
187 ubsec_dh_generate_key,
188 ubsec_dh_compute_key,
198 /* Constants used when creating the ENGINE */
199 static const char *engine_ubsec_id = "ubsec";
200 static const char *engine_ubsec_name = "UBSEC hardware engine support";
203 * This internal function is used by ENGINE_ubsec() and possibly by the
204 * "dynamic" ENGINE support too
206 static int bind_helper(ENGINE *e)
208 # ifndef OPENSSL_NO_RSA
209 const RSA_METHOD *meth1;
211 # ifndef OPENSSL_NO_DH
212 # ifndef HAVE_UBSEC_DH
213 const DH_METHOD *meth3;
214 # endif /* HAVE_UBSEC_DH */
216 if (!ENGINE_set_id(e, engine_ubsec_id) ||
217 !ENGINE_set_name(e, engine_ubsec_name) ||
218 # ifndef OPENSSL_NO_RSA
219 !ENGINE_set_RSA(e, &ubsec_rsa) ||
221 # ifndef OPENSSL_NO_DSA
222 !ENGINE_set_DSA(e, &ubsec_dsa) ||
224 # ifndef OPENSSL_NO_DH
225 !ENGINE_set_DH(e, &ubsec_dh) ||
227 !ENGINE_set_destroy_function(e, ubsec_destroy) ||
228 !ENGINE_set_init_function(e, ubsec_init) ||
229 !ENGINE_set_finish_function(e, ubsec_finish) ||
230 !ENGINE_set_ctrl_function(e, ubsec_ctrl) ||
231 !ENGINE_set_cmd_defns(e, ubsec_cmd_defns))
234 # ifndef OPENSSL_NO_RSA
236 * We know that the "PKCS1_SSLeay()" functions hook properly to the
237 * Broadcom-specific mod_exp and mod_exp_crt so we use those functions.
238 * NB: We don't use ENGINE_openssl() or anything "more generic" because
239 * something like the RSAref code may not hook properly, and if you own
240 * one of these cards then you have the right to do RSA operations on it
243 meth1 = RSA_PKCS1_SSLeay();
244 ubsec_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
245 ubsec_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
246 ubsec_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
247 ubsec_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
250 # ifndef OPENSSL_NO_DH
251 # ifndef HAVE_UBSEC_DH
252 /* Much the same for Diffie-Hellman */
253 meth3 = DH_OpenSSL();
254 ubsec_dh.generate_key = meth3->generate_key;
255 ubsec_dh.compute_key = meth3->compute_key;
256 # endif /* HAVE_UBSEC_DH */
259 /* Ensure the ubsec error handling is set up */
260 ERR_load_UBSEC_strings();
264 # ifdef OPENSSL_NO_DYNAMIC_ENGINE
265 static ENGINE *engine_ubsec(void)
267 ENGINE *ret = ENGINE_new();
270 if (!bind_helper(ret)) {
277 void ENGINE_load_ubsec(void)
279 /* Copied from eng_[openssl|dyn].c */
280 ENGINE *toadd = engine_ubsec();
290 * This is a process-global DSO handle used for loading and unloading the
291 * UBSEC library. NB: This is only set (or unset) during an init() or
292 * finish() call (reference counts permitting) and they're operating with
293 * global locks, so this should be thread-safe implicitly.
296 static DSO *ubsec_dso = NULL;
299 * These are the function pointers that are (un)set when the library has
300 * successfully (un)loaded.
303 static t_UBSEC_ubsec_bytes_to_bits *p_UBSEC_ubsec_bytes_to_bits = NULL;
304 static t_UBSEC_ubsec_bits_to_bytes *p_UBSEC_ubsec_bits_to_bytes = NULL;
305 static t_UBSEC_ubsec_open *p_UBSEC_ubsec_open = NULL;
306 static t_UBSEC_ubsec_close *p_UBSEC_ubsec_close = NULL;
307 # ifndef OPENSSL_NO_DH
308 static t_UBSEC_diffie_hellman_generate_ioctl
309 * p_UBSEC_diffie_hellman_generate_ioctl = NULL;
310 static t_UBSEC_diffie_hellman_agree_ioctl *p_UBSEC_diffie_hellman_agree_ioctl
313 # ifndef OPENSSL_NO_RSA
314 static t_UBSEC_rsa_mod_exp_ioctl *p_UBSEC_rsa_mod_exp_ioctl = NULL;
315 static t_UBSEC_rsa_mod_exp_crt_ioctl *p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
317 # ifndef OPENSSL_NO_DSA
318 static t_UBSEC_dsa_sign_ioctl *p_UBSEC_dsa_sign_ioctl = NULL;
319 static t_UBSEC_dsa_verify_ioctl *p_UBSEC_dsa_verify_ioctl = NULL;
321 static t_UBSEC_math_accelerate_ioctl *p_UBSEC_math_accelerate_ioctl = NULL;
322 static t_UBSEC_rng_ioctl *p_UBSEC_rng_ioctl = NULL;
323 static t_UBSEC_max_key_len_ioctl *p_UBSEC_max_key_len_ioctl = NULL;
325 static int max_key_len = 1024; /* ??? */
328 * These are the static string constants for the DSO file name and the function
329 * symbol names to bind to.
332 static const char *UBSEC_LIBNAME = NULL;
333 static const char *get_UBSEC_LIBNAME(void)
336 return UBSEC_LIBNAME;
340 static void free_UBSEC_LIBNAME(void)
342 OPENSSL_free(UBSEC_LIBNAME);
343 UBSEC_LIBNAME = NULL;
346 static long set_UBSEC_LIBNAME(const char *name)
348 free_UBSEC_LIBNAME();
349 return (((UBSEC_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
352 static const char *UBSEC_F1 = "ubsec_bytes_to_bits";
353 static const char *UBSEC_F2 = "ubsec_bits_to_bytes";
354 static const char *UBSEC_F3 = "ubsec_open";
355 static const char *UBSEC_F4 = "ubsec_close";
356 # ifndef OPENSSL_NO_DH
357 static const char *UBSEC_F5 = "diffie_hellman_generate_ioctl";
358 static const char *UBSEC_F6 = "diffie_hellman_agree_ioctl";
360 /* #ifndef OPENSSL_NO_RSA */
361 static const char *UBSEC_F7 = "rsa_mod_exp_ioctl";
362 static const char *UBSEC_F8 = "rsa_mod_exp_crt_ioctl";
364 # ifndef OPENSSL_NO_DSA
365 static const char *UBSEC_F9 = "dsa_sign_ioctl";
366 static const char *UBSEC_F10 = "dsa_verify_ioctl";
368 static const char *UBSEC_F11 = "math_accelerate_ioctl";
369 static const char *UBSEC_F12 = "rng_ioctl";
370 static const char *UBSEC_F13 = "ubsec_max_key_len_ioctl";
372 /* Destructor (complements the "ENGINE_ubsec()" constructor) */
373 static int ubsec_destroy(ENGINE *e)
375 free_UBSEC_LIBNAME();
376 ERR_unload_UBSEC_strings();
380 /* (de)initialisation functions. */
381 static int ubsec_init(ENGINE *e)
383 t_UBSEC_ubsec_bytes_to_bits *p1;
384 t_UBSEC_ubsec_bits_to_bytes *p2;
385 t_UBSEC_ubsec_open *p3;
386 t_UBSEC_ubsec_close *p4;
387 # ifndef OPENSSL_NO_DH
388 t_UBSEC_diffie_hellman_generate_ioctl *p5;
389 t_UBSEC_diffie_hellman_agree_ioctl *p6;
391 /* #ifndef OPENSSL_NO_RSA */
392 t_UBSEC_rsa_mod_exp_ioctl *p7;
393 t_UBSEC_rsa_mod_exp_crt_ioctl *p8;
395 # ifndef OPENSSL_NO_DSA
396 t_UBSEC_dsa_sign_ioctl *p9;
397 t_UBSEC_dsa_verify_ioctl *p10;
399 t_UBSEC_math_accelerate_ioctl *p11;
400 t_UBSEC_rng_ioctl *p12;
401 t_UBSEC_max_key_len_ioctl *p13;
404 if (ubsec_dso != NULL) {
405 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_ALREADY_LOADED);
409 * Attempt to load libubsec.so/ubsec.dll/whatever.
411 ubsec_dso = DSO_load(NULL, get_UBSEC_LIBNAME(), NULL, 0);
412 if (ubsec_dso == NULL) {
413 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
417 if (!(p1 = (t_UBSEC_ubsec_bytes_to_bits *)
418 DSO_bind_func(ubsec_dso, UBSEC_F1))
419 || !(p2 = (t_UBSEC_ubsec_bits_to_bytes *)
420 DSO_bind_func(ubsec_dso, UBSEC_F2))
421 || !(p3 = (t_UBSEC_ubsec_open *)
422 DSO_bind_func(ubsec_dso, UBSEC_F3))
423 || !(p4 = (t_UBSEC_ubsec_close *)
424 DSO_bind_func(ubsec_dso, UBSEC_F4))
425 # ifndef OPENSSL_NO_DH
426 || !(p5 = (t_UBSEC_diffie_hellman_generate_ioctl *)
427 DSO_bind_func(ubsec_dso, UBSEC_F5))
428 || !(p6 = (t_UBSEC_diffie_hellman_agree_ioctl *)
429 DSO_bind_func(ubsec_dso, UBSEC_F6))
431 /* #ifndef OPENSSL_NO_RSA */
432 || !(p7 = (t_UBSEC_rsa_mod_exp_ioctl *)
433 DSO_bind_func(ubsec_dso, UBSEC_F7))
434 || !(p8 = (t_UBSEC_rsa_mod_exp_crt_ioctl *)
435 DSO_bind_func(ubsec_dso, UBSEC_F8))
437 # ifndef OPENSSL_NO_DSA
438 || !(p9 = (t_UBSEC_dsa_sign_ioctl *)
439 DSO_bind_func(ubsec_dso, UBSEC_F9))
440 || !(p10 = (t_UBSEC_dsa_verify_ioctl *)
441 DSO_bind_func(ubsec_dso, UBSEC_F10))
443 || !(p11 = (t_UBSEC_math_accelerate_ioctl *)
444 DSO_bind_func(ubsec_dso, UBSEC_F11))
445 || !(p12 = (t_UBSEC_rng_ioctl *)
446 DSO_bind_func(ubsec_dso, UBSEC_F12))
447 || !(p13 = (t_UBSEC_max_key_len_ioctl *)
448 DSO_bind_func(ubsec_dso, UBSEC_F13))) {
449 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
453 /* Copy the pointers */
454 p_UBSEC_ubsec_bytes_to_bits = p1;
455 p_UBSEC_ubsec_bits_to_bytes = p2;
456 p_UBSEC_ubsec_open = p3;
457 p_UBSEC_ubsec_close = p4;
458 # ifndef OPENSSL_NO_DH
459 p_UBSEC_diffie_hellman_generate_ioctl = p5;
460 p_UBSEC_diffie_hellman_agree_ioctl = p6;
462 # ifndef OPENSSL_NO_RSA
463 p_UBSEC_rsa_mod_exp_ioctl = p7;
464 p_UBSEC_rsa_mod_exp_crt_ioctl = p8;
466 # ifndef OPENSSL_NO_DSA
467 p_UBSEC_dsa_sign_ioctl = p9;
468 p_UBSEC_dsa_verify_ioctl = p10;
470 p_UBSEC_math_accelerate_ioctl = p11;
471 p_UBSEC_rng_ioctl = p12;
472 p_UBSEC_max_key_len_ioctl = p13;
474 /* Perform an open to see if there's actually any unit running. */
475 if (((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) > 0)
476 && (p_UBSEC_max_key_len_ioctl(fd, &max_key_len) == 0)) {
477 p_UBSEC_ubsec_close(fd);
480 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
486 p_UBSEC_ubsec_bytes_to_bits = NULL;
487 p_UBSEC_ubsec_bits_to_bytes = NULL;
488 p_UBSEC_ubsec_open = NULL;
489 p_UBSEC_ubsec_close = NULL;
490 # ifndef OPENSSL_NO_DH
491 p_UBSEC_diffie_hellman_generate_ioctl = NULL;
492 p_UBSEC_diffie_hellman_agree_ioctl = NULL;
494 # ifndef OPENSSL_NO_RSA
495 p_UBSEC_rsa_mod_exp_ioctl = NULL;
496 p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
498 # ifndef OPENSSL_NO_DSA
499 p_UBSEC_dsa_sign_ioctl = NULL;
500 p_UBSEC_dsa_verify_ioctl = NULL;
502 p_UBSEC_math_accelerate_ioctl = NULL;
503 p_UBSEC_rng_ioctl = NULL;
504 p_UBSEC_max_key_len_ioctl = NULL;
509 static int ubsec_finish(ENGINE *e)
511 free_UBSEC_LIBNAME();
512 if (ubsec_dso == NULL) {
513 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_NOT_LOADED);
516 if (!DSO_free(ubsec_dso)) {
517 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_DSO_FAILURE);
521 p_UBSEC_ubsec_bytes_to_bits = NULL;
522 p_UBSEC_ubsec_bits_to_bytes = NULL;
523 p_UBSEC_ubsec_open = NULL;
524 p_UBSEC_ubsec_close = NULL;
525 # ifndef OPENSSL_NO_DH
526 p_UBSEC_diffie_hellman_generate_ioctl = NULL;
527 p_UBSEC_diffie_hellman_agree_ioctl = NULL;
529 # ifndef OPENSSL_NO_RSA
530 p_UBSEC_rsa_mod_exp_ioctl = NULL;
531 p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
533 # ifndef OPENSSL_NO_DSA
534 p_UBSEC_dsa_sign_ioctl = NULL;
535 p_UBSEC_dsa_verify_ioctl = NULL;
537 p_UBSEC_math_accelerate_ioctl = NULL;
538 p_UBSEC_rng_ioctl = NULL;
539 p_UBSEC_max_key_len_ioctl = NULL;
543 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
545 int initialised = ((ubsec_dso == NULL) ? 0 : 1);
547 case UBSEC_CMD_SO_PATH:
549 UBSECerr(UBSEC_F_UBSEC_CTRL, ERR_R_PASSED_NULL_PARAMETER);
553 UBSECerr(UBSEC_F_UBSEC_CTRL, UBSEC_R_ALREADY_LOADED);
556 return set_UBSEC_LIBNAME((const char *)p);
560 UBSECerr(UBSEC_F_UBSEC_CTRL, UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED);
564 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
565 const BIGNUM *m, BN_CTX *ctx)
570 if (ubsec_dso == NULL) {
571 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_NOT_LOADED);
575 /* Check if hardware can't handle this argument. */
576 y_len = BN_num_bits(m);
577 if (y_len > max_key_len) {
578 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
579 return BN_mod_exp(r, a, p, m, ctx);
582 if (!bn_wexpand(r, m->top)) {
583 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL);
587 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
589 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_UNIT_FAILURE);
590 return BN_mod_exp(r, a, p, m, ctx);
593 if (p_UBSEC_rsa_mod_exp_ioctl(fd, (unsigned char *)a->d, BN_num_bits(a),
594 (unsigned char *)m->d, BN_num_bits(m),
595 (unsigned char *)p->d, BN_num_bits(p),
596 (unsigned char *)r->d, &y_len) != 0) {
597 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
598 p_UBSEC_ubsec_close(fd);
600 return BN_mod_exp(r, a, p, m, ctx);
603 p_UBSEC_ubsec_close(fd);
605 r->top = (BN_num_bits(m) + BN_BITS2 - 1) / BN_BITS2;
609 # ifndef OPENSSL_NO_RSA
610 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
615 if (!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) {
616 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP, UBSEC_R_MISSING_KEY_COMPONENTS);
620 to_return = ubsec_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
621 rsa->dmq1, rsa->iqmp, ctx);
622 if (to_return == FAIL_TO_SOFTWARE) {
624 * Do in software as hardware failed.
626 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
627 to_return = (*meth->rsa_mod_exp) (r0, I, rsa, ctx);
633 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
634 const BIGNUM *q, const BIGNUM *dp,
635 const BIGNUM *dq, const BIGNUM *qinv,
640 y_len = BN_num_bits(p) + BN_num_bits(q);
642 /* Check if hardware can't handle this argument. */
643 if (y_len > max_key_len) {
644 UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT,
645 UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
646 return FAIL_TO_SOFTWARE;
649 if (!bn_wexpand(r, p->top + q->top + 1)) {
650 UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_BN_EXPAND_FAIL);
654 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
656 UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_UNIT_FAILURE);
657 return FAIL_TO_SOFTWARE;
660 if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd,
661 (unsigned char *)a->d, BN_num_bits(a),
662 (unsigned char *)qinv->d,
664 (unsigned char *)dp->d, BN_num_bits(dp),
665 (unsigned char *)p->d, BN_num_bits(p),
666 (unsigned char *)dq->d, BN_num_bits(dq),
667 (unsigned char *)q->d, BN_num_bits(q),
668 (unsigned char *)r->d, &y_len) != 0) {
669 UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_REQUEST_FAILED);
670 p_UBSEC_ubsec_close(fd);
671 return FAIL_TO_SOFTWARE;
674 p_UBSEC_ubsec_close(fd);
676 r->top = (BN_num_bits(p) + BN_num_bits(q) + BN_BITS2 - 1) / BN_BITS2;
681 # ifndef OPENSSL_NO_RSA
684 * This function is aliased to mod_exp (with the mont stuff dropped).
686 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
687 const BIGNUM *m, BN_CTX *ctx,
692 /* Do in software if the key is too large for the hardware. */
693 if (BN_num_bits(m) > max_key_len) {
694 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
695 ret = (*meth->bn_mod_exp) (r, a, p, m, ctx, m_ctx);
697 ret = ubsec_mod_exp(r, a, p, m, ctx);
704 # ifndef OPENSSL_NO_DH
705 /* This function is aliased to mod_exp (with the dh and mont dropped). */
706 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
707 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
710 return ubsec_mod_exp(r, a, p, m, ctx);
714 # ifndef OPENSSL_NO_DSA
715 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen,
718 DSA_SIG *to_return = NULL;
719 int s_len = 160, r_len = 160, d_len, fd;
720 BIGNUM m, *r = NULL, *s = NULL;
726 if ((s == NULL) || (r == NULL))
729 d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dlen);
731 if (!bn_wexpand(r, (160 + BN_BITS2 - 1) / BN_BITS2) ||
732 (!bn_wexpand(s, (160 + BN_BITS2 - 1) / BN_BITS2))) {
733 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_BN_EXPAND_FAIL);
737 if (BN_bin2bn(dgst, dlen, &m) == NULL) {
738 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_BN_EXPAND_FAIL);
742 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
743 const DSA_METHOD *meth;
745 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_UNIT_FAILURE);
746 meth = DSA_OpenSSL();
747 to_return = meth->dsa_do_sign(dgst, dlen, dsa);
751 if (p_UBSEC_dsa_sign_ioctl(fd,
752 /* compute hash before signing */
753 0, (unsigned char *)dgst, d_len, NULL,
754 /* compute random value */
756 (unsigned char *)dsa->p->d,
758 (unsigned char *)dsa->q->d,
760 (unsigned char *)dsa->g->d,
762 (unsigned char *)dsa->priv_key->d,
763 BN_num_bits(dsa->priv_key),
764 (unsigned char *)r->d, &r_len,
765 (unsigned char *)s->d, &s_len) != 0) {
766 const DSA_METHOD *meth;
768 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_REQUEST_FAILED);
769 p_UBSEC_ubsec_close(fd);
770 meth = DSA_OpenSSL();
771 to_return = meth->dsa_do_sign(dgst, dlen, dsa);
776 p_UBSEC_ubsec_close(fd);
778 r->top = (160 + BN_BITS2 - 1) / BN_BITS2;
779 s->top = (160 + BN_BITS2 - 1) / BN_BITS2;
781 to_return = DSA_SIG_new();
782 if (to_return == NULL) {
783 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_BN_EXPAND_FAIL);
799 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
800 DSA_SIG *sig, DSA *dsa)
809 if (!bn_wexpand(pv, dsa->p->top)) {
810 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY, UBSEC_R_BN_EXPAND_FAIL);
814 v_len = BN_num_bits(dsa->p);
816 d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dgst_len);
818 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
819 const DSA_METHOD *meth;
821 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY, UBSEC_R_UNIT_FAILURE);
822 meth = DSA_OpenSSL();
823 to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
827 if (p_UBSEC_dsa_verify_ioctl(fd, 0, /* compute hash before signing */
828 (unsigned char *)dgst, d_len,
829 (unsigned char *)dsa->p->d,
831 (unsigned char *)dsa->q->d,
833 (unsigned char *)dsa->g->d,
835 (unsigned char *)dsa->pub_key->d,
836 BN_num_bits(dsa->pub_key),
837 (unsigned char *)sig->r->d,
839 (unsigned char *)sig->s->d,
840 BN_num_bits(sig->s), (unsigned char *)v.d,
842 const DSA_METHOD *meth;
843 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY, UBSEC_R_REQUEST_FAILED);
844 p_UBSEC_ubsec_close(fd);
846 meth = DSA_OpenSSL();
847 to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
852 p_UBSEC_ubsec_close(fd);
861 # ifndef OPENSSL_NO_DH
862 static int ubsec_dh_compute_key(unsigned char *key, const BIGNUM *pub_key,
865 int ret = -1, k_len, fd;
867 k_len = BN_num_bits(dh->p);
869 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
870 const DH_METHOD *meth;
871 UBSECerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_UNIT_FAILURE);
873 ret = meth->compute_key(key, pub_key, dh);
877 if (p_UBSEC_diffie_hellman_agree_ioctl(fd,
878 (unsigned char *)dh->priv_key->d,
879 BN_num_bits(dh->priv_key),
880 (unsigned char *)pub_key->d,
881 BN_num_bits(pub_key),
882 (unsigned char *)dh->p->d,
883 BN_num_bits(dh->p), key,
885 /* Hardware's a no go, failover to software */
886 const DH_METHOD *meth;
887 UBSECerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_REQUEST_FAILED);
888 p_UBSEC_ubsec_close(fd);
891 ret = meth->compute_key(key, pub_key, dh);
896 p_UBSEC_ubsec_close(fd);
898 ret = p_UBSEC_ubsec_bits_to_bytes(k_len);
903 static int ubsec_dh_generate_key(DH *dh)
905 int ret = 0, random_bits = 0, pub_key_len = 0, priv_key_len = 0, fd;
906 BIGNUM *pub_key = NULL;
907 BIGNUM *priv_key = NULL;
910 * How many bits should Random x be? dh_key.c
911 * sets the range from 0 to num_bits(modulus) ???
914 if (dh->priv_key == NULL) {
916 if (priv_key == NULL)
918 priv_key_len = BN_num_bits(dh->p);
919 if (bn_wexpand(priv_key, dh->p->top) == NULL)
922 if (!BN_rand_range(priv_key, dh->p))
924 while (BN_is_zero(priv_key)) ;
925 random_bits = BN_num_bits(priv_key);
927 priv_key = dh->priv_key;
930 if (dh->pub_key == NULL) {
934 pub_key_len = BN_num_bits(dh->p);
935 if (bn_wexpand(pub_key, dh->p->top) == NULL)
938 pub_key = dh->pub_key;
941 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
942 const DH_METHOD *meth;
943 UBSECerr(UBSEC_F_UBSEC_DH_GENERATE_KEY, UBSEC_R_UNIT_FAILURE);
945 ret = meth->generate_key(dh);
949 if (p_UBSEC_diffie_hellman_generate_ioctl(fd,
950 (unsigned char *)priv_key->d,
952 (unsigned char *)pub_key->d,
954 (unsigned char *)dh->g->d,
956 (unsigned char *)dh->p->d,
957 BN_num_bits(dh->p), 0, 0,
959 /* Hardware's a no go, failover to software */
960 const DH_METHOD *meth;
962 UBSECerr(UBSEC_F_UBSEC_DH_GENERATE_KEY, UBSEC_R_REQUEST_FAILED);
963 p_UBSEC_ubsec_close(fd);
966 ret = meth->generate_key(dh);
971 p_UBSEC_ubsec_close(fd);
973 dh->pub_key = pub_key;
974 dh->pub_key->top = (pub_key_len + BN_BITS2 - 1) / BN_BITS2;
975 dh->priv_key = priv_key;
976 dh->priv_key->top = (priv_key_len + BN_BITS2 - 1) / BN_BITS2;
985 static int ubsec_rand_bytes(unsigned char *buf, int num)
989 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
990 const RAND_METHOD *meth;
991 UBSECerr(UBSEC_F_UBSEC_RAND_BYTES, UBSEC_R_UNIT_FAILURE);
992 num = p_UBSEC_ubsec_bits_to_bytes(num);
993 meth = RAND_SSLeay();
994 meth->seed(buf, num);
995 ret = meth->bytes(buf, num);
999 num *= 8; /* bytes to bits */
1001 if (p_UBSEC_rng_ioctl(fd, UBSEC_RNG_DIRECT, buf, &num) != 0) {
1002 /* Hardware's a no go, failover to software */
1003 const RAND_METHOD *meth;
1005 UBSECerr(UBSEC_F_UBSEC_RAND_BYTES, UBSEC_R_REQUEST_FAILED);
1006 p_UBSEC_ubsec_close(fd);
1008 num = p_UBSEC_ubsec_bits_to_bytes(num);
1009 meth = RAND_SSLeay();
1010 meth->seed(buf, num);
1011 ret = meth->bytes(buf, num);
1016 p_UBSEC_ubsec_close(fd);
1023 static int ubsec_rand_status(void)
1030 * This stuff is needed if this ENGINE is being compiled into a
1031 * self-contained shared-library.
1033 # ifndef OPENSSL_NO_DYNAMIC_ENGINE
1034 static int bind_fn(ENGINE *e, const char *id)
1036 if (id && (strcmp(id, engine_ubsec_id) != 0))
1038 if (!bind_helper(e))
1043 IMPLEMENT_DYNAMIC_CHECK_FN()
1044 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
1045 # endif /* OPENSSL_NO_DYNAMIC_ENGINE */
1046 # endif /* !OPENSSL_NO_HW_UBSEC */
1047 #endif /* !OPENSSL_NO_HW */