1 /* crypto/engine/hw_ubsec.c */
2 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
5 * Cloned shamelessly by Joe Tardo.
7 /* ====================================================================
8 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
22 * 3. All advertising materials mentioning features or use of this
23 * software must display the following acknowledgment:
24 * "This product includes software developed by the OpenSSL Project
25 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
27 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
28 * endorse or promote products derived from this software without
29 * prior written permission. For written permission, please contact
30 * licensing@OpenSSL.org.
32 * 5. Products derived from this software may not be called "OpenSSL"
33 * nor may "OpenSSL" appear in their names without prior written
34 * permission of the OpenSSL Project.
36 * 6. Redistributions of any form whatsoever must retain the following
38 * "This product includes software developed by the OpenSSL Project
39 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
41 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
42 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
44 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
47 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
48 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
50 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
51 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
52 * OF THE POSSIBILITY OF SUCH DAMAGE.
53 * ====================================================================
55 * This product includes cryptographic software written by Eric Young
56 * (eay@cryptsoft.com). This product includes software written by Tim
57 * Hudson (tjh@cryptsoft.com).
62 #include <openssl/crypto.h>
64 #include <openssl/dso.h>
65 #include <openssl/engine.h>
68 #ifndef OPENSSL_NO_HW_UBSEC
73 #include "vendor_defns/hw_ubsec.h"
76 #define UBSEC_LIB_NAME "ubsec engine"
77 #include "hw_ubsec_err.c"
79 #define FAIL_TO_SOFTWARE -15
81 static int ubsec_destroy(ENGINE *e);
82 static int ubsec_init(ENGINE *e);
83 static int ubsec_finish(ENGINE *e);
84 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
85 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
86 const BIGNUM *m, BN_CTX *ctx);
87 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
88 const BIGNUM *q, const BIGNUM *dp,
89 const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx);
90 #ifndef OPENSSL_NO_RSA
91 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
93 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
94 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
95 #ifndef OPENSSL_NO_DSA
97 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
98 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
99 BN_CTX *ctx, BN_MONT_CTX *in_mont);
100 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
101 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
104 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
105 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
106 DSA_SIG *sig, DSA *dsa);
108 #ifndef OPENSSL_NO_DH
109 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
110 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
112 static int ubsec_dh_compute_key(unsigned char *key,const BIGNUM *pub_key,DH *dh);
113 static int ubsec_dh_generate_key(DH *dh);
117 static int ubsec_rand_bytes(unsigned char *buf, int num);
118 static int ubsec_rand_status(void);
121 #define UBSEC_CMD_SO_PATH ENGINE_CMD_BASE
122 static const ENGINE_CMD_DEFN ubsec_cmd_defns[] = {
125 "Specifies the path to the 'ubsec' shared library",
126 ENGINE_CMD_FLAG_STRING},
130 #ifndef OPENSSL_NO_RSA
131 /* Our internal RSA_METHOD that we provide pointers to */
132 static RSA_METHOD ubsec_rsa =
150 #ifndef OPENSSL_NO_DSA
151 /* Our internal DSA_METHOD that we provide pointers to */
152 static DSA_METHOD ubsec_dsa =
155 ubsec_dsa_do_sign, /* dsa_do_sign */
156 NULL, /* dsa_sign_setup */
157 ubsec_dsa_verify, /* dsa_do_verify */
158 NULL, /* ubsec_dsa_mod_exp */ /* dsa_mod_exp */
159 NULL, /* ubsec_mod_exp_dsa */ /* bn_mod_exp */
167 #ifndef OPENSSL_NO_DH
168 /* Our internal DH_METHOD that we provide pointers to */
169 static DH_METHOD ubsec_dh =
172 ubsec_dh_generate_key,
173 ubsec_dh_compute_key,
182 /* Constants used when creating the ENGINE */
183 static const char *engine_ubsec_id = "ubsec";
184 static const char *engine_ubsec_name = "UBSEC hardware engine support";
186 /* This internal function is used by ENGINE_ubsec() and possibly by the
187 * "dynamic" ENGINE support too */
188 static int bind_helper(ENGINE *e)
190 #ifndef OPENSSL_NO_RSA
191 const RSA_METHOD *meth1;
193 #ifndef OPENSSL_NO_DH
194 #ifndef HAVE_UBSEC_DH
195 const DH_METHOD *meth3;
196 #endif /* HAVE_UBSEC_DH */
198 if(!ENGINE_set_id(e, engine_ubsec_id) ||
199 !ENGINE_set_name(e, engine_ubsec_name) ||
200 #ifndef OPENSSL_NO_RSA
201 !ENGINE_set_RSA(e, &ubsec_rsa) ||
203 #ifndef OPENSSL_NO_DSA
204 !ENGINE_set_DSA(e, &ubsec_dsa) ||
206 #ifndef OPENSSL_NO_DH
207 !ENGINE_set_DH(e, &ubsec_dh) ||
209 !ENGINE_set_destroy_function(e, ubsec_destroy) ||
210 !ENGINE_set_init_function(e, ubsec_init) ||
211 !ENGINE_set_finish_function(e, ubsec_finish) ||
212 !ENGINE_set_ctrl_function(e, ubsec_ctrl) ||
213 !ENGINE_set_cmd_defns(e, ubsec_cmd_defns))
216 #ifndef OPENSSL_NO_RSA
217 /* We know that the "PKCS1_SSLeay()" functions hook properly
218 * to the Broadcom-specific mod_exp and mod_exp_crt so we use
219 * those functions. NB: We don't use ENGINE_openssl() or
220 * anything "more generic" because something like the RSAref
221 * code may not hook properly, and if you own one of these
222 * cards then you have the right to do RSA operations on it
224 meth1 = RSA_PKCS1_SSLeay();
225 ubsec_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
226 ubsec_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
227 ubsec_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
228 ubsec_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
231 #ifndef OPENSSL_NO_DH
232 #ifndef HAVE_UBSEC_DH
233 /* Much the same for Diffie-Hellman */
234 meth3 = DH_OpenSSL();
235 ubsec_dh.generate_key = meth3->generate_key;
236 ubsec_dh.compute_key = meth3->compute_key;
237 #endif /* HAVE_UBSEC_DH */
240 /* Ensure the ubsec error handling is set up */
241 ERR_load_UBSEC_strings();
245 static ENGINE *engine_ubsec(void)
247 ENGINE *ret = ENGINE_new();
250 if(!bind_helper(ret))
258 void ENGINE_load_ubsec(void)
260 /* Copied from eng_[openssl|dyn].c */
261 ENGINE *toadd = engine_ubsec();
268 /* This is a process-global DSO handle used for loading and unloading
269 * the UBSEC library. NB: This is only set (or unset) during an
270 * init() or finish() call (reference counts permitting) and they're
271 * operating with global locks, so this should be thread-safe
274 static DSO *ubsec_dso = NULL;
276 /* These are the function pointers that are (un)set when the library has
277 * successfully (un)loaded. */
279 static t_UBSEC_ubsec_bytes_to_bits *p_UBSEC_ubsec_bytes_to_bits = NULL;
280 static t_UBSEC_ubsec_bits_to_bytes *p_UBSEC_ubsec_bits_to_bytes = NULL;
281 static t_UBSEC_ubsec_open *p_UBSEC_ubsec_open = NULL;
282 static t_UBSEC_ubsec_close *p_UBSEC_ubsec_close = NULL;
283 #ifndef OPENSSL_NO_DH
284 static t_UBSEC_diffie_hellman_generate_ioctl
285 *p_UBSEC_diffie_hellman_generate_ioctl = NULL;
286 static t_UBSEC_diffie_hellman_agree_ioctl *p_UBSEC_diffie_hellman_agree_ioctl = NULL;
288 /* #ifndef OPENSSL_NO_RSA */
289 static t_UBSEC_rsa_mod_exp_ioctl *p_UBSEC_rsa_mod_exp_ioctl = NULL;
290 static t_UBSEC_rsa_mod_exp_crt_ioctl *p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
292 #ifndef OPENSSL_NO_DSA
293 static t_UBSEC_dsa_sign_ioctl *p_UBSEC_dsa_sign_ioctl = NULL;
294 static t_UBSEC_dsa_verify_ioctl *p_UBSEC_dsa_verify_ioctl = NULL;
296 static t_UBSEC_math_accelerate_ioctl *p_UBSEC_math_accelerate_ioctl = NULL;
297 static t_UBSEC_rng_ioctl *p_UBSEC_rng_ioctl = NULL;
298 static t_UBSEC_max_key_len_ioctl *p_UBSEC_max_key_len_ioctl = NULL;
300 static int max_key_len = 1024; /* ??? */
303 * These are the static string constants for the DSO file name and the function
304 * symbol names to bind to.
307 static const char *UBSEC_LIBNAME = NULL;
308 static const char *get_UBSEC_LIBNAME(void)
311 return UBSEC_LIBNAME;
314 static void free_UBSEC_LIBNAME(void)
317 OPENSSL_free((void*)UBSEC_LIBNAME);
318 UBSEC_LIBNAME = NULL;
320 static long set_UBSEC_LIBNAME(const char *name)
322 free_UBSEC_LIBNAME();
323 return (((UBSEC_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
325 static const char *UBSEC_F1 = "ubsec_bytes_to_bits";
326 static const char *UBSEC_F2 = "ubsec_bits_to_bytes";
327 static const char *UBSEC_F3 = "ubsec_open";
328 static const char *UBSEC_F4 = "ubsec_close";
329 #ifndef OPENSSL_NO_DH
330 static const char *UBSEC_F5 = "diffie_hellman_generate_ioctl";
331 static const char *UBSEC_F6 = "diffie_hellman_agree_ioctl";
333 /* #ifndef OPENSSL_NO_RSA */
334 static const char *UBSEC_F7 = "rsa_mod_exp_ioctl";
335 static const char *UBSEC_F8 = "rsa_mod_exp_crt_ioctl";
337 #ifndef OPENSSL_NO_DSA
338 static const char *UBSEC_F9 = "dsa_sign_ioctl";
339 static const char *UBSEC_F10 = "dsa_verify_ioctl";
341 static const char *UBSEC_F11 = "math_accelerate_ioctl";
342 static const char *UBSEC_F12 = "rng_ioctl";
343 static const char *UBSEC_F13 = "ubsec_max_key_len_ioctl";
345 /* Destructor (complements the "ENGINE_ubsec()" constructor) */
346 static int ubsec_destroy(ENGINE *e)
348 free_UBSEC_LIBNAME();
349 ERR_unload_UBSEC_strings();
353 /* (de)initialisation functions. */
354 static int ubsec_init(ENGINE *e)
356 t_UBSEC_ubsec_bytes_to_bits *p1;
357 t_UBSEC_ubsec_bits_to_bytes *p2;
358 t_UBSEC_ubsec_open *p3;
359 t_UBSEC_ubsec_close *p4;
360 #ifndef OPENSSL_NO_DH
361 t_UBSEC_diffie_hellman_generate_ioctl *p5;
362 t_UBSEC_diffie_hellman_agree_ioctl *p6;
364 /* #ifndef OPENSSL_NO_RSA */
365 t_UBSEC_rsa_mod_exp_ioctl *p7;
366 t_UBSEC_rsa_mod_exp_crt_ioctl *p8;
368 #ifndef OPENSSL_NO_DSA
369 t_UBSEC_dsa_sign_ioctl *p9;
370 t_UBSEC_dsa_verify_ioctl *p10;
372 t_UBSEC_math_accelerate_ioctl *p11;
373 t_UBSEC_rng_ioctl *p12;
374 t_UBSEC_max_key_len_ioctl *p13;
377 if(ubsec_dso != NULL)
379 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_ALREADY_LOADED);
383 * Attempt to load libubsec.so/ubsec.dll/whatever.
385 ubsec_dso = DSO_load(NULL, get_UBSEC_LIBNAME(), NULL, 0);
386 if(ubsec_dso == NULL)
388 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
393 !(p1 = (t_UBSEC_ubsec_bytes_to_bits *) DSO_bind_func(ubsec_dso, UBSEC_F1)) ||
394 !(p2 = (t_UBSEC_ubsec_bits_to_bytes *) DSO_bind_func(ubsec_dso, UBSEC_F2)) ||
395 !(p3 = (t_UBSEC_ubsec_open *) DSO_bind_func(ubsec_dso, UBSEC_F3)) ||
396 !(p4 = (t_UBSEC_ubsec_close *) DSO_bind_func(ubsec_dso, UBSEC_F4)) ||
397 #ifndef OPENSSL_NO_DH
398 !(p5 = (t_UBSEC_diffie_hellman_generate_ioctl *)
399 DSO_bind_func(ubsec_dso, UBSEC_F5)) ||
400 !(p6 = (t_UBSEC_diffie_hellman_agree_ioctl *)
401 DSO_bind_func(ubsec_dso, UBSEC_F6)) ||
403 /* #ifndef OPENSSL_NO_RSA */
404 !(p7 = (t_UBSEC_rsa_mod_exp_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F7)) ||
405 !(p8 = (t_UBSEC_rsa_mod_exp_crt_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F8)) ||
407 #ifndef OPENSSL_NO_DSA
408 !(p9 = (t_UBSEC_dsa_sign_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F9)) ||
409 !(p10 = (t_UBSEC_dsa_verify_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F10)) ||
411 !(p11 = (t_UBSEC_math_accelerate_ioctl *)
412 DSO_bind_func(ubsec_dso, UBSEC_F11)) ||
413 !(p12 = (t_UBSEC_rng_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F12)) ||
414 !(p13 = (t_UBSEC_max_key_len_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F13)))
416 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
420 /* Copy the pointers */
421 p_UBSEC_ubsec_bytes_to_bits = p1;
422 p_UBSEC_ubsec_bits_to_bytes = p2;
423 p_UBSEC_ubsec_open = p3;
424 p_UBSEC_ubsec_close = p4;
425 #ifndef OPENSSL_NO_DH
426 p_UBSEC_diffie_hellman_generate_ioctl = p5;
427 p_UBSEC_diffie_hellman_agree_ioctl = p6;
429 #ifndef OPENSSL_NO_RSA
430 p_UBSEC_rsa_mod_exp_ioctl = p7;
431 p_UBSEC_rsa_mod_exp_crt_ioctl = p8;
433 #ifndef OPENSSL_NO_DSA
434 p_UBSEC_dsa_sign_ioctl = p9;
435 p_UBSEC_dsa_verify_ioctl = p10;
437 p_UBSEC_math_accelerate_ioctl = p11;
438 p_UBSEC_rng_ioctl = p12;
439 p_UBSEC_max_key_len_ioctl = p13;
441 /* Perform an open to see if there's actually any unit running. */
442 if (((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) > 0) && (p_UBSEC_max_key_len_ioctl(fd, &max_key_len) == 0))
444 p_UBSEC_ubsec_close(fd);
449 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
455 p_UBSEC_ubsec_bytes_to_bits = NULL;
456 p_UBSEC_ubsec_bits_to_bytes = NULL;
457 p_UBSEC_ubsec_open = NULL;
458 p_UBSEC_ubsec_close = NULL;
459 #ifndef OPENSSL_NO_DH
460 p_UBSEC_diffie_hellman_generate_ioctl = NULL;
461 p_UBSEC_diffie_hellman_agree_ioctl = NULL;
463 #ifndef OPENSSL_NO_RSA
464 p_UBSEC_rsa_mod_exp_ioctl = NULL;
465 p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
467 #ifndef OPENSSL_NO_DSA
468 p_UBSEC_dsa_sign_ioctl = NULL;
469 p_UBSEC_dsa_verify_ioctl = NULL;
471 p_UBSEC_math_accelerate_ioctl = NULL;
472 p_UBSEC_rng_ioctl = NULL;
473 p_UBSEC_max_key_len_ioctl = NULL;
478 static int ubsec_finish(ENGINE *e)
480 free_UBSEC_LIBNAME();
481 if(ubsec_dso == NULL)
483 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_NOT_LOADED);
486 if(!DSO_free(ubsec_dso))
488 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_DSO_FAILURE);
492 p_UBSEC_ubsec_bytes_to_bits = NULL;
493 p_UBSEC_ubsec_bits_to_bytes = NULL;
494 p_UBSEC_ubsec_open = NULL;
495 p_UBSEC_ubsec_close = NULL;
496 #ifndef OPENSSL_NO_DH
497 p_UBSEC_diffie_hellman_generate_ioctl = NULL;
498 p_UBSEC_diffie_hellman_agree_ioctl = NULL;
500 #ifndef OPENSSL_NO_RSA
501 p_UBSEC_rsa_mod_exp_ioctl = NULL;
502 p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
504 #ifndef OPENSSL_NO_DSA
505 p_UBSEC_dsa_sign_ioctl = NULL;
506 p_UBSEC_dsa_verify_ioctl = NULL;
508 p_UBSEC_math_accelerate_ioctl = NULL;
509 p_UBSEC_rng_ioctl = NULL;
510 p_UBSEC_max_key_len_ioctl = NULL;
514 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
516 int initialised = ((ubsec_dso == NULL) ? 0 : 1);
519 case UBSEC_CMD_SO_PATH:
522 UBSECerr(UBSEC_F_UBSEC_CTRL,ERR_R_PASSED_NULL_PARAMETER);
527 UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_ALREADY_LOADED);
530 return set_UBSEC_LIBNAME((const char *)p);
534 UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED);
538 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
539 const BIGNUM *m, BN_CTX *ctx)
544 if(ubsec_dso == NULL)
546 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_NOT_LOADED);
550 /* Check if hardware can't handle this argument. */
551 y_len = BN_num_bits(m);
552 if (y_len > max_key_len) {
553 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
554 return BN_mod_exp(r, a, p, m, ctx);
557 if(!bn_wexpand(r, m->top))
559 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL);
562 memset(r->d, 0, BN_num_bytes(m));
564 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
566 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
567 return BN_mod_exp(r, a, p, m, ctx);
570 if (p_UBSEC_rsa_mod_exp_ioctl(fd, (unsigned char *)a->d, BN_num_bits(a),
571 (unsigned char *)m->d, BN_num_bits(m), (unsigned char *)p->d,
572 BN_num_bits(p), (unsigned char *)r->d, &y_len) != 0)
574 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
575 p_UBSEC_ubsec_close(fd);
577 return BN_mod_exp(r, a, p, m, ctx);
580 p_UBSEC_ubsec_close(fd);
582 r->top = (BN_num_bits(m)+BN_BITS2-1)/BN_BITS2;
586 #ifndef OPENSSL_NO_RSA
587 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
592 if((ctx = BN_CTX_new()) == NULL)
595 if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
597 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP, UBSEC_R_MISSING_KEY_COMPONENTS);
601 to_return = ubsec_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
602 rsa->dmq1, rsa->iqmp, ctx);
603 if (to_return == FAIL_TO_SOFTWARE)
606 * Do in software as hardware failed.
608 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
609 to_return = (*meth->rsa_mod_exp)(r0, I, rsa);
618 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
619 const BIGNUM *q, const BIGNUM *dp,
620 const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx)
626 m_len = BN_num_bytes(p) + BN_num_bytes(q) + 1;
627 y_len = BN_num_bits(p) + BN_num_bits(q);
629 /* Check if hardware can't handle this argument. */
630 if (y_len > max_key_len) {
631 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
632 return FAIL_TO_SOFTWARE;
635 if (!bn_wexpand(r, p->top + q->top + 1)) {
636 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP_CRT, UBSEC_R_BN_EXPAND_FAIL);
640 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
642 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
643 return FAIL_TO_SOFTWARE;
646 if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd,
647 (unsigned char *)a->d, BN_num_bits(a),
648 (unsigned char *)qinv->d, BN_num_bits(qinv),
649 (unsigned char *)dp->d, BN_num_bits(dp),
650 (unsigned char *)p->d, BN_num_bits(p),
651 (unsigned char *)dq->d, BN_num_bits(dq),
652 (unsigned char *)q->d, BN_num_bits(q),
653 (unsigned char *)r->d, &y_len) != 0) {
654 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
655 p_UBSEC_ubsec_close(fd);
656 return FAIL_TO_SOFTWARE;
659 p_UBSEC_ubsec_close(fd);
661 r->top = (BN_num_bits(p) + BN_num_bits(q) + BN_BITS2 - 1)/BN_BITS2;
665 #ifndef OPENSSL_NO_DSA
667 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
668 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
669 BN_CTX *ctx, BN_MONT_CTX *in_mont)
675 /* let rr = a1 ^ p1 mod m */
676 if (!ubsec_mod_exp(rr,a1,p1,m,ctx)) goto end;
677 /* let t = a2 ^ p2 mod m */
678 if (!ubsec_mod_exp(&t,a2,p2,m,ctx)) goto end;
679 /* let rr = rr * t mod m */
680 if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
687 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
688 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
691 return ubsec_mod_exp(r, a, p, m, ctx);
697 * This function is aliased to mod_exp (with the mont stuff dropped).
699 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
700 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
704 #ifndef OPENSSL_NO_RSA
705 /* Do in software if the key is too large for the hardware. */
706 if (BN_num_bits(m) > max_key_len)
708 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
709 ret = (*meth->bn_mod_exp)(r, a, p, m, ctx, m_ctx);
714 ret = ubsec_mod_exp(r, a, p, m, ctx);
720 #ifndef OPENSSL_NO_DH
721 /* This function is aliased to mod_exp (with the dh and mont dropped). */
722 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
723 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
726 return ubsec_mod_exp(r, a, p, m, ctx);
730 #ifndef OPENSSL_NO_DSA
731 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
733 DSA_SIG *to_return = NULL;
734 int s_len = 160, r_len = 160, d_len, fd;
735 BIGNUM m, *r=NULL, *s=NULL;
741 if ((s == NULL) || (r==NULL))
744 d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dlen);
746 if(!bn_wexpand(r, (160+BN_BITS2-1)/BN_BITS2) ||
747 (!bn_wexpand(s, (160+BN_BITS2-1)/BN_BITS2))) {
748 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
752 if (BN_bin2bn(dgst,dlen,&m) == NULL) {
753 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
757 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
758 const DSA_METHOD *meth;
760 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
761 meth = DSA_OpenSSL();
762 to_return = meth->dsa_do_sign(dgst, dlen, dsa);
766 if (p_UBSEC_dsa_sign_ioctl(fd, 0, /* compute hash before signing */
767 (unsigned char *)dgst, d_len,
768 NULL, 0, /* compute random value */
769 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
770 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
771 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
772 (unsigned char *)dsa->priv_key->d, BN_num_bits(dsa->priv_key),
773 (unsigned char *)r->d, &r_len,
774 (unsigned char *)s->d, &s_len ) != 0) {
775 const DSA_METHOD *meth;
777 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_REQUEST_FAILED);
778 p_UBSEC_ubsec_close(fd);
779 meth = DSA_OpenSSL();
780 to_return = meth->dsa_do_sign(dgst, dlen, dsa);
785 p_UBSEC_ubsec_close(fd);
787 r->top = (160+BN_BITS2-1)/BN_BITS2;
788 s->top = (160+BN_BITS2-1)/BN_BITS2;
790 to_return = DSA_SIG_new();
791 if(to_return == NULL) {
792 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
808 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
809 DSA_SIG *sig, DSA *dsa)
818 if(!bn_wexpand(&v, dsa->p->top)) {
819 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY ,UBSEC_R_BN_EXPAND_FAIL);
823 v_len = BN_num_bits(dsa->p);
825 d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dgst_len);
827 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
828 const DSA_METHOD *meth;
830 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
831 meth = DSA_OpenSSL();
832 to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
836 if (p_UBSEC_dsa_verify_ioctl(fd, 0, /* compute hash before signing */
837 (unsigned char *)dgst, d_len,
838 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
839 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
840 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
841 (unsigned char *)dsa->pub_key->d, BN_num_bits(dsa->pub_key),
842 (unsigned char *)sig->r->d, BN_num_bits(sig->r),
843 (unsigned char *)sig->s->d, BN_num_bits(sig->s),
844 (unsigned char *)v.d, &v_len) != 0) {
845 const DSA_METHOD *meth;
846 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY , UBSEC_R_REQUEST_FAILED);
847 p_UBSEC_ubsec_close(fd);
849 meth = DSA_OpenSSL();
850 to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
855 p_UBSEC_ubsec_close(fd);
864 #ifndef OPENSSL_NO_DH
865 static int ubsec_dh_compute_key (unsigned char *key,const BIGNUM *pub_key,DH *dh)
871 k_len = BN_num_bits(dh->p);
873 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
875 const DH_METHOD *meth;
876 ENGINEerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
878 ret = meth->compute_key(key, pub_key, dh);
882 if (p_UBSEC_diffie_hellman_agree_ioctl(fd,
883 (unsigned char *)dh->priv_key->d, BN_num_bits(dh->priv_key),
884 (unsigned char *)pub_key->d, BN_num_bits(pub_key),
885 (unsigned char *)dh->p->d, BN_num_bits(dh->p),
888 /* Hardware's a no go, failover to software */
889 const DH_METHOD *meth;
890 ENGINEerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_REQUEST_FAILED);
891 p_UBSEC_ubsec_close(fd);
894 ret = meth->compute_key(key, pub_key, dh);
899 p_UBSEC_ubsec_close(fd);
901 ret = p_UBSEC_ubsec_bits_to_bytes(k_len);
906 static int ubsec_dh_generate_key (DH *dh)
913 BIGNUM *pub_key = NULL;
914 BIGNUM *priv_key = NULL;
917 * How many bits should Random x be? dh_key.c
918 * sets the range from 0 to num_bits(modulus) ???
921 if (dh->priv_key == NULL)
924 if (priv_key == NULL) goto err;
925 priv_key_len = BN_num_bits(dh->p);
926 bn_wexpand(priv_key, dh->p->top);
928 if (!BN_rand_range(priv_key, dh->p)) goto err;
929 while (BN_is_zero(priv_key));
930 random_bits = BN_num_bits(priv_key);
934 priv_key = dh->priv_key;
937 if (dh->pub_key == NULL)
940 pub_key_len = BN_num_bits(dh->p);
941 bn_wexpand(pub_key, dh->p->top);
942 if(pub_key == NULL) goto err;
946 pub_key = dh->pub_key;
949 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
951 const DH_METHOD *meth;
952 ENGINEerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
954 ret = meth->generate_key(dh);
958 if (p_UBSEC_diffie_hellman_generate_ioctl(fd,
959 (unsigned char *)priv_key->d, &priv_key_len,
960 (unsigned char *)pub_key->d, &pub_key_len,
961 (unsigned char *)dh->g->d, BN_num_bits(dh->g),
962 (unsigned char *)dh->p->d, BN_num_bits(dh->p),
963 0, 0, random_bits) != 0)
965 /* Hardware's a no go, failover to software */
966 const DH_METHOD *meth;
968 ENGINEerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_REQUEST_FAILED);
969 p_UBSEC_ubsec_close(fd);
972 ret = meth->generate_key(dh);
977 p_UBSEC_ubsec_close(fd);
979 dh->pub_key = pub_key;
980 dh->pub_key->top = (pub_key_len + BN_BITS2-1) / BN_BITS2;
981 dh->priv_key = priv_key;
982 dh->priv_key->top = (priv_key_len + BN_BITS2-1) / BN_BITS2;
991 static int ubsec_rand_bytes(unsigned char * buf,
997 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
999 const RAND_METHOD *meth;
1000 ENGINEerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
1001 num = p_UBSEC_ubsec_bits_to_bytes(num);
1002 meth = RAND_SSLeay();
1003 meth->seed(buf, num);
1004 ret = meth->bytes(buf, num);
1008 num *= 8; /* bytes to bits */
1010 if (p_UBSEC_rng_ioctl(fd,
1015 /* Hardware's a no go, failover to software */
1016 const RAND_METHOD *meth;
1018 ENGINEerr(UBSEC_F_UBSEC_RNG_BYTES, UBSEC_R_REQUEST_FAILED);
1019 p_UBSEC_ubsec_close(fd);
1021 num = p_UBSEC_ubsec_bits_to_bytes(num);
1022 meth = RAND_SSLeay();
1023 meth->seed(buf, num);
1024 ret = meth->bytes(buf, num);
1029 p_UBSEC_ubsec_close(fd);
1037 static int ubsec_rand_status(void)
1043 /* This stuff is needed if this ENGINE is being compiled into a self-contained
1044 * shared-library. */
1045 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
1046 static int bind_fn(ENGINE *e, const char *id)
1048 if(id && (strcmp(id, engine_ubsec_id) != 0))
1054 IMPLEMENT_DYNAMIC_CHECK_FN()
1055 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
1056 #endif /* OPENSSL_NO_DYNAMIC_ENGINE */
1058 #endif /* !OPENSSL_NO_HW_UBSEC */
1059 #endif /* !OPENSSL_NO_HW */