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).
63 #include <openssl/crypto.h>
64 #include <openssl/buffer.h>
65 #include <openssl/dso.h>
66 #include <openssl/engine.h>
67 #include <openssl/rsa.h>
68 #include <openssl/dsa.h>
69 #include <openssl/dh.h>
70 #include <openssl/bn.h>
73 #ifndef OPENSSL_NO_HW_UBSEC
78 #include "vendor_defns/hw_ubsec.h"
81 #define UBSEC_LIB_NAME "ubsec engine"
82 #include "e_ubsec_err.c"
84 #define FAIL_TO_SOFTWARE -15
86 static int ubsec_destroy(ENGINE *e);
87 static int ubsec_init(ENGINE *e);
88 static int ubsec_finish(ENGINE *e);
89 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void));
90 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
91 const BIGNUM *m, BN_CTX *ctx);
92 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
93 const BIGNUM *q, const BIGNUM *dp,
94 const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx);
95 #ifndef OPENSSL_NO_RSA
96 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
98 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
99 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
100 #ifndef OPENSSL_NO_DSA
102 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
103 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
104 BN_CTX *ctx, BN_MONT_CTX *in_mont);
105 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
106 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
109 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
110 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
111 DSA_SIG *sig, DSA *dsa);
113 #ifndef OPENSSL_NO_DH
114 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
115 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
117 static int ubsec_dh_compute_key(unsigned char *key,const BIGNUM *pub_key,DH *dh);
118 static int ubsec_dh_generate_key(DH *dh);
122 static int ubsec_rand_bytes(unsigned char *buf, int num);
123 static int ubsec_rand_status(void);
126 #define UBSEC_CMD_SO_PATH ENGINE_CMD_BASE
127 static const ENGINE_CMD_DEFN ubsec_cmd_defns[] = {
130 "Specifies the path to the 'ubsec' shared library",
131 ENGINE_CMD_FLAG_STRING},
135 #ifndef OPENSSL_NO_RSA
136 /* Our internal RSA_METHOD that we provide pointers to */
137 static RSA_METHOD ubsec_rsa =
156 #ifndef OPENSSL_NO_DSA
157 /* Our internal DSA_METHOD that we provide pointers to */
158 static DSA_METHOD ubsec_dsa =
161 ubsec_dsa_do_sign, /* dsa_do_sign */
162 NULL, /* dsa_sign_setup */
163 ubsec_dsa_verify, /* dsa_do_verify */
164 NULL, /* ubsec_dsa_mod_exp */ /* dsa_mod_exp */
165 NULL, /* ubsec_mod_exp_dsa */ /* bn_mod_exp */
170 NULL, /* dsa_paramgen */
171 NULL /* dsa_keygen */
175 #ifndef OPENSSL_NO_DH
176 /* Our internal DH_METHOD that we provide pointers to */
177 static DH_METHOD ubsec_dh =
180 ubsec_dh_generate_key,
181 ubsec_dh_compute_key,
191 /* Constants used when creating the ENGINE */
192 static const char *engine_ubsec_id = "ubsec";
193 static const char *engine_ubsec_name = "UBSEC hardware engine support";
195 /* This internal function is used by ENGINE_ubsec() and possibly by the
196 * "dynamic" ENGINE support too */
197 static int bind_helper(ENGINE *e)
199 #ifndef OPENSSL_NO_RSA
200 const RSA_METHOD *meth1;
202 #ifndef OPENSSL_NO_DH
203 #ifndef HAVE_UBSEC_DH
204 const DH_METHOD *meth3;
205 #endif /* HAVE_UBSEC_DH */
207 if(!ENGINE_set_id(e, engine_ubsec_id) ||
208 !ENGINE_set_name(e, engine_ubsec_name) ||
209 #ifndef OPENSSL_NO_RSA
210 !ENGINE_set_RSA(e, &ubsec_rsa) ||
212 #ifndef OPENSSL_NO_DSA
213 !ENGINE_set_DSA(e, &ubsec_dsa) ||
215 #ifndef OPENSSL_NO_DH
216 !ENGINE_set_DH(e, &ubsec_dh) ||
218 !ENGINE_set_destroy_function(e, ubsec_destroy) ||
219 !ENGINE_set_init_function(e, ubsec_init) ||
220 !ENGINE_set_finish_function(e, ubsec_finish) ||
221 !ENGINE_set_ctrl_function(e, ubsec_ctrl) ||
222 !ENGINE_set_cmd_defns(e, ubsec_cmd_defns))
225 #ifndef OPENSSL_NO_RSA
226 /* We know that the "PKCS1_SSLeay()" functions hook properly
227 * to the Broadcom-specific mod_exp and mod_exp_crt so we use
228 * those functions. NB: We don't use ENGINE_openssl() or
229 * anything "more generic" because something like the RSAref
230 * code may not hook properly, and if you own one of these
231 * cards then you have the right to do RSA operations on it
233 meth1 = RSA_PKCS1_SSLeay();
234 ubsec_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
235 ubsec_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
236 ubsec_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
237 ubsec_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
240 #ifndef OPENSSL_NO_DH
241 #ifndef HAVE_UBSEC_DH
242 /* Much the same for Diffie-Hellman */
243 meth3 = DH_OpenSSL();
244 ubsec_dh.generate_key = meth3->generate_key;
245 ubsec_dh.compute_key = meth3->compute_key;
246 #endif /* HAVE_UBSEC_DH */
249 /* Ensure the ubsec error handling is set up */
250 ERR_load_UBSEC_strings();
254 #ifdef OPENSSL_NO_DYNAMIC_ENGINE
255 static ENGINE *engine_ubsec(void)
257 ENGINE *ret = ENGINE_new();
260 if(!bind_helper(ret))
268 void ENGINE_load_ubsec(void)
270 /* Copied from eng_[openssl|dyn].c */
271 ENGINE *toadd = engine_ubsec();
279 /* This is a process-global DSO handle used for loading and unloading
280 * the UBSEC library. NB: This is only set (or unset) during an
281 * init() or finish() call (reference counts permitting) and they're
282 * operating with global locks, so this should be thread-safe
285 static DSO *ubsec_dso = NULL;
287 /* These are the function pointers that are (un)set when the library has
288 * successfully (un)loaded. */
290 static t_UBSEC_ubsec_bytes_to_bits *p_UBSEC_ubsec_bytes_to_bits = NULL;
291 static t_UBSEC_ubsec_bits_to_bytes *p_UBSEC_ubsec_bits_to_bytes = NULL;
292 static t_UBSEC_ubsec_open *p_UBSEC_ubsec_open = NULL;
293 static t_UBSEC_ubsec_close *p_UBSEC_ubsec_close = NULL;
294 #ifndef OPENSSL_NO_DH
295 static t_UBSEC_diffie_hellman_generate_ioctl
296 *p_UBSEC_diffie_hellman_generate_ioctl = NULL;
297 static t_UBSEC_diffie_hellman_agree_ioctl *p_UBSEC_diffie_hellman_agree_ioctl = NULL;
299 /* #ifndef OPENSSL_NO_RSA */
300 static t_UBSEC_rsa_mod_exp_ioctl *p_UBSEC_rsa_mod_exp_ioctl = NULL;
301 static t_UBSEC_rsa_mod_exp_crt_ioctl *p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
303 #ifndef OPENSSL_NO_DSA
304 static t_UBSEC_dsa_sign_ioctl *p_UBSEC_dsa_sign_ioctl = NULL;
305 static t_UBSEC_dsa_verify_ioctl *p_UBSEC_dsa_verify_ioctl = NULL;
307 static t_UBSEC_math_accelerate_ioctl *p_UBSEC_math_accelerate_ioctl = NULL;
308 static t_UBSEC_rng_ioctl *p_UBSEC_rng_ioctl = NULL;
309 static t_UBSEC_max_key_len_ioctl *p_UBSEC_max_key_len_ioctl = NULL;
311 static int max_key_len = 1024; /* ??? */
314 * These are the static string constants for the DSO file name and the function
315 * symbol names to bind to.
318 static const char *UBSEC_LIBNAME = NULL;
319 static const char *get_UBSEC_LIBNAME(void)
322 return UBSEC_LIBNAME;
325 static void free_UBSEC_LIBNAME(void)
328 OPENSSL_free((void*)UBSEC_LIBNAME);
329 UBSEC_LIBNAME = NULL;
331 static long set_UBSEC_LIBNAME(const char *name)
333 free_UBSEC_LIBNAME();
334 return (((UBSEC_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
336 static const char *UBSEC_F1 = "ubsec_bytes_to_bits";
337 static const char *UBSEC_F2 = "ubsec_bits_to_bytes";
338 static const char *UBSEC_F3 = "ubsec_open";
339 static const char *UBSEC_F4 = "ubsec_close";
340 #ifndef OPENSSL_NO_DH
341 static const char *UBSEC_F5 = "diffie_hellman_generate_ioctl";
342 static const char *UBSEC_F6 = "diffie_hellman_agree_ioctl";
344 /* #ifndef OPENSSL_NO_RSA */
345 static const char *UBSEC_F7 = "rsa_mod_exp_ioctl";
346 static const char *UBSEC_F8 = "rsa_mod_exp_crt_ioctl";
348 #ifndef OPENSSL_NO_DSA
349 static const char *UBSEC_F9 = "dsa_sign_ioctl";
350 static const char *UBSEC_F10 = "dsa_verify_ioctl";
352 static const char *UBSEC_F11 = "math_accelerate_ioctl";
353 static const char *UBSEC_F12 = "rng_ioctl";
354 static const char *UBSEC_F13 = "ubsec_max_key_len_ioctl";
356 /* Destructor (complements the "ENGINE_ubsec()" constructor) */
357 static int ubsec_destroy(ENGINE *e)
359 free_UBSEC_LIBNAME();
360 ERR_unload_UBSEC_strings();
364 /* (de)initialisation functions. */
365 static int ubsec_init(ENGINE *e)
367 t_UBSEC_ubsec_bytes_to_bits *p1;
368 t_UBSEC_ubsec_bits_to_bytes *p2;
369 t_UBSEC_ubsec_open *p3;
370 t_UBSEC_ubsec_close *p4;
371 #ifndef OPENSSL_NO_DH
372 t_UBSEC_diffie_hellman_generate_ioctl *p5;
373 t_UBSEC_diffie_hellman_agree_ioctl *p6;
375 /* #ifndef OPENSSL_NO_RSA */
376 t_UBSEC_rsa_mod_exp_ioctl *p7;
377 t_UBSEC_rsa_mod_exp_crt_ioctl *p8;
379 #ifndef OPENSSL_NO_DSA
380 t_UBSEC_dsa_sign_ioctl *p9;
381 t_UBSEC_dsa_verify_ioctl *p10;
383 t_UBSEC_math_accelerate_ioctl *p11;
384 t_UBSEC_rng_ioctl *p12;
385 t_UBSEC_max_key_len_ioctl *p13;
388 if(ubsec_dso != NULL)
390 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_ALREADY_LOADED);
394 * Attempt to load libubsec.so/ubsec.dll/whatever.
396 ubsec_dso = DSO_load(NULL, get_UBSEC_LIBNAME(), NULL, 0);
397 if(ubsec_dso == NULL)
399 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
404 !(p1 = (t_UBSEC_ubsec_bytes_to_bits *) DSO_bind_func(ubsec_dso, UBSEC_F1)) ||
405 !(p2 = (t_UBSEC_ubsec_bits_to_bytes *) DSO_bind_func(ubsec_dso, UBSEC_F2)) ||
406 !(p3 = (t_UBSEC_ubsec_open *) DSO_bind_func(ubsec_dso, UBSEC_F3)) ||
407 !(p4 = (t_UBSEC_ubsec_close *) DSO_bind_func(ubsec_dso, UBSEC_F4)) ||
408 #ifndef OPENSSL_NO_DH
409 !(p5 = (t_UBSEC_diffie_hellman_generate_ioctl *)
410 DSO_bind_func(ubsec_dso, UBSEC_F5)) ||
411 !(p6 = (t_UBSEC_diffie_hellman_agree_ioctl *)
412 DSO_bind_func(ubsec_dso, UBSEC_F6)) ||
414 /* #ifndef OPENSSL_NO_RSA */
415 !(p7 = (t_UBSEC_rsa_mod_exp_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F7)) ||
416 !(p8 = (t_UBSEC_rsa_mod_exp_crt_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F8)) ||
418 #ifndef OPENSSL_NO_DSA
419 !(p9 = (t_UBSEC_dsa_sign_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F9)) ||
420 !(p10 = (t_UBSEC_dsa_verify_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F10)) ||
422 !(p11 = (t_UBSEC_math_accelerate_ioctl *)
423 DSO_bind_func(ubsec_dso, UBSEC_F11)) ||
424 !(p12 = (t_UBSEC_rng_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F12)) ||
425 !(p13 = (t_UBSEC_max_key_len_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F13)))
427 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
431 /* Copy the pointers */
432 p_UBSEC_ubsec_bytes_to_bits = p1;
433 p_UBSEC_ubsec_bits_to_bytes = p2;
434 p_UBSEC_ubsec_open = p3;
435 p_UBSEC_ubsec_close = p4;
436 #ifndef OPENSSL_NO_DH
437 p_UBSEC_diffie_hellman_generate_ioctl = p5;
438 p_UBSEC_diffie_hellman_agree_ioctl = p6;
440 #ifndef OPENSSL_NO_RSA
441 p_UBSEC_rsa_mod_exp_ioctl = p7;
442 p_UBSEC_rsa_mod_exp_crt_ioctl = p8;
444 #ifndef OPENSSL_NO_DSA
445 p_UBSEC_dsa_sign_ioctl = p9;
446 p_UBSEC_dsa_verify_ioctl = p10;
448 p_UBSEC_math_accelerate_ioctl = p11;
449 p_UBSEC_rng_ioctl = p12;
450 p_UBSEC_max_key_len_ioctl = p13;
452 /* Perform an open to see if there's actually any unit running. */
453 if (((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) > 0) && (p_UBSEC_max_key_len_ioctl(fd, &max_key_len) == 0))
455 p_UBSEC_ubsec_close(fd);
460 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
466 p_UBSEC_ubsec_bytes_to_bits = NULL;
467 p_UBSEC_ubsec_bits_to_bytes = NULL;
468 p_UBSEC_ubsec_open = NULL;
469 p_UBSEC_ubsec_close = NULL;
470 #ifndef OPENSSL_NO_DH
471 p_UBSEC_diffie_hellman_generate_ioctl = NULL;
472 p_UBSEC_diffie_hellman_agree_ioctl = NULL;
474 #ifndef OPENSSL_NO_RSA
475 p_UBSEC_rsa_mod_exp_ioctl = NULL;
476 p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
478 #ifndef OPENSSL_NO_DSA
479 p_UBSEC_dsa_sign_ioctl = NULL;
480 p_UBSEC_dsa_verify_ioctl = NULL;
482 p_UBSEC_math_accelerate_ioctl = NULL;
483 p_UBSEC_rng_ioctl = NULL;
484 p_UBSEC_max_key_len_ioctl = NULL;
489 static int ubsec_finish(ENGINE *e)
491 free_UBSEC_LIBNAME();
492 if(ubsec_dso == NULL)
494 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_NOT_LOADED);
497 if(!DSO_free(ubsec_dso))
499 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_DSO_FAILURE);
503 p_UBSEC_ubsec_bytes_to_bits = NULL;
504 p_UBSEC_ubsec_bits_to_bytes = NULL;
505 p_UBSEC_ubsec_open = NULL;
506 p_UBSEC_ubsec_close = NULL;
507 #ifndef OPENSSL_NO_DH
508 p_UBSEC_diffie_hellman_generate_ioctl = NULL;
509 p_UBSEC_diffie_hellman_agree_ioctl = NULL;
511 #ifndef OPENSSL_NO_RSA
512 p_UBSEC_rsa_mod_exp_ioctl = NULL;
513 p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
515 #ifndef OPENSSL_NO_DSA
516 p_UBSEC_dsa_sign_ioctl = NULL;
517 p_UBSEC_dsa_verify_ioctl = NULL;
519 p_UBSEC_math_accelerate_ioctl = NULL;
520 p_UBSEC_rng_ioctl = NULL;
521 p_UBSEC_max_key_len_ioctl = NULL;
525 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
527 int initialised = ((ubsec_dso == NULL) ? 0 : 1);
530 case UBSEC_CMD_SO_PATH:
533 UBSECerr(UBSEC_F_UBSEC_CTRL,ERR_R_PASSED_NULL_PARAMETER);
538 UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_ALREADY_LOADED);
541 return set_UBSEC_LIBNAME((const char *)p);
545 UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED);
549 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
550 const BIGNUM *m, BN_CTX *ctx)
555 if(ubsec_dso == NULL)
557 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_NOT_LOADED);
561 /* Check if hardware can't handle this argument. */
562 y_len = BN_num_bits(m);
563 if (y_len > max_key_len) {
564 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
565 return BN_mod_exp(r, a, p, m, ctx);
568 if(!bn_wexpand(r, m->top))
570 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL);
574 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
576 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_UNIT_FAILURE);
577 return BN_mod_exp(r, a, p, m, ctx);
580 if (p_UBSEC_rsa_mod_exp_ioctl(fd, (unsigned char *)a->d, BN_num_bits(a),
581 (unsigned char *)m->d, BN_num_bits(m), (unsigned char *)p->d,
582 BN_num_bits(p), (unsigned char *)r->d, &y_len) != 0)
584 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
585 p_UBSEC_ubsec_close(fd);
587 return BN_mod_exp(r, a, p, m, ctx);
590 p_UBSEC_ubsec_close(fd);
592 r->top = (BN_num_bits(m)+BN_BITS2-1)/BN_BITS2;
596 #ifndef OPENSSL_NO_RSA
597 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
601 if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
603 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP, UBSEC_R_MISSING_KEY_COMPONENTS);
607 to_return = ubsec_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
608 rsa->dmq1, rsa->iqmp, ctx);
609 if (to_return == FAIL_TO_SOFTWARE)
612 * Do in software as hardware failed.
614 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
615 to_return = (*meth->rsa_mod_exp)(r0, I, rsa, ctx);
622 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
623 const BIGNUM *q, const BIGNUM *dp,
624 const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx)
630 m_len = BN_num_bytes(p) + BN_num_bytes(q) + 1;
631 y_len = BN_num_bits(p) + BN_num_bits(q);
633 /* Check if hardware can't handle this argument. */
634 if (y_len > max_key_len) {
635 UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
636 return FAIL_TO_SOFTWARE;
639 if (!bn_wexpand(r, p->top + q->top + 1)) {
640 UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_BN_EXPAND_FAIL);
644 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
646 UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_UNIT_FAILURE);
647 return FAIL_TO_SOFTWARE;
650 if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd,
651 (unsigned char *)a->d, BN_num_bits(a),
652 (unsigned char *)qinv->d, BN_num_bits(qinv),
653 (unsigned char *)dp->d, BN_num_bits(dp),
654 (unsigned char *)p->d, BN_num_bits(p),
655 (unsigned char *)dq->d, BN_num_bits(dq),
656 (unsigned char *)q->d, BN_num_bits(q),
657 (unsigned char *)r->d, &y_len) != 0) {
658 UBSECerr(UBSEC_F_UBSEC_MOD_EXP_CRT, UBSEC_R_REQUEST_FAILED);
659 p_UBSEC_ubsec_close(fd);
660 return FAIL_TO_SOFTWARE;
663 p_UBSEC_ubsec_close(fd);
665 r->top = (BN_num_bits(p) + BN_num_bits(q) + BN_BITS2 - 1)/BN_BITS2;
669 #ifndef OPENSSL_NO_DSA
671 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
672 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
673 BN_CTX *ctx, BN_MONT_CTX *in_mont)
679 /* let rr = a1 ^ p1 mod m */
680 if (!ubsec_mod_exp(rr,a1,p1,m,ctx)) goto end;
681 /* let t = a2 ^ p2 mod m */
682 if (!ubsec_mod_exp(&t,a2,p2,m,ctx)) goto end;
683 /* let rr = rr * t mod m */
684 if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
691 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
692 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
695 return ubsec_mod_exp(r, a, p, m, ctx);
701 * This function is aliased to mod_exp (with the mont stuff dropped).
703 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
704 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
708 #ifndef OPENSSL_NO_RSA
709 /* Do in software if the key is too large for the hardware. */
710 if (BN_num_bits(m) > max_key_len)
712 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
713 ret = (*meth->bn_mod_exp)(r, a, p, m, ctx, m_ctx);
718 ret = ubsec_mod_exp(r, a, p, m, ctx);
724 #ifndef OPENSSL_NO_DH
725 /* This function is aliased to mod_exp (with the dh and mont dropped). */
726 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
727 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
730 return ubsec_mod_exp(r, a, p, m, ctx);
734 #ifndef OPENSSL_NO_DSA
735 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
737 DSA_SIG *to_return = NULL;
738 int s_len = 160, r_len = 160, d_len, fd;
739 BIGNUM m, *r=NULL, *s=NULL;
745 if ((s == NULL) || (r==NULL))
748 d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dlen);
750 if(!bn_wexpand(r, (160+BN_BITS2-1)/BN_BITS2) ||
751 (!bn_wexpand(s, (160+BN_BITS2-1)/BN_BITS2))) {
752 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_BN_EXPAND_FAIL);
756 if (BN_bin2bn(dgst,dlen,&m) == NULL) {
757 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_BN_EXPAND_FAIL);
761 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
762 const DSA_METHOD *meth;
764 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_UNIT_FAILURE);
765 meth = DSA_OpenSSL();
766 to_return = meth->dsa_do_sign(dgst, dlen, dsa);
770 if (p_UBSEC_dsa_sign_ioctl(fd, 0, /* compute hash before signing */
771 (unsigned char *)dgst, d_len,
772 NULL, 0, /* compute random value */
773 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
774 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
775 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
776 (unsigned char *)dsa->priv_key->d, BN_num_bits(dsa->priv_key),
777 (unsigned char *)r->d, &r_len,
778 (unsigned char *)s->d, &s_len ) != 0) {
779 const DSA_METHOD *meth;
781 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_REQUEST_FAILED);
782 p_UBSEC_ubsec_close(fd);
783 meth = DSA_OpenSSL();
784 to_return = meth->dsa_do_sign(dgst, dlen, dsa);
789 p_UBSEC_ubsec_close(fd);
791 r->top = (160+BN_BITS2-1)/BN_BITS2;
792 s->top = (160+BN_BITS2-1)/BN_BITS2;
794 to_return = DSA_SIG_new();
795 if(to_return == NULL) {
796 UBSECerr(UBSEC_F_UBSEC_DSA_DO_SIGN, UBSEC_R_BN_EXPAND_FAIL);
812 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
813 DSA_SIG *sig, DSA *dsa)
822 if(!bn_wexpand(&v, dsa->p->top)) {
823 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY, UBSEC_R_BN_EXPAND_FAIL);
827 v_len = BN_num_bits(dsa->p);
829 d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dgst_len);
831 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
832 const DSA_METHOD *meth;
834 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY, UBSEC_R_UNIT_FAILURE);
835 meth = DSA_OpenSSL();
836 to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
840 if (p_UBSEC_dsa_verify_ioctl(fd, 0, /* compute hash before signing */
841 (unsigned char *)dgst, d_len,
842 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
843 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
844 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
845 (unsigned char *)dsa->pub_key->d, BN_num_bits(dsa->pub_key),
846 (unsigned char *)sig->r->d, BN_num_bits(sig->r),
847 (unsigned char *)sig->s->d, BN_num_bits(sig->s),
848 (unsigned char *)v.d, &v_len) != 0) {
849 const DSA_METHOD *meth;
850 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY, UBSEC_R_REQUEST_FAILED);
851 p_UBSEC_ubsec_close(fd);
853 meth = DSA_OpenSSL();
854 to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
859 p_UBSEC_ubsec_close(fd);
868 #ifndef OPENSSL_NO_DH
869 static int ubsec_dh_compute_key(unsigned char *key,const BIGNUM *pub_key,DH *dh)
875 k_len = BN_num_bits(dh->p);
877 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
879 const DH_METHOD *meth;
880 UBSECerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_UNIT_FAILURE);
882 ret = meth->compute_key(key, pub_key, dh);
886 if (p_UBSEC_diffie_hellman_agree_ioctl(fd,
887 (unsigned char *)dh->priv_key->d, BN_num_bits(dh->priv_key),
888 (unsigned char *)pub_key->d, BN_num_bits(pub_key),
889 (unsigned char *)dh->p->d, BN_num_bits(dh->p),
892 /* Hardware's a no go, failover to software */
893 const DH_METHOD *meth;
894 UBSECerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_REQUEST_FAILED);
895 p_UBSEC_ubsec_close(fd);
898 ret = meth->compute_key(key, pub_key, dh);
903 p_UBSEC_ubsec_close(fd);
905 ret = p_UBSEC_ubsec_bits_to_bytes(k_len);
910 static int ubsec_dh_generate_key(DH *dh)
917 BIGNUM *pub_key = NULL;
918 BIGNUM *priv_key = NULL;
921 * How many bits should Random x be? dh_key.c
922 * sets the range from 0 to num_bits(modulus) ???
925 if (dh->priv_key == NULL)
928 if (priv_key == NULL) goto err;
929 priv_key_len = BN_num_bits(dh->p);
930 bn_wexpand(priv_key, dh->p->top);
932 if (!BN_rand_range(priv_key, dh->p)) goto err;
933 while (BN_is_zero(priv_key));
934 random_bits = BN_num_bits(priv_key);
938 priv_key = dh->priv_key;
941 if (dh->pub_key == NULL)
944 pub_key_len = BN_num_bits(dh->p);
945 bn_wexpand(pub_key, dh->p->top);
946 if(pub_key == NULL) goto err;
950 pub_key = dh->pub_key;
953 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
955 const DH_METHOD *meth;
956 UBSECerr(UBSEC_F_UBSEC_DH_GENERATE_KEY, UBSEC_R_UNIT_FAILURE);
958 ret = meth->generate_key(dh);
962 if (p_UBSEC_diffie_hellman_generate_ioctl(fd,
963 (unsigned char *)priv_key->d, &priv_key_len,
964 (unsigned char *)pub_key->d, &pub_key_len,
965 (unsigned char *)dh->g->d, BN_num_bits(dh->g),
966 (unsigned char *)dh->p->d, BN_num_bits(dh->p),
967 0, 0, random_bits) != 0)
969 /* Hardware's a no go, failover to software */
970 const DH_METHOD *meth;
972 UBSECerr(UBSEC_F_UBSEC_DH_GENERATE_KEY, UBSEC_R_REQUEST_FAILED);
973 p_UBSEC_ubsec_close(fd);
976 ret = meth->generate_key(dh);
981 p_UBSEC_ubsec_close(fd);
983 dh->pub_key = pub_key;
984 dh->pub_key->top = (pub_key_len + BN_BITS2-1) / BN_BITS2;
985 dh->priv_key = priv_key;
986 dh->priv_key->top = (priv_key_len + BN_BITS2-1) / BN_BITS2;
995 static int ubsec_rand_bytes(unsigned char * buf,
1001 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
1003 const RAND_METHOD *meth;
1004 UBSECerr(UBSEC_F_UBSEC_RAND_BYTES, UBSEC_R_UNIT_FAILURE);
1005 num = p_UBSEC_ubsec_bits_to_bytes(num);
1006 meth = RAND_SSLeay();
1007 meth->seed(buf, num);
1008 ret = meth->bytes(buf, num);
1012 num *= 8; /* bytes to bits */
1014 if (p_UBSEC_rng_ioctl(fd,
1019 /* Hardware's a no go, failover to software */
1020 const RAND_METHOD *meth;
1022 UBSECerr(UBSEC_F_UBSEC_RAND_BYTES, UBSEC_R_REQUEST_FAILED);
1023 p_UBSEC_ubsec_close(fd);
1025 num = p_UBSEC_ubsec_bits_to_bytes(num);
1026 meth = RAND_SSLeay();
1027 meth->seed(buf, num);
1028 ret = meth->bytes(buf, num);
1033 p_UBSEC_ubsec_close(fd);
1041 static int ubsec_rand_status(void)
1047 /* This stuff is needed if this ENGINE is being compiled into a self-contained
1048 * shared-library. */
1049 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
1050 static int bind_fn(ENGINE *e, const char *id)
1052 if(id && (strcmp(id, engine_ubsec_id) != 0))
1058 IMPLEMENT_DYNAMIC_CHECK_FN()
1059 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
1060 #endif /* OPENSSL_NO_DYNAMIC_ENGINE */
1062 #endif /* !OPENSSL_NO_HW_UBSEC */
1063 #endif /* !OPENSSL_NO_HW */