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>
69 #ifndef OPENSSL_NO_HW_UBSEC
74 #include "vendor_defns/hw_ubsec.h"
77 #define UBSEC_LIB_NAME "ubsec engine"
78 #include "e_ubsec_err.c"
80 #define FAIL_TO_SOFTWARE -15
82 static int ubsec_destroy(ENGINE *e);
83 static int ubsec_init(ENGINE *e);
84 static int ubsec_finish(ENGINE *e);
85 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
86 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
87 const BIGNUM *m, BN_CTX *ctx);
88 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
89 const BIGNUM *q, const BIGNUM *dp,
90 const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx);
91 #ifndef OPENSSL_NO_RSA
92 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
94 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
95 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
96 #ifndef OPENSSL_NO_DSA
98 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
99 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
100 BN_CTX *ctx, BN_MONT_CTX *in_mont);
101 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
102 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
105 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
106 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
107 DSA_SIG *sig, DSA *dsa);
109 #ifndef OPENSSL_NO_DH
110 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
111 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
113 static int ubsec_dh_compute_key(unsigned char *key,const BIGNUM *pub_key,DH *dh);
114 static int ubsec_dh_generate_key(DH *dh);
118 static int ubsec_rand_bytes(unsigned char *buf, int num);
119 static int ubsec_rand_status(void);
122 #define UBSEC_CMD_SO_PATH ENGINE_CMD_BASE
123 static const ENGINE_CMD_DEFN ubsec_cmd_defns[] = {
126 "Specifies the path to the 'ubsec' shared library",
127 ENGINE_CMD_FLAG_STRING},
131 #ifndef OPENSSL_NO_RSA
132 /* Our internal RSA_METHOD that we provide pointers to */
133 static RSA_METHOD ubsec_rsa =
151 #ifndef OPENSSL_NO_DSA
152 /* Our internal DSA_METHOD that we provide pointers to */
153 static DSA_METHOD ubsec_dsa =
156 ubsec_dsa_do_sign, /* dsa_do_sign */
157 NULL, /* dsa_sign_setup */
158 ubsec_dsa_verify, /* dsa_do_verify */
159 NULL, /* ubsec_dsa_mod_exp */ /* dsa_mod_exp */
160 NULL, /* ubsec_mod_exp_dsa */ /* bn_mod_exp */
168 #ifndef OPENSSL_NO_DH
169 /* Our internal DH_METHOD that we provide pointers to */
170 static DH_METHOD ubsec_dh =
173 ubsec_dh_generate_key,
174 ubsec_dh_compute_key,
183 /* Constants used when creating the ENGINE */
184 static const char *engine_ubsec_id = "ubsec";
185 static const char *engine_ubsec_name = "UBSEC hardware engine support";
187 /* This internal function is used by ENGINE_ubsec() and possibly by the
188 * "dynamic" ENGINE support too */
189 static int bind_helper(ENGINE *e)
191 #ifndef OPENSSL_NO_RSA
192 const RSA_METHOD *meth1;
194 #ifndef OPENSSL_NO_DH
195 #ifndef HAVE_UBSEC_DH
196 const DH_METHOD *meth3;
197 #endif /* HAVE_UBSEC_DH */
199 if(!ENGINE_set_id(e, engine_ubsec_id) ||
200 !ENGINE_set_name(e, engine_ubsec_name) ||
201 #ifndef OPENSSL_NO_RSA
202 !ENGINE_set_RSA(e, &ubsec_rsa) ||
204 #ifndef OPENSSL_NO_DSA
205 !ENGINE_set_DSA(e, &ubsec_dsa) ||
207 #ifndef OPENSSL_NO_DH
208 !ENGINE_set_DH(e, &ubsec_dh) ||
210 !ENGINE_set_destroy_function(e, ubsec_destroy) ||
211 !ENGINE_set_init_function(e, ubsec_init) ||
212 !ENGINE_set_finish_function(e, ubsec_finish) ||
213 !ENGINE_set_ctrl_function(e, ubsec_ctrl) ||
214 !ENGINE_set_cmd_defns(e, ubsec_cmd_defns))
217 #ifndef OPENSSL_NO_RSA
218 /* We know that the "PKCS1_SSLeay()" functions hook properly
219 * to the Broadcom-specific mod_exp and mod_exp_crt so we use
220 * those functions. NB: We don't use ENGINE_openssl() or
221 * anything "more generic" because something like the RSAref
222 * code may not hook properly, and if you own one of these
223 * cards then you have the right to do RSA operations on it
225 meth1 = RSA_PKCS1_SSLeay();
226 ubsec_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
227 ubsec_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
228 ubsec_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
229 ubsec_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
232 #ifndef OPENSSL_NO_DH
233 #ifndef HAVE_UBSEC_DH
234 /* Much the same for Diffie-Hellman */
235 meth3 = DH_OpenSSL();
236 ubsec_dh.generate_key = meth3->generate_key;
237 ubsec_dh.compute_key = meth3->compute_key;
238 #endif /* HAVE_UBSEC_DH */
241 /* Ensure the ubsec error handling is set up */
242 ERR_load_UBSEC_strings();
246 static ENGINE *engine_ubsec(void)
248 ENGINE *ret = ENGINE_new();
251 if(!bind_helper(ret))
259 void ENGINE_load_ubsec(void)
261 /* Copied from eng_[openssl|dyn].c */
262 ENGINE *toadd = engine_ubsec();
269 /* This is a process-global DSO handle used for loading and unloading
270 * the UBSEC library. NB: This is only set (or unset) during an
271 * init() or finish() call (reference counts permitting) and they're
272 * operating with global locks, so this should be thread-safe
275 static DSO *ubsec_dso = NULL;
277 /* These are the function pointers that are (un)set when the library has
278 * successfully (un)loaded. */
280 static t_UBSEC_ubsec_bytes_to_bits *p_UBSEC_ubsec_bytes_to_bits = NULL;
281 static t_UBSEC_ubsec_bits_to_bytes *p_UBSEC_ubsec_bits_to_bytes = NULL;
282 static t_UBSEC_ubsec_open *p_UBSEC_ubsec_open = NULL;
283 static t_UBSEC_ubsec_close *p_UBSEC_ubsec_close = NULL;
284 #ifndef OPENSSL_NO_DH
285 static t_UBSEC_diffie_hellman_generate_ioctl
286 *p_UBSEC_diffie_hellman_generate_ioctl = NULL;
287 static t_UBSEC_diffie_hellman_agree_ioctl *p_UBSEC_diffie_hellman_agree_ioctl = NULL;
289 /* #ifndef OPENSSL_NO_RSA */
290 static t_UBSEC_rsa_mod_exp_ioctl *p_UBSEC_rsa_mod_exp_ioctl = NULL;
291 static t_UBSEC_rsa_mod_exp_crt_ioctl *p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
293 #ifndef OPENSSL_NO_DSA
294 static t_UBSEC_dsa_sign_ioctl *p_UBSEC_dsa_sign_ioctl = NULL;
295 static t_UBSEC_dsa_verify_ioctl *p_UBSEC_dsa_verify_ioctl = NULL;
297 static t_UBSEC_math_accelerate_ioctl *p_UBSEC_math_accelerate_ioctl = NULL;
298 static t_UBSEC_rng_ioctl *p_UBSEC_rng_ioctl = NULL;
299 static t_UBSEC_max_key_len_ioctl *p_UBSEC_max_key_len_ioctl = NULL;
301 static int max_key_len = 1024; /* ??? */
304 * These are the static string constants for the DSO file name and the function
305 * symbol names to bind to.
308 static const char *UBSEC_LIBNAME = NULL;
309 static const char *get_UBSEC_LIBNAME(void)
312 return UBSEC_LIBNAME;
315 static void free_UBSEC_LIBNAME(void)
318 OPENSSL_free((void*)UBSEC_LIBNAME);
319 UBSEC_LIBNAME = NULL;
321 static long set_UBSEC_LIBNAME(const char *name)
323 free_UBSEC_LIBNAME();
324 return (((UBSEC_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
326 static const char *UBSEC_F1 = "ubsec_bytes_to_bits";
327 static const char *UBSEC_F2 = "ubsec_bits_to_bytes";
328 static const char *UBSEC_F3 = "ubsec_open";
329 static const char *UBSEC_F4 = "ubsec_close";
330 #ifndef OPENSSL_NO_DH
331 static const char *UBSEC_F5 = "diffie_hellman_generate_ioctl";
332 static const char *UBSEC_F6 = "diffie_hellman_agree_ioctl";
334 /* #ifndef OPENSSL_NO_RSA */
335 static const char *UBSEC_F7 = "rsa_mod_exp_ioctl";
336 static const char *UBSEC_F8 = "rsa_mod_exp_crt_ioctl";
338 #ifndef OPENSSL_NO_DSA
339 static const char *UBSEC_F9 = "dsa_sign_ioctl";
340 static const char *UBSEC_F10 = "dsa_verify_ioctl";
342 static const char *UBSEC_F11 = "math_accelerate_ioctl";
343 static const char *UBSEC_F12 = "rng_ioctl";
344 static const char *UBSEC_F13 = "ubsec_max_key_len_ioctl";
346 /* Destructor (complements the "ENGINE_ubsec()" constructor) */
347 static int ubsec_destroy(ENGINE *e)
349 free_UBSEC_LIBNAME();
350 ERR_unload_UBSEC_strings();
354 /* (de)initialisation functions. */
355 static int ubsec_init(ENGINE *e)
357 t_UBSEC_ubsec_bytes_to_bits *p1;
358 t_UBSEC_ubsec_bits_to_bytes *p2;
359 t_UBSEC_ubsec_open *p3;
360 t_UBSEC_ubsec_close *p4;
361 #ifndef OPENSSL_NO_DH
362 t_UBSEC_diffie_hellman_generate_ioctl *p5;
363 t_UBSEC_diffie_hellman_agree_ioctl *p6;
365 /* #ifndef OPENSSL_NO_RSA */
366 t_UBSEC_rsa_mod_exp_ioctl *p7;
367 t_UBSEC_rsa_mod_exp_crt_ioctl *p8;
369 #ifndef OPENSSL_NO_DSA
370 t_UBSEC_dsa_sign_ioctl *p9;
371 t_UBSEC_dsa_verify_ioctl *p10;
373 t_UBSEC_math_accelerate_ioctl *p11;
374 t_UBSEC_rng_ioctl *p12;
375 t_UBSEC_max_key_len_ioctl *p13;
378 if(ubsec_dso != NULL)
380 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_ALREADY_LOADED);
384 * Attempt to load libubsec.so/ubsec.dll/whatever.
386 ubsec_dso = DSO_load(NULL, get_UBSEC_LIBNAME(), NULL, 0);
387 if(ubsec_dso == NULL)
389 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
394 !(p1 = (t_UBSEC_ubsec_bytes_to_bits *) DSO_bind_func(ubsec_dso, UBSEC_F1)) ||
395 !(p2 = (t_UBSEC_ubsec_bits_to_bytes *) DSO_bind_func(ubsec_dso, UBSEC_F2)) ||
396 !(p3 = (t_UBSEC_ubsec_open *) DSO_bind_func(ubsec_dso, UBSEC_F3)) ||
397 !(p4 = (t_UBSEC_ubsec_close *) DSO_bind_func(ubsec_dso, UBSEC_F4)) ||
398 #ifndef OPENSSL_NO_DH
399 !(p5 = (t_UBSEC_diffie_hellman_generate_ioctl *)
400 DSO_bind_func(ubsec_dso, UBSEC_F5)) ||
401 !(p6 = (t_UBSEC_diffie_hellman_agree_ioctl *)
402 DSO_bind_func(ubsec_dso, UBSEC_F6)) ||
404 /* #ifndef OPENSSL_NO_RSA */
405 !(p7 = (t_UBSEC_rsa_mod_exp_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F7)) ||
406 !(p8 = (t_UBSEC_rsa_mod_exp_crt_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F8)) ||
408 #ifndef OPENSSL_NO_DSA
409 !(p9 = (t_UBSEC_dsa_sign_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F9)) ||
410 !(p10 = (t_UBSEC_dsa_verify_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F10)) ||
412 !(p11 = (t_UBSEC_math_accelerate_ioctl *)
413 DSO_bind_func(ubsec_dso, UBSEC_F11)) ||
414 !(p12 = (t_UBSEC_rng_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F12)) ||
415 !(p13 = (t_UBSEC_max_key_len_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F13)))
417 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE);
421 /* Copy the pointers */
422 p_UBSEC_ubsec_bytes_to_bits = p1;
423 p_UBSEC_ubsec_bits_to_bytes = p2;
424 p_UBSEC_ubsec_open = p3;
425 p_UBSEC_ubsec_close = p4;
426 #ifndef OPENSSL_NO_DH
427 p_UBSEC_diffie_hellman_generate_ioctl = p5;
428 p_UBSEC_diffie_hellman_agree_ioctl = p6;
430 #ifndef OPENSSL_NO_RSA
431 p_UBSEC_rsa_mod_exp_ioctl = p7;
432 p_UBSEC_rsa_mod_exp_crt_ioctl = p8;
434 #ifndef OPENSSL_NO_DSA
435 p_UBSEC_dsa_sign_ioctl = p9;
436 p_UBSEC_dsa_verify_ioctl = p10;
438 p_UBSEC_math_accelerate_ioctl = p11;
439 p_UBSEC_rng_ioctl = p12;
440 p_UBSEC_max_key_len_ioctl = p13;
442 /* Perform an open to see if there's actually any unit running. */
443 if (((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) > 0) && (p_UBSEC_max_key_len_ioctl(fd, &max_key_len) == 0))
445 p_UBSEC_ubsec_close(fd);
450 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
456 p_UBSEC_ubsec_bytes_to_bits = NULL;
457 p_UBSEC_ubsec_bits_to_bytes = NULL;
458 p_UBSEC_ubsec_open = NULL;
459 p_UBSEC_ubsec_close = NULL;
460 #ifndef OPENSSL_NO_DH
461 p_UBSEC_diffie_hellman_generate_ioctl = NULL;
462 p_UBSEC_diffie_hellman_agree_ioctl = NULL;
464 #ifndef OPENSSL_NO_RSA
465 p_UBSEC_rsa_mod_exp_ioctl = NULL;
466 p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
468 #ifndef OPENSSL_NO_DSA
469 p_UBSEC_dsa_sign_ioctl = NULL;
470 p_UBSEC_dsa_verify_ioctl = NULL;
472 p_UBSEC_math_accelerate_ioctl = NULL;
473 p_UBSEC_rng_ioctl = NULL;
474 p_UBSEC_max_key_len_ioctl = NULL;
479 static int ubsec_finish(ENGINE *e)
481 free_UBSEC_LIBNAME();
482 if(ubsec_dso == NULL)
484 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_NOT_LOADED);
487 if(!DSO_free(ubsec_dso))
489 UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_DSO_FAILURE);
493 p_UBSEC_ubsec_bytes_to_bits = NULL;
494 p_UBSEC_ubsec_bits_to_bytes = NULL;
495 p_UBSEC_ubsec_open = NULL;
496 p_UBSEC_ubsec_close = NULL;
497 #ifndef OPENSSL_NO_DH
498 p_UBSEC_diffie_hellman_generate_ioctl = NULL;
499 p_UBSEC_diffie_hellman_agree_ioctl = NULL;
501 #ifndef OPENSSL_NO_RSA
502 p_UBSEC_rsa_mod_exp_ioctl = NULL;
503 p_UBSEC_rsa_mod_exp_crt_ioctl = NULL;
505 #ifndef OPENSSL_NO_DSA
506 p_UBSEC_dsa_sign_ioctl = NULL;
507 p_UBSEC_dsa_verify_ioctl = NULL;
509 p_UBSEC_math_accelerate_ioctl = NULL;
510 p_UBSEC_rng_ioctl = NULL;
511 p_UBSEC_max_key_len_ioctl = NULL;
515 static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
517 int initialised = ((ubsec_dso == NULL) ? 0 : 1);
520 case UBSEC_CMD_SO_PATH:
523 UBSECerr(UBSEC_F_UBSEC_CTRL,ERR_R_PASSED_NULL_PARAMETER);
528 UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_ALREADY_LOADED);
531 return set_UBSEC_LIBNAME((const char *)p);
535 UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED);
539 static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
540 const BIGNUM *m, BN_CTX *ctx)
545 if(ubsec_dso == NULL)
547 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_NOT_LOADED);
551 /* Check if hardware can't handle this argument. */
552 y_len = BN_num_bits(m);
553 if (y_len > max_key_len) {
554 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
555 return BN_mod_exp(r, a, p, m, ctx);
558 if(!bn_wexpand(r, m->top))
560 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL);
563 memset(r->d, 0, BN_num_bytes(m));
565 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
567 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
568 return BN_mod_exp(r, a, p, m, ctx);
571 if (p_UBSEC_rsa_mod_exp_ioctl(fd, (unsigned char *)a->d, BN_num_bits(a),
572 (unsigned char *)m->d, BN_num_bits(m), (unsigned char *)p->d,
573 BN_num_bits(p), (unsigned char *)r->d, &y_len) != 0)
575 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
576 p_UBSEC_ubsec_close(fd);
578 return BN_mod_exp(r, a, p, m, ctx);
581 p_UBSEC_ubsec_close(fd);
583 r->top = (BN_num_bits(m)+BN_BITS2-1)/BN_BITS2;
587 #ifndef OPENSSL_NO_RSA
588 static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
593 if((ctx = BN_CTX_new()) == NULL)
596 if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
598 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP, UBSEC_R_MISSING_KEY_COMPONENTS);
602 to_return = ubsec_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
603 rsa->dmq1, rsa->iqmp, ctx);
604 if (to_return == FAIL_TO_SOFTWARE)
607 * Do in software as hardware failed.
609 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
610 to_return = (*meth->rsa_mod_exp)(r0, I, rsa);
619 static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
620 const BIGNUM *q, const BIGNUM *dp,
621 const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx)
627 m_len = BN_num_bytes(p) + BN_num_bytes(q) + 1;
628 y_len = BN_num_bits(p) + BN_num_bits(q);
630 /* Check if hardware can't handle this argument. */
631 if (y_len > max_key_len) {
632 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
633 return FAIL_TO_SOFTWARE;
636 if (!bn_wexpand(r, p->top + q->top + 1)) {
637 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP_CRT, UBSEC_R_BN_EXPAND_FAIL);
641 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
643 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
644 return FAIL_TO_SOFTWARE;
647 if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd,
648 (unsigned char *)a->d, BN_num_bits(a),
649 (unsigned char *)qinv->d, BN_num_bits(qinv),
650 (unsigned char *)dp->d, BN_num_bits(dp),
651 (unsigned char *)p->d, BN_num_bits(p),
652 (unsigned char *)dq->d, BN_num_bits(dq),
653 (unsigned char *)q->d, BN_num_bits(q),
654 (unsigned char *)r->d, &y_len) != 0) {
655 UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED);
656 p_UBSEC_ubsec_close(fd);
657 return FAIL_TO_SOFTWARE;
660 p_UBSEC_ubsec_close(fd);
662 r->top = (BN_num_bits(p) + BN_num_bits(q) + BN_BITS2 - 1)/BN_BITS2;
666 #ifndef OPENSSL_NO_DSA
668 static int ubsec_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
669 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
670 BN_CTX *ctx, BN_MONT_CTX *in_mont)
676 /* let rr = a1 ^ p1 mod m */
677 if (!ubsec_mod_exp(rr,a1,p1,m,ctx)) goto end;
678 /* let t = a2 ^ p2 mod m */
679 if (!ubsec_mod_exp(&t,a2,p2,m,ctx)) goto end;
680 /* let rr = rr * t mod m */
681 if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
688 static int ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
689 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
692 return ubsec_mod_exp(r, a, p, m, ctx);
698 * This function is aliased to mod_exp (with the mont stuff dropped).
700 static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
701 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
705 #ifndef OPENSSL_NO_RSA
706 /* Do in software if the key is too large for the hardware. */
707 if (BN_num_bits(m) > max_key_len)
709 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
710 ret = (*meth->bn_mod_exp)(r, a, p, m, ctx, m_ctx);
715 ret = ubsec_mod_exp(r, a, p, m, ctx);
721 #ifndef OPENSSL_NO_DH
722 /* This function is aliased to mod_exp (with the dh and mont dropped). */
723 static int ubsec_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
724 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
727 return ubsec_mod_exp(r, a, p, m, ctx);
731 #ifndef OPENSSL_NO_DSA
732 static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa)
734 DSA_SIG *to_return = NULL;
735 int s_len = 160, r_len = 160, d_len, fd;
736 BIGNUM m, *r=NULL, *s=NULL;
742 if ((s == NULL) || (r==NULL))
745 d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dlen);
747 if(!bn_wexpand(r, (160+BN_BITS2-1)/BN_BITS2) ||
748 (!bn_wexpand(s, (160+BN_BITS2-1)/BN_BITS2))) {
749 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
753 if (BN_bin2bn(dgst,dlen,&m) == NULL) {
754 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
758 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
759 const DSA_METHOD *meth;
761 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
762 meth = DSA_OpenSSL();
763 to_return = meth->dsa_do_sign(dgst, dlen, dsa);
767 if (p_UBSEC_dsa_sign_ioctl(fd, 0, /* compute hash before signing */
768 (unsigned char *)dgst, d_len,
769 NULL, 0, /* compute random value */
770 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
771 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
772 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
773 (unsigned char *)dsa->priv_key->d, BN_num_bits(dsa->priv_key),
774 (unsigned char *)r->d, &r_len,
775 (unsigned char *)s->d, &s_len ) != 0) {
776 const DSA_METHOD *meth;
778 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_REQUEST_FAILED);
779 p_UBSEC_ubsec_close(fd);
780 meth = DSA_OpenSSL();
781 to_return = meth->dsa_do_sign(dgst, dlen, dsa);
786 p_UBSEC_ubsec_close(fd);
788 r->top = (160+BN_BITS2-1)/BN_BITS2;
789 s->top = (160+BN_BITS2-1)/BN_BITS2;
791 to_return = DSA_SIG_new();
792 if(to_return == NULL) {
793 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL);
809 static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len,
810 DSA_SIG *sig, DSA *dsa)
819 if(!bn_wexpand(&v, dsa->p->top)) {
820 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY ,UBSEC_R_BN_EXPAND_FAIL);
824 v_len = BN_num_bits(dsa->p);
826 d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dgst_len);
828 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
829 const DSA_METHOD *meth;
831 UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
832 meth = DSA_OpenSSL();
833 to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
837 if (p_UBSEC_dsa_verify_ioctl(fd, 0, /* compute hash before signing */
838 (unsigned char *)dgst, d_len,
839 (unsigned char *)dsa->p->d, BN_num_bits(dsa->p),
840 (unsigned char *)dsa->q->d, BN_num_bits(dsa->q),
841 (unsigned char *)dsa->g->d, BN_num_bits(dsa->g),
842 (unsigned char *)dsa->pub_key->d, BN_num_bits(dsa->pub_key),
843 (unsigned char *)sig->r->d, BN_num_bits(sig->r),
844 (unsigned char *)sig->s->d, BN_num_bits(sig->s),
845 (unsigned char *)v.d, &v_len) != 0) {
846 const DSA_METHOD *meth;
847 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY , UBSEC_R_REQUEST_FAILED);
848 p_UBSEC_ubsec_close(fd);
850 meth = DSA_OpenSSL();
851 to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa);
856 p_UBSEC_ubsec_close(fd);
865 #ifndef OPENSSL_NO_DH
866 static int ubsec_dh_compute_key (unsigned char *key,const BIGNUM *pub_key,DH *dh)
872 k_len = BN_num_bits(dh->p);
874 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
876 const DH_METHOD *meth;
877 ENGINEerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
879 ret = meth->compute_key(key, pub_key, dh);
883 if (p_UBSEC_diffie_hellman_agree_ioctl(fd,
884 (unsigned char *)dh->priv_key->d, BN_num_bits(dh->priv_key),
885 (unsigned char *)pub_key->d, BN_num_bits(pub_key),
886 (unsigned char *)dh->p->d, BN_num_bits(dh->p),
889 /* Hardware's a no go, failover to software */
890 const DH_METHOD *meth;
891 ENGINEerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_REQUEST_FAILED);
892 p_UBSEC_ubsec_close(fd);
895 ret = meth->compute_key(key, pub_key, dh);
900 p_UBSEC_ubsec_close(fd);
902 ret = p_UBSEC_ubsec_bits_to_bytes(k_len);
907 static int ubsec_dh_generate_key (DH *dh)
914 BIGNUM *pub_key = NULL;
915 BIGNUM *priv_key = NULL;
918 * How many bits should Random x be? dh_key.c
919 * sets the range from 0 to num_bits(modulus) ???
922 if (dh->priv_key == NULL)
925 if (priv_key == NULL) goto err;
926 priv_key_len = BN_num_bits(dh->p);
927 bn_wexpand(priv_key, dh->p->top);
929 if (!BN_rand_range(priv_key, dh->p)) goto err;
930 while (BN_is_zero(priv_key));
931 random_bits = BN_num_bits(priv_key);
935 priv_key = dh->priv_key;
938 if (dh->pub_key == NULL)
941 pub_key_len = BN_num_bits(dh->p);
942 bn_wexpand(pub_key, dh->p->top);
943 if(pub_key == NULL) goto err;
947 pub_key = dh->pub_key;
950 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
952 const DH_METHOD *meth;
953 ENGINEerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
955 ret = meth->generate_key(dh);
959 if (p_UBSEC_diffie_hellman_generate_ioctl(fd,
960 (unsigned char *)priv_key->d, &priv_key_len,
961 (unsigned char *)pub_key->d, &pub_key_len,
962 (unsigned char *)dh->g->d, BN_num_bits(dh->g),
963 (unsigned char *)dh->p->d, BN_num_bits(dh->p),
964 0, 0, random_bits) != 0)
966 /* Hardware's a no go, failover to software */
967 const DH_METHOD *meth;
969 ENGINEerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_REQUEST_FAILED);
970 p_UBSEC_ubsec_close(fd);
973 ret = meth->generate_key(dh);
978 p_UBSEC_ubsec_close(fd);
980 dh->pub_key = pub_key;
981 dh->pub_key->top = (pub_key_len + BN_BITS2-1) / BN_BITS2;
982 dh->priv_key = priv_key;
983 dh->priv_key->top = (priv_key_len + BN_BITS2-1) / BN_BITS2;
992 static int ubsec_rand_bytes(unsigned char * buf,
998 if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0)
1000 const RAND_METHOD *meth;
1001 ENGINEerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE);
1002 num = p_UBSEC_ubsec_bits_to_bytes(num);
1003 meth = RAND_SSLeay();
1004 meth->seed(buf, num);
1005 ret = meth->bytes(buf, num);
1009 num *= 8; /* bytes to bits */
1011 if (p_UBSEC_rng_ioctl(fd,
1016 /* Hardware's a no go, failover to software */
1017 const RAND_METHOD *meth;
1019 ENGINEerr(UBSEC_F_UBSEC_RNG_BYTES, UBSEC_R_REQUEST_FAILED);
1020 p_UBSEC_ubsec_close(fd);
1022 num = p_UBSEC_ubsec_bits_to_bytes(num);
1023 meth = RAND_SSLeay();
1024 meth->seed(buf, num);
1025 ret = meth->bytes(buf, num);
1030 p_UBSEC_ubsec_close(fd);
1038 static int ubsec_rand_status(void)
1044 /* This stuff is needed if this ENGINE is being compiled into a self-contained
1045 * shared-library. */
1046 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
1047 static int bind_fn(ENGINE *e, const char *id)
1049 if(id && (strcmp(id, engine_ubsec_id) != 0))
1055 IMPLEMENT_DYNAMIC_CHECK_FN()
1056 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
1057 #endif /* OPENSSL_NO_DYNAMIC_ENGINE */
1059 #endif /* !OPENSSL_NO_HW_UBSEC */
1060 #endif /* !OPENSSL_NO_HW */