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
=
152 #ifndef OPENSSL_NO_DSA
153 /* Our internal DSA_METHOD that we provide pointers to */
154 static DSA_METHOD ubsec_dsa
=
157 ubsec_dsa_do_sign
, /* dsa_do_sign */
158 NULL
, /* dsa_sign_setup */
159 ubsec_dsa_verify
, /* dsa_do_verify */
160 NULL
, /* ubsec_dsa_mod_exp */ /* dsa_mod_exp */
161 NULL
, /* ubsec_mod_exp_dsa */ /* bn_mod_exp */
166 NULL
, /* dsa_paramgen */
167 NULL
/* dsa_keygen */
171 #ifndef OPENSSL_NO_DH
172 /* Our internal DH_METHOD that we provide pointers to */
173 static DH_METHOD ubsec_dh
=
176 ubsec_dh_generate_key
,
177 ubsec_dh_compute_key
,
187 /* Constants used when creating the ENGINE */
188 static const char *engine_ubsec_id
= "ubsec";
189 static const char *engine_ubsec_name
= "UBSEC hardware engine support";
191 /* This internal function is used by ENGINE_ubsec() and possibly by the
192 * "dynamic" ENGINE support too */
193 static int bind_helper(ENGINE
*e
)
195 #ifndef OPENSSL_NO_RSA
196 const RSA_METHOD
*meth1
;
198 #ifndef OPENSSL_NO_DH
199 #ifndef HAVE_UBSEC_DH
200 const DH_METHOD
*meth3
;
201 #endif /* HAVE_UBSEC_DH */
203 if(!ENGINE_set_id(e
, engine_ubsec_id
) ||
204 !ENGINE_set_name(e
, engine_ubsec_name
) ||
205 #ifndef OPENSSL_NO_RSA
206 !ENGINE_set_RSA(e
, &ubsec_rsa
) ||
208 #ifndef OPENSSL_NO_DSA
209 !ENGINE_set_DSA(e
, &ubsec_dsa
) ||
211 #ifndef OPENSSL_NO_DH
212 !ENGINE_set_DH(e
, &ubsec_dh
) ||
214 !ENGINE_set_destroy_function(e
, ubsec_destroy
) ||
215 !ENGINE_set_init_function(e
, ubsec_init
) ||
216 !ENGINE_set_finish_function(e
, ubsec_finish
) ||
217 !ENGINE_set_ctrl_function(e
, ubsec_ctrl
) ||
218 !ENGINE_set_cmd_defns(e
, ubsec_cmd_defns
))
221 #ifndef OPENSSL_NO_RSA
222 /* We know that the "PKCS1_SSLeay()" functions hook properly
223 * to the Broadcom-specific mod_exp and mod_exp_crt so we use
224 * those functions. NB: We don't use ENGINE_openssl() or
225 * anything "more generic" because something like the RSAref
226 * code may not hook properly, and if you own one of these
227 * cards then you have the right to do RSA operations on it
229 meth1
= RSA_PKCS1_SSLeay();
230 ubsec_rsa
.rsa_pub_enc
= meth1
->rsa_pub_enc
;
231 ubsec_rsa
.rsa_pub_dec
= meth1
->rsa_pub_dec
;
232 ubsec_rsa
.rsa_priv_enc
= meth1
->rsa_priv_enc
;
233 ubsec_rsa
.rsa_priv_dec
= meth1
->rsa_priv_dec
;
236 #ifndef OPENSSL_NO_DH
237 #ifndef HAVE_UBSEC_DH
238 /* Much the same for Diffie-Hellman */
239 meth3
= DH_OpenSSL();
240 ubsec_dh
.generate_key
= meth3
->generate_key
;
241 ubsec_dh
.compute_key
= meth3
->compute_key
;
242 #endif /* HAVE_UBSEC_DH */
245 /* Ensure the ubsec error handling is set up */
246 ERR_load_UBSEC_strings();
250 #ifdef OPENSSL_NO_DYNAMIC_ENGINE
251 static ENGINE
*engine_ubsec(void)
253 ENGINE
*ret
= ENGINE_new();
256 if(!bind_helper(ret
))
264 void ENGINE_load_ubsec(void)
266 /* Copied from eng_[openssl|dyn].c */
267 ENGINE
*toadd
= engine_ubsec();
275 /* This is a process-global DSO handle used for loading and unloading
276 * the UBSEC library. NB: This is only set (or unset) during an
277 * init() or finish() call (reference counts permitting) and they're
278 * operating with global locks, so this should be thread-safe
281 static DSO
*ubsec_dso
= NULL
;
283 /* These are the function pointers that are (un)set when the library has
284 * successfully (un)loaded. */
286 static t_UBSEC_ubsec_bytes_to_bits
*p_UBSEC_ubsec_bytes_to_bits
= NULL
;
287 static t_UBSEC_ubsec_bits_to_bytes
*p_UBSEC_ubsec_bits_to_bytes
= NULL
;
288 static t_UBSEC_ubsec_open
*p_UBSEC_ubsec_open
= NULL
;
289 static t_UBSEC_ubsec_close
*p_UBSEC_ubsec_close
= NULL
;
290 #ifndef OPENSSL_NO_DH
291 static t_UBSEC_diffie_hellman_generate_ioctl
292 *p_UBSEC_diffie_hellman_generate_ioctl
= NULL
;
293 static t_UBSEC_diffie_hellman_agree_ioctl
*p_UBSEC_diffie_hellman_agree_ioctl
= NULL
;
295 /* #ifndef OPENSSL_NO_RSA */
296 static t_UBSEC_rsa_mod_exp_ioctl
*p_UBSEC_rsa_mod_exp_ioctl
= NULL
;
297 static t_UBSEC_rsa_mod_exp_crt_ioctl
*p_UBSEC_rsa_mod_exp_crt_ioctl
= NULL
;
299 #ifndef OPENSSL_NO_DSA
300 static t_UBSEC_dsa_sign_ioctl
*p_UBSEC_dsa_sign_ioctl
= NULL
;
301 static t_UBSEC_dsa_verify_ioctl
*p_UBSEC_dsa_verify_ioctl
= NULL
;
303 static t_UBSEC_math_accelerate_ioctl
*p_UBSEC_math_accelerate_ioctl
= NULL
;
304 static t_UBSEC_rng_ioctl
*p_UBSEC_rng_ioctl
= NULL
;
305 static t_UBSEC_max_key_len_ioctl
*p_UBSEC_max_key_len_ioctl
= NULL
;
307 static int max_key_len
= 1024; /* ??? */
310 * These are the static string constants for the DSO file name and the function
311 * symbol names to bind to.
314 static const char *UBSEC_LIBNAME
= NULL
;
315 static const char *get_UBSEC_LIBNAME(void)
318 return UBSEC_LIBNAME
;
321 static void free_UBSEC_LIBNAME(void)
324 OPENSSL_free((void*)UBSEC_LIBNAME
);
325 UBSEC_LIBNAME
= NULL
;
327 static long set_UBSEC_LIBNAME(const char *name
)
329 free_UBSEC_LIBNAME();
330 return (((UBSEC_LIBNAME
= BUF_strdup(name
)) != NULL
) ? 1 : 0);
332 static const char *UBSEC_F1
= "ubsec_bytes_to_bits";
333 static const char *UBSEC_F2
= "ubsec_bits_to_bytes";
334 static const char *UBSEC_F3
= "ubsec_open";
335 static const char *UBSEC_F4
= "ubsec_close";
336 #ifndef OPENSSL_NO_DH
337 static const char *UBSEC_F5
= "diffie_hellman_generate_ioctl";
338 static const char *UBSEC_F6
= "diffie_hellman_agree_ioctl";
340 /* #ifndef OPENSSL_NO_RSA */
341 static const char *UBSEC_F7
= "rsa_mod_exp_ioctl";
342 static const char *UBSEC_F8
= "rsa_mod_exp_crt_ioctl";
344 #ifndef OPENSSL_NO_DSA
345 static const char *UBSEC_F9
= "dsa_sign_ioctl";
346 static const char *UBSEC_F10
= "dsa_verify_ioctl";
348 static const char *UBSEC_F11
= "math_accelerate_ioctl";
349 static const char *UBSEC_F12
= "rng_ioctl";
350 static const char *UBSEC_F13
= "ubsec_max_key_len_ioctl";
352 /* Destructor (complements the "ENGINE_ubsec()" constructor) */
353 static int ubsec_destroy(ENGINE
*e
)
355 free_UBSEC_LIBNAME();
356 ERR_unload_UBSEC_strings();
360 /* (de)initialisation functions. */
361 static int ubsec_init(ENGINE
*e
)
363 t_UBSEC_ubsec_bytes_to_bits
*p1
;
364 t_UBSEC_ubsec_bits_to_bytes
*p2
;
365 t_UBSEC_ubsec_open
*p3
;
366 t_UBSEC_ubsec_close
*p4
;
367 #ifndef OPENSSL_NO_DH
368 t_UBSEC_diffie_hellman_generate_ioctl
*p5
;
369 t_UBSEC_diffie_hellman_agree_ioctl
*p6
;
371 /* #ifndef OPENSSL_NO_RSA */
372 t_UBSEC_rsa_mod_exp_ioctl
*p7
;
373 t_UBSEC_rsa_mod_exp_crt_ioctl
*p8
;
375 #ifndef OPENSSL_NO_DSA
376 t_UBSEC_dsa_sign_ioctl
*p9
;
377 t_UBSEC_dsa_verify_ioctl
*p10
;
379 t_UBSEC_math_accelerate_ioctl
*p11
;
380 t_UBSEC_rng_ioctl
*p12
;
381 t_UBSEC_max_key_len_ioctl
*p13
;
384 if(ubsec_dso
!= NULL
)
386 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_ALREADY_LOADED
);
390 * Attempt to load libubsec.so/ubsec.dll/whatever.
392 ubsec_dso
= DSO_load(NULL
, get_UBSEC_LIBNAME(), NULL
, 0);
393 if(ubsec_dso
== NULL
)
395 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_DSO_FAILURE
);
400 !(p1
= (t_UBSEC_ubsec_bytes_to_bits
*) DSO_bind_func(ubsec_dso
, UBSEC_F1
)) ||
401 !(p2
= (t_UBSEC_ubsec_bits_to_bytes
*) DSO_bind_func(ubsec_dso
, UBSEC_F2
)) ||
402 !(p3
= (t_UBSEC_ubsec_open
*) DSO_bind_func(ubsec_dso
, UBSEC_F3
)) ||
403 !(p4
= (t_UBSEC_ubsec_close
*) DSO_bind_func(ubsec_dso
, UBSEC_F4
)) ||
404 #ifndef OPENSSL_NO_DH
405 !(p5
= (t_UBSEC_diffie_hellman_generate_ioctl
*)
406 DSO_bind_func(ubsec_dso
, UBSEC_F5
)) ||
407 !(p6
= (t_UBSEC_diffie_hellman_agree_ioctl
*)
408 DSO_bind_func(ubsec_dso
, UBSEC_F6
)) ||
410 /* #ifndef OPENSSL_NO_RSA */
411 !(p7
= (t_UBSEC_rsa_mod_exp_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F7
)) ||
412 !(p8
= (t_UBSEC_rsa_mod_exp_crt_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F8
)) ||
414 #ifndef OPENSSL_NO_DSA
415 !(p9
= (t_UBSEC_dsa_sign_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F9
)) ||
416 !(p10
= (t_UBSEC_dsa_verify_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F10
)) ||
418 !(p11
= (t_UBSEC_math_accelerate_ioctl
*)
419 DSO_bind_func(ubsec_dso
, UBSEC_F11
)) ||
420 !(p12
= (t_UBSEC_rng_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F12
)) ||
421 !(p13
= (t_UBSEC_max_key_len_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F13
)))
423 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_DSO_FAILURE
);
427 /* Copy the pointers */
428 p_UBSEC_ubsec_bytes_to_bits
= p1
;
429 p_UBSEC_ubsec_bits_to_bytes
= p2
;
430 p_UBSEC_ubsec_open
= p3
;
431 p_UBSEC_ubsec_close
= p4
;
432 #ifndef OPENSSL_NO_DH
433 p_UBSEC_diffie_hellman_generate_ioctl
= p5
;
434 p_UBSEC_diffie_hellman_agree_ioctl
= p6
;
436 #ifndef OPENSSL_NO_RSA
437 p_UBSEC_rsa_mod_exp_ioctl
= p7
;
438 p_UBSEC_rsa_mod_exp_crt_ioctl
= p8
;
440 #ifndef OPENSSL_NO_DSA
441 p_UBSEC_dsa_sign_ioctl
= p9
;
442 p_UBSEC_dsa_verify_ioctl
= p10
;
444 p_UBSEC_math_accelerate_ioctl
= p11
;
445 p_UBSEC_rng_ioctl
= p12
;
446 p_UBSEC_max_key_len_ioctl
= p13
;
448 /* Perform an open to see if there's actually any unit running. */
449 if (((fd
= p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME
)) > 0) && (p_UBSEC_max_key_len_ioctl(fd
, &max_key_len
) == 0))
451 p_UBSEC_ubsec_close(fd
);
456 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_UNIT_FAILURE
);
462 p_UBSEC_ubsec_bytes_to_bits
= NULL
;
463 p_UBSEC_ubsec_bits_to_bytes
= NULL
;
464 p_UBSEC_ubsec_open
= NULL
;
465 p_UBSEC_ubsec_close
= NULL
;
466 #ifndef OPENSSL_NO_DH
467 p_UBSEC_diffie_hellman_generate_ioctl
= NULL
;
468 p_UBSEC_diffie_hellman_agree_ioctl
= NULL
;
470 #ifndef OPENSSL_NO_RSA
471 p_UBSEC_rsa_mod_exp_ioctl
= NULL
;
472 p_UBSEC_rsa_mod_exp_crt_ioctl
= NULL
;
474 #ifndef OPENSSL_NO_DSA
475 p_UBSEC_dsa_sign_ioctl
= NULL
;
476 p_UBSEC_dsa_verify_ioctl
= NULL
;
478 p_UBSEC_math_accelerate_ioctl
= NULL
;
479 p_UBSEC_rng_ioctl
= NULL
;
480 p_UBSEC_max_key_len_ioctl
= NULL
;
485 static int ubsec_finish(ENGINE
*e
)
487 free_UBSEC_LIBNAME();
488 if(ubsec_dso
== NULL
)
490 UBSECerr(UBSEC_F_UBSEC_FINISH
, UBSEC_R_NOT_LOADED
);
493 if(!DSO_free(ubsec_dso
))
495 UBSECerr(UBSEC_F_UBSEC_FINISH
, UBSEC_R_DSO_FAILURE
);
499 p_UBSEC_ubsec_bytes_to_bits
= NULL
;
500 p_UBSEC_ubsec_bits_to_bytes
= NULL
;
501 p_UBSEC_ubsec_open
= NULL
;
502 p_UBSEC_ubsec_close
= NULL
;
503 #ifndef OPENSSL_NO_DH
504 p_UBSEC_diffie_hellman_generate_ioctl
= NULL
;
505 p_UBSEC_diffie_hellman_agree_ioctl
= NULL
;
507 #ifndef OPENSSL_NO_RSA
508 p_UBSEC_rsa_mod_exp_ioctl
= NULL
;
509 p_UBSEC_rsa_mod_exp_crt_ioctl
= NULL
;
511 #ifndef OPENSSL_NO_DSA
512 p_UBSEC_dsa_sign_ioctl
= NULL
;
513 p_UBSEC_dsa_verify_ioctl
= NULL
;
515 p_UBSEC_math_accelerate_ioctl
= NULL
;
516 p_UBSEC_rng_ioctl
= NULL
;
517 p_UBSEC_max_key_len_ioctl
= NULL
;
521 static int ubsec_ctrl(ENGINE
*e
, int cmd
, long i
, void *p
, void (*f
)())
523 int initialised
= ((ubsec_dso
== NULL
) ? 0 : 1);
526 case UBSEC_CMD_SO_PATH
:
529 UBSECerr(UBSEC_F_UBSEC_CTRL
,ERR_R_PASSED_NULL_PARAMETER
);
534 UBSECerr(UBSEC_F_UBSEC_CTRL
,UBSEC_R_ALREADY_LOADED
);
537 return set_UBSEC_LIBNAME((const char *)p
);
541 UBSECerr(UBSEC_F_UBSEC_CTRL
,UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED
);
545 static int ubsec_mod_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
546 const BIGNUM
*m
, BN_CTX
*ctx
)
551 if(ubsec_dso
== NULL
)
553 UBSECerr(UBSEC_F_UBSEC_MOD_EXP
, UBSEC_R_NOT_LOADED
);
557 /* Check if hardware can't handle this argument. */
558 y_len
= BN_num_bits(m
);
559 if (y_len
> max_key_len
) {
560 UBSECerr(UBSEC_F_UBSEC_MOD_EXP
, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL
);
561 return BN_mod_exp(r
, a
, p
, m
, ctx
);
564 if(!bn_wexpand(r
, m
->top
))
566 UBSECerr(UBSEC_F_UBSEC_MOD_EXP
, UBSEC_R_BN_EXPAND_FAIL
);
569 memset(r
->d
, 0, BN_num_bytes(m
));
571 if ((fd
= p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME
)) <= 0) {
573 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_UNIT_FAILURE
);
574 return BN_mod_exp(r
, a
, p
, m
, ctx
);
577 if (p_UBSEC_rsa_mod_exp_ioctl(fd
, (unsigned char *)a
->d
, BN_num_bits(a
),
578 (unsigned char *)m
->d
, BN_num_bits(m
), (unsigned char *)p
->d
,
579 BN_num_bits(p
), (unsigned char *)r
->d
, &y_len
) != 0)
581 UBSECerr(UBSEC_F_UBSEC_MOD_EXP
, UBSEC_R_REQUEST_FAILED
);
582 p_UBSEC_ubsec_close(fd
);
584 return BN_mod_exp(r
, a
, p
, m
, ctx
);
587 p_UBSEC_ubsec_close(fd
);
589 r
->top
= (BN_num_bits(m
)+BN_BITS2
-1)/BN_BITS2
;
593 #ifndef OPENSSL_NO_RSA
594 static int ubsec_rsa_mod_exp(BIGNUM
*r0
, const BIGNUM
*I
, RSA
*rsa
)
599 if((ctx
= BN_CTX_new()) == NULL
)
602 if(!rsa
->p
|| !rsa
->q
|| !rsa
->dmp1
|| !rsa
->dmq1
|| !rsa
->iqmp
)
604 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP
, UBSEC_R_MISSING_KEY_COMPONENTS
);
608 to_return
= ubsec_mod_exp_crt(r0
, I
, rsa
->p
, rsa
->q
, rsa
->dmp1
,
609 rsa
->dmq1
, rsa
->iqmp
, ctx
);
610 if (to_return
== FAIL_TO_SOFTWARE
)
613 * Do in software as hardware failed.
615 const RSA_METHOD
*meth
= RSA_PKCS1_SSLeay();
616 to_return
= (*meth
->rsa_mod_exp
)(r0
, I
, rsa
);
625 static int ubsec_mod_exp_crt(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
626 const BIGNUM
*q
, const BIGNUM
*dp
,
627 const BIGNUM
*dq
, const BIGNUM
*qinv
, BN_CTX
*ctx
)
633 m_len
= BN_num_bytes(p
) + BN_num_bytes(q
) + 1;
634 y_len
= BN_num_bits(p
) + BN_num_bits(q
);
636 /* Check if hardware can't handle this argument. */
637 if (y_len
> max_key_len
) {
638 UBSECerr(UBSEC_F_UBSEC_MOD_EXP
, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL
);
639 return FAIL_TO_SOFTWARE
;
642 if (!bn_wexpand(r
, p
->top
+ q
->top
+ 1)) {
643 UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP_CRT
, UBSEC_R_BN_EXPAND_FAIL
);
647 if ((fd
= p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME
)) <= 0) {
649 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_UNIT_FAILURE
);
650 return FAIL_TO_SOFTWARE
;
653 if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd
,
654 (unsigned char *)a
->d
, BN_num_bits(a
),
655 (unsigned char *)qinv
->d
, BN_num_bits(qinv
),
656 (unsigned char *)dp
->d
, BN_num_bits(dp
),
657 (unsigned char *)p
->d
, BN_num_bits(p
),
658 (unsigned char *)dq
->d
, BN_num_bits(dq
),
659 (unsigned char *)q
->d
, BN_num_bits(q
),
660 (unsigned char *)r
->d
, &y_len
) != 0) {
661 UBSECerr(UBSEC_F_UBSEC_MOD_EXP
, UBSEC_R_REQUEST_FAILED
);
662 p_UBSEC_ubsec_close(fd
);
663 return FAIL_TO_SOFTWARE
;
666 p_UBSEC_ubsec_close(fd
);
668 r
->top
= (BN_num_bits(p
) + BN_num_bits(q
) + BN_BITS2
- 1)/BN_BITS2
;
672 #ifndef OPENSSL_NO_DSA
674 static int ubsec_dsa_mod_exp(DSA
*dsa
, BIGNUM
*rr
, BIGNUM
*a1
,
675 BIGNUM
*p1
, BIGNUM
*a2
, BIGNUM
*p2
, BIGNUM
*m
,
676 BN_CTX
*ctx
, BN_MONT_CTX
*in_mont
)
682 /* let rr = a1 ^ p1 mod m */
683 if (!ubsec_mod_exp(rr
,a1
,p1
,m
,ctx
)) goto end
;
684 /* let t = a2 ^ p2 mod m */
685 if (!ubsec_mod_exp(&t
,a2
,p2
,m
,ctx
)) goto end
;
686 /* let rr = rr * t mod m */
687 if (!BN_mod_mul(rr
,rr
,&t
,m
,ctx
)) goto end
;
694 static int ubsec_mod_exp_dsa(DSA
*dsa
, BIGNUM
*r
, BIGNUM
*a
,
695 const BIGNUM
*p
, const BIGNUM
*m
, BN_CTX
*ctx
,
698 return ubsec_mod_exp(r
, a
, p
, m
, ctx
);
704 * This function is aliased to mod_exp (with the mont stuff dropped).
706 static int ubsec_mod_exp_mont(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
707 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
)
711 #ifndef OPENSSL_NO_RSA
712 /* Do in software if the key is too large for the hardware. */
713 if (BN_num_bits(m
) > max_key_len
)
715 const RSA_METHOD
*meth
= RSA_PKCS1_SSLeay();
716 ret
= (*meth
->bn_mod_exp
)(r
, a
, p
, m
, ctx
, m_ctx
);
721 ret
= ubsec_mod_exp(r
, a
, p
, m
, ctx
);
727 #ifndef OPENSSL_NO_DH
728 /* This function is aliased to mod_exp (with the dh and mont dropped). */
729 static int ubsec_mod_exp_dh(const DH
*dh
, BIGNUM
*r
, const BIGNUM
*a
,
730 const BIGNUM
*p
, const BIGNUM
*m
, BN_CTX
*ctx
,
733 return ubsec_mod_exp(r
, a
, p
, m
, ctx
);
737 #ifndef OPENSSL_NO_DSA
738 static DSA_SIG
*ubsec_dsa_do_sign(const unsigned char *dgst
, int dlen
, DSA
*dsa
)
740 DSA_SIG
*to_return
= NULL
;
741 int s_len
= 160, r_len
= 160, d_len
, fd
;
742 BIGNUM m
, *r
=NULL
, *s
=NULL
;
748 if ((s
== NULL
) || (r
==NULL
))
751 d_len
= p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst
, dlen
);
753 if(!bn_wexpand(r
, (160+BN_BITS2
-1)/BN_BITS2
) ||
754 (!bn_wexpand(s
, (160+BN_BITS2
-1)/BN_BITS2
))) {
755 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN
, UBSEC_R_BN_EXPAND_FAIL
);
759 if (BN_bin2bn(dgst
,dlen
,&m
) == NULL
) {
760 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN
, UBSEC_R_BN_EXPAND_FAIL
);
764 if ((fd
= p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME
)) <= 0) {
765 const DSA_METHOD
*meth
;
767 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_UNIT_FAILURE
);
768 meth
= DSA_OpenSSL();
769 to_return
= meth
->dsa_do_sign(dgst
, dlen
, dsa
);
773 if (p_UBSEC_dsa_sign_ioctl(fd
, 0, /* compute hash before signing */
774 (unsigned char *)dgst
, d_len
,
775 NULL
, 0, /* compute random value */
776 (unsigned char *)dsa
->p
->d
, BN_num_bits(dsa
->p
),
777 (unsigned char *)dsa
->q
->d
, BN_num_bits(dsa
->q
),
778 (unsigned char *)dsa
->g
->d
, BN_num_bits(dsa
->g
),
779 (unsigned char *)dsa
->priv_key
->d
, BN_num_bits(dsa
->priv_key
),
780 (unsigned char *)r
->d
, &r_len
,
781 (unsigned char *)s
->d
, &s_len
) != 0) {
782 const DSA_METHOD
*meth
;
784 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN
, UBSEC_R_REQUEST_FAILED
);
785 p_UBSEC_ubsec_close(fd
);
786 meth
= DSA_OpenSSL();
787 to_return
= meth
->dsa_do_sign(dgst
, dlen
, dsa
);
792 p_UBSEC_ubsec_close(fd
);
794 r
->top
= (160+BN_BITS2
-1)/BN_BITS2
;
795 s
->top
= (160+BN_BITS2
-1)/BN_BITS2
;
797 to_return
= DSA_SIG_new();
798 if(to_return
== NULL
) {
799 UBSECerr(UBSEC_F_UBSEC_DSA_SIGN
, UBSEC_R_BN_EXPAND_FAIL
);
815 static int ubsec_dsa_verify(const unsigned char *dgst
, int dgst_len
,
816 DSA_SIG
*sig
, DSA
*dsa
)
825 if(!bn_wexpand(&v
, dsa
->p
->top
)) {
826 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY
,UBSEC_R_BN_EXPAND_FAIL
);
830 v_len
= BN_num_bits(dsa
->p
);
832 d_len
= p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst
, dgst_len
);
834 if ((fd
= p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME
)) <= 0) {
835 const DSA_METHOD
*meth
;
837 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_UNIT_FAILURE
);
838 meth
= DSA_OpenSSL();
839 to_return
= meth
->dsa_do_verify(dgst
, dgst_len
, sig
, dsa
);
843 if (p_UBSEC_dsa_verify_ioctl(fd
, 0, /* compute hash before signing */
844 (unsigned char *)dgst
, d_len
,
845 (unsigned char *)dsa
->p
->d
, BN_num_bits(dsa
->p
),
846 (unsigned char *)dsa
->q
->d
, BN_num_bits(dsa
->q
),
847 (unsigned char *)dsa
->g
->d
, BN_num_bits(dsa
->g
),
848 (unsigned char *)dsa
->pub_key
->d
, BN_num_bits(dsa
->pub_key
),
849 (unsigned char *)sig
->r
->d
, BN_num_bits(sig
->r
),
850 (unsigned char *)sig
->s
->d
, BN_num_bits(sig
->s
),
851 (unsigned char *)v
.d
, &v_len
) != 0) {
852 const DSA_METHOD
*meth
;
853 UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY
, UBSEC_R_REQUEST_FAILED
);
854 p_UBSEC_ubsec_close(fd
);
856 meth
= DSA_OpenSSL();
857 to_return
= meth
->dsa_do_verify(dgst
, dgst_len
, sig
, dsa
);
862 p_UBSEC_ubsec_close(fd
);
871 #ifndef OPENSSL_NO_DH
872 static int ubsec_dh_compute_key (unsigned char *key
,const BIGNUM
*pub_key
,DH
*dh
)
878 k_len
= BN_num_bits(dh
->p
);
880 if ((fd
= p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME
)) <= 0)
882 const DH_METHOD
*meth
;
883 ENGINEerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_UNIT_FAILURE
);
885 ret
= meth
->compute_key(key
, pub_key
, dh
);
889 if (p_UBSEC_diffie_hellman_agree_ioctl(fd
,
890 (unsigned char *)dh
->priv_key
->d
, BN_num_bits(dh
->priv_key
),
891 (unsigned char *)pub_key
->d
, BN_num_bits(pub_key
),
892 (unsigned char *)dh
->p
->d
, BN_num_bits(dh
->p
),
895 /* Hardware's a no go, failover to software */
896 const DH_METHOD
*meth
;
897 ENGINEerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY
, UBSEC_R_REQUEST_FAILED
);
898 p_UBSEC_ubsec_close(fd
);
901 ret
= meth
->compute_key(key
, pub_key
, dh
);
906 p_UBSEC_ubsec_close(fd
);
908 ret
= p_UBSEC_ubsec_bits_to_bytes(k_len
);
913 static int ubsec_dh_generate_key (DH
*dh
)
920 BIGNUM
*pub_key
= NULL
;
921 BIGNUM
*priv_key
= NULL
;
924 * How many bits should Random x be? dh_key.c
925 * sets the range from 0 to num_bits(modulus) ???
928 if (dh
->priv_key
== NULL
)
931 if (priv_key
== NULL
) goto err
;
932 priv_key_len
= BN_num_bits(dh
->p
);
933 bn_wexpand(priv_key
, dh
->p
->top
);
935 if (!BN_rand_range(priv_key
, dh
->p
)) goto err
;
936 while (BN_is_zero(priv_key
));
937 random_bits
= BN_num_bits(priv_key
);
941 priv_key
= dh
->priv_key
;
944 if (dh
->pub_key
== NULL
)
947 pub_key_len
= BN_num_bits(dh
->p
);
948 bn_wexpand(pub_key
, dh
->p
->top
);
949 if(pub_key
== NULL
) goto err
;
953 pub_key
= dh
->pub_key
;
956 if ((fd
= p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME
)) <= 0)
958 const DH_METHOD
*meth
;
959 ENGINEerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_UNIT_FAILURE
);
961 ret
= meth
->generate_key(dh
);
965 if (p_UBSEC_diffie_hellman_generate_ioctl(fd
,
966 (unsigned char *)priv_key
->d
, &priv_key_len
,
967 (unsigned char *)pub_key
->d
, &pub_key_len
,
968 (unsigned char *)dh
->g
->d
, BN_num_bits(dh
->g
),
969 (unsigned char *)dh
->p
->d
, BN_num_bits(dh
->p
),
970 0, 0, random_bits
) != 0)
972 /* Hardware's a no go, failover to software */
973 const DH_METHOD
*meth
;
975 ENGINEerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY
, UBSEC_R_REQUEST_FAILED
);
976 p_UBSEC_ubsec_close(fd
);
979 ret
= meth
->generate_key(dh
);
984 p_UBSEC_ubsec_close(fd
);
986 dh
->pub_key
= pub_key
;
987 dh
->pub_key
->top
= (pub_key_len
+ BN_BITS2
-1) / BN_BITS2
;
988 dh
->priv_key
= priv_key
;
989 dh
->priv_key
->top
= (priv_key_len
+ BN_BITS2
-1) / BN_BITS2
;
998 static int ubsec_rand_bytes(unsigned char * buf
,
1004 if ((fd
= p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME
)) <= 0)
1006 const RAND_METHOD
*meth
;
1007 ENGINEerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_UNIT_FAILURE
);
1008 num
= p_UBSEC_ubsec_bits_to_bytes(num
);
1009 meth
= RAND_SSLeay();
1010 meth
->seed(buf
, num
);
1011 ret
= meth
->bytes(buf
, num
);
1015 num
*= 8; /* bytes to bits */
1017 if (p_UBSEC_rng_ioctl(fd
,
1022 /* Hardware's a no go, failover to software */
1023 const RAND_METHOD
*meth
;
1025 ENGINEerr(UBSEC_F_UBSEC_RNG_BYTES
, UBSEC_R_REQUEST_FAILED
);
1026 p_UBSEC_ubsec_close(fd
);
1028 num
= p_UBSEC_ubsec_bits_to_bytes(num
);
1029 meth
= RAND_SSLeay();
1030 meth
->seed(buf
, num
);
1031 ret
= meth
->bytes(buf
, num
);
1036 p_UBSEC_ubsec_close(fd
);
1044 static int ubsec_rand_status(void)
1050 /* This stuff is needed if this ENGINE is being compiled into a self-contained
1051 * shared-library. */
1052 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
1053 static int bind_fn(ENGINE
*e
, const char *id
)
1055 if(id
&& (strcmp(id
, engine_ubsec_id
) != 0))
1061 IMPLEMENT_DYNAMIC_CHECK_FN()
1062 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn
)
1063 #endif /* OPENSSL_NO_DYNAMIC_ENGINE */
1065 #endif /* !OPENSSL_NO_HW_UBSEC */
1066 #endif /* !OPENSSL_NO_HW */