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 #ifndef ENGINE_DYNAMIC_SUPPORT
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();
270 /* This is a process-global DSO handle used for loading and unloading
271 * the UBSEC library. NB: This is only set (or unset) during an
272 * init() or finish() call (reference counts permitting) and they're
273 * operating with global locks, so this should be thread-safe
276 static DSO
*ubsec_dso
= NULL
;
278 /* These are the function pointers that are (un)set when the library has
279 * successfully (un)loaded. */
281 static t_UBSEC_ubsec_bytes_to_bits
*p_UBSEC_ubsec_bytes_to_bits
= NULL
;
282 static t_UBSEC_ubsec_bits_to_bytes
*p_UBSEC_ubsec_bits_to_bytes
= NULL
;
283 static t_UBSEC_ubsec_open
*p_UBSEC_ubsec_open
= NULL
;
284 static t_UBSEC_ubsec_close
*p_UBSEC_ubsec_close
= NULL
;
285 #ifndef OPENSSL_NO_DH
286 static t_UBSEC_diffie_hellman_generate_ioctl
287 *p_UBSEC_diffie_hellman_generate_ioctl
= NULL
;
288 static t_UBSEC_diffie_hellman_agree_ioctl
*p_UBSEC_diffie_hellman_agree_ioctl
= NULL
;
290 /* #ifndef OPENSSL_NO_RSA */
291 static t_UBSEC_rsa_mod_exp_ioctl
*p_UBSEC_rsa_mod_exp_ioctl
= NULL
;
292 static t_UBSEC_rsa_mod_exp_crt_ioctl
*p_UBSEC_rsa_mod_exp_crt_ioctl
= NULL
;
294 #ifndef OPENSSL_NO_DSA
295 static t_UBSEC_dsa_sign_ioctl
*p_UBSEC_dsa_sign_ioctl
= NULL
;
296 static t_UBSEC_dsa_verify_ioctl
*p_UBSEC_dsa_verify_ioctl
= NULL
;
298 static t_UBSEC_math_accelerate_ioctl
*p_UBSEC_math_accelerate_ioctl
= NULL
;
299 static t_UBSEC_rng_ioctl
*p_UBSEC_rng_ioctl
= NULL
;
300 static t_UBSEC_max_key_len_ioctl
*p_UBSEC_max_key_len_ioctl
= NULL
;
302 static int max_key_len
= 1024; /* ??? */
305 * These are the static string constants for the DSO file name and the function
306 * symbol names to bind to.
309 static const char *UBSEC_LIBNAME
= NULL
;
310 static const char *get_UBSEC_LIBNAME(void)
313 return UBSEC_LIBNAME
;
316 static void free_UBSEC_LIBNAME(void)
319 OPENSSL_free((void*)UBSEC_LIBNAME
);
320 UBSEC_LIBNAME
= NULL
;
322 static long set_UBSEC_LIBNAME(const char *name
)
324 free_UBSEC_LIBNAME();
325 return (((UBSEC_LIBNAME
= BUF_strdup(name
)) != NULL
) ? 1 : 0);
327 static const char *UBSEC_F1
= "ubsec_bytes_to_bits";
328 static const char *UBSEC_F2
= "ubsec_bits_to_bytes";
329 static const char *UBSEC_F3
= "ubsec_open";
330 static const char *UBSEC_F4
= "ubsec_close";
331 #ifndef OPENSSL_NO_DH
332 static const char *UBSEC_F5
= "diffie_hellman_generate_ioctl";
333 static const char *UBSEC_F6
= "diffie_hellman_agree_ioctl";
335 /* #ifndef OPENSSL_NO_RSA */
336 static const char *UBSEC_F7
= "rsa_mod_exp_ioctl";
337 static const char *UBSEC_F8
= "rsa_mod_exp_crt_ioctl";
339 #ifndef OPENSSL_NO_DSA
340 static const char *UBSEC_F9
= "dsa_sign_ioctl";
341 static const char *UBSEC_F10
= "dsa_verify_ioctl";
343 static const char *UBSEC_F11
= "math_accelerate_ioctl";
344 static const char *UBSEC_F12
= "rng_ioctl";
345 static const char *UBSEC_F13
= "ubsec_max_key_len_ioctl";
347 /* Destructor (complements the "ENGINE_ubsec()" constructor) */
348 static int ubsec_destroy(ENGINE
*e
)
350 free_UBSEC_LIBNAME();
351 ERR_unload_UBSEC_strings();
355 /* (de)initialisation functions. */
356 static int ubsec_init(ENGINE
*e
)
358 t_UBSEC_ubsec_bytes_to_bits
*p1
;
359 t_UBSEC_ubsec_bits_to_bytes
*p2
;
360 t_UBSEC_ubsec_open
*p3
;
361 t_UBSEC_ubsec_close
*p4
;
362 #ifndef OPENSSL_NO_DH
363 t_UBSEC_diffie_hellman_generate_ioctl
*p5
;
364 t_UBSEC_diffie_hellman_agree_ioctl
*p6
;
366 /* #ifndef OPENSSL_NO_RSA */
367 t_UBSEC_rsa_mod_exp_ioctl
*p7
;
368 t_UBSEC_rsa_mod_exp_crt_ioctl
*p8
;
370 #ifndef OPENSSL_NO_DSA
371 t_UBSEC_dsa_sign_ioctl
*p9
;
372 t_UBSEC_dsa_verify_ioctl
*p10
;
374 t_UBSEC_math_accelerate_ioctl
*p11
;
375 t_UBSEC_rng_ioctl
*p12
;
376 t_UBSEC_max_key_len_ioctl
*p13
;
379 if(ubsec_dso
!= NULL
)
381 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_ALREADY_LOADED
);
385 * Attempt to load libubsec.so/ubsec.dll/whatever.
387 ubsec_dso
= DSO_load(NULL
, get_UBSEC_LIBNAME(), NULL
, 0);
388 if(ubsec_dso
== NULL
)
390 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_DSO_FAILURE
);
395 !(p1
= (t_UBSEC_ubsec_bytes_to_bits
*) DSO_bind_func(ubsec_dso
, UBSEC_F1
)) ||
396 !(p2
= (t_UBSEC_ubsec_bits_to_bytes
*) DSO_bind_func(ubsec_dso
, UBSEC_F2
)) ||
397 !(p3
= (t_UBSEC_ubsec_open
*) DSO_bind_func(ubsec_dso
, UBSEC_F3
)) ||
398 !(p4
= (t_UBSEC_ubsec_close
*) DSO_bind_func(ubsec_dso
, UBSEC_F4
)) ||
399 #ifndef OPENSSL_NO_DH
400 !(p5
= (t_UBSEC_diffie_hellman_generate_ioctl
*)
401 DSO_bind_func(ubsec_dso
, UBSEC_F5
)) ||
402 !(p6
= (t_UBSEC_diffie_hellman_agree_ioctl
*)
403 DSO_bind_func(ubsec_dso
, UBSEC_F6
)) ||
405 /* #ifndef OPENSSL_NO_RSA */
406 !(p7
= (t_UBSEC_rsa_mod_exp_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F7
)) ||
407 !(p8
= (t_UBSEC_rsa_mod_exp_crt_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F8
)) ||
409 #ifndef OPENSSL_NO_DSA
410 !(p9
= (t_UBSEC_dsa_sign_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F9
)) ||
411 !(p10
= (t_UBSEC_dsa_verify_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F10
)) ||
413 !(p11
= (t_UBSEC_math_accelerate_ioctl
*)
414 DSO_bind_func(ubsec_dso
, UBSEC_F11
)) ||
415 !(p12
= (t_UBSEC_rng_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F12
)) ||
416 !(p13
= (t_UBSEC_max_key_len_ioctl
*) DSO_bind_func(ubsec_dso
, UBSEC_F13
)))
418 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_DSO_FAILURE
);
422 /* Copy the pointers */
423 p_UBSEC_ubsec_bytes_to_bits
= p1
;
424 p_UBSEC_ubsec_bits_to_bytes
= p2
;
425 p_UBSEC_ubsec_open
= p3
;
426 p_UBSEC_ubsec_close
= p4
;
427 #ifndef OPENSSL_NO_DH
428 p_UBSEC_diffie_hellman_generate_ioctl
= p5
;
429 p_UBSEC_diffie_hellman_agree_ioctl
= p6
;
431 #ifndef OPENSSL_NO_RSA
432 p_UBSEC_rsa_mod_exp_ioctl
= p7
;
433 p_UBSEC_rsa_mod_exp_crt_ioctl
= p8
;
435 #ifndef OPENSSL_NO_DSA
436 p_UBSEC_dsa_sign_ioctl
= p9
;
437 p_UBSEC_dsa_verify_ioctl
= p10
;
439 p_UBSEC_math_accelerate_ioctl
= p11
;
440 p_UBSEC_rng_ioctl
= p12
;
441 p_UBSEC_max_key_len_ioctl
= p13
;
443 /* Perform an open to see if there's actually any unit running. */
444 if (((fd
= p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME
)) > 0) && (p_UBSEC_max_key_len_ioctl(fd
, &max_key_len
) == 0))
446 p_UBSEC_ubsec_close(fd
);
451 UBSECerr(UBSEC_F_UBSEC_INIT
, UBSEC_R_UNIT_FAILURE
);
457 p_UBSEC_ubsec_bytes_to_bits
= NULL
;
458 p_UBSEC_ubsec_bits_to_bytes
= NULL
;
459 p_UBSEC_ubsec_open
= NULL
;
460 p_UBSEC_ubsec_close
= NULL
;
461 #ifndef OPENSSL_NO_DH
462 p_UBSEC_diffie_hellman_generate_ioctl
= NULL
;
463 p_UBSEC_diffie_hellman_agree_ioctl
= NULL
;
465 #ifndef OPENSSL_NO_RSA
466 p_UBSEC_rsa_mod_exp_ioctl
= NULL
;
467 p_UBSEC_rsa_mod_exp_crt_ioctl
= NULL
;
469 #ifndef OPENSSL_NO_DSA
470 p_UBSEC_dsa_sign_ioctl
= NULL
;
471 p_UBSEC_dsa_verify_ioctl
= NULL
;
473 p_UBSEC_math_accelerate_ioctl
= NULL
;
474 p_UBSEC_rng_ioctl
= NULL
;
475 p_UBSEC_max_key_len_ioctl
= NULL
;
480 static int ubsec_finish(ENGINE
*e
)
482 free_UBSEC_LIBNAME();
483 if(ubsec_dso
== NULL
)
485 UBSECerr(UBSEC_F_UBSEC_FINISH
, UBSEC_R_NOT_LOADED
);
488 if(!DSO_free(ubsec_dso
))
490 UBSECerr(UBSEC_F_UBSEC_FINISH
, UBSEC_R_DSO_FAILURE
);
494 p_UBSEC_ubsec_bytes_to_bits
= NULL
;
495 p_UBSEC_ubsec_bits_to_bytes
= NULL
;
496 p_UBSEC_ubsec_open
= NULL
;
497 p_UBSEC_ubsec_close
= NULL
;
498 #ifndef OPENSSL_NO_DH
499 p_UBSEC_diffie_hellman_generate_ioctl
= NULL
;
500 p_UBSEC_diffie_hellman_agree_ioctl
= NULL
;
502 #ifndef OPENSSL_NO_RSA
503 p_UBSEC_rsa_mod_exp_ioctl
= NULL
;
504 p_UBSEC_rsa_mod_exp_crt_ioctl
= NULL
;
506 #ifndef OPENSSL_NO_DSA
507 p_UBSEC_dsa_sign_ioctl
= NULL
;
508 p_UBSEC_dsa_verify_ioctl
= NULL
;
510 p_UBSEC_math_accelerate_ioctl
= NULL
;
511 p_UBSEC_rng_ioctl
= NULL
;
512 p_UBSEC_max_key_len_ioctl
= NULL
;
516 static int ubsec_ctrl(ENGINE
*e
, int cmd
, long i
, void *p
, void (*f
)())
518 int initialised
= ((ubsec_dso
== NULL
) ? 0 : 1);
521 case UBSEC_CMD_SO_PATH
:
524 UBSECerr(UBSEC_F_UBSEC_CTRL
,ERR_R_PASSED_NULL_PARAMETER
);
529 UBSECerr(UBSEC_F_UBSEC_CTRL
,UBSEC_R_ALREADY_LOADED
);
532 return set_UBSEC_LIBNAME((const char *)p
);
536 UBSECerr(UBSEC_F_UBSEC_CTRL
,UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED
);
540 static int ubsec_mod_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
541 const BIGNUM
*m
, BN_CTX
*ctx
)
546 if(ubsec_dso
== NULL
)
548 UBSECerr(UBSEC_F_UBSEC_MOD_EXP
, UBSEC_R_NOT_LOADED
);
552 /* Check if hardware can't handle this argument. */
553 y_len
= BN_num_bits(m
);
554 if (y_len
> max_key_len
) {
555 UBSECerr(UBSEC_F_UBSEC_MOD_EXP
, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL
);
556 return BN_mod_exp(r
, a
, p
, m
, ctx
);
559 if(!bn_wexpand(r
, m
->top
))
561 UBSECerr(UBSEC_F_UBSEC_MOD_EXP
, UBSEC_R_BN_EXPAND_FAIL
);
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 #ifdef ENGINE_DYNAMIC_SUPPORT
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 /* ENGINE_DYNAMIC_SUPPORT */
1059 #endif /* !OPENSSL_NO_HW_UBSEC */
1060 #endif /* !OPENSSL_NO_HW */