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[minix.git] / crypto / external / bsd / openssl / dist / engines / e_atalla.c
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1 /* crypto/engine/hw_atalla.c */
2 /*
3 * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project
4 * 2000.
5 */
6 /* ====================================================================
7 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
60 #include <stdio.h>
61 #include <string.h>
62 #include <openssl/crypto.h>
63 #include <openssl/buffer.h>
64 #include <openssl/dso.h>
65 #include <openssl/engine.h>
66 #ifndef OPENSSL_NO_RSA
67 # include <openssl/rsa.h>
68 #endif
69 #ifndef OPENSSL_NO_DSA
70 # include <openssl/dsa.h>
71 #endif
72 #ifndef OPENSSL_NO_DH
73 # include <openssl/dh.h>
74 #endif
75 #include <openssl/bn.h>
77 #ifndef OPENSSL_NO_HW
78 # ifndef OPENSSL_NO_HW_ATALLA
80 # ifdef FLAT_INC
81 # include "atalla.h"
82 # else
83 # include "vendor_defns/atalla.h"
84 # endif
86 # define ATALLA_LIB_NAME "atalla engine"
87 # include "e_atalla_err.c"
89 static int atalla_destroy(ENGINE *e);
90 static int atalla_init(ENGINE *e);
91 static int atalla_finish(ENGINE *e);
92 static int atalla_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void));
94 /* BIGNUM stuff */
95 static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
96 const BIGNUM *m, BN_CTX *ctx);
98 # ifndef OPENSSL_NO_RSA
99 /* RSA stuff */
100 static int atalla_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
101 BN_CTX *ctx);
102 /* This function is aliased to mod_exp (with the mont stuff dropped). */
103 static int atalla_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
104 const BIGNUM *m, BN_CTX *ctx,
105 BN_MONT_CTX *m_ctx);
106 # endif
108 # ifndef OPENSSL_NO_DSA
109 /* DSA stuff */
110 static int atalla_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
111 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
112 BN_CTX *ctx, BN_MONT_CTX *in_mont);
113 static int atalla_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
114 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
115 BN_MONT_CTX *m_ctx);
116 # endif
118 # ifndef OPENSSL_NO_DH
119 /* DH stuff */
120 /* This function is alised to mod_exp (with the DH and mont dropped). */
121 static int atalla_mod_exp_dh(const DH *dh, BIGNUM *r,
122 const BIGNUM *a, const BIGNUM *p,
123 const BIGNUM *m, BN_CTX *ctx,
124 BN_MONT_CTX *m_ctx);
125 # endif
127 /* The definitions for control commands specific to this engine */
128 # define ATALLA_CMD_SO_PATH ENGINE_CMD_BASE
129 static const ENGINE_CMD_DEFN atalla_cmd_defns[] = {
130 {ATALLA_CMD_SO_PATH,
131 "SO_PATH",
132 "Specifies the path to the 'atasi' shared library",
133 ENGINE_CMD_FLAG_STRING},
134 {0, NULL, NULL, 0}
137 # ifndef OPENSSL_NO_RSA
138 /* Our internal RSA_METHOD that we provide pointers to */
139 static RSA_METHOD atalla_rsa = {
140 "Atalla RSA method",
141 NULL,
142 NULL,
143 NULL,
144 NULL,
145 atalla_rsa_mod_exp,
146 atalla_mod_exp_mont,
147 NULL,
148 NULL,
150 NULL,
151 NULL,
152 NULL,
153 NULL
155 # endif
157 # ifndef OPENSSL_NO_DSA
158 /* Our internal DSA_METHOD that we provide pointers to */
159 static DSA_METHOD atalla_dsa = {
160 "Atalla DSA method",
161 NULL, /* dsa_do_sign */
162 NULL, /* dsa_sign_setup */
163 NULL, /* dsa_do_verify */
164 atalla_dsa_mod_exp, /* dsa_mod_exp */
165 atalla_mod_exp_dsa, /* bn_mod_exp */
166 NULL, /* init */
167 NULL, /* finish */
168 0, /* flags */
169 NULL, /* app_data */
170 NULL, /* dsa_paramgen */
171 NULL /* dsa_keygen */
173 # endif
175 # ifndef OPENSSL_NO_DH
176 /* Our internal DH_METHOD that we provide pointers to */
177 static DH_METHOD atalla_dh = {
178 "Atalla DH method",
179 NULL,
180 NULL,
181 atalla_mod_exp_dh,
182 NULL,
183 NULL,
185 NULL,
186 NULL
188 # endif
190 /* Constants used when creating the ENGINE */
191 static const char *engine_atalla_id = "atalla";
192 static const char *engine_atalla_name = "Atalla hardware engine support";
195 * This internal function is used by ENGINE_atalla() and possibly by the
196 * "dynamic" ENGINE support too
198 static int bind_helper(ENGINE *e)
200 # ifndef OPENSSL_NO_RSA
201 const RSA_METHOD *meth1;
202 # endif
203 # ifndef OPENSSL_NO_DSA
204 const DSA_METHOD *meth2;
205 # endif
206 # ifndef OPENSSL_NO_DH
207 const DH_METHOD *meth3;
208 # endif
209 if (!ENGINE_set_id(e, engine_atalla_id) ||
210 !ENGINE_set_name(e, engine_atalla_name) ||
211 # ifndef OPENSSL_NO_RSA
212 !ENGINE_set_RSA(e, &atalla_rsa) ||
213 # endif
214 # ifndef OPENSSL_NO_DSA
215 !ENGINE_set_DSA(e, &atalla_dsa) ||
216 # endif
217 # ifndef OPENSSL_NO_DH
218 !ENGINE_set_DH(e, &atalla_dh) ||
219 # endif
220 !ENGINE_set_destroy_function(e, atalla_destroy) ||
221 !ENGINE_set_init_function(e, atalla_init) ||
222 !ENGINE_set_finish_function(e, atalla_finish) ||
223 !ENGINE_set_ctrl_function(e, atalla_ctrl) ||
224 !ENGINE_set_cmd_defns(e, atalla_cmd_defns))
225 return 0;
227 # ifndef OPENSSL_NO_RSA
229 * We know that the "PKCS1_SSLeay()" functions hook properly to the
230 * atalla-specific mod_exp and mod_exp_crt so we use those functions. NB:
231 * We don't use ENGINE_openssl() or anything "more generic" because
232 * something like the RSAref code may not hook properly, and if you own
233 * one of these cards then you have the right to do RSA operations on it
234 * anyway!
236 meth1 = RSA_PKCS1_SSLeay();
237 atalla_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
238 atalla_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
239 atalla_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
240 atalla_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
241 # endif
243 # ifndef OPENSSL_NO_DSA
245 * Use the DSA_OpenSSL() method and just hook the mod_exp-ish bits.
247 meth2 = DSA_OpenSSL();
248 atalla_dsa.dsa_do_sign = meth2->dsa_do_sign;
249 atalla_dsa.dsa_sign_setup = meth2->dsa_sign_setup;
250 atalla_dsa.dsa_do_verify = meth2->dsa_do_verify;
251 # endif
253 # ifndef OPENSSL_NO_DH
254 /* Much the same for Diffie-Hellman */
255 meth3 = DH_OpenSSL();
256 atalla_dh.generate_key = meth3->generate_key;
257 atalla_dh.compute_key = meth3->compute_key;
258 # endif
260 /* Ensure the atalla error handling is set up */
261 ERR_load_ATALLA_strings();
262 return 1;
265 # ifdef OPENSSL_NO_DYNAMIC_ENGINE
266 static ENGINE *engine_atalla(void)
268 ENGINE *ret = ENGINE_new();
269 if (!ret)
270 return NULL;
271 if (!bind_helper(ret)) {
272 ENGINE_free(ret);
273 return NULL;
275 return ret;
278 void ENGINE_load_atalla(void)
280 /* Copied from eng_[openssl|dyn].c */
281 ENGINE *toadd = engine_atalla();
282 if (!toadd)
283 return;
284 ENGINE_add(toadd);
285 ENGINE_free(toadd);
286 ERR_clear_error();
288 # endif
291 * This is a process-global DSO handle used for loading and unloading the
292 * Atalla library. NB: This is only set (or unset) during an init() or
293 * finish() call (reference counts permitting) and they're operating with
294 * global locks, so this should be thread-safe implicitly.
296 static DSO *atalla_dso = NULL;
299 * These are the function pointers that are (un)set when the library has
300 * successfully (un)loaded.
302 static tfnASI_GetHardwareConfig *p_Atalla_GetHardwareConfig = NULL;
303 static tfnASI_RSAPrivateKeyOpFn *p_Atalla_RSAPrivateKeyOpFn = NULL;
304 static tfnASI_GetPerformanceStatistics *p_Atalla_GetPerformanceStatistics =
305 NULL;
308 * These are the static string constants for the DSO file name and the
309 * function symbol names to bind to. Regrettably, the DSO name on *nix
310 * appears to be "atasi.so" rather than something more consistent like
311 * "libatasi.so". At the time of writing, I'm not sure what the file name on
312 * win32 is but clearly native name translation is not possible (eg
313 * libatasi.so on *nix, and atasi.dll on win32). For the purposes of testing,
314 * I have created a symbollic link called "libatasi.so" so that we can use
315 * native name-translation - a better solution will be needed.
317 static const char *ATALLA_LIBNAME = NULL;
318 static const char *get_ATALLA_LIBNAME(void)
320 if (ATALLA_LIBNAME)
321 return ATALLA_LIBNAME;
322 return "atasi";
325 static void free_ATALLA_LIBNAME(void)
327 if (ATALLA_LIBNAME)
328 OPENSSL_free((void *)ATALLA_LIBNAME);
329 ATALLA_LIBNAME = NULL;
332 static long set_ATALLA_LIBNAME(const char *name)
334 free_ATALLA_LIBNAME();
335 return (((ATALLA_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
338 static const char *ATALLA_F1 = "ASI_GetHardwareConfig";
339 static const char *ATALLA_F2 = "ASI_RSAPrivateKeyOpFn";
340 static const char *ATALLA_F3 = "ASI_GetPerformanceStatistics";
342 /* Destructor (complements the "ENGINE_atalla()" constructor) */
343 static int atalla_destroy(ENGINE *e)
345 free_ATALLA_LIBNAME();
347 * Unload the atalla error strings so any error state including our
348 * functs or reasons won't lead to a segfault (they simply get displayed
349 * without corresponding string data because none will be found).
351 ERR_unload_ATALLA_strings();
352 return 1;
355 /* (de)initialisation functions. */
356 static int atalla_init(ENGINE *e)
358 tfnASI_GetHardwareConfig *p1;
359 tfnASI_RSAPrivateKeyOpFn *p2;
360 tfnASI_GetPerformanceStatistics *p3;
362 * Not sure of the origin of this magic value, but Ben's code had it and
363 * it seemed to have been working for a few people. :-)
365 unsigned int config_buf[1024];
367 if (atalla_dso != NULL) {
368 ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_ALREADY_LOADED);
369 goto err;
372 * Attempt to load libatasi.so/atasi.dll/whatever. Needs to be changed
373 * unfortunately because the Atalla drivers don't have standard library
374 * names that can be platform-translated well.
377 * TODO: Work out how to actually map to the names the Atalla drivers
378 * really use - for now a symbollic link needs to be created on the host
379 * system from libatasi.so to atasi.so on unix variants.
381 atalla_dso = DSO_load(NULL, get_ATALLA_LIBNAME(), NULL, 0);
382 if (atalla_dso == NULL) {
383 ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_NOT_LOADED);
384 goto err;
386 if (!
387 (p1 =
388 (tfnASI_GetHardwareConfig *) DSO_bind_func(atalla_dso, ATALLA_F1))
389 || !(p2 = (tfnASI_RSAPrivateKeyOpFn *) DSO_bind_func(atalla_dso, ATALLA_F2))
390 || !(p3 =
391 (tfnASI_GetPerformanceStatistics *) DSO_bind_func(atalla_dso,
392 ATALLA_F3))) {
393 ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_NOT_LOADED);
394 goto err;
396 /* Copy the pointers */
397 p_Atalla_GetHardwareConfig = p1;
398 p_Atalla_RSAPrivateKeyOpFn = p2;
399 p_Atalla_GetPerformanceStatistics = p3;
401 * Perform a basic test to see if there's actually any unit running.
403 if (p1(0L, config_buf) != 0) {
404 ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_UNIT_FAILURE);
405 goto err;
407 /* Everything's fine. */
408 return 1;
409 err:
410 if (atalla_dso)
411 DSO_free(atalla_dso);
412 atalla_dso = NULL;
413 p_Atalla_GetHardwareConfig = NULL;
414 p_Atalla_RSAPrivateKeyOpFn = NULL;
415 p_Atalla_GetPerformanceStatistics = NULL;
416 return 0;
419 static int atalla_finish(ENGINE *e)
421 free_ATALLA_LIBNAME();
422 if (atalla_dso == NULL) {
423 ATALLAerr(ATALLA_F_ATALLA_FINISH, ATALLA_R_NOT_LOADED);
424 return 0;
426 if (!DSO_free(atalla_dso)) {
427 ATALLAerr(ATALLA_F_ATALLA_FINISH, ATALLA_R_UNIT_FAILURE);
428 return 0;
430 atalla_dso = NULL;
431 p_Atalla_GetHardwareConfig = NULL;
432 p_Atalla_RSAPrivateKeyOpFn = NULL;
433 p_Atalla_GetPerformanceStatistics = NULL;
434 return 1;
437 static int atalla_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
439 int initialised = ((atalla_dso == NULL) ? 0 : 1);
440 switch (cmd) {
441 case ATALLA_CMD_SO_PATH:
442 if (p == NULL) {
443 ATALLAerr(ATALLA_F_ATALLA_CTRL, ERR_R_PASSED_NULL_PARAMETER);
444 return 0;
446 if (initialised) {
447 ATALLAerr(ATALLA_F_ATALLA_CTRL, ATALLA_R_ALREADY_LOADED);
448 return 0;
450 return set_ATALLA_LIBNAME((const char *)p);
451 default:
452 break;
454 ATALLAerr(ATALLA_F_ATALLA_CTRL, ATALLA_R_CTRL_COMMAND_NOT_IMPLEMENTED);
455 return 0;
458 static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
459 const BIGNUM *m, BN_CTX *ctx)
462 * I need somewhere to store temporary serialised values for use with the
463 * Atalla API calls. A neat cheat - I'll use BIGNUMs from the BN_CTX but
464 * access their arrays directly as byte arrays <grin>. This way I don't
465 * have to clean anything up.
467 BIGNUM *modulus;
468 BIGNUM *exponent;
469 BIGNUM *argument;
470 BIGNUM *result;
471 RSAPrivateKey keydata;
472 int to_return, numbytes;
474 modulus = exponent = argument = result = NULL;
475 to_return = 0; /* expect failure */
477 if (!atalla_dso) {
478 ATALLAerr(ATALLA_F_ATALLA_MOD_EXP, ATALLA_R_NOT_LOADED);
479 goto err;
481 /* Prepare the params */
482 BN_CTX_start(ctx);
483 modulus = BN_CTX_get(ctx);
484 exponent = BN_CTX_get(ctx);
485 argument = BN_CTX_get(ctx);
486 result = BN_CTX_get(ctx);
487 if (!result) {
488 ATALLAerr(ATALLA_F_ATALLA_MOD_EXP, ATALLA_R_BN_CTX_FULL);
489 goto err;
491 if (!bn_wexpand(modulus, m->top) || !bn_wexpand(exponent, m->top) ||
492 !bn_wexpand(argument, m->top) || !bn_wexpand(result, m->top)) {
493 ATALLAerr(ATALLA_F_ATALLA_MOD_EXP, ATALLA_R_BN_EXPAND_FAIL);
494 goto err;
496 /* Prepare the key-data */
497 memset(&keydata, 0, sizeof keydata);
498 numbytes = BN_num_bytes(m);
499 memset(exponent->d, 0, numbytes);
500 memset(modulus->d, 0, numbytes);
501 BN_bn2bin(p, (unsigned char *)exponent->d + numbytes - BN_num_bytes(p));
502 BN_bn2bin(m, (unsigned char *)modulus->d + numbytes - BN_num_bytes(m));
503 keydata.privateExponent.data = (unsigned char *)exponent->d;
504 keydata.privateExponent.len = numbytes;
505 keydata.modulus.data = (unsigned char *)modulus->d;
506 keydata.modulus.len = numbytes;
507 /* Prepare the argument */
508 memset(argument->d, 0, numbytes);
509 memset(result->d, 0, numbytes);
510 BN_bn2bin(a, (unsigned char *)argument->d + numbytes - BN_num_bytes(a));
511 /* Perform the operation */
512 if (p_Atalla_RSAPrivateKeyOpFn(&keydata, (unsigned char *)result->d,
513 (unsigned char *)argument->d,
514 keydata.modulus.len) != 0) {
515 ATALLAerr(ATALLA_F_ATALLA_MOD_EXP, ATALLA_R_REQUEST_FAILED);
516 goto err;
518 /* Convert the response */
519 BN_bin2bn((unsigned char *)result->d, numbytes, r);
520 to_return = 1;
521 err:
522 BN_CTX_end(ctx);
523 return to_return;
526 # ifndef OPENSSL_NO_RSA
527 static int atalla_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,
528 BN_CTX *ctx)
530 int to_return = 0;
532 if (!atalla_dso) {
533 ATALLAerr(ATALLA_F_ATALLA_RSA_MOD_EXP, ATALLA_R_NOT_LOADED);
534 goto err;
536 if (!rsa->d || !rsa->n) {
537 ATALLAerr(ATALLA_F_ATALLA_RSA_MOD_EXP,
538 ATALLA_R_MISSING_KEY_COMPONENTS);
539 goto err;
541 to_return = atalla_mod_exp(r0, I, rsa->d, rsa->n, ctx);
542 err:
543 return to_return;
545 # endif
547 # ifndef OPENSSL_NO_DSA
549 * This code was liberated and adapted from the commented-out code in
550 * dsa_ossl.c. Because of the unoptimised form of the Atalla acceleration (it
551 * doesn't have a CRT form for RSA), this function means that an Atalla
552 * system running with a DSA server certificate can handshake around 5 or 6
553 * times faster/more than an equivalent system running with RSA. Just check
554 * out the "signs" statistics from the RSA and DSA parts of "openssl speed
555 * -engine atalla dsa1024 rsa1024".
557 static int atalla_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
558 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
559 BN_CTX *ctx, BN_MONT_CTX *in_mont)
561 BIGNUM t;
562 int to_return = 0;
564 BN_init(&t);
565 /* let rr = a1 ^ p1 mod m */
566 if (!atalla_mod_exp(rr, a1, p1, m, ctx))
567 goto end;
568 /* let t = a2 ^ p2 mod m */
569 if (!atalla_mod_exp(&t, a2, p2, m, ctx))
570 goto end;
571 /* let rr = rr * t mod m */
572 if (!BN_mod_mul(rr, rr, &t, m, ctx))
573 goto end;
574 to_return = 1;
575 end:
576 BN_free(&t);
577 return to_return;
580 static int atalla_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
581 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
582 BN_MONT_CTX *m_ctx)
584 return atalla_mod_exp(r, a, p, m, ctx);
586 # endif
588 # ifndef OPENSSL_NO_RSA
589 /* This function is aliased to mod_exp (with the mont stuff dropped). */
590 static int atalla_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
591 const BIGNUM *m, BN_CTX *ctx,
592 BN_MONT_CTX *m_ctx)
594 return atalla_mod_exp(r, a, p, m, ctx);
596 # endif
598 # ifndef OPENSSL_NO_DH
599 /* This function is aliased to mod_exp (with the dh and mont dropped). */
600 static int atalla_mod_exp_dh(const DH *dh, BIGNUM *r,
601 const BIGNUM *a, const BIGNUM *p,
602 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
604 return atalla_mod_exp(r, a, p, m, ctx);
606 # endif
609 * This stuff is needed if this ENGINE is being compiled into a
610 * self-contained shared-library.
612 # ifndef OPENSSL_NO_DYNAMIC_ENGINE
613 static int bind_fn(ENGINE *e, const char *id)
615 if (id && (strcmp(id, engine_atalla_id) != 0))
616 return 0;
617 if (!bind_helper(e))
618 return 0;
619 return 1;
622 IMPLEMENT_DYNAMIC_CHECK_FN()
623 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
624 # endif /* OPENSSL_NO_DYNAMIC_ENGINE */
625 # endif /* !OPENSSL_NO_HW_ATALLA */
626 #endif /* !OPENSSL_NO_HW */