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-rw-r--r--src/lib/libcrypto/engine/hw_atalla.c595
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diff --git a/src/lib/libcrypto/engine/hw_atalla.c b/src/lib/libcrypto/engine/hw_atalla.c
deleted file mode 100644
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1/* crypto/engine/hw_atalla.c */
2/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <stdio.h>
60#include <openssl/crypto.h>
61#include "cryptlib.h"
62#include <openssl/dso.h>
63#include <openssl/engine.h>
64
65#ifndef OPENSSL_NO_HW
66#ifndef OPENSSL_NO_HW_ATALLA
67
68#ifdef FLAT_INC
69#include "atalla.h"
70#else
71#include "vendor_defns/atalla.h"
72#endif
73
74#define ATALLA_LIB_NAME "atalla engine"
75#include "hw_atalla_err.c"
76
77static int atalla_destroy(ENGINE *e);
78static int atalla_init(ENGINE *e);
79static int atalla_finish(ENGINE *e);
80static int atalla_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
81
82/* BIGNUM stuff */
83static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
84 const BIGNUM *m, BN_CTX *ctx);
85
86#ifndef OPENSSL_NO_RSA
87/* RSA stuff */
88static int atalla_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
89#endif
90/* This function is aliased to mod_exp (with the mont stuff dropped). */
91static int atalla_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
92 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
93
94#ifndef OPENSSL_NO_DSA
95/* DSA stuff */
96static int atalla_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
97 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
98 BN_CTX *ctx, BN_MONT_CTX *in_mont);
99static int atalla_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
100 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
101 BN_MONT_CTX *m_ctx);
102#endif
103
104#ifndef OPENSSL_NO_DH
105/* DH stuff */
106/* This function is alised to mod_exp (with the DH and mont dropped). */
107static int atalla_mod_exp_dh(const DH *dh, BIGNUM *r,
108 const BIGNUM *a, const BIGNUM *p,
109 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
110#endif
111
112/* The definitions for control commands specific to this engine */
113#define ATALLA_CMD_SO_PATH ENGINE_CMD_BASE
114static const ENGINE_CMD_DEFN atalla_cmd_defns[] = {
115 {ATALLA_CMD_SO_PATH,
116 "SO_PATH",
117 "Specifies the path to the 'atasi' shared library",
118 ENGINE_CMD_FLAG_STRING},
119 {0, NULL, NULL, 0}
120 };
121
122#ifndef OPENSSL_NO_RSA
123/* Our internal RSA_METHOD that we provide pointers to */
124static RSA_METHOD atalla_rsa =
125 {
126 "Atalla RSA method",
127 NULL,
128 NULL,
129 NULL,
130 NULL,
131 atalla_rsa_mod_exp,
132 atalla_mod_exp_mont,
133 NULL,
134 NULL,
135 0,
136 NULL,
137 NULL,
138 NULL
139 };
140#endif
141
142#ifndef OPENSSL_NO_DSA
143/* Our internal DSA_METHOD that we provide pointers to */
144static DSA_METHOD atalla_dsa =
145 {
146 "Atalla DSA method",
147 NULL, /* dsa_do_sign */
148 NULL, /* dsa_sign_setup */
149 NULL, /* dsa_do_verify */
150 atalla_dsa_mod_exp, /* dsa_mod_exp */
151 atalla_mod_exp_dsa, /* bn_mod_exp */
152 NULL, /* init */
153 NULL, /* finish */
154 0, /* flags */
155 NULL /* app_data */
156 };
157#endif
158
159#ifndef OPENSSL_NO_DH
160/* Our internal DH_METHOD that we provide pointers to */
161static DH_METHOD atalla_dh =
162 {
163 "Atalla DH method",
164 NULL,
165 NULL,
166 atalla_mod_exp_dh,
167 NULL,
168 NULL,
169 0,
170 NULL
171 };
172#endif
173
174/* Constants used when creating the ENGINE */
175static const char *engine_atalla_id = "atalla";
176static const char *engine_atalla_name = "Atalla hardware engine support";
177
178/* This internal function is used by ENGINE_atalla() and possibly by the
179 * "dynamic" ENGINE support too */
180static int bind_helper(ENGINE *e)
181 {
182#ifndef OPENSSL_NO_RSA
183 const RSA_METHOD *meth1;
184#endif
185#ifndef OPENSSL_NO_DSA
186 const DSA_METHOD *meth2;
187#endif
188#ifndef OPENSSL_NO_DH
189 const DH_METHOD *meth3;
190#endif
191 if(!ENGINE_set_id(e, engine_atalla_id) ||
192 !ENGINE_set_name(e, engine_atalla_name) ||
193#ifndef OPENSSL_NO_RSA
194 !ENGINE_set_RSA(e, &atalla_rsa) ||
195#endif
196#ifndef OPENSSL_NO_DSA
197 !ENGINE_set_DSA(e, &atalla_dsa) ||
198#endif
199#ifndef OPENSSL_NO_DH
200 !ENGINE_set_DH(e, &atalla_dh) ||
201#endif
202 !ENGINE_set_destroy_function(e, atalla_destroy) ||
203 !ENGINE_set_init_function(e, atalla_init) ||
204 !ENGINE_set_finish_function(e, atalla_finish) ||
205 !ENGINE_set_ctrl_function(e, atalla_ctrl) ||
206 !ENGINE_set_cmd_defns(e, atalla_cmd_defns))
207 return 0;
208
209#ifndef OPENSSL_NO_RSA
210 /* We know that the "PKCS1_SSLeay()" functions hook properly
211 * to the atalla-specific mod_exp and mod_exp_crt so we use
212 * those functions. NB: We don't use ENGINE_openssl() or
213 * anything "more generic" because something like the RSAref
214 * code may not hook properly, and if you own one of these
215 * cards then you have the right to do RSA operations on it
216 * anyway! */
217 meth1 = RSA_PKCS1_SSLeay();
218 atalla_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
219 atalla_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
220 atalla_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
221 atalla_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
222#endif
223
224#ifndef OPENSSL_NO_DSA
225 /* Use the DSA_OpenSSL() method and just hook the mod_exp-ish
226 * bits. */
227 meth2 = DSA_OpenSSL();
228 atalla_dsa.dsa_do_sign = meth2->dsa_do_sign;
229 atalla_dsa.dsa_sign_setup = meth2->dsa_sign_setup;
230 atalla_dsa.dsa_do_verify = meth2->dsa_do_verify;
231#endif
232
233#ifndef OPENSSL_NO_DH
234 /* Much the same for Diffie-Hellman */
235 meth3 = DH_OpenSSL();
236 atalla_dh.generate_key = meth3->generate_key;
237 atalla_dh.compute_key = meth3->compute_key;
238#endif
239
240 /* Ensure the atalla error handling is set up */
241 ERR_load_ATALLA_strings();
242 return 1;
243 }
244
245#ifndef ENGINE_DYNAMIC_SUPPORT
246static ENGINE *engine_atalla(void)
247 {
248 ENGINE *ret = ENGINE_new();
249 if(!ret)
250 return NULL;
251 if(!bind_helper(ret))
252 {
253 ENGINE_free(ret);
254 return NULL;
255 }
256 return ret;
257 }
258
259void ENGINE_load_atalla(void)
260 {
261 /* Copied from eng_[openssl|dyn].c */
262 ENGINE *toadd = engine_atalla();
263 if(!toadd) return;
264 ENGINE_add(toadd);
265 ENGINE_free(toadd);
266 ERR_clear_error();
267 }
268#endif
269
270/* This is a process-global DSO handle used for loading and unloading
271 * the Atalla 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
274 * implicitly. */
275static DSO *atalla_dso = NULL;
276
277/* These are the function pointers that are (un)set when the library has
278 * successfully (un)loaded. */
279static tfnASI_GetHardwareConfig *p_Atalla_GetHardwareConfig = NULL;
280static tfnASI_RSAPrivateKeyOpFn *p_Atalla_RSAPrivateKeyOpFn = NULL;
281static tfnASI_GetPerformanceStatistics *p_Atalla_GetPerformanceStatistics = NULL;
282
283/* These are the static string constants for the DSO file name and the function
284 * symbol names to bind to. Regrettably, the DSO name on *nix appears to be
285 * "atasi.so" rather than something more consistent like "libatasi.so". At the
286 * time of writing, I'm not sure what the file name on win32 is but clearly
287 * native name translation is not possible (eg libatasi.so on *nix, and
288 * atasi.dll on win32). For the purposes of testing, I have created a symbollic
289 * link called "libatasi.so" so that we can use native name-translation - a
290 * better solution will be needed. */
291static const char *ATALLA_LIBNAME = NULL;
292static const char *get_ATALLA_LIBNAME(void)
293 {
294 if(ATALLA_LIBNAME)
295 return ATALLA_LIBNAME;
296 return "atasi";
297 }
298static void free_ATALLA_LIBNAME(void)
299 {
300 if(ATALLA_LIBNAME)
301 OPENSSL_free((void*)ATALLA_LIBNAME);
302 ATALLA_LIBNAME = NULL;
303 }
304static long set_ATALLA_LIBNAME(const char *name)
305 {
306 free_ATALLA_LIBNAME();
307 return (((ATALLA_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
308 }
309static const char *ATALLA_F1 = "ASI_GetHardwareConfig";
310static const char *ATALLA_F2 = "ASI_RSAPrivateKeyOpFn";
311static const char *ATALLA_F3 = "ASI_GetPerformanceStatistics";
312
313/* Destructor (complements the "ENGINE_atalla()" constructor) */
314static int atalla_destroy(ENGINE *e)
315 {
316 free_ATALLA_LIBNAME();
317 /* Unload the atalla error strings so any error state including our
318 * functs or reasons won't lead to a segfault (they simply get displayed
319 * without corresponding string data because none will be found). */
320 ERR_unload_ATALLA_strings();
321 return 1;
322 }
323
324/* (de)initialisation functions. */
325static int atalla_init(ENGINE *e)
326 {
327 tfnASI_GetHardwareConfig *p1;
328 tfnASI_RSAPrivateKeyOpFn *p2;
329 tfnASI_GetPerformanceStatistics *p3;
330 /* Not sure of the origin of this magic value, but Ben's code had it
331 * and it seemed to have been working for a few people. :-) */
332 unsigned int config_buf[1024];
333
334 if(atalla_dso != NULL)
335 {
336 ATALLAerr(ATALLA_F_ATALLA_INIT,ATALLA_R_ALREADY_LOADED);
337 goto err;
338 }
339 /* Attempt to load libatasi.so/atasi.dll/whatever. Needs to be
340 * changed unfortunately because the Atalla drivers don't have
341 * standard library names that can be platform-translated well. */
342 /* TODO: Work out how to actually map to the names the Atalla
343 * drivers really use - for now a symbollic link needs to be
344 * created on the host system from libatasi.so to atasi.so on
345 * unix variants. */
346 atalla_dso = DSO_load(NULL, get_ATALLA_LIBNAME(), NULL, 0);
347 if(atalla_dso == NULL)
348 {
349 ATALLAerr(ATALLA_F_ATALLA_INIT,ATALLA_R_NOT_LOADED);
350 goto err;
351 }
352 if(!(p1 = (tfnASI_GetHardwareConfig *)DSO_bind_func(
353 atalla_dso, ATALLA_F1)) ||
354 !(p2 = (tfnASI_RSAPrivateKeyOpFn *)DSO_bind_func(
355 atalla_dso, ATALLA_F2)) ||
356 !(p3 = (tfnASI_GetPerformanceStatistics *)DSO_bind_func(
357 atalla_dso, ATALLA_F3)))
358 {
359 ATALLAerr(ATALLA_F_ATALLA_INIT,ATALLA_R_NOT_LOADED);
360 goto err;
361 }
362 /* Copy the pointers */
363 p_Atalla_GetHardwareConfig = p1;
364 p_Atalla_RSAPrivateKeyOpFn = p2;
365 p_Atalla_GetPerformanceStatistics = p3;
366 /* Perform a basic test to see if there's actually any unit
367 * running. */
368 if(p1(0L, config_buf) != 0)
369 {
370 ATALLAerr(ATALLA_F_ATALLA_INIT,ATALLA_R_UNIT_FAILURE);
371 goto err;
372 }
373 /* Everything's fine. */
374 return 1;
375err:
376 if(atalla_dso)
377 DSO_free(atalla_dso);
378 atalla_dso = NULL;
379 p_Atalla_GetHardwareConfig = NULL;
380 p_Atalla_RSAPrivateKeyOpFn = NULL;
381 p_Atalla_GetPerformanceStatistics = NULL;
382 return 0;
383 }
384
385static int atalla_finish(ENGINE *e)
386 {
387 free_ATALLA_LIBNAME();
388 if(atalla_dso == NULL)
389 {
390 ATALLAerr(ATALLA_F_ATALLA_FINISH,ATALLA_R_NOT_LOADED);
391 return 0;
392 }
393 if(!DSO_free(atalla_dso))
394 {
395 ATALLAerr(ATALLA_F_ATALLA_FINISH,ATALLA_R_UNIT_FAILURE);
396 return 0;
397 }
398 atalla_dso = NULL;
399 p_Atalla_GetHardwareConfig = NULL;
400 p_Atalla_RSAPrivateKeyOpFn = NULL;
401 p_Atalla_GetPerformanceStatistics = NULL;
402 return 1;
403 }
404
405static int atalla_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
406 {
407 int initialised = ((atalla_dso == NULL) ? 0 : 1);
408 switch(cmd)
409 {
410 case ATALLA_CMD_SO_PATH:
411 if(p == NULL)
412 {
413 ATALLAerr(ATALLA_F_ATALLA_CTRL,ERR_R_PASSED_NULL_PARAMETER);
414 return 0;
415 }
416 if(initialised)
417 {
418 ATALLAerr(ATALLA_F_ATALLA_CTRL,ATALLA_R_ALREADY_LOADED);
419 return 0;
420 }
421 return set_ATALLA_LIBNAME((const char *)p);
422 default:
423 break;
424 }
425 ATALLAerr(ATALLA_F_ATALLA_CTRL,ATALLA_R_CTRL_COMMAND_NOT_IMPLEMENTED);
426 return 0;
427 }
428
429static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
430 const BIGNUM *m, BN_CTX *ctx)
431 {
432 /* I need somewhere to store temporary serialised values for
433 * use with the Atalla API calls. A neat cheat - I'll use
434 * BIGNUMs from the BN_CTX but access their arrays directly as
435 * byte arrays <grin>. This way I don't have to clean anything
436 * up. */
437 BIGNUM *modulus;
438 BIGNUM *exponent;
439 BIGNUM *argument;
440 BIGNUM *result;
441 RSAPrivateKey keydata;
442 int to_return, numbytes;
443
444 modulus = exponent = argument = result = NULL;
445 to_return = 0; /* expect failure */
446
447 if(!atalla_dso)
448 {
449 ATALLAerr(ATALLA_F_ATALLA_MOD_EXP,ATALLA_R_NOT_LOADED);
450 goto err;
451 }
452 /* Prepare the params */
453 BN_CTX_start(ctx);
454 modulus = BN_CTX_get(ctx);
455 exponent = BN_CTX_get(ctx);
456 argument = BN_CTX_get(ctx);
457 result = BN_CTX_get(ctx);
458 if (!result)
459 {
460 ATALLAerr(ATALLA_F_ATALLA_MOD_EXP,ATALLA_R_BN_CTX_FULL);
461 goto err;
462 }
463 if(!bn_wexpand(modulus, m->top) || !bn_wexpand(exponent, m->top) ||
464 !bn_wexpand(argument, m->top) || !bn_wexpand(result, m->top))
465 {
466 ATALLAerr(ATALLA_F_ATALLA_MOD_EXP,ATALLA_R_BN_EXPAND_FAIL);
467 goto err;
468 }
469 /* Prepare the key-data */
470 memset(&keydata, 0,sizeof keydata);
471 numbytes = BN_num_bytes(m);
472 memset(exponent->d, 0, numbytes);
473 memset(modulus->d, 0, numbytes);
474 BN_bn2bin(p, (unsigned char *)exponent->d + numbytes - BN_num_bytes(p));
475 BN_bn2bin(m, (unsigned char *)modulus->d + numbytes - BN_num_bytes(m));
476 keydata.privateExponent.data = (unsigned char *)exponent->d;
477 keydata.privateExponent.len = numbytes;
478 keydata.modulus.data = (unsigned char *)modulus->d;
479 keydata.modulus.len = numbytes;
480 /* Prepare the argument */
481 memset(argument->d, 0, numbytes);
482 memset(result->d, 0, numbytes);
483 BN_bn2bin(a, (unsigned char *)argument->d + numbytes - BN_num_bytes(a));
484 /* Perform the operation */
485 if(p_Atalla_RSAPrivateKeyOpFn(&keydata, (unsigned char *)result->d,
486 (unsigned char *)argument->d,
487 keydata.modulus.len) != 0)
488 {
489 ATALLAerr(ATALLA_F_ATALLA_MOD_EXP,ATALLA_R_REQUEST_FAILED);
490 goto err;
491 }
492 /* Convert the response */
493 BN_bin2bn((unsigned char *)result->d, numbytes, r);
494 to_return = 1;
495err:
496 BN_CTX_end(ctx);
497 return to_return;
498 }
499
500#ifndef OPENSSL_NO_RSA
501static int atalla_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
502 {
503 BN_CTX *ctx = NULL;
504 int to_return = 0;
505
506 if(!atalla_dso)
507 {
508 ATALLAerr(ATALLA_F_ATALLA_RSA_MOD_EXP,ATALLA_R_NOT_LOADED);
509 goto err;
510 }
511 if((ctx = BN_CTX_new()) == NULL)
512 goto err;
513 if(!rsa->d || !rsa->n)
514 {
515 ATALLAerr(ATALLA_F_ATALLA_RSA_MOD_EXP,ATALLA_R_MISSING_KEY_COMPONENTS);
516 goto err;
517 }
518 to_return = atalla_mod_exp(r0, I, rsa->d, rsa->n, ctx);
519err:
520 if(ctx)
521 BN_CTX_free(ctx);
522 return to_return;
523 }
524#endif
525
526#ifndef OPENSSL_NO_DSA
527/* This code was liberated and adapted from the commented-out code in
528 * dsa_ossl.c. Because of the unoptimised form of the Atalla acceleration
529 * (it doesn't have a CRT form for RSA), this function means that an
530 * Atalla system running with a DSA server certificate can handshake
531 * around 5 or 6 times faster/more than an equivalent system running with
532 * RSA. Just check out the "signs" statistics from the RSA and DSA parts
533 * of "openssl speed -engine atalla dsa1024 rsa1024". */
534static int atalla_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
535 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
536 BN_CTX *ctx, BN_MONT_CTX *in_mont)
537 {
538 BIGNUM t;
539 int to_return = 0;
540
541 BN_init(&t);
542 /* let rr = a1 ^ p1 mod m */
543 if (!atalla_mod_exp(rr,a1,p1,m,ctx)) goto end;
544 /* let t = a2 ^ p2 mod m */
545 if (!atalla_mod_exp(&t,a2,p2,m,ctx)) goto end;
546 /* let rr = rr * t mod m */
547 if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
548 to_return = 1;
549end:
550 BN_free(&t);
551 return to_return;
552 }
553
554static int atalla_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
555 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
556 BN_MONT_CTX *m_ctx)
557 {
558 return atalla_mod_exp(r, a, p, m, ctx);
559 }
560#endif
561
562/* This function is aliased to mod_exp (with the mont stuff dropped). */
563static int atalla_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
564 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
565 {
566 return atalla_mod_exp(r, a, p, m, ctx);
567 }
568
569#ifndef OPENSSL_NO_DH
570/* This function is aliased to mod_exp (with the dh and mont dropped). */
571static int atalla_mod_exp_dh(const DH *dh, BIGNUM *r,
572 const BIGNUM *a, const BIGNUM *p,
573 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
574 {
575 return atalla_mod_exp(r, a, p, m, ctx);
576 }
577#endif
578
579/* This stuff is needed if this ENGINE is being compiled into a self-contained
580 * shared-library. */
581#ifdef ENGINE_DYNAMIC_SUPPORT
582static int bind_fn(ENGINE *e, const char *id)
583 {
584 if(id && (strcmp(id, engine_atalla_id) != 0))
585 return 0;
586 if(!bind_helper(e))
587 return 0;
588 return 1;
589 }
590IMPLEMENT_DYNAMIC_CHECK_FN()
591IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
592#endif /* ENGINE_DYNAMIC_SUPPORT */
593
594#endif /* !OPENSSL_NO_HW_ATALLA */
595#endif /* !OPENSSL_NO_HW */
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-11-10 19:40:38 +0000