e_atalla.c revision 296465
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. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 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. 20 * 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/)" 25 * 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. 30 * 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. 34 * 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/)" 39 * 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 * ==================================================================== 53 * 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). 57 * 58 */ 59 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> 76 77#ifndef OPENSSL_NO_HW 78# ifndef OPENSSL_NO_HW_ATALLA 79 80# ifdef FLAT_INC 81# include "atalla.h" 82# else 83# include "vendor_defns/atalla.h" 84# endif 85 86# define ATALLA_LIB_NAME "atalla engine" 87# include "e_atalla_err.c" 88 89static int atalla_destroy(ENGINE *e); 90static int atalla_init(ENGINE *e); 91static int atalla_finish(ENGINE *e); 92static int atalla_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void)); 93 94/* BIGNUM stuff */ 95static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 96 const BIGNUM *m, BN_CTX *ctx); 97 98# ifndef OPENSSL_NO_RSA 99/* RSA stuff */ 100static 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). */ 103static 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 107 108# ifndef OPENSSL_NO_DSA 109/* DSA stuff */ 110static 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); 113static 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 117 118# ifndef OPENSSL_NO_DH 119/* DH stuff */ 120/* This function is alised to mod_exp (with the DH and mont dropped). */ 121static 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 126 127/* The definitions for control commands specific to this engine */ 128# define ATALLA_CMD_SO_PATH ENGINE_CMD_BASE 129static 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} 135}; 136 137# ifndef OPENSSL_NO_RSA 138/* Our internal RSA_METHOD that we provide pointers to */ 139static 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, 149 0, 150 NULL, 151 NULL, 152 NULL, 153 NULL 154}; 155# endif 156 157# ifndef OPENSSL_NO_DSA 158/* Our internal DSA_METHOD that we provide pointers to */ 159static 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 */ 172}; 173# endif 174 175# ifndef OPENSSL_NO_DH 176/* Our internal DH_METHOD that we provide pointers to */ 177static DH_METHOD atalla_dh = { 178 "Atalla DH method", 179 NULL, 180 NULL, 181 atalla_mod_exp_dh, 182 NULL, 183 NULL, 184 0, 185 NULL, 186 NULL 187}; 188# endif 189 190/* Constants used when creating the ENGINE */ 191static const char *engine_atalla_id = "atalla"; 192static const char *engine_atalla_name = "Atalla hardware engine support"; 193 194/* 195 * This internal function is used by ENGINE_atalla() and possibly by the 196 * "dynamic" ENGINE support too 197 */ 198static int bind_helper(ENGINE *e) 199{ 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; 226 227# ifndef OPENSSL_NO_RSA 228 /* 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! 235 */ 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 242 243# ifndef OPENSSL_NO_DSA 244 /* 245 * Use the DSA_OpenSSL() method and just hook the mod_exp-ish bits. 246 */ 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 252 253# 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 259 260 /* Ensure the atalla error handling is set up */ 261 ERR_load_ATALLA_strings(); 262 return 1; 263} 264 265# ifdef OPENSSL_NO_DYNAMIC_ENGINE 266static ENGINE *engine_atalla(void) 267{ 268 ENGINE *ret = ENGINE_new(); 269 if (!ret) 270 return NULL; 271 if (!bind_helper(ret)) { 272 ENGINE_free(ret); 273 return NULL; 274 } 275 return ret; 276} 277 278void ENGINE_load_atalla(void) 279{ 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(); 287} 288# endif 289 290/* 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. 295 */ 296static DSO *atalla_dso = NULL; 297 298/* 299 * These are the function pointers that are (un)set when the library has 300 * successfully (un)loaded. 301 */ 302static tfnASI_GetHardwareConfig *p_Atalla_GetHardwareConfig = NULL; 303static tfnASI_RSAPrivateKeyOpFn *p_Atalla_RSAPrivateKeyOpFn = NULL; 304static tfnASI_GetPerformanceStatistics *p_Atalla_GetPerformanceStatistics = 305 NULL; 306 307/* 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. 316 */ 317static const char *ATALLA_LIBNAME = NULL; 318static const char *get_ATALLA_LIBNAME(void) 319{ 320 if (ATALLA_LIBNAME) 321 return ATALLA_LIBNAME; 322 return "atasi"; 323} 324 325static void free_ATALLA_LIBNAME(void) 326{ 327 if (ATALLA_LIBNAME) 328 OPENSSL_free((void *)ATALLA_LIBNAME); 329 ATALLA_LIBNAME = NULL; 330} 331 332static long set_ATALLA_LIBNAME(const char *name) 333{ 334 free_ATALLA_LIBNAME(); 335 return (((ATALLA_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0); 336} 337 338static const char *ATALLA_F1 = "ASI_GetHardwareConfig"; 339static const char *ATALLA_F2 = "ASI_RSAPrivateKeyOpFn"; 340static const char *ATALLA_F3 = "ASI_GetPerformanceStatistics"; 341 342/* Destructor (complements the "ENGINE_atalla()" constructor) */ 343static int atalla_destroy(ENGINE *e) 344{ 345 free_ATALLA_LIBNAME(); 346 /* 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). 350 */ 351 ERR_unload_ATALLA_strings(); 352 return 1; 353} 354 355/* (de)initialisation functions. */ 356static int atalla_init(ENGINE *e) 357{ 358 tfnASI_GetHardwareConfig *p1; 359 tfnASI_RSAPrivateKeyOpFn *p2; 360 tfnASI_GetPerformanceStatistics *p3; 361 /* 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. :-) 364 */ 365 unsigned int config_buf[1024]; 366 367 if (atalla_dso != NULL) { 368 ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_ALREADY_LOADED); 369 goto err; 370 } 371 /* 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. 375 */ 376 /* 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. 380 */ 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; 385 } 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; 395 } 396 /* Copy the pointers */ 397 p_Atalla_GetHardwareConfig = p1; 398 p_Atalla_RSAPrivateKeyOpFn = p2; 399 p_Atalla_GetPerformanceStatistics = p3; 400 /* 401 * Perform a basic test to see if there's actually any unit running. 402 */ 403 if (p1(0L, config_buf) != 0) { 404 ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_UNIT_FAILURE); 405 goto err; 406 } 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; 417} 418 419static int atalla_finish(ENGINE *e) 420{ 421 free_ATALLA_LIBNAME(); 422 if (atalla_dso == NULL) { 423 ATALLAerr(ATALLA_F_ATALLA_FINISH, ATALLA_R_NOT_LOADED); 424 return 0; 425 } 426 if (!DSO_free(atalla_dso)) { 427 ATALLAerr(ATALLA_F_ATALLA_FINISH, ATALLA_R_UNIT_FAILURE); 428 return 0; 429 } 430 atalla_dso = NULL; 431 p_Atalla_GetHardwareConfig = NULL; 432 p_Atalla_RSAPrivateKeyOpFn = NULL; 433 p_Atalla_GetPerformanceStatistics = NULL; 434 return 1; 435} 436 437static int atalla_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void)) 438{ 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; 445 } 446 if (initialised) { 447 ATALLAerr(ATALLA_F_ATALLA_CTRL, ATALLA_R_ALREADY_LOADED); 448 return 0; 449 } 450 return set_ATALLA_LIBNAME((const char *)p); 451 default: 452 break; 453 } 454 ATALLAerr(ATALLA_F_ATALLA_CTRL, ATALLA_R_CTRL_COMMAND_NOT_IMPLEMENTED); 455 return 0; 456} 457 458static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 459 const BIGNUM *m, BN_CTX *ctx) 460{ 461 /* 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. 466 */ 467 BIGNUM *modulus; 468 BIGNUM *exponent; 469 BIGNUM *argument; 470 BIGNUM *result; 471 RSAPrivateKey keydata; 472 int to_return, numbytes; 473 474 modulus = exponent = argument = result = NULL; 475 to_return = 0; /* expect failure */ 476 477 if (!atalla_dso) { 478 ATALLAerr(ATALLA_F_ATALLA_MOD_EXP, ATALLA_R_NOT_LOADED); 479 goto err; 480 } 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; 490 } 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; 495 } 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; 517 } 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; 524} 525 526# ifndef OPENSSL_NO_RSA 527static int atalla_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, 528 BN_CTX *ctx) 529{ 530 int to_return = 0; 531 532 if (!atalla_dso) { 533 ATALLAerr(ATALLA_F_ATALLA_RSA_MOD_EXP, ATALLA_R_NOT_LOADED); 534 goto err; 535 } 536 if (!rsa->d || !rsa->n) { 537 ATALLAerr(ATALLA_F_ATALLA_RSA_MOD_EXP, 538 ATALLA_R_MISSING_KEY_COMPONENTS); 539 goto err; 540 } 541 to_return = atalla_mod_exp(r0, I, rsa->d, rsa->n, ctx); 542 err: 543 return to_return; 544} 545# endif 546 547# ifndef OPENSSL_NO_DSA 548/* 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". 556 */ 557static 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) 560{ 561 BIGNUM t; 562 int to_return = 0; 563 564 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; 578} 579 580static 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) 583{ 584 return atalla_mod_exp(r, a, p, m, ctx); 585} 586# endif 587 588# ifndef OPENSSL_NO_RSA 589/* This function is aliased to mod_exp (with the mont stuff dropped). */ 590static 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) 593{ 594 return atalla_mod_exp(r, a, p, m, ctx); 595} 596# endif 597 598# ifndef OPENSSL_NO_DH 599/* This function is aliased to mod_exp (with the dh and mont dropped). */ 600static 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) 603{ 604 return atalla_mod_exp(r, a, p, m, ctx); 605} 606# endif 607 608/* 609 * This stuff is needed if this ENGINE is being compiled into a 610 * self-contained shared-library. 611 */ 612# ifndef OPENSSL_NO_DYNAMIC_ENGINE 613static int bind_fn(ENGINE *e, const char *id) 614{ 615 if (id && (strcmp(id, engine_atalla_id) != 0)) 616 return 0; 617 if (!bind_helper(e)) 618 return 0; 619 return 1; 620} 621 622IMPLEMENT_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 */ 627