1/* ==================================================================== 2 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in 13 * the documentation and/or other materials provided with the 14 * distribution. 15 * 16 * 3. All advertising materials mentioning features or use of this 17 * software must display the following acknowledgment: 18 * "This product includes software developed by the OpenSSL Project 19 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 20 * 21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 22 * endorse or promote products derived from this software without 23 * prior written permission. For written permission, please contact 24 * licensing@OpenSSL.org. 25 * 26 * 5. Products derived from this software may not be called "OpenSSL" 27 * nor may "OpenSSL" appear in their names without prior written 28 * permission of the OpenSSL Project. 29 * 30 * 6. Redistributions of any form whatsoever must retain the following 31 * acknowledgment: 32 * "This product includes software developed by the OpenSSL Project 33 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 34 * 35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 46 * OF THE POSSIBILITY OF SUCH DAMAGE. 47 * ==================================================================== 48 * 49 * This product includes cryptographic software written by Eric Young 50 * (eay@cryptsoft.com). This product includes software written by Tim 51 * Hudson (tjh@cryptsoft.com). 52 * 53 */ 54 55#include <stdio.h> 56#include <openssl/bn.h> 57#include <string.h> 58 59#include <openssl/e_os2.h> 60#if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) || defined(__MINGW32__) 61#include <sys/types.h> 62#include <unistd.h> 63#else 64#include <process.h> 65typedef int pid_t; 66#endif 67 68#if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB) 69#define getpid GetThreadID 70extern int GetThreadID(void); 71#elif defined(_WIN32) && !defined(__WATCOMC__) 72#define getpid _getpid 73#endif 74 75#include <openssl/crypto.h> 76#include <openssl/dso.h> 77#include <openssl/engine.h> 78#include <openssl/buffer.h> 79#ifndef OPENSSL_NO_RSA 80#include <openssl/rsa.h> 81#endif 82#ifndef OPENSSL_NO_DSA 83#include <openssl/dsa.h> 84#endif 85#ifndef OPENSSL_NO_DH 86#include <openssl/dh.h> 87#endif 88#include <openssl/bn.h> 89 90#ifndef OPENSSL_NO_HW 91#ifndef OPENSSL_NO_HW_AEP 92#ifdef FLAT_INC 93#include "aep.h" 94#else 95#include "vendor_defns/aep.h" 96#endif 97 98#define AEP_LIB_NAME "aep engine" 99#define FAIL_TO_SW 0x10101010 100 101#include "e_aep_err.c" 102 103static int aep_init(ENGINE *e); 104static int aep_finish(ENGINE *e); 105static int aep_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void)); 106static int aep_destroy(ENGINE *e); 107 108static AEP_RV aep_get_connection(AEP_CONNECTION_HNDL_PTR hConnection); 109static AEP_RV aep_return_connection(AEP_CONNECTION_HNDL hConnection); 110static AEP_RV aep_close_connection(AEP_CONNECTION_HNDL hConnection); 111static AEP_RV aep_close_all_connections(int use_engine_lock, int *in_use); 112 113/* BIGNUM stuff */ 114#ifndef OPENSSL_NO_RSA 115static int aep_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 116 const BIGNUM *m, BN_CTX *ctx); 117 118static AEP_RV aep_mod_exp_crt(BIGNUM *r,const BIGNUM *a, const BIGNUM *p, 119 const BIGNUM *q, const BIGNUM *dmp1,const BIGNUM *dmq1, 120 const BIGNUM *iqmp, BN_CTX *ctx); 121#endif 122 123/* RSA stuff */ 124#ifndef OPENSSL_NO_RSA 125static int aep_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx); 126#endif 127 128/* This function is aliased to mod_exp (with the mont stuff dropped). */ 129#ifndef OPENSSL_NO_RSA 130static int aep_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 131 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); 132#endif 133 134/* DSA stuff */ 135#ifndef OPENSSL_NO_DSA 136static int aep_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1, 137 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m, 138 BN_CTX *ctx, BN_MONT_CTX *in_mont); 139 140static int aep_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, 141 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, 142 BN_MONT_CTX *m_ctx); 143#endif 144 145/* DH stuff */ 146/* This function is aliased to mod_exp (with the DH and mont dropped). */ 147#ifndef OPENSSL_NO_DH 148static int aep_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a, 149 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); 150#endif 151 152/* rand stuff */ 153#ifdef AEPRAND 154static int aep_rand(unsigned char *buf, int num); 155static int aep_rand_status(void); 156#endif 157 158/* Bignum conversion stuff */ 159static AEP_RV GetBigNumSize(AEP_VOID_PTR ArbBigNum, AEP_U32* BigNumSize); 160static AEP_RV MakeAEPBigNum(AEP_VOID_PTR ArbBigNum, AEP_U32 BigNumSize, 161 unsigned char* AEP_BigNum); 162static AEP_RV ConvertAEPBigNum(void* ArbBigNum, AEP_U32 BigNumSize, 163 unsigned char* AEP_BigNum); 164 165/* The definitions for control commands specific to this engine */ 166#define AEP_CMD_SO_PATH ENGINE_CMD_BASE 167static const ENGINE_CMD_DEFN aep_cmd_defns[] = 168 { 169 { AEP_CMD_SO_PATH, 170 "SO_PATH", 171 "Specifies the path to the 'aep' shared library", 172 ENGINE_CMD_FLAG_STRING 173 }, 174 {0, NULL, NULL, 0} 175 }; 176 177#ifndef OPENSSL_NO_RSA 178/* Our internal RSA_METHOD that we provide pointers to */ 179static RSA_METHOD aep_rsa = 180 { 181 "Aep RSA method", 182 NULL, /*rsa_pub_encrypt*/ 183 NULL, /*rsa_pub_decrypt*/ 184 NULL, /*rsa_priv_encrypt*/ 185 NULL, /*rsa_priv_encrypt*/ 186 aep_rsa_mod_exp, /*rsa_mod_exp*/ 187 aep_mod_exp_mont, /*bn_mod_exp*/ 188 NULL, /*init*/ 189 NULL, /*finish*/ 190 0, /*flags*/ 191 NULL, /*app_data*/ 192 NULL, /*rsa_sign*/ 193 NULL, /*rsa_verify*/ 194 NULL /*rsa_keygen*/ 195 }; 196#endif 197 198#ifndef OPENSSL_NO_DSA 199/* Our internal DSA_METHOD that we provide pointers to */ 200static DSA_METHOD aep_dsa = 201 { 202 "Aep DSA method", 203 NULL, /* dsa_do_sign */ 204 NULL, /* dsa_sign_setup */ 205 NULL, /* dsa_do_verify */ 206 aep_dsa_mod_exp, /* dsa_mod_exp */ 207 aep_mod_exp_dsa, /* bn_mod_exp */ 208 NULL, /* init */ 209 NULL, /* finish */ 210 0, /* flags */ 211 NULL, /* app_data */ 212 NULL, /* dsa_paramgen */ 213 NULL /* dsa_keygen */ 214 }; 215#endif 216 217#ifndef OPENSSL_NO_DH 218/* Our internal DH_METHOD that we provide pointers to */ 219static DH_METHOD aep_dh = 220 { 221 "Aep DH method", 222 NULL, 223 NULL, 224 aep_mod_exp_dh, 225 NULL, 226 NULL, 227 0, 228 NULL, 229 NULL 230 }; 231#endif 232 233#ifdef AEPRAND 234/* our internal RAND_method that we provide pointers to */ 235static RAND_METHOD aep_random = 236 { 237 /*"AEP RAND method", */ 238 NULL, 239 aep_rand, 240 NULL, 241 NULL, 242 aep_rand, 243 aep_rand_status, 244 }; 245#endif 246 247/*Define an array of structures to hold connections*/ 248static AEP_CONNECTION_ENTRY aep_app_conn_table[MAX_PROCESS_CONNECTIONS]; 249 250/*Used to determine if this is a new process*/ 251static pid_t recorded_pid = 0; 252 253#ifdef AEPRAND 254static AEP_U8 rand_block[RAND_BLK_SIZE]; 255static AEP_U32 rand_block_bytes = 0; 256#endif 257 258/* Constants used when creating the ENGINE */ 259static const char *engine_aep_id = "aep"; 260static const char *engine_aep_name = "Aep hardware engine support"; 261 262static int max_key_len = 2176; 263 264 265/* This internal function is used by ENGINE_aep() and possibly by the 266 * "dynamic" ENGINE support too */ 267static int bind_aep(ENGINE *e) 268 { 269#ifndef OPENSSL_NO_RSA 270 const RSA_METHOD *meth1; 271#endif 272#ifndef OPENSSL_NO_DSA 273 const DSA_METHOD *meth2; 274#endif 275#ifndef OPENSSL_NO_DH 276 const DH_METHOD *meth3; 277#endif 278 279 if(!ENGINE_set_id(e, engine_aep_id) || 280 !ENGINE_set_name(e, engine_aep_name) || 281#ifndef OPENSSL_NO_RSA 282 !ENGINE_set_RSA(e, &aep_rsa) || 283#endif 284#ifndef OPENSSL_NO_DSA 285 !ENGINE_set_DSA(e, &aep_dsa) || 286#endif 287#ifndef OPENSSL_NO_DH 288 !ENGINE_set_DH(e, &aep_dh) || 289#endif 290#ifdef AEPRAND 291 !ENGINE_set_RAND(e, &aep_random) || 292#endif 293 !ENGINE_set_init_function(e, aep_init) || 294 !ENGINE_set_destroy_function(e, aep_destroy) || 295 !ENGINE_set_finish_function(e, aep_finish) || 296 !ENGINE_set_ctrl_function(e, aep_ctrl) || 297 !ENGINE_set_cmd_defns(e, aep_cmd_defns)) 298 return 0; 299 300#ifndef OPENSSL_NO_RSA 301 /* We know that the "PKCS1_SSLeay()" functions hook properly 302 * to the aep-specific mod_exp and mod_exp_crt so we use 303 * those functions. NB: We don't use ENGINE_openssl() or 304 * anything "more generic" because something like the RSAref 305 * code may not hook properly, and if you own one of these 306 * cards then you have the right to do RSA operations on it 307 * anyway! */ 308 meth1 = RSA_PKCS1_SSLeay(); 309 aep_rsa.rsa_pub_enc = meth1->rsa_pub_enc; 310 aep_rsa.rsa_pub_dec = meth1->rsa_pub_dec; 311 aep_rsa.rsa_priv_enc = meth1->rsa_priv_enc; 312 aep_rsa.rsa_priv_dec = meth1->rsa_priv_dec; 313#endif 314 315 316#ifndef OPENSSL_NO_DSA 317 /* Use the DSA_OpenSSL() method and just hook the mod_exp-ish 318 * bits. */ 319 meth2 = DSA_OpenSSL(); 320 aep_dsa.dsa_do_sign = meth2->dsa_do_sign; 321 aep_dsa.dsa_sign_setup = meth2->dsa_sign_setup; 322 aep_dsa.dsa_do_verify = meth2->dsa_do_verify; 323 324 aep_dsa = *DSA_get_default_method(); 325 aep_dsa.dsa_mod_exp = aep_dsa_mod_exp; 326 aep_dsa.bn_mod_exp = aep_mod_exp_dsa; 327#endif 328 329#ifndef OPENSSL_NO_DH 330 /* Much the same for Diffie-Hellman */ 331 meth3 = DH_OpenSSL(); 332 aep_dh.generate_key = meth3->generate_key; 333 aep_dh.compute_key = meth3->compute_key; 334 aep_dh.bn_mod_exp = meth3->bn_mod_exp; 335#endif 336 337 /* Ensure the aep error handling is set up */ 338 ERR_load_AEPHK_strings(); 339 340 return 1; 341} 342 343#ifndef OPENSSL_NO_DYNAMIC_ENGINE 344static int bind_helper(ENGINE *e, const char *id) 345 { 346 if(id && (strcmp(id, engine_aep_id) != 0)) 347 return 0; 348 if(!bind_aep(e)) 349 return 0; 350 return 1; 351 } 352IMPLEMENT_DYNAMIC_CHECK_FN() 353IMPLEMENT_DYNAMIC_BIND_FN(bind_helper) 354#else 355static ENGINE *engine_aep(void) 356 { 357 ENGINE *ret = ENGINE_new(); 358 if(!ret) 359 return NULL; 360 if(!bind_aep(ret)) 361 { 362 ENGINE_free(ret); 363 return NULL; 364 } 365 return ret; 366 } 367 368void ENGINE_load_aep(void) 369 { 370 /* Copied from eng_[openssl|dyn].c */ 371 ENGINE *toadd = engine_aep(); 372 if(!toadd) return; 373 ENGINE_add(toadd); 374 ENGINE_free(toadd); 375 ERR_clear_error(); 376 } 377#endif 378 379/* This is a process-global DSO handle used for loading and unloading 380 * the Aep library. NB: This is only set (or unset) during an 381 * init() or finish() call (reference counts permitting) and they're 382 * operating with global locks, so this should be thread-safe 383 * implicitly. */ 384static DSO *aep_dso = NULL; 385 386/* These are the static string constants for the DSO file name and the function 387 * symbol names to bind to. 388*/ 389static const char *AEP_LIBNAME = NULL; 390static const char *get_AEP_LIBNAME(void) 391 { 392 if(AEP_LIBNAME) 393 return AEP_LIBNAME; 394 return "aep"; 395 } 396static void free_AEP_LIBNAME(void) 397 { 398 if(AEP_LIBNAME) 399 OPENSSL_free((void*)AEP_LIBNAME); 400 AEP_LIBNAME = NULL; 401 } 402static long set_AEP_LIBNAME(const char *name) 403 { 404 free_AEP_LIBNAME(); 405 return ((AEP_LIBNAME = BUF_strdup(name)) != NULL ? 1 : 0); 406 } 407 408static const char *AEP_F1 = "AEP_ModExp"; 409static const char *AEP_F2 = "AEP_ModExpCrt"; 410#ifdef AEPRAND 411static const char *AEP_F3 = "AEP_GenRandom"; 412#endif 413static const char *AEP_F4 = "AEP_Finalize"; 414static const char *AEP_F5 = "AEP_Initialize"; 415static const char *AEP_F6 = "AEP_OpenConnection"; 416static const char *AEP_F7 = "AEP_SetBNCallBacks"; 417static const char *AEP_F8 = "AEP_CloseConnection"; 418 419/* These are the function pointers that are (un)set when the library has 420 * successfully (un)loaded. */ 421static t_AEP_OpenConnection *p_AEP_OpenConnection = NULL; 422static t_AEP_CloseConnection *p_AEP_CloseConnection = NULL; 423static t_AEP_ModExp *p_AEP_ModExp = NULL; 424static t_AEP_ModExpCrt *p_AEP_ModExpCrt = NULL; 425#ifdef AEPRAND 426static t_AEP_GenRandom *p_AEP_GenRandom = NULL; 427#endif 428static t_AEP_Initialize *p_AEP_Initialize = NULL; 429static t_AEP_Finalize *p_AEP_Finalize = NULL; 430static t_AEP_SetBNCallBacks *p_AEP_SetBNCallBacks = NULL; 431 432/* (de)initialisation functions. */ 433static int aep_init(ENGINE *e) 434 { 435 t_AEP_ModExp *p1; 436 t_AEP_ModExpCrt *p2; 437#ifdef AEPRAND 438 t_AEP_GenRandom *p3; 439#endif 440 t_AEP_Finalize *p4; 441 t_AEP_Initialize *p5; 442 t_AEP_OpenConnection *p6; 443 t_AEP_SetBNCallBacks *p7; 444 t_AEP_CloseConnection *p8; 445 446 int to_return = 0; 447 448 if(aep_dso != NULL) 449 { 450 AEPHKerr(AEPHK_F_AEP_INIT,AEPHK_R_ALREADY_LOADED); 451 goto err; 452 } 453 /* Attempt to load libaep.so. */ 454 455 aep_dso = DSO_load(NULL, get_AEP_LIBNAME(), NULL, 0); 456 457 if(aep_dso == NULL) 458 { 459 AEPHKerr(AEPHK_F_AEP_INIT,AEPHK_R_NOT_LOADED); 460 goto err; 461 } 462 463 if( !(p1 = (t_AEP_ModExp *) DSO_bind_func( aep_dso,AEP_F1)) || 464 !(p2 = (t_AEP_ModExpCrt*) DSO_bind_func( aep_dso,AEP_F2)) || 465#ifdef AEPRAND 466 !(p3 = (t_AEP_GenRandom*) DSO_bind_func( aep_dso,AEP_F3)) || 467#endif 468 !(p4 = (t_AEP_Finalize*) DSO_bind_func( aep_dso,AEP_F4)) || 469 !(p5 = (t_AEP_Initialize*) DSO_bind_func( aep_dso,AEP_F5)) || 470 !(p6 = (t_AEP_OpenConnection*) DSO_bind_func( aep_dso,AEP_F6)) || 471 !(p7 = (t_AEP_SetBNCallBacks*) DSO_bind_func( aep_dso,AEP_F7)) || 472 !(p8 = (t_AEP_CloseConnection*) DSO_bind_func( aep_dso,AEP_F8))) 473 { 474 AEPHKerr(AEPHK_F_AEP_INIT,AEPHK_R_NOT_LOADED); 475 goto err; 476 } 477 478 /* Copy the pointers */ 479 480 p_AEP_ModExp = p1; 481 p_AEP_ModExpCrt = p2; 482#ifdef AEPRAND 483 p_AEP_GenRandom = p3; 484#endif 485 p_AEP_Finalize = p4; 486 p_AEP_Initialize = p5; 487 p_AEP_OpenConnection = p6; 488 p_AEP_SetBNCallBacks = p7; 489 p_AEP_CloseConnection = p8; 490 491 to_return = 1; 492 493 return to_return; 494 495 err: 496 497 if(aep_dso) 498 DSO_free(aep_dso); 499 aep_dso = NULL; 500 501 p_AEP_OpenConnection = NULL; 502 p_AEP_ModExp = NULL; 503 p_AEP_ModExpCrt = NULL; 504#ifdef AEPRAND 505 p_AEP_GenRandom = NULL; 506#endif 507 p_AEP_Initialize = NULL; 508 p_AEP_Finalize = NULL; 509 p_AEP_SetBNCallBacks = NULL; 510 p_AEP_CloseConnection = NULL; 511 512 return to_return; 513 } 514 515/* Destructor (complements the "ENGINE_aep()" constructor) */ 516static int aep_destroy(ENGINE *e) 517 { 518 free_AEP_LIBNAME(); 519 ERR_unload_AEPHK_strings(); 520 return 1; 521 } 522 523static int aep_finish(ENGINE *e) 524 { 525 int to_return = 0, in_use; 526 AEP_RV rv; 527 528 if(aep_dso == NULL) 529 { 530 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_NOT_LOADED); 531 goto err; 532 } 533 534 rv = aep_close_all_connections(0, &in_use); 535 if (rv != AEP_R_OK) 536 { 537 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_CLOSE_HANDLES_FAILED); 538 goto err; 539 } 540 if (in_use) 541 { 542 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_CONNECTIONS_IN_USE); 543 goto err; 544 } 545 546 rv = p_AEP_Finalize(); 547 if (rv != AEP_R_OK) 548 { 549 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_FINALIZE_FAILED); 550 goto err; 551 } 552 553 if(!DSO_free(aep_dso)) 554 { 555 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_UNIT_FAILURE); 556 goto err; 557 } 558 559 aep_dso = NULL; 560 p_AEP_CloseConnection = NULL; 561 p_AEP_OpenConnection = NULL; 562 p_AEP_ModExp = NULL; 563 p_AEP_ModExpCrt = NULL; 564#ifdef AEPRAND 565 p_AEP_GenRandom = NULL; 566#endif 567 p_AEP_Initialize = NULL; 568 p_AEP_Finalize = NULL; 569 p_AEP_SetBNCallBacks = NULL; 570 571 to_return = 1; 572 err: 573 return to_return; 574 } 575 576static int aep_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void)) 577 { 578 int initialised = ((aep_dso == NULL) ? 0 : 1); 579 switch(cmd) 580 { 581 case AEP_CMD_SO_PATH: 582 if(p == NULL) 583 { 584 AEPHKerr(AEPHK_F_AEP_CTRL, 585 ERR_R_PASSED_NULL_PARAMETER); 586 return 0; 587 } 588 if(initialised) 589 { 590 AEPHKerr(AEPHK_F_AEP_CTRL, 591 AEPHK_R_ALREADY_LOADED); 592 return 0; 593 } 594 return set_AEP_LIBNAME((const char*)p); 595 default: 596 break; 597 } 598 AEPHKerr(AEPHK_F_AEP_CTRL,AEPHK_R_CTRL_COMMAND_NOT_IMPLEMENTED); 599 return 0; 600 } 601 602static int aep_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 603 const BIGNUM *m, BN_CTX *ctx) 604 { 605 int to_return = 0; 606 int r_len = 0; 607 AEP_CONNECTION_HNDL hConnection; 608 AEP_RV rv; 609 610 r_len = BN_num_bits(m); 611 612 /* Perform in software if modulus is too large for hardware. */ 613 614 if (r_len > max_key_len){ 615 AEPHKerr(AEPHK_F_AEP_MOD_EXP, AEPHK_R_SIZE_TOO_LARGE_OR_TOO_SMALL); 616 return BN_mod_exp(r, a, p, m, ctx); 617 } 618 619 /*Grab a connection from the pool*/ 620 rv = aep_get_connection(&hConnection); 621 if (rv != AEP_R_OK) 622 { 623 AEPHKerr(AEPHK_F_AEP_MOD_EXP,AEPHK_R_GET_HANDLE_FAILED); 624 return BN_mod_exp(r, a, p, m, ctx); 625 } 626 627 /*To the card with the mod exp*/ 628 rv = p_AEP_ModExp(hConnection,(void*)a, (void*)p,(void*)m, (void*)r,NULL); 629 630 if (rv != AEP_R_OK) 631 { 632 AEPHKerr(AEPHK_F_AEP_MOD_EXP,AEPHK_R_MOD_EXP_FAILED); 633 rv = aep_close_connection(hConnection); 634 return BN_mod_exp(r, a, p, m, ctx); 635 } 636 637 /*Return the connection to the pool*/ 638 rv = aep_return_connection(hConnection); 639 if (rv != AEP_R_OK) 640 { 641 AEPHKerr(AEPHK_F_AEP_MOD_EXP,AEPHK_R_RETURN_CONNECTION_FAILED); 642 goto err; 643 } 644 645 to_return = 1; 646 err: 647 return to_return; 648 } 649 650#ifndef OPENSSL_NO_RSA 651static AEP_RV aep_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 652 const BIGNUM *q, const BIGNUM *dmp1, 653 const BIGNUM *dmq1,const BIGNUM *iqmp, BN_CTX *ctx) 654 { 655 AEP_RV rv = AEP_R_OK; 656 AEP_CONNECTION_HNDL hConnection; 657 658 /*Grab a connection from the pool*/ 659 rv = aep_get_connection(&hConnection); 660 if (rv != AEP_R_OK) 661 { 662 AEPHKerr(AEPHK_F_AEP_MOD_EXP_CRT,AEPHK_R_GET_HANDLE_FAILED); 663 return FAIL_TO_SW; 664 } 665 666 /*To the card with the mod exp*/ 667 rv = p_AEP_ModExpCrt(hConnection,(void*)a, (void*)p, (void*)q, (void*)dmp1,(void*)dmq1, 668 (void*)iqmp,(void*)r,NULL); 669 if (rv != AEP_R_OK) 670 { 671 AEPHKerr(AEPHK_F_AEP_MOD_EXP_CRT,AEPHK_R_MOD_EXP_CRT_FAILED); 672 rv = aep_close_connection(hConnection); 673 return FAIL_TO_SW; 674 } 675 676 /*Return the connection to the pool*/ 677 rv = aep_return_connection(hConnection); 678 if (rv != AEP_R_OK) 679 { 680 AEPHKerr(AEPHK_F_AEP_MOD_EXP_CRT,AEPHK_R_RETURN_CONNECTION_FAILED); 681 goto err; 682 } 683 684 err: 685 return rv; 686 } 687#endif 688 689 690#ifdef AEPRAND 691static int aep_rand(unsigned char *buf,int len ) 692 { 693 AEP_RV rv = AEP_R_OK; 694 AEP_CONNECTION_HNDL hConnection; 695 696 CRYPTO_w_lock(CRYPTO_LOCK_RAND); 697 698 /*Can the request be serviced with what's already in the buffer?*/ 699 if (len <= rand_block_bytes) 700 { 701 memcpy(buf, &rand_block[RAND_BLK_SIZE - rand_block_bytes], len); 702 rand_block_bytes -= len; 703 CRYPTO_w_unlock(CRYPTO_LOCK_RAND); 704 } 705 else 706 /*If not the get another block of random bytes*/ 707 { 708 CRYPTO_w_unlock(CRYPTO_LOCK_RAND); 709 710 rv = aep_get_connection(&hConnection); 711 if (rv != AEP_R_OK) 712 { 713 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_GET_HANDLE_FAILED); 714 goto err_nounlock; 715 } 716 717 if (len > RAND_BLK_SIZE) 718 { 719 rv = p_AEP_GenRandom(hConnection, len, 2, buf, NULL); 720 if (rv != AEP_R_OK) 721 { 722 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_GET_RANDOM_FAILED); 723 goto err_nounlock; 724 } 725 } 726 else 727 { 728 CRYPTO_w_lock(CRYPTO_LOCK_RAND); 729 730 rv = p_AEP_GenRandom(hConnection, RAND_BLK_SIZE, 2, &rand_block[0], NULL); 731 if (rv != AEP_R_OK) 732 { 733 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_GET_RANDOM_FAILED); 734 735 goto err; 736 } 737 738 rand_block_bytes = RAND_BLK_SIZE; 739 740 memcpy(buf, &rand_block[RAND_BLK_SIZE - rand_block_bytes], len); 741 rand_block_bytes -= len; 742 743 CRYPTO_w_unlock(CRYPTO_LOCK_RAND); 744 } 745 746 rv = aep_return_connection(hConnection); 747 if (rv != AEP_R_OK) 748 { 749 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_RETURN_CONNECTION_FAILED); 750 751 goto err_nounlock; 752 } 753 } 754 755 return 1; 756 err: 757 CRYPTO_w_unlock(CRYPTO_LOCK_RAND); 758 err_nounlock: 759 return 0; 760 } 761 762static int aep_rand_status(void) 763{ 764 return 1; 765} 766#endif 767 768#ifndef OPENSSL_NO_RSA 769static int aep_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx) 770 { 771 int to_return = 0; 772 AEP_RV rv = AEP_R_OK; 773 774 if (!aep_dso) 775 { 776 AEPHKerr(AEPHK_F_AEP_RSA_MOD_EXP,AEPHK_R_NOT_LOADED); 777 goto err; 778 } 779 780 /*See if we have all the necessary bits for a crt*/ 781 if (rsa->q && rsa->dmp1 && rsa->dmq1 && rsa->iqmp) 782 { 783 rv = aep_mod_exp_crt(r0,I,rsa->p,rsa->q, rsa->dmp1,rsa->dmq1,rsa->iqmp,ctx); 784 785 if (rv == FAIL_TO_SW){ 786 const RSA_METHOD *meth = RSA_PKCS1_SSLeay(); 787 to_return = (*meth->rsa_mod_exp)(r0, I, rsa, ctx); 788 goto err; 789 } 790 else if (rv != AEP_R_OK) 791 goto err; 792 } 793 else 794 { 795 if (!rsa->d || !rsa->n) 796 { 797 AEPHKerr(AEPHK_F_AEP_RSA_MOD_EXP,AEPHK_R_MISSING_KEY_COMPONENTS); 798 goto err; 799 } 800 801 rv = aep_mod_exp(r0,I,rsa->d,rsa->n,ctx); 802 if (rv != AEP_R_OK) 803 goto err; 804 805 } 806 807 to_return = 1; 808 809 err: 810 return to_return; 811} 812#endif 813 814#ifndef OPENSSL_NO_DSA 815static int aep_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1, 816 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m, 817 BN_CTX *ctx, BN_MONT_CTX *in_mont) 818 { 819 BIGNUM t; 820 int to_return = 0; 821 BN_init(&t); 822 823 /* let rr = a1 ^ p1 mod m */ 824 if (!aep_mod_exp(rr,a1,p1,m,ctx)) goto end; 825 /* let t = a2 ^ p2 mod m */ 826 if (!aep_mod_exp(&t,a2,p2,m,ctx)) goto end; 827 /* let rr = rr * t mod m */ 828 if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end; 829 to_return = 1; 830 end: 831 BN_free(&t); 832 return to_return; 833 } 834 835static int aep_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, 836 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, 837 BN_MONT_CTX *m_ctx) 838 { 839 return aep_mod_exp(r, a, p, m, ctx); 840 } 841#endif 842 843#ifndef OPENSSL_NO_RSA 844/* This function is aliased to mod_exp (with the mont stuff dropped). */ 845static int aep_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 846 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) 847 { 848 return aep_mod_exp(r, a, p, m, ctx); 849 } 850#endif 851 852#ifndef OPENSSL_NO_DH 853/* This function is aliased to mod_exp (with the dh and mont dropped). */ 854static int aep_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a, 855 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, 856 BN_MONT_CTX *m_ctx) 857 { 858 return aep_mod_exp(r, a, p, m, ctx); 859 } 860#endif 861 862static AEP_RV aep_get_connection(AEP_CONNECTION_HNDL_PTR phConnection) 863 { 864 int count; 865 AEP_RV rv = AEP_R_OK; 866 867 /*Get the current process id*/ 868 pid_t curr_pid; 869 870 CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); 871 872 curr_pid = getpid(); 873 874 /*Check if this is the first time this is being called from the current 875 process*/ 876 if (recorded_pid != curr_pid) 877 { 878 /*Remember our pid so we can check if we're in a new process*/ 879 recorded_pid = curr_pid; 880 881 /*Call Finalize to make sure we have not inherited some data 882 from a parent process*/ 883 p_AEP_Finalize(); 884 885 /*Initialise the AEP API*/ 886 rv = p_AEP_Initialize(NULL); 887 888 if (rv != AEP_R_OK) 889 { 890 AEPHKerr(AEPHK_F_AEP_GET_CONNECTION,AEPHK_R_INIT_FAILURE); 891 recorded_pid = 0; 892 goto end; 893 } 894 895 /*Set the AEP big num call back functions*/ 896 rv = p_AEP_SetBNCallBacks(&GetBigNumSize, &MakeAEPBigNum, 897 &ConvertAEPBigNum); 898 899 if (rv != AEP_R_OK) 900 { 901 AEPHKerr(AEPHK_F_AEP_GET_CONNECTION,AEPHK_R_SETBNCALLBACK_FAILURE); 902 recorded_pid = 0; 903 goto end; 904 } 905 906#ifdef AEPRAND 907 /*Reset the rand byte count*/ 908 rand_block_bytes = 0; 909#endif 910 911 /*Init the structures*/ 912 for (count = 0;count < MAX_PROCESS_CONNECTIONS;count ++) 913 { 914 aep_app_conn_table[count].conn_state = NotConnected; 915 aep_app_conn_table[count].conn_hndl = 0; 916 } 917 918 /*Open a connection*/ 919 rv = p_AEP_OpenConnection(phConnection); 920 921 if (rv != AEP_R_OK) 922 { 923 AEPHKerr(AEPHK_F_AEP_GET_CONNECTION,AEPHK_R_UNIT_FAILURE); 924 recorded_pid = 0; 925 goto end; 926 } 927 928 aep_app_conn_table[0].conn_state = InUse; 929 aep_app_conn_table[0].conn_hndl = *phConnection; 930 goto end; 931 } 932 /*Check the existing connections to see if we can find a free one*/ 933 for (count = 0;count < MAX_PROCESS_CONNECTIONS;count ++) 934 { 935 if (aep_app_conn_table[count].conn_state == Connected) 936 { 937 aep_app_conn_table[count].conn_state = InUse; 938 *phConnection = aep_app_conn_table[count].conn_hndl; 939 goto end; 940 } 941 } 942 /*If no connections available, we're going to have to try 943 to open a new one*/ 944 for (count = 0;count < MAX_PROCESS_CONNECTIONS;count ++) 945 { 946 if (aep_app_conn_table[count].conn_state == NotConnected) 947 { 948 /*Open a connection*/ 949 rv = p_AEP_OpenConnection(phConnection); 950 951 if (rv != AEP_R_OK) 952 { 953 AEPHKerr(AEPHK_F_AEP_GET_CONNECTION,AEPHK_R_UNIT_FAILURE); 954 goto end; 955 } 956 957 aep_app_conn_table[count].conn_state = InUse; 958 aep_app_conn_table[count].conn_hndl = *phConnection; 959 goto end; 960 } 961 } 962 rv = AEP_R_GENERAL_ERROR; 963 end: 964 CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); 965 return rv; 966 } 967 968 969static AEP_RV aep_return_connection(AEP_CONNECTION_HNDL hConnection) 970 { 971 int count; 972 973 CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); 974 975 /*Find the connection item that matches this connection handle*/ 976 for(count = 0;count < MAX_PROCESS_CONNECTIONS;count ++) 977 { 978 if (aep_app_conn_table[count].conn_hndl == hConnection) 979 { 980 aep_app_conn_table[count].conn_state = Connected; 981 break; 982 } 983 } 984 985 CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); 986 987 return AEP_R_OK; 988 } 989 990static AEP_RV aep_close_connection(AEP_CONNECTION_HNDL hConnection) 991 { 992 int count; 993 AEP_RV rv = AEP_R_OK; 994 995 CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); 996 997 /*Find the connection item that matches this connection handle*/ 998 for(count = 0;count < MAX_PROCESS_CONNECTIONS;count ++) 999 { 1000 if (aep_app_conn_table[count].conn_hndl == hConnection) 1001 { 1002 rv = p_AEP_CloseConnection(aep_app_conn_table[count].conn_hndl); 1003 if (rv != AEP_R_OK) 1004 goto end; 1005 aep_app_conn_table[count].conn_state = NotConnected; 1006 aep_app_conn_table[count].conn_hndl = 0; 1007 break; 1008 } 1009 } 1010 1011 end: 1012 CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); 1013 return rv; 1014 } 1015 1016static AEP_RV aep_close_all_connections(int use_engine_lock, int *in_use) 1017 { 1018 int count; 1019 AEP_RV rv = AEP_R_OK; 1020 1021 *in_use = 0; 1022 if (use_engine_lock) CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); 1023 for (count = 0;count < MAX_PROCESS_CONNECTIONS;count ++) 1024 { 1025 switch (aep_app_conn_table[count].conn_state) 1026 { 1027 case Connected: 1028 rv = p_AEP_CloseConnection(aep_app_conn_table[count].conn_hndl); 1029 if (rv != AEP_R_OK) 1030 goto end; 1031 aep_app_conn_table[count].conn_state = NotConnected; 1032 aep_app_conn_table[count].conn_hndl = 0; 1033 break; 1034 case InUse: 1035 (*in_use)++; 1036 break; 1037 case NotConnected: 1038 break; 1039 } 1040 } 1041 end: 1042 if (use_engine_lock) CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); 1043 return rv; 1044 } 1045 1046/*BigNum call back functions, used to convert OpenSSL bignums into AEP bignums. 1047 Note only 32bit Openssl build support*/ 1048 1049static AEP_RV GetBigNumSize(AEP_VOID_PTR ArbBigNum, AEP_U32* BigNumSize) 1050 { 1051 BIGNUM* bn; 1052 1053 /*Cast the ArbBigNum pointer to our BIGNUM struct*/ 1054 bn = (BIGNUM*) ArbBigNum; 1055 1056#ifdef SIXTY_FOUR_BIT_LONG 1057 *BigNumSize = bn->top << 3; 1058#else 1059 /*Size of the bignum in bytes is equal to the bn->top (no of 32 bit 1060 words) multiplies by 4*/ 1061 *BigNumSize = bn->top << 2; 1062#endif 1063 1064 return AEP_R_OK; 1065 } 1066 1067static AEP_RV MakeAEPBigNum(AEP_VOID_PTR ArbBigNum, AEP_U32 BigNumSize, 1068 unsigned char* AEP_BigNum) 1069 { 1070 BIGNUM* bn; 1071 1072#ifndef SIXTY_FOUR_BIT_LONG 1073 unsigned char* buf; 1074 int i; 1075#endif 1076 1077 /*Cast the ArbBigNum pointer to our BIGNUM struct*/ 1078 bn = (BIGNUM*) ArbBigNum; 1079 1080#ifdef SIXTY_FOUR_BIT_LONG 1081 memcpy(AEP_BigNum, bn->d, BigNumSize); 1082#else 1083 /*Must copy data into a (monotone) least significant byte first format 1084 performing endian conversion if necessary*/ 1085 for(i=0;i<bn->top;i++) 1086 { 1087 buf = (unsigned char*)&bn->d[i]; 1088 1089 *((AEP_U32*)AEP_BigNum) = (AEP_U32) 1090 ((unsigned) buf[1] << 8 | buf[0]) | 1091 ((unsigned) buf[3] << 8 | buf[2]) << 16; 1092 1093 AEP_BigNum += 4; 1094 } 1095#endif 1096 1097 return AEP_R_OK; 1098 } 1099 1100/*Turn an AEP Big Num back to a user big num*/ 1101static AEP_RV ConvertAEPBigNum(void* ArbBigNum, AEP_U32 BigNumSize, 1102 unsigned char* AEP_BigNum) 1103 { 1104 BIGNUM* bn; 1105#ifndef SIXTY_FOUR_BIT_LONG 1106 int i; 1107#endif 1108 1109 bn = (BIGNUM*)ArbBigNum; 1110 1111 /*Expand the result bn so that it can hold our big num. 1112 Size is in bits*/ 1113 bn_expand(bn, (int)(BigNumSize << 3)); 1114 1115#ifdef SIXTY_FOUR_BIT_LONG 1116 bn->top = BigNumSize >> 3; 1117 1118 if((BigNumSize & 7) != 0) 1119 bn->top++; 1120 1121 memset(bn->d, 0, bn->top << 3); 1122 1123 memcpy(bn->d, AEP_BigNum, BigNumSize); 1124#else 1125 bn->top = BigNumSize >> 2; 1126 1127 for(i=0;i<bn->top;i++) 1128 { 1129 bn->d[i] = (AEP_U32) 1130 ((unsigned) AEP_BigNum[3] << 8 | AEP_BigNum[2]) << 16 | 1131 ((unsigned) AEP_BigNum[1] << 8 | AEP_BigNum[0]); 1132 AEP_BigNum += 4; 1133 } 1134#endif 1135 1136 return AEP_R_OK; 1137} 1138 1139#endif /* !OPENSSL_NO_HW_AEP */ 1140#endif /* !OPENSSL_NO_HW */ 1141