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diff --git a/src/lib/libcrypto/engine/hw_aep.c b/src/lib/libcrypto/engine/hw_aep.c
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1/* crypto/engine/hw_aep.c */
2/*
3 */
4/* ====================================================================
5 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgment:
21 * "This product includes software developed by the OpenSSL Project
22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
23 *
24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
25 * endorse or promote products derived from this software without
26 * prior written permission. For written permission, please contact
27 * licensing@OpenSSL.org.
28 *
29 * 5. Products derived from this software may not be called "OpenSSL"
30 * nor may "OpenSSL" appear in their names without prior written
31 * permission of the OpenSSL Project.
32 *
33 * 6. Redistributions of any form whatsoever must retain the following
34 * acknowledgment:
35 * "This product includes software developed by the OpenSSL Project
36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
37 *
38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
49 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * ====================================================================
51 *
52 * This product includes cryptographic software written by Eric Young
53 * (eay@cryptsoft.com). This product includes software written by Tim
54 * Hudson (tjh@cryptsoft.com).
55 *
56 */
57
58#include <stdio.h>
59#include <openssl/bn.h>
60#include <string.h>
61
62#include <openssl/e_os2.h>
63#if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
64#include <sys/types.h>
65#include <unistd.h>
66#else
67#include <process.h>
68typedef int pid_t;
69#endif
70
71#include <openssl/crypto.h>
72#include <openssl/dso.h>
73#include <openssl/engine.h>
74#include <openssl/buffer.h>
75
76#ifndef OPENSSL_NO_HW
77#ifndef OPENSSL_NO_HW_AEP
78#ifdef FLAT_INC
79#include "aep.h"
80#else
81#include "vendor_defns/aep.h"
82#endif
83
84#define AEP_LIB_NAME "aep engine"
85#define FAIL_TO_SW 0x10101010
86
87#include "hw_aep_err.c"
88
89static int aep_init(ENGINE *e);
90static int aep_finish(ENGINE *e);
91static int aep_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
92static int aep_destroy(ENGINE *e);
93
94static AEP_RV aep_get_connection(AEP_CONNECTION_HNDL_PTR hConnection);
95static AEP_RV aep_return_connection(AEP_CONNECTION_HNDL hConnection);
96static AEP_RV aep_close_connection(AEP_CONNECTION_HNDL hConnection);
97static AEP_RV aep_close_all_connections(int use_engine_lock, int *in_use);
98
99/* BIGNUM stuff */
100static int aep_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
101 const BIGNUM *m, BN_CTX *ctx);
102
103static AEP_RV aep_mod_exp_crt(BIGNUM *r,const BIGNUM *a, const BIGNUM *p,
104 const BIGNUM *q, const BIGNUM *dmp1,const BIGNUM *dmq1,
105 const BIGNUM *iqmp, BN_CTX *ctx);
106
107/* RSA stuff */
108#ifndef OPENSSL_NO_RSA
109static int aep_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
110#endif
111
112/* This function is aliased to mod_exp (with the mont stuff dropped). */
113static int aep_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
114 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
115
116/* DSA stuff */
117#ifndef OPENSSL_NO_DSA
118static int aep_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
119 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
120 BN_CTX *ctx, BN_MONT_CTX *in_mont);
121
122static int aep_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
123 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
124 BN_MONT_CTX *m_ctx);
125#endif
126
127/* DH stuff */
128/* This function is aliased to mod_exp (with the DH and mont dropped). */
129#ifndef OPENSSL_NO_DH
130static int aep_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
131 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
132#endif
133
134/* rand stuff */
135#ifdef AEPRAND
136static int aep_rand(unsigned char *buf, int num);
137static int aep_rand_status(void);
138#endif
139
140/* Bignum conversion stuff */
141static AEP_RV GetBigNumSize(AEP_VOID_PTR ArbBigNum, AEP_U32* BigNumSize);
142static AEP_RV MakeAEPBigNum(AEP_VOID_PTR ArbBigNum, AEP_U32 BigNumSize,
143 unsigned char* AEP_BigNum);
144static AEP_RV ConvertAEPBigNum(void* ArbBigNum, AEP_U32 BigNumSize,
145 unsigned char* AEP_BigNum);
146
147/* The definitions for control commands specific to this engine */
148#define AEP_CMD_SO_PATH ENGINE_CMD_BASE
149static const ENGINE_CMD_DEFN aep_cmd_defns[] =
150 {
151 { AEP_CMD_SO_PATH,
152 "SO_PATH",
153 "Specifies the path to the 'aep' shared library",
154 ENGINE_CMD_FLAG_STRING
155 },
156 {0, NULL, NULL, 0}
157 };
158
159#ifndef OPENSSL_NO_RSA
160/* Our internal RSA_METHOD that we provide pointers to */
161static RSA_METHOD aep_rsa =
162 {
163 "Aep RSA method",
164 NULL, /*rsa_pub_encrypt*/
165 NULL, /*rsa_pub_decrypt*/
166 NULL, /*rsa_priv_encrypt*/
167 NULL, /*rsa_priv_encrypt*/
168 aep_rsa_mod_exp, /*rsa_mod_exp*/
169 aep_mod_exp_mont, /*bn_mod_exp*/
170 NULL, /*init*/
171 NULL, /*finish*/
172 0, /*flags*/
173 NULL, /*app_data*/
174 NULL, /*rsa_sign*/
175 NULL /*rsa_verify*/
176 };
177#endif
178
179#ifndef OPENSSL_NO_DSA
180/* Our internal DSA_METHOD that we provide pointers to */
181static DSA_METHOD aep_dsa =
182 {
183 "Aep DSA method",
184 NULL, /* dsa_do_sign */
185 NULL, /* dsa_sign_setup */
186 NULL, /* dsa_do_verify */
187 aep_dsa_mod_exp, /* dsa_mod_exp */
188 aep_mod_exp_dsa, /* bn_mod_exp */
189 NULL, /* init */
190 NULL, /* finish */
191 0, /* flags */
192 NULL /* app_data */
193 };
194#endif
195
196#ifndef OPENSSL_NO_DH
197/* Our internal DH_METHOD that we provide pointers to */
198static DH_METHOD aep_dh =
199 {
200 "Aep DH method",
201 NULL,
202 NULL,
203 aep_mod_exp_dh,
204 NULL,
205 NULL,
206 0,
207 NULL
208 };
209#endif
210
211#ifdef AEPRAND
212/* our internal RAND_method that we provide pointers to */
213static RAND_METHOD aep_random =
214 {
215 /*"AEP RAND method", */
216 NULL,
217 aep_rand,
218 NULL,
219 NULL,
220 aep_rand,
221 aep_rand_status,
222 };
223#endif
224
225/*Define an array of structures to hold connections*/
226static AEP_CONNECTION_ENTRY aep_app_conn_table[MAX_PROCESS_CONNECTIONS];
227
228/*Used to determine if this is a new process*/
229static pid_t recorded_pid = 0;
230
231#ifdef AEPRAND
232static AEP_U8 rand_block[RAND_BLK_SIZE];
233static AEP_U32 rand_block_bytes = 0;
234#endif
235
236/* Constants used when creating the ENGINE */
237static const char *engine_aep_id = "aep";
238static const char *engine_aep_name = "Aep hardware engine support";
239
240static int max_key_len = 2176;
241
242
243/* This internal function is used by ENGINE_aep() and possibly by the
244 * "dynamic" ENGINE support too */
245static int bind_aep(ENGINE *e)
246 {
247#ifndef OPENSSL_NO_RSA
248 const RSA_METHOD *meth1;
249#endif
250#ifndef OPENSSL_NO_DSA
251 const DSA_METHOD *meth2;
252#endif
253#ifndef OPENSSL_NO_DH
254 const DH_METHOD *meth3;
255#endif
256
257 if(!ENGINE_set_id(e, engine_aep_id) ||
258 !ENGINE_set_name(e, engine_aep_name) ||
259#ifndef OPENSSL_NO_RSA
260 !ENGINE_set_RSA(e, &aep_rsa) ||
261#endif
262#ifndef OPENSSL_NO_DSA
263 !ENGINE_set_DSA(e, &aep_dsa) ||
264#endif
265#ifndef OPENSSL_NO_DH
266 !ENGINE_set_DH(e, &aep_dh) ||
267#endif
268#ifdef AEPRAND
269 !ENGINE_set_RAND(e, &aep_random) ||
270#endif
271 !ENGINE_set_init_function(e, aep_init) ||
272 !ENGINE_set_destroy_function(e, aep_destroy) ||
273 !ENGINE_set_finish_function(e, aep_finish) ||
274 !ENGINE_set_ctrl_function(e, aep_ctrl) ||
275 !ENGINE_set_cmd_defns(e, aep_cmd_defns))
276 return 0;
277
278#ifndef OPENSSL_NO_RSA
279 /* We know that the "PKCS1_SSLeay()" functions hook properly
280 * to the aep-specific mod_exp and mod_exp_crt so we use
281 * those functions. NB: We don't use ENGINE_openssl() or
282 * anything "more generic" because something like the RSAref
283 * code may not hook properly, and if you own one of these
284 * cards then you have the right to do RSA operations on it
285 * anyway! */
286 meth1 = RSA_PKCS1_SSLeay();
287 aep_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
288 aep_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
289 aep_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
290 aep_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
291#endif
292
293
294#ifndef OPENSSL_NO_DSA
295 /* Use the DSA_OpenSSL() method and just hook the mod_exp-ish
296 * bits. */
297 meth2 = DSA_OpenSSL();
298 aep_dsa.dsa_do_sign = meth2->dsa_do_sign;
299 aep_dsa.dsa_sign_setup = meth2->dsa_sign_setup;
300 aep_dsa.dsa_do_verify = meth2->dsa_do_verify;
301
302 aep_dsa = *DSA_get_default_method();
303 aep_dsa.dsa_mod_exp = aep_dsa_mod_exp;
304 aep_dsa.bn_mod_exp = aep_mod_exp_dsa;
305#endif
306
307#ifndef OPENSSL_NO_DH
308 /* Much the same for Diffie-Hellman */
309 meth3 = DH_OpenSSL();
310 aep_dh.generate_key = meth3->generate_key;
311 aep_dh.compute_key = meth3->compute_key;
312 aep_dh.bn_mod_exp = meth3->bn_mod_exp;
313#endif
314
315 /* Ensure the aep error handling is set up */
316 ERR_load_AEPHK_strings();
317
318 return 1;
319}
320
321#ifdef ENGINE_DYNAMIC_SUPPORT
322static int bind_helper(ENGINE *e, const char *id)
323 {
324 if(id && (strcmp(id, engine_aep_id) != 0))
325 return 0;
326 if(!bind_aep(e))
327 return 0;
328 return 1;
329 }
330IMPLEMENT_DYNAMIC_CHECK_FN()
331IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
332#else
333static ENGINE *engine_aep(void)
334 {
335 ENGINE *ret = ENGINE_new();
336 if(!ret)
337 return NULL;
338 if(!bind_aep(ret))
339 {
340 ENGINE_free(ret);
341 return NULL;
342 }
343 return ret;
344 }
345
346void ENGINE_load_aep(void)
347 {
348 /* Copied from eng_[openssl|dyn].c */
349 ENGINE *toadd = engine_aep();
350 if(!toadd) return;
351 ENGINE_add(toadd);
352 ENGINE_free(toadd);
353 ERR_clear_error();
354 }
355#endif
356
357/* This is a process-global DSO handle used for loading and unloading
358 * the Aep library. NB: This is only set (or unset) during an
359 * init() or finish() call (reference counts permitting) and they're
360 * operating with global locks, so this should be thread-safe
361 * implicitly. */
362static DSO *aep_dso = NULL;
363
364/* These are the static string constants for the DSO file name and the function
365 * symbol names to bind to.
366*/
367static const char *AEP_LIBNAME = NULL;
368static const char *get_AEP_LIBNAME(void)
369 {
370 if(AEP_LIBNAME)
371 return AEP_LIBNAME;
372 return "aep";
373 }
374static void free_AEP_LIBNAME(void)
375 {
376 if(AEP_LIBNAME)
377 OPENSSL_free((void*)AEP_LIBNAME);
378 AEP_LIBNAME = NULL;
379 }
380static long set_AEP_LIBNAME(const char *name)
381 {
382 free_AEP_LIBNAME();
383 return ((AEP_LIBNAME = BUF_strdup(name)) != NULL ? 1 : 0);
384 }
385
386static const char *AEP_F1 = "AEP_ModExp";
387static const char *AEP_F2 = "AEP_ModExpCrt";
388#ifdef AEPRAND
389static const char *AEP_F3 = "AEP_GenRandom";
390#endif
391static const char *AEP_F4 = "AEP_Finalize";
392static const char *AEP_F5 = "AEP_Initialize";
393static const char *AEP_F6 = "AEP_OpenConnection";
394static const char *AEP_F7 = "AEP_SetBNCallBacks";
395static const char *AEP_F8 = "AEP_CloseConnection";
396
397/* These are the function pointers that are (un)set when the library has
398 * successfully (un)loaded. */
399static t_AEP_OpenConnection *p_AEP_OpenConnection = NULL;
400static t_AEP_CloseConnection *p_AEP_CloseConnection = NULL;
401static t_AEP_ModExp *p_AEP_ModExp = NULL;
402static t_AEP_ModExpCrt *p_AEP_ModExpCrt = NULL;
403#ifdef AEPRAND
404static t_AEP_GenRandom *p_AEP_GenRandom = NULL;
405#endif
406static t_AEP_Initialize *p_AEP_Initialize = NULL;
407static t_AEP_Finalize *p_AEP_Finalize = NULL;
408static t_AEP_SetBNCallBacks *p_AEP_SetBNCallBacks = NULL;
409
410/* (de)initialisation functions. */
411static int aep_init(ENGINE *e)
412 {
413 t_AEP_ModExp *p1;
414 t_AEP_ModExpCrt *p2;
415#ifdef AEPRAND
416 t_AEP_GenRandom *p3;
417#endif
418 t_AEP_Finalize *p4;
419 t_AEP_Initialize *p5;
420 t_AEP_OpenConnection *p6;
421 t_AEP_SetBNCallBacks *p7;
422 t_AEP_CloseConnection *p8;
423
424 int to_return = 0;
425
426 if(aep_dso != NULL)
427 {
428 AEPHKerr(AEPHK_F_AEP_INIT,AEPHK_R_ALREADY_LOADED);
429 goto err;
430 }
431 /* Attempt to load libaep.so. */
432
433 aep_dso = DSO_load(NULL, get_AEP_LIBNAME(), NULL, 0);
434
435 if(aep_dso == NULL)
436 {
437 AEPHKerr(AEPHK_F_AEP_INIT,AEPHK_R_NOT_LOADED);
438 goto err;
439 }
440
441 if( !(p1 = (t_AEP_ModExp *) DSO_bind_func( aep_dso,AEP_F1)) ||
442 !(p2 = (t_AEP_ModExpCrt*) DSO_bind_func( aep_dso,AEP_F2)) ||
443#ifdef AEPRAND
444 !(p3 = (t_AEP_GenRandom*) DSO_bind_func( aep_dso,AEP_F3)) ||
445#endif
446 !(p4 = (t_AEP_Finalize*) DSO_bind_func( aep_dso,AEP_F4)) ||
447 !(p5 = (t_AEP_Initialize*) DSO_bind_func( aep_dso,AEP_F5)) ||
448 !(p6 = (t_AEP_OpenConnection*) DSO_bind_func( aep_dso,AEP_F6)) ||
449 !(p7 = (t_AEP_SetBNCallBacks*) DSO_bind_func( aep_dso,AEP_F7)) ||
450 !(p8 = (t_AEP_CloseConnection*) DSO_bind_func( aep_dso,AEP_F8)))
451 {
452 AEPHKerr(AEPHK_F_AEP_INIT,AEPHK_R_NOT_LOADED);
453 goto err;
454 }
455
456 /* Copy the pointers */
457
458 p_AEP_ModExp = p1;
459 p_AEP_ModExpCrt = p2;
460#ifdef AEPRAND
461 p_AEP_GenRandom = p3;
462#endif
463 p_AEP_Finalize = p4;
464 p_AEP_Initialize = p5;
465 p_AEP_OpenConnection = p6;
466 p_AEP_SetBNCallBacks = p7;
467 p_AEP_CloseConnection = p8;
468
469 to_return = 1;
470
471 return to_return;
472
473 err:
474
475 if(aep_dso)
476 DSO_free(aep_dso);
477 aep_dso = NULL;
478
479 p_AEP_OpenConnection = NULL;
480 p_AEP_ModExp = NULL;
481 p_AEP_ModExpCrt = NULL;
482#ifdef AEPRAND
483 p_AEP_GenRandom = NULL;
484#endif
485 p_AEP_Initialize = NULL;
486 p_AEP_Finalize = NULL;
487 p_AEP_SetBNCallBacks = NULL;
488 p_AEP_CloseConnection = NULL;
489
490 return to_return;
491 }
492
493/* Destructor (complements the "ENGINE_aep()" constructor) */
494static int aep_destroy(ENGINE *e)
495 {
496 free_AEP_LIBNAME();
497 ERR_unload_AEPHK_strings();
498 return 1;
499 }
500
501static int aep_finish(ENGINE *e)
502 {
503 int to_return = 0, in_use;
504 AEP_RV rv;
505
506 if(aep_dso == NULL)
507 {
508 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_NOT_LOADED);
509 goto err;
510 }
511
512 rv = aep_close_all_connections(0, &in_use);
513 if (rv != AEP_R_OK)
514 {
515 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_CLOSE_HANDLES_FAILED);
516 goto err;
517 }
518 if (in_use)
519 {
520 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_CONNECTIONS_IN_USE);
521 goto err;
522 }
523
524 rv = p_AEP_Finalize();
525 if (rv != AEP_R_OK)
526 {
527 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_FINALIZE_FAILED);
528 goto err;
529 }
530
531 if(!DSO_free(aep_dso))
532 {
533 AEPHKerr(AEPHK_F_AEP_FINISH,AEPHK_R_UNIT_FAILURE);
534 goto err;
535 }
536
537 aep_dso = NULL;
538 p_AEP_CloseConnection = NULL;
539 p_AEP_OpenConnection = NULL;
540 p_AEP_ModExp = NULL;
541 p_AEP_ModExpCrt = NULL;
542#ifdef AEPRAND
543 p_AEP_GenRandom = NULL;
544#endif
545 p_AEP_Initialize = NULL;
546 p_AEP_Finalize = NULL;
547 p_AEP_SetBNCallBacks = NULL;
548
549 to_return = 1;
550 err:
551 return to_return;
552 }
553
554static int aep_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
555 {
556 int initialised = ((aep_dso == NULL) ? 0 : 1);
557 switch(cmd)
558 {
559 case AEP_CMD_SO_PATH:
560 if(p == NULL)
561 {
562 AEPHKerr(AEPHK_F_AEP_CTRL,
563 ERR_R_PASSED_NULL_PARAMETER);
564 return 0;
565 }
566 if(initialised)
567 {
568 AEPHKerr(AEPHK_F_AEP_CTRL,
569 AEPHK_R_ALREADY_LOADED);
570 return 0;
571 }
572 return set_AEP_LIBNAME((const char*)p);
573 default:
574 break;
575 }
576 AEPHKerr(AEPHK_F_AEP_CTRL,AEPHK_R_CTRL_COMMAND_NOT_IMPLEMENTED);
577 return 0;
578 }
579
580static int aep_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
581 const BIGNUM *m, BN_CTX *ctx)
582 {
583 int to_return = 0;
584 int r_len = 0;
585 AEP_CONNECTION_HNDL hConnection;
586 AEP_RV rv;
587
588 r_len = BN_num_bits(m);
589
590 /* Perform in software if modulus is too large for hardware. */
591
592 if (r_len > max_key_len){
593 AEPHKerr(AEPHK_F_AEP_MOD_EXP, AEPHK_R_SIZE_TOO_LARGE_OR_TOO_SMALL);
594 return BN_mod_exp(r, a, p, m, ctx);
595 }
596
597 /*Grab a connection from the pool*/
598 rv = aep_get_connection(&hConnection);
599 if (rv != AEP_R_OK)
600 {
601 AEPHKerr(AEPHK_F_AEP_MOD_EXP,AEPHK_R_GET_HANDLE_FAILED);
602 return BN_mod_exp(r, a, p, m, ctx);
603 }
604
605 /*To the card with the mod exp*/
606 rv = p_AEP_ModExp(hConnection,(void*)a, (void*)p,(void*)m, (void*)r,NULL);
607
608 if (rv != AEP_R_OK)
609 {
610 AEPHKerr(AEPHK_F_AEP_MOD_EXP,AEPHK_R_MOD_EXP_FAILED);
611 rv = aep_close_connection(hConnection);
612 return BN_mod_exp(r, a, p, m, ctx);
613 }
614
615 /*Return the connection to the pool*/
616 rv = aep_return_connection(hConnection);
617 if (rv != AEP_R_OK)
618 {
619 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_RETURN_CONNECTION_FAILED);
620 goto err;
621 }
622
623 to_return = 1;
624 err:
625 return to_return;
626 }
627
628static AEP_RV aep_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
629 const BIGNUM *q, const BIGNUM *dmp1,
630 const BIGNUM *dmq1,const BIGNUM *iqmp, BN_CTX *ctx)
631 {
632 AEP_RV rv = AEP_R_OK;
633 AEP_CONNECTION_HNDL hConnection;
634
635 /*Grab a connection from the pool*/
636 rv = aep_get_connection(&hConnection);
637 if (rv != AEP_R_OK)
638 {
639 AEPHKerr(AEPHK_F_AEP_MOD_EXP_CRT,AEPHK_R_GET_HANDLE_FAILED);
640 return FAIL_TO_SW;
641 }
642
643 /*To the card with the mod exp*/
644 rv = p_AEP_ModExpCrt(hConnection,(void*)a, (void*)p, (void*)q, (void*)dmp1,(void*)dmq1,
645 (void*)iqmp,(void*)r,NULL);
646 if (rv != AEP_R_OK)
647 {
648 AEPHKerr(AEPHK_F_AEP_MOD_EXP_CRT,AEPHK_R_MOD_EXP_CRT_FAILED);
649 rv = aep_close_connection(hConnection);
650 return FAIL_TO_SW;
651 }
652
653 /*Return the connection to the pool*/
654 rv = aep_return_connection(hConnection);
655 if (rv != AEP_R_OK)
656 {
657 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_RETURN_CONNECTION_FAILED);
658 goto err;
659 }
660
661 err:
662 return rv;
663 }
664
665
666#ifdef AEPRAND
667static int aep_rand(unsigned char *buf,int len )
668 {
669 AEP_RV rv = AEP_R_OK;
670 AEP_CONNECTION_HNDL hConnection;
671
672 CRYPTO_w_lock(CRYPTO_LOCK_RAND);
673
674 /*Can the request be serviced with what's already in the buffer?*/
675 if (len <= rand_block_bytes)
676 {
677 memcpy(buf, &rand_block[RAND_BLK_SIZE - rand_block_bytes], len);
678 rand_block_bytes -= len;
679 CRYPTO_w_unlock(CRYPTO_LOCK_RAND);
680 }
681 else
682 /*If not the get another block of random bytes*/
683 {
684 CRYPTO_w_unlock(CRYPTO_LOCK_RAND);
685
686 rv = aep_get_connection(&hConnection);
687 if (rv != AEP_R_OK)
688 {
689 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_GET_HANDLE_FAILED);
690 goto err_nounlock;
691 }
692
693 if (len > RAND_BLK_SIZE)
694 {
695 rv = p_AEP_GenRandom(hConnection, len, 2, buf, NULL);
696 if (rv != AEP_R_OK)
697 {
698 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_GET_RANDOM_FAILED);
699 goto err_nounlock;
700 }
701 }
702 else
703 {
704 CRYPTO_w_lock(CRYPTO_LOCK_RAND);
705
706 rv = p_AEP_GenRandom(hConnection, RAND_BLK_SIZE, 2, &rand_block[0], NULL);
707 if (rv != AEP_R_OK)
708 {
709 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_GET_RANDOM_FAILED);
710
711 goto err;
712 }
713
714 rand_block_bytes = RAND_BLK_SIZE;
715
716 memcpy(buf, &rand_block[RAND_BLK_SIZE - rand_block_bytes], len);
717 rand_block_bytes -= len;
718
719 CRYPTO_w_unlock(CRYPTO_LOCK_RAND);
720 }
721
722 rv = aep_return_connection(hConnection);
723 if (rv != AEP_R_OK)
724 {
725 AEPHKerr(AEPHK_F_AEP_RAND,AEPHK_R_RETURN_CONNECTION_FAILED);
726
727 goto err_nounlock;
728 }
729 }
730
731 return 1;
732 err:
733 CRYPTO_w_unlock(CRYPTO_LOCK_RAND);
734 err_nounlock:
735 return 0;
736 }
737
738static int aep_rand_status(void)
739{
740 return 1;
741}
742#endif
743
744#ifndef OPENSSL_NO_RSA
745static int aep_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
746 {
747 BN_CTX *ctx = NULL;
748 int to_return = 0;
749 AEP_RV rv = AEP_R_OK;
750
751 if ((ctx = BN_CTX_new()) == NULL)
752 goto err;
753
754 if (!aep_dso)
755 {
756 AEPHKerr(AEPHK_F_AEP_RSA_MOD_EXP,AEPHK_R_NOT_LOADED);
757 goto err;
758 }
759
760 /*See if we have all the necessary bits for a crt*/
761 if (rsa->q && rsa->dmp1 && rsa->dmq1 && rsa->iqmp)
762 {
763 rv = aep_mod_exp_crt(r0,I,rsa->p,rsa->q, rsa->dmp1,rsa->dmq1,rsa->iqmp,ctx);
764
765 if (rv == FAIL_TO_SW){
766 const RSA_METHOD *meth = RSA_PKCS1_SSLeay();
767 to_return = (*meth->rsa_mod_exp)(r0, I, rsa);
768 goto err;
769 }
770 else if (rv != AEP_R_OK)
771 goto err;
772 }
773 else
774 {
775 if (!rsa->d || !rsa->n)
776 {
777 AEPHKerr(AEPHK_F_AEP_RSA_MOD_EXP,AEPHK_R_MISSING_KEY_COMPONENTS);
778 goto err;
779 }
780
781 rv = aep_mod_exp(r0,I,rsa->d,rsa->n,ctx);
782 if (rv != AEP_R_OK)
783 goto err;
784
785 }
786
787 to_return = 1;
788
789 err:
790 if(ctx)
791 BN_CTX_free(ctx);
792 return to_return;
793}
794#endif
795
796#ifndef OPENSSL_NO_DSA
797static int aep_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
798 BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
799 BN_CTX *ctx, BN_MONT_CTX *in_mont)
800 {
801 BIGNUM t;
802 int to_return = 0;
803 BN_init(&t);
804
805 /* let rr = a1 ^ p1 mod m */
806 if (!aep_mod_exp(rr,a1,p1,m,ctx)) goto end;
807 /* let t = a2 ^ p2 mod m */
808 if (!aep_mod_exp(&t,a2,p2,m,ctx)) goto end;
809 /* let rr = rr * t mod m */
810 if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
811 to_return = 1;
812 end:
813 BN_free(&t);
814 return to_return;
815 }
816
817static int aep_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
818 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
819 BN_MONT_CTX *m_ctx)
820 {
821 return aep_mod_exp(r, a, p, m, ctx);
822 }
823#endif
824
825/* This function is aliased to mod_exp (with the mont stuff dropped). */
826static int aep_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
827 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
828 {
829 return aep_mod_exp(r, a, p, m, ctx);
830 }
831
832#ifndef OPENSSL_NO_DH
833/* This function is aliased to mod_exp (with the dh and mont dropped). */
834static int aep_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
835 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
836 BN_MONT_CTX *m_ctx)
837 {
838 return aep_mod_exp(r, a, p, m, ctx);
839 }
840#endif
841
842static AEP_RV aep_get_connection(AEP_CONNECTION_HNDL_PTR phConnection)
843 {
844 int count;
845 AEP_RV rv = AEP_R_OK;
846
847 /*Get the current process id*/
848 pid_t curr_pid;
849
850 CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
851
852 curr_pid = getpid();
853
854 /*Check if this is the first time this is being called from the current
855 process*/
856 if (recorded_pid != curr_pid)
857 {
858 /*Remember our pid so we can check if we're in a new process*/
859 recorded_pid = curr_pid;
860
861 /*Call Finalize to make sure we have not inherited some data
862 from a parent process*/
863 p_AEP_Finalize();
864
865 /*Initialise the AEP API*/
866 rv = p_AEP_Initialize(NULL);
867
868 if (rv != AEP_R_OK)
869 {
870 AEPHKerr(AEPHK_F_AEP_GET_CONNECTION,AEPHK_R_INIT_FAILURE);
871 recorded_pid = 0;
872 goto end;
873 }
874
875 /*Set the AEP big num call back functions*/
876 rv = p_AEP_SetBNCallBacks(&GetBigNumSize, &MakeAEPBigNum,
877 &ConvertAEPBigNum);
878
879 if (rv != AEP_R_OK)
880 {
881 AEPHKerr(AEPHK_F_AEP_GET_CONNECTION,AEPHK_R_SETBNCALLBACK_FAILURE);
882 recorded_pid = 0;
883 goto end;
884 }
885
886#ifdef AEPRAND
887 /*Reset the rand byte count*/
888 rand_block_bytes = 0;
889#endif
890
891 /*Init the structures*/
892 for (count = 0;count < MAX_PROCESS_CONNECTIONS;count ++)
893 {
894 aep_app_conn_table[count].conn_state = NotConnected;
895 aep_app_conn_table[count].conn_hndl = 0;
896 }
897
898 /*Open a connection*/
899 rv = p_AEP_OpenConnection(phConnection);
900
901 if (rv != AEP_R_OK)
902 {
903 AEPHKerr(AEPHK_F_AEP_GET_CONNECTION,AEPHK_R_UNIT_FAILURE);
904 recorded_pid = 0;
905 goto end;
906 }
907
908 aep_app_conn_table[0].conn_state = InUse;
909 aep_app_conn_table[0].conn_hndl = *phConnection;
910 goto end;
911 }
912 /*Check the existing connections to see if we can find a free one*/
913 for (count = 0;count < MAX_PROCESS_CONNECTIONS;count ++)
914 {
915 if (aep_app_conn_table[count].conn_state == Connected)
916 {
917 aep_app_conn_table[count].conn_state = InUse;
918 *phConnection = aep_app_conn_table[count].conn_hndl;
919 goto end;
920 }
921 }
922 /*If no connections available, we're going to have to try
923 to open a new one*/
924 for (count = 0;count < MAX_PROCESS_CONNECTIONS;count ++)
925 {
926 if (aep_app_conn_table[count].conn_state == NotConnected)
927 {
928 /*Open a connection*/
929 rv = p_AEP_OpenConnection(phConnection);
930
931 if (rv != AEP_R_OK)
932 {
933 AEPHKerr(AEPHK_F_AEP_GET_CONNECTION,AEPHK_R_UNIT_FAILURE);
934 goto end;
935 }
936
937 aep_app_conn_table[count].conn_state = InUse;
938 aep_app_conn_table[count].conn_hndl = *phConnection;
939 goto end;
940 }
941 }
942 rv = AEP_R_GENERAL_ERROR;
943 end:
944 CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
945 return rv;
946 }
947
948
949static AEP_RV aep_return_connection(AEP_CONNECTION_HNDL hConnection)
950 {
951 int count;
952
953 CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
954
955 /*Find the connection item that matches this connection handle*/
956 for(count = 0;count < MAX_PROCESS_CONNECTIONS;count ++)
957 {
958 if (aep_app_conn_table[count].conn_hndl == hConnection)
959 {
960 aep_app_conn_table[count].conn_state = Connected;
961 break;
962 }
963 }
964
965 CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
966
967 return AEP_R_OK;
968 }
969
970static AEP_RV aep_close_connection(AEP_CONNECTION_HNDL hConnection)
971 {
972 int count;
973 AEP_RV rv = AEP_R_OK;
974
975 CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
976
977 /*Find the connection item that matches this connection handle*/
978 for(count = 0;count < MAX_PROCESS_CONNECTIONS;count ++)
979 {
980 if (aep_app_conn_table[count].conn_hndl == hConnection)
981 {
982 rv = p_AEP_CloseConnection(aep_app_conn_table[count].conn_hndl);
983 if (rv != AEP_R_OK)
984 goto end;
985 aep_app_conn_table[count].conn_state = NotConnected;
986 aep_app_conn_table[count].conn_hndl = 0;
987 break;
988 }
989 }
990
991 end:
992 CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
993 return rv;
994 }
995
996static AEP_RV aep_close_all_connections(int use_engine_lock, int *in_use)
997 {
998 int count;
999 AEP_RV rv = AEP_R_OK;
1000
1001 *in_use = 0;
1002 if (use_engine_lock) CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
1003 for (count = 0;count < MAX_PROCESS_CONNECTIONS;count ++)
1004 {
1005 switch (aep_app_conn_table[count].conn_state)
1006 {
1007 case Connected:
1008 rv = p_AEP_CloseConnection(aep_app_conn_table[count].conn_hndl);
1009 if (rv != AEP_R_OK)
1010 goto end;
1011 aep_app_conn_table[count].conn_state = NotConnected;
1012 aep_app_conn_table[count].conn_hndl = 0;
1013 break;
1014 case InUse:
1015 (*in_use)++;
1016 break;
1017 case NotConnected:
1018 break;
1019 }
1020 }
1021 end:
1022 if (use_engine_lock) CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
1023 return rv;
1024 }
1025
1026/*BigNum call back functions, used to convert OpenSSL bignums into AEP bignums.
1027 Note only 32bit Openssl build support*/
1028
1029static AEP_RV GetBigNumSize(AEP_VOID_PTR ArbBigNum, AEP_U32* BigNumSize)
1030 {
1031 BIGNUM* bn;
1032
1033 /*Cast the ArbBigNum pointer to our BIGNUM struct*/
1034 bn = (BIGNUM*) ArbBigNum;
1035
1036#ifdef SIXTY_FOUR_BIT_LONG
1037 *BigNumSize = bn->top << 3;
1038#else
1039 /*Size of the bignum in bytes is equal to the bn->top (no of 32 bit
1040 words) multiplies by 4*/
1041 *BigNumSize = bn->top << 2;
1042#endif
1043
1044 return AEP_R_OK;
1045 }
1046
1047static AEP_RV MakeAEPBigNum(AEP_VOID_PTR ArbBigNum, AEP_U32 BigNumSize,
1048 unsigned char* AEP_BigNum)
1049 {
1050 BIGNUM* bn;
1051
1052#ifndef SIXTY_FOUR_BIT_LONG
1053 unsigned char* buf;
1054 int i;
1055#endif
1056
1057 /*Cast the ArbBigNum pointer to our BIGNUM struct*/
1058 bn = (BIGNUM*) ArbBigNum;
1059
1060#ifdef SIXTY_FOUR_BIT_LONG
1061 memcpy(AEP_BigNum, bn->d, BigNumSize);
1062#else
1063 /*Must copy data into a (monotone) least significant byte first format
1064 performing endian conversion if necessary*/
1065 for(i=0;i<bn->top;i++)
1066 {
1067 buf = (unsigned char*)&bn->d[i];
1068
1069 *((AEP_U32*)AEP_BigNum) = (AEP_U32)
1070 ((unsigned) buf[1] << 8 | buf[0]) |
1071 ((unsigned) buf[3] << 8 | buf[2]) << 16;
1072
1073 AEP_BigNum += 4;
1074 }
1075#endif
1076
1077 return AEP_R_OK;
1078 }
1079
1080/*Turn an AEP Big Num back to a user big num*/
1081static AEP_RV ConvertAEPBigNum(void* ArbBigNum, AEP_U32 BigNumSize,
1082 unsigned char* AEP_BigNum)
1083 {
1084 BIGNUM* bn;
1085#ifndef SIXTY_FOUR_BIT_LONG
1086 int i;
1087#endif
1088
1089 bn = (BIGNUM*)ArbBigNum;
1090
1091 /*Expand the result bn so that it can hold our big num.
1092 Size is in bits*/
1093 bn_expand(bn, (int)(BigNumSize << 3));
1094
1095#ifdef SIXTY_FOUR_BIT_LONG
1096 bn->top = BigNumSize >> 3;
1097
1098 if((BigNumSize & 7) != 0)
1099 bn->top++;
1100
1101 memset(bn->d, 0, bn->top << 3);
1102
1103 memcpy(bn->d, AEP_BigNum, BigNumSize);
1104#else
1105 bn->top = BigNumSize >> 2;
1106
1107 for(i=0;i<bn->top;i++)
1108 {
1109 bn->d[i] = (AEP_U32)
1110 ((unsigned) AEP_BigNum[3] << 8 | AEP_BigNum[2]) << 16 |
1111 ((unsigned) AEP_BigNum[1] << 8 | AEP_BigNum[0]);
1112 AEP_BigNum += 4;
1113 }
1114#endif
1115
1116 return AEP_R_OK;
1117}
1118
1119#endif /* !OPENSSL_NO_HW_AEP */
1120#endif /* !OPENSSL_NO_HW */
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-26 09:09:40 +0000