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[thirdparty/openssl.git] / demos / engines / zencod / hw_zencod.c
1 /* crypto/engine/hw_zencod.c */
2 /*
3 * Written by Fred Donnat (frederic.donnat@zencod.com) for "zencod" * engine
4 * integration in order to redirect crypto computing on a crypto * hardware
5 * accelerator zenssl32 ;-) * * Date : 25 jun 2002 * Revision : 17 Ju7 2002
6 * * Version : zencod_engine-0.9.7
7 */
8
9 /* ====================================================================
10 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
22 * distribution.
23 *
24 * 3. All advertising materials mentioning features or use of this
25 * software must display the following acknowledgment:
26 * "This product includes software developed by the OpenSSL Project
27 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
28 *
29 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
30 * endorse or promote products derived from this software without
31 * prior written permission. For written permission, please contact
32 * licensing@OpenSSL.org.
33 *
34 * 5. Products derived from this software may not be called "OpenSSL"
35 * nor may "OpenSSL" appear in their names without prior written
36 * permission of the OpenSSL Project.
37 *
38 * 6. Redistributions of any form whatsoever must retain the following
39 * acknowledgment:
40 * "This product includes software developed by the OpenSSL Project
41 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
44 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
47 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
49 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
50 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
52 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
54 * OF THE POSSIBILITY OF SUCH DAMAGE.
55 * ====================================================================
56 *
57 * This product includes cryptographic software written by Eric Young
58 * (eay@cryptsoft.com). This product includes software written by Tim
59 * Hudson (tjh@cryptsoft.com).
60 *
61 */
62
63 /* ENGINE general include */
64 #include <stdio.h>
65 #include <openssl/crypto.h>
66 #include <openssl/dso.h>
67 #include <openssl/engine.h>
68
69 #ifndef OPENSSL_NO_HW
70 # ifndef OPENSSL_NO_HW_ZENCOD
71
72 # ifdef FLAT_INC
73 # include "hw_zencod.h"
74 # else
75 # include "vendor_defns/hw_zencod.h"
76 # endif
77
78 # define ZENCOD_LIB_NAME "zencod engine"
79 # include "hw_zencod_err.c"
80
81 # define FAIL_TO_SOFTWARE -15
82
83 # define ZEN_LIBRARY "zenbridge"
84
85 # ifdef ZENCOD_TRACING
86 # define PERROR(s) perror(s)
87 # define CHEESE() fputs("## [ZenEngine] ## " __FUNCTION__ "\n", stderr)
88 # else
89 # define PERROR(s)
90 # define CHEESE()
91 # endif
92
93 /* Sorry ;) */
94 # ifndef WIN32
95 static inline void esrever(unsigned char *d, int l)
96 {
97 for (; --l > 0; --l, d++) {
98 *d ^= *(d + l);
99 *(d + l) ^= *d;
100 *d ^= *(d + l);
101 }
102 }
103
104 static inline void ypcmem(unsigned char *d, const unsigned char *s, int l)
105 {
106 for (d += l; l--;)
107 *--d = *s++;
108 }
109 # else
110 static __inline void esrever(unsigned char *d, int l)
111 {
112 for (; --l > 0; --l, d++) {
113 *d ^= *(d + l);
114 *(d + l) ^= *d;
115 *d ^= *(d + l);
116 }
117 }
118
119 static __inline void ypcmem(unsigned char *d, const unsigned char *s, int l)
120 {
121 for (d += l; l--;)
122 *--d = *s++;
123 }
124 # endif
125
126 # define BIGNUM2ZEN(n, bn) (ptr_zencod_init_number((n), \
127 (unsigned long) ((bn)->top * BN_BITS2), \
128 (unsigned char *) ((bn)->d)))
129
130 # define ZEN_BITS(n, bytes) (ptr_zencod_bytes2bits((unsigned char *) (n), (unsigned long) (bytes)))
131 # define ZEN_BYTES(bits) (ptr_zencod_bits2bytes((unsigned long) (bits)))
132
133 /* Function for ENGINE detection and control */
134 static int zencod_destroy(ENGINE *e);
135 static int zencod_init(ENGINE *e);
136 static int zencod_finish(ENGINE *e);
137 static int zencod_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) ());
138
139 /* BIGNUM stuff */
140 static int zencod_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
141 const BIGNUM *m, BN_CTX *ctx);
142
143 /* RSA stuff */
144 # ifndef OPENSSL_NO_RSA
145 static int RSA_zencod_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
146 static int RSA_zencod_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
147 const BIGNUM *m, BN_CTX *ctx,
148 BN_MONT_CTX *m_ctx);
149 # endif
150
151 /* DSA stuff */
152 # ifndef OPENSSL_NO_DSA
153 static int DSA_zencod_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a,
154 const BIGNUM *p, const BIGNUM *m,
155 BN_CTX *ctx, BN_MONT_CTX *m_ctx);
156
157 static DSA_SIG *DSA_zencod_do_sign(const unsigned char *dgst, int dlen,
158 DSA *dsa);
159 static int DSA_zencod_do_verify(const unsigned char *dgst, int dgst_len,
160 DSA_SIG *sig, DSA *dsa);
161 # endif
162
163 /* DH stuff */
164 # ifndef OPENSSL_NO_DH
165 static int DH_zencod_bn_mod_exp(const DH *dh, BIGNUM *r, const BIGNUM *a,
166 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
167 BN_MONT_CTX *m_ctx);
168 static int DH_zencod_generate_key(DH *dh);
169 static int DH_zencod_compute_key(unsigned char *key, const BIGNUM *pub_key,
170 DH *dh);
171 # endif
172
173 /* Rand stuff */
174 static void RAND_zencod_seed(const void *buf, int num);
175 static int RAND_zencod_rand_bytes(unsigned char *buf, int num);
176 static int RAND_zencod_rand_status(void);
177
178 /* Digest Stuff */
179 static int engine_digests(ENGINE *e, const EVP_MD **digest, const int **nids,
180 int nid);
181
182 /* Cipher Stuff */
183 static int engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
184 const int **nids, int nid);
185
186 # define ZENCOD_CMD_SO_PATH ENGINE_CMD_BASE
187 static const ENGINE_CMD_DEFN zencod_cmd_defns[] = {
188 {ZENCOD_CMD_SO_PATH,
189 "SO_PATH",
190 "Specifies the path to the 'zenbridge' shared library",
191 ENGINE_CMD_FLAG_STRING},
192 {0, NULL, NULL, 0}
193 };
194
195 # ifndef OPENSSL_NO_RSA
196 /*
197 * Our internal RSA_METHOD specific to zencod ENGINE providing pointers to
198 * our function
199 */
200 static RSA_METHOD zencod_rsa = {
201 "ZENCOD RSA method",
202 NULL,
203 NULL,
204 NULL,
205 NULL,
206 RSA_zencod_rsa_mod_exp,
207 RSA_zencod_bn_mod_exp,
208 NULL,
209 NULL,
210 0,
211 NULL,
212 NULL,
213 NULL
214 };
215 # endif
216
217 # ifndef OPENSSL_NO_DSA
218 /*
219 * Our internal DSA_METHOD specific to zencod ENGINE providing pointers to
220 * our function
221 */
222 static DSA_METHOD zencod_dsa = {
223 "ZENCOD DSA method",
224 DSA_zencod_do_sign,
225 NULL,
226 DSA_zencod_do_verify,
227 NULL,
228 DSA_zencod_bn_mod_exp,
229 NULL,
230 NULL,
231 0,
232 NULL
233 };
234 # endif
235
236 # ifndef OPENSSL_NO_DH
237 /*
238 * Our internal DH_METHOD specific to zencod ENGINE providing pointers to our
239 * function
240 */
241 static DH_METHOD zencod_dh = {
242 "ZENCOD DH method",
243 DH_zencod_generate_key,
244 DH_zencod_compute_key,
245 DH_zencod_bn_mod_exp,
246 NULL,
247 NULL,
248 0,
249 NULL
250 };
251 # endif
252
253 /*
254 * Our internal RAND_meth specific to zencod ZNGINE providing pointers to our
255 * function
256 */
257 static RAND_METHOD zencod_rand = {
258 RAND_zencod_seed,
259 RAND_zencod_rand_bytes,
260 NULL,
261 NULL,
262 RAND_zencod_rand_bytes,
263 RAND_zencod_rand_status
264 };
265
266 /* Constants used when creating the ENGINE */
267 static const char *engine_zencod_id = "zencod";
268 static const char *engine_zencod_name = "ZENCOD hardware engine support";
269
270 /*
271 * This internal function is used by ENGINE_zencod () and possibly by the
272 * "dynamic" ENGINE support too ;-)
273 */
274 static int bind_helper(ENGINE *e)
275 {
276
277 # ifndef OPENSSL_NO_RSA
278 const RSA_METHOD *meth_rsa;
279 # endif
280 # ifndef OPENSSL_NO_DSA
281 const DSA_METHOD *meth_dsa;
282 # endif
283 # ifndef OPENSSL_NO_DH
284 const DH_METHOD *meth_dh;
285 # endif
286
287 const RAND_METHOD *meth_rand;
288
289 if (!ENGINE_set_id(e, engine_zencod_id) ||
290 !ENGINE_set_name(e, engine_zencod_name) ||
291 # ifndef OPENSSL_NO_RSA
292 !ENGINE_set_RSA(e, &zencod_rsa) ||
293 # endif
294 # ifndef OPENSSL_NO_DSA
295 !ENGINE_set_DSA(e, &zencod_dsa) ||
296 # endif
297 # ifndef OPENSSL_NO_DH
298 !ENGINE_set_DH(e, &zencod_dh) ||
299 # endif
300 !ENGINE_set_RAND(e, &zencod_rand) ||
301 !ENGINE_set_destroy_function(e, zencod_destroy) ||
302 !ENGINE_set_init_function(e, zencod_init) ||
303 !ENGINE_set_finish_function(e, zencod_finish) ||
304 !ENGINE_set_ctrl_function(e, zencod_ctrl) ||
305 !ENGINE_set_cmd_defns(e, zencod_cmd_defns) ||
306 !ENGINE_set_digests(e, engine_digests) ||
307 !ENGINE_set_ciphers(e, engine_ciphers)) {
308 return 0;
309 }
310 # ifndef OPENSSL_NO_RSA
311 /*
312 * We know that the "PKCS1_SSLeay()" functions hook properly to the
313 * Zencod-specific mod_exp and mod_exp_crt so we use those functions. NB:
314 * We don't use ENGINE_openssl() or anything "more generic" because
315 * something like the RSAref code may not hook properly, and if you own
316 * one of these cards then you have the right to do RSA operations on it
317 * anyway!
318 */
319 meth_rsa = RSA_PKCS1_SSLeay();
320
321 zencod_rsa.rsa_pub_enc = meth_rsa->rsa_pub_enc;
322 zencod_rsa.rsa_pub_dec = meth_rsa->rsa_pub_dec;
323 zencod_rsa.rsa_priv_enc = meth_rsa->rsa_priv_enc;
324 zencod_rsa.rsa_priv_dec = meth_rsa->rsa_priv_dec;
325 /* meth_rsa->rsa_mod_exp */
326 /* meth_rsa->bn_mod_exp */
327 zencod_rsa.init = meth_rsa->init;
328 zencod_rsa.finish = meth_rsa->finish;
329 # endif
330
331 # ifndef OPENSSL_NO_DSA
332 /*
333 * We use OpenSSL meth to supply what we don't provide ;-*)
334 */
335 meth_dsa = DSA_OpenSSL();
336
337 /* meth_dsa->dsa_do_sign */
338 zencod_dsa.dsa_sign_setup = meth_dsa->dsa_sign_setup;
339 /* meth_dsa->dsa_do_verify */
340 zencod_dsa.dsa_mod_exp = meth_dsa->dsa_mod_exp;
341 /* zencod_dsa.bn_mod_exp = meth_dsa->bn_mod_exp ; */
342 zencod_dsa.init = meth_dsa->init;
343 zencod_dsa.finish = meth_dsa->finish;
344 # endif
345
346 # ifndef OPENSSL_NO_DH
347 /*
348 * We use OpenSSL meth to supply what we don't provide ;-*)
349 */
350 meth_dh = DH_OpenSSL();
351
352 /* zencod_dh.generate_key = meth_dh->generate_key ; */
353 /* zencod_dh.compute_key = meth_dh->compute_key ; */
354 /* zencod_dh.bn_mod_exp = meth_dh->bn_mod_exp ; */
355 zencod_dh.init = meth_dh->init;
356 zencod_dh.finish = meth_dh->finish;
357
358 # endif
359
360 /*
361 * We use OpenSSL (SSLeay) meth to supply what we don't provide ;-*)
362 */
363 meth_rand = RAND_SSLeay();
364
365 /* meth_rand->seed ; */
366 /* zencod_rand.seed = meth_rand->seed ; */
367 /* meth_rand->bytes ; */
368 /* zencod_rand.bytes = meth_rand->bytes ; */
369 zencod_rand.cleanup = meth_rand->cleanup;
370 zencod_rand.add = meth_rand->add;
371 /* meth_rand->pseudorand ; */
372 /* zencod_rand.pseudorand = meth_rand->pseudorand ; */
373 /* zencod_rand.status = meth_rand->status ; */
374 /* meth_rand->status ; */
375
376 /* Ensure the zencod error handling is set up */
377 ERR_load_ZENCOD_strings();
378 return 1;
379 }
380
381 /*
382 * As this is only ever called once, there's no need for locking (indeed -
383 * the lock will already be held by our caller!!!)
384 */
385 static ENGINE *ENGINE_zencod(void)
386 {
387
388 ENGINE *eng = ENGINE_new();
389
390 if (!eng) {
391 return NULL;
392 }
393 if (!bind_helper(eng)) {
394 ENGINE_free(eng);
395 return NULL;
396 }
397
398 return eng;
399 }
400
401 # ifdef ENGINE_DYNAMIC_SUPPORT
402 static
403 # endif
404 void ENGINE_load_zencod(void)
405 {
406 /* Copied from eng_[openssl|dyn].c */
407 ENGINE *toadd = ENGINE_zencod();
408 if (!toadd)
409 return;
410 ENGINE_add(toadd);
411 ENGINE_free(toadd);
412 ERR_clear_error();
413 }
414
415 /*
416 * This is a process-global DSO handle used for loading and unloading the
417 * ZENBRIDGE library. NB: This is only set (or unset) during an * init () or
418 * finish () call (reference counts permitting) and they're * operating with
419 * global locks, so this should be thread-safe * implicitly.
420 */
421 static DSO *zencod_dso = NULL;
422
423 static t_zencod_test *ptr_zencod_test = NULL;
424 static t_zencod_bytes2bits *ptr_zencod_bytes2bits = NULL;
425 static t_zencod_bits2bytes *ptr_zencod_bits2bytes = NULL;
426 static t_zencod_new_number *ptr_zencod_new_number = NULL;
427 static t_zencod_init_number *ptr_zencod_init_number = NULL;
428
429 static t_zencod_rsa_mod_exp *ptr_zencod_rsa_mod_exp = NULL;
430 static t_zencod_rsa_mod_exp_crt *ptr_zencod_rsa_mod_exp_crt = NULL;
431 static t_zencod_dsa_do_sign *ptr_zencod_dsa_do_sign = NULL;
432 static t_zencod_dsa_do_verify *ptr_zencod_dsa_do_verify = NULL;
433 static t_zencod_dh_generate_key *ptr_zencod_dh_generate_key = NULL;
434 static t_zencod_dh_compute_key *ptr_zencod_dh_compute_key = NULL;
435 static t_zencod_rand_bytes *ptr_zencod_rand_bytes = NULL;
436 static t_zencod_math_mod_exp *ptr_zencod_math_mod_exp = NULL;
437
438 static t_zencod_md5_init *ptr_zencod_md5_init = NULL;
439 static t_zencod_md5_update *ptr_zencod_md5_update = NULL;
440 static t_zencod_md5_do_final *ptr_zencod_md5_do_final = NULL;
441 static t_zencod_sha1_init *ptr_zencod_sha1_init = NULL;
442 static t_zencod_sha1_update *ptr_zencod_sha1_update = NULL;
443 static t_zencod_sha1_do_final *ptr_zencod_sha1_do_final = NULL;
444
445 static t_zencod_xdes_cipher *ptr_zencod_xdes_cipher = NULL;
446 static t_zencod_rc4_cipher *ptr_zencod_rc4_cipher = NULL;
447
448 /*
449 * These are the static string constants for the DSO file name and the
450 * function symbol names to bind to.
451 */
452 static const char *ZENCOD_LIBNAME = ZEN_LIBRARY;
453
454 static const char *ZENCOD_Fct_0 = "test_device";
455 static const char *ZENCOD_Fct_1 = "zenbridge_bytes2bits";
456 static const char *ZENCOD_Fct_2 = "zenbridge_bits2bytes";
457 static const char *ZENCOD_Fct_3 = "zenbridge_new_number";
458 static const char *ZENCOD_Fct_4 = "zenbridge_init_number";
459
460 static const char *ZENCOD_Fct_exp_1 = "zenbridge_rsa_mod_exp";
461 static const char *ZENCOD_Fct_exp_2 = "zenbridge_rsa_mod_exp_crt";
462 static const char *ZENCOD_Fct_dsa_1 = "zenbridge_dsa_do_sign";
463 static const char *ZENCOD_Fct_dsa_2 = "zenbridge_dsa_do_verify";
464 static const char *ZENCOD_Fct_dh_1 = "zenbridge_dh_generate_key";
465 static const char *ZENCOD_Fct_dh_2 = "zenbridge_dh_compute_key";
466 static const char *ZENCOD_Fct_rand_1 = "zenbridge_rand_bytes";
467 static const char *ZENCOD_Fct_math_1 = "zenbridge_math_mod_exp";
468
469 static const char *ZENCOD_Fct_md5_1 = "zenbridge_md5_init";
470 static const char *ZENCOD_Fct_md5_2 = "zenbridge_md5_update";
471 static const char *ZENCOD_Fct_md5_3 = "zenbridge_md5_do_final";
472 static const char *ZENCOD_Fct_sha1_1 = "zenbridge_sha1_init";
473 static const char *ZENCOD_Fct_sha1_2 = "zenbridge_sha1_update";
474 static const char *ZENCOD_Fct_sha1_3 = "zenbridge_sha1_do_final";
475
476 static const char *ZENCOD_Fct_xdes_1 = "zenbridge_xdes_cipher";
477 static const char *ZENCOD_Fct_rc4_1 = "zenbridge_rc4_cipher";
478
479 /*
480 * Destructor (complements the "ENGINE_zencod ()" constructor)
481 */
482 static int zencod_destroy(ENGINE *e)
483 {
484
485 ERR_unload_ZENCOD_strings();
486
487 return 1;
488 }
489
490 /*
491 * (de)initialisation functions. Control Function
492 */
493 static int zencod_init(ENGINE *e)
494 {
495
496 t_zencod_test *ptr_0;
497 t_zencod_bytes2bits *ptr_1;
498 t_zencod_bits2bytes *ptr_2;
499 t_zencod_new_number *ptr_3;
500 t_zencod_init_number *ptr_4;
501 t_zencod_rsa_mod_exp *ptr_exp_1;
502 t_zencod_rsa_mod_exp_crt *ptr_exp_2;
503 t_zencod_dsa_do_sign *ptr_dsa_1;
504 t_zencod_dsa_do_verify *ptr_dsa_2;
505 t_zencod_dh_generate_key *ptr_dh_1;
506 t_zencod_dh_compute_key *ptr_dh_2;
507 t_zencod_rand_bytes *ptr_rand_1;
508 t_zencod_math_mod_exp *ptr_math_1;
509 t_zencod_md5_init *ptr_md5_1;
510 t_zencod_md5_update *ptr_md5_2;
511 t_zencod_md5_do_final *ptr_md5_3;
512 t_zencod_sha1_init *ptr_sha1_1;
513 t_zencod_sha1_update *ptr_sha1_2;
514 t_zencod_sha1_do_final *ptr_sha1_3;
515 t_zencod_xdes_cipher *ptr_xdes_1;
516 t_zencod_rc4_cipher *ptr_rc4_1;
517
518 CHEESE();
519
520 /*
521 * We Should add some tests for non NULL parameters or bad value !!
522 * Stuff to be done ...
523 */
524
525 if (zencod_dso != NULL) {
526 ZENCODerr(ZENCOD_F_ZENCOD_INIT, ZENCOD_R_ALREADY_LOADED);
527 goto err;
528 }
529 /*
530 * Trying to load the Library "cryptozen"
531 */
532 zencod_dso = DSO_load(NULL, ZENCOD_LIBNAME, NULL, 0);
533 if (zencod_dso == NULL) {
534 ZENCODerr(ZENCOD_F_ZENCOD_INIT, ZENCOD_R_DSO_FAILURE);
535 goto err;
536 }
537
538 /*
539 * Trying to load Function from the Library
540 */
541 if (!
542 (ptr_1 =
543 (t_zencod_bytes2bits *) DSO_bind_func(zencod_dso, ZENCOD_Fct_1))
544 || !(ptr_2 = (t_zencod_bits2bytes *) DSO_bind_func(zencod_dso, ZENCOD_Fct_2))
545 || !(ptr_3 = (t_zencod_new_number *) DSO_bind_func(zencod_dso, ZENCOD_Fct_3))
546 || !(ptr_4 = (t_zencod_init_number *) DSO_bind_func(zencod_dso, ZENCOD_Fct_4))
547 || !(ptr_exp_1 =
548 (t_zencod_rsa_mod_exp *) DSO_bind_func(zencod_dso, ZENCOD_Fct_exp_1))
549 || !(ptr_exp_2 =
550 (t_zencod_rsa_mod_exp_crt *) DSO_bind_func(zencod_dso, ZENCOD_Fct_exp_2))
551 || !(ptr_dsa_1 =
552 (t_zencod_dsa_do_sign *) DSO_bind_func(zencod_dso, ZENCOD_Fct_dsa_1))
553 || !(ptr_dsa_2 =
554 (t_zencod_dsa_do_verify *) DSO_bind_func(zencod_dso, ZENCOD_Fct_dsa_2))
555 || !(ptr_dh_1 =
556 (t_zencod_dh_generate_key *) DSO_bind_func(zencod_dso, ZENCOD_Fct_dh_1))
557 || !(ptr_dh_2 =
558 (t_zencod_dh_compute_key *) DSO_bind_func(zencod_dso, ZENCOD_Fct_dh_2))
559 || !(ptr_rand_1 =
560 (t_zencod_rand_bytes *) DSO_bind_func(zencod_dso, ZENCOD_Fct_rand_1))
561 || !(ptr_math_1 =
562 (t_zencod_math_mod_exp *) DSO_bind_func(zencod_dso, ZENCOD_Fct_math_1))
563 || !(ptr_0 = (t_zencod_test *) DSO_bind_func(zencod_dso, ZENCOD_Fct_0))
564 || !(ptr_md5_1 =
565 (t_zencod_md5_init *) DSO_bind_func(zencod_dso, ZENCOD_Fct_md5_1))
566 || !(ptr_md5_2 =
567 (t_zencod_md5_update *) DSO_bind_func(zencod_dso, ZENCOD_Fct_md5_2))
568 || !(ptr_md5_3 =
569 (t_zencod_md5_do_final *) DSO_bind_func(zencod_dso, ZENCOD_Fct_md5_3))
570 || !(ptr_sha1_1 =
571 (t_zencod_sha1_init *) DSO_bind_func(zencod_dso, ZENCOD_Fct_sha1_1))
572 || !(ptr_sha1_2 =
573 (t_zencod_sha1_update *) DSO_bind_func(zencod_dso, ZENCOD_Fct_sha1_2))
574 || !(ptr_sha1_3 =
575 (t_zencod_sha1_do_final *) DSO_bind_func(zencod_dso, ZENCOD_Fct_sha1_3))
576 || !(ptr_xdes_1 =
577 (t_zencod_xdes_cipher *) DSO_bind_func(zencod_dso, ZENCOD_Fct_xdes_1))
578 || !(ptr_rc4_1 =
579 (t_zencod_rc4_cipher *) DSO_bind_func(zencod_dso, ZENCOD_Fct_rc4_1))) {
580
581 ZENCODerr(ZENCOD_F_ZENCOD_INIT, ZENCOD_R_DSO_FAILURE);
582 goto err;
583 }
584
585 /*
586 * The function from "cryptozen" Library have been correctly loaded so
587 * copy them
588 */
589 ptr_zencod_test = ptr_0;
590 ptr_zencod_bytes2bits = ptr_1;
591 ptr_zencod_bits2bytes = ptr_2;
592 ptr_zencod_new_number = ptr_3;
593 ptr_zencod_init_number = ptr_4;
594 ptr_zencod_rsa_mod_exp = ptr_exp_1;
595 ptr_zencod_rsa_mod_exp_crt = ptr_exp_2;
596 ptr_zencod_dsa_do_sign = ptr_dsa_1;
597 ptr_zencod_dsa_do_verify = ptr_dsa_2;
598 ptr_zencod_dh_generate_key = ptr_dh_1;
599 ptr_zencod_dh_compute_key = ptr_dh_2;
600 ptr_zencod_rand_bytes = ptr_rand_1;
601 ptr_zencod_math_mod_exp = ptr_math_1;
602 ptr_zencod_test = ptr_0;
603 ptr_zencod_md5_init = ptr_md5_1;
604 ptr_zencod_md5_update = ptr_md5_2;
605 ptr_zencod_md5_do_final = ptr_md5_3;
606 ptr_zencod_sha1_init = ptr_sha1_1;
607 ptr_zencod_sha1_update = ptr_sha1_2;
608 ptr_zencod_sha1_do_final = ptr_sha1_3;
609 ptr_zencod_xdes_cipher = ptr_xdes_1;
610 ptr_zencod_rc4_cipher = ptr_rc4_1;
611
612 /*
613 * We should peform a test to see if there is actually any unit runnig on
614 * the system ... Even if the cryptozen library is loaded the module coul
615 * not be loaded on the system ... For now we may just open and close the
616 * device !!
617 */
618
619 if (ptr_zencod_test() != 0) {
620 ZENCODerr(ZENCOD_F_ZENCOD_INIT, ZENCOD_R_UNIT_FAILURE);
621 goto err;
622 }
623
624 return 1;
625 err:
626 DSO_free(zencod_dso);
627 zencod_dso = NULL;
628 ptr_zencod_bytes2bits = NULL;
629 ptr_zencod_bits2bytes = NULL;
630 ptr_zencod_new_number = NULL;
631 ptr_zencod_init_number = NULL;
632 ptr_zencod_rsa_mod_exp = NULL;
633 ptr_zencod_rsa_mod_exp_crt = NULL;
634 ptr_zencod_dsa_do_sign = NULL;
635 ptr_zencod_dsa_do_verify = NULL;
636 ptr_zencod_dh_generate_key = NULL;
637 ptr_zencod_dh_compute_key = NULL;
638 ptr_zencod_rand_bytes = NULL;
639 ptr_zencod_math_mod_exp = NULL;
640 ptr_zencod_test = NULL;
641 ptr_zencod_md5_init = NULL;
642 ptr_zencod_md5_update = NULL;
643 ptr_zencod_md5_do_final = NULL;
644 ptr_zencod_sha1_init = NULL;
645 ptr_zencod_sha1_update = NULL;
646 ptr_zencod_sha1_do_final = NULL;
647 ptr_zencod_xdes_cipher = NULL;
648 ptr_zencod_rc4_cipher = NULL;
649
650 return 0;
651 }
652
653 static int zencod_finish(ENGINE *e)
654 {
655
656 CHEESE();
657
658 /*
659 * We Should add some tests for non NULL parameters or bad value !!
660 * Stuff to be done ...
661 */
662 if (zencod_dso == NULL) {
663 ZENCODerr(ZENCOD_F_ZENCOD_FINISH, ZENCOD_R_NOT_LOADED);
664 return 0;
665 }
666 if (!DSO_free(zencod_dso)) {
667 ZENCODerr(ZENCOD_F_ZENCOD_FINISH, ZENCOD_R_DSO_FAILURE);
668 return 0;
669 }
670
671 zencod_dso = NULL;
672
673 ptr_zencod_bytes2bits = NULL;
674 ptr_zencod_bits2bytes = NULL;
675 ptr_zencod_new_number = NULL;
676 ptr_zencod_init_number = NULL;
677 ptr_zencod_rsa_mod_exp = NULL;
678 ptr_zencod_rsa_mod_exp_crt = NULL;
679 ptr_zencod_dsa_do_sign = NULL;
680 ptr_zencod_dsa_do_verify = NULL;
681 ptr_zencod_dh_generate_key = NULL;
682 ptr_zencod_dh_compute_key = NULL;
683 ptr_zencod_rand_bytes = NULL;
684 ptr_zencod_math_mod_exp = NULL;
685 ptr_zencod_test = NULL;
686 ptr_zencod_md5_init = NULL;
687 ptr_zencod_md5_update = NULL;
688 ptr_zencod_md5_do_final = NULL;
689 ptr_zencod_sha1_init = NULL;
690 ptr_zencod_sha1_update = NULL;
691 ptr_zencod_sha1_do_final = NULL;
692 ptr_zencod_xdes_cipher = NULL;
693 ptr_zencod_rc4_cipher = NULL;
694
695 return 1;
696 }
697
698 static int zencod_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) ())
699 {
700
701 int initialised = ((zencod_dso == NULL) ? 0 : 1);
702
703 CHEESE();
704
705 /*
706 * We Should add some tests for non NULL parameters or bad value !!
707 * Stuff to be done ...
708 */
709 switch (cmd) {
710 case ZENCOD_CMD_SO_PATH:
711 if (p == NULL) {
712 ZENCODerr(ZENCOD_F_ZENCOD_CTRL, ERR_R_PASSED_NULL_PARAMETER);
713 return 0;
714 }
715 if (initialised) {
716 ZENCODerr(ZENCOD_F_ZENCOD_CTRL, ZENCOD_R_ALREADY_LOADED);
717 return 0;
718 }
719 ZENCOD_LIBNAME = (const char *)p;
720 return 1;
721 default:
722 break;
723 }
724
725 ZENCODerr(ZENCOD_F_ZENCOD_CTRL, ZENCOD_R_CTRL_COMMAND_NOT_IMPLEMENTED);
726
727 return 0;
728 }
729
730 /*
731 * BIGNUM stuff Functions
732 */
733 static int zencod_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
734 const BIGNUM *m, BN_CTX *ctx)
735 {
736 zen_nb_t y, x, e, n;
737 int ret;
738
739 CHEESE();
740
741 if (!zencod_dso) {
742 ENGINEerr(ZENCOD_F_ZENCOD_BN_MOD_EXP, ZENCOD_R_NOT_LOADED);
743 return 0;
744 }
745
746 if (!bn_wexpand(r, m->top + 1)) {
747 ENGINEerr(ZENCOD_F_ZENCOD_BN_MOD_EXP, ZENCOD_R_BN_EXPAND_FAIL);
748 return 0;
749 }
750
751 memset(r->d, 0, BN_num_bytes(m));
752
753 ptr_zencod_init_number(&y, (r->dmax - 1) * sizeof(BN_ULONG) * 8,
754 (unsigned char *)r->d);
755 BIGNUM2ZEN(&x, a);
756 BIGNUM2ZEN(&e, p);
757 BIGNUM2ZEN(&n, m);
758
759 /* Must invert x and e parameter due to BN mod exp prototype ... */
760 ret = ptr_zencod_math_mod_exp(&y, &e, &x, &n);
761
762 if (ret) {
763 PERROR("zenbridge_math_mod_exp");
764 ENGINEerr(ZENCOD_F_ZENCOD_BN_MOD_EXP, ZENCOD_R_REQUEST_FAILED);
765 return 0;
766 }
767
768 r->top = (BN_num_bits(m) + BN_BITS2 - 1) / BN_BITS2;
769
770 return 1;
771 }
772
773 /*
774 * RSA stuff Functions
775 */
776 # ifndef OPENSSL_NO_RSA
777 static int RSA_zencod_rsa_mod_exp(BIGNUM *r0, const BIGNUM *i, RSA *rsa)
778 {
779
780 CHEESE();
781
782 if (!zencod_dso) {
783 ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP_CRT, ZENCOD_R_NOT_LOADED);
784 return 0;
785 }
786
787 if (!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) {
788 ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP_CRT,
789 ZENCOD_R_BAD_KEY_COMPONENTS);
790 return 0;
791 }
792
793 /* Do in software if argument is too large for hardware */
794 if (RSA_size(rsa) * 8 > ZENBRIDGE_MAX_KEYSIZE_RSA_CRT) {
795 const RSA_METHOD *meth;
796
797 meth = RSA_PKCS1_SSLeay();
798 return meth->rsa_mod_exp(r0, i, rsa);
799 } else {
800 zen_nb_t y, x, p, q, dmp1, dmq1, iqmp;
801
802 if (!bn_expand(r0, RSA_size(rsa) * 8)) {
803 ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP_CRT,
804 ZENCOD_R_BN_EXPAND_FAIL);
805 return 0;
806 }
807 r0->top = (RSA_size(rsa) * 8 + BN_BITS2 - 1) / BN_BITS2;
808
809 BIGNUM2ZEN(&x, i);
810 BIGNUM2ZEN(&y, r0);
811 BIGNUM2ZEN(&p, rsa->p);
812 BIGNUM2ZEN(&q, rsa->q);
813 BIGNUM2ZEN(&dmp1, rsa->dmp1);
814 BIGNUM2ZEN(&dmq1, rsa->dmq1);
815 BIGNUM2ZEN(&iqmp, rsa->iqmp);
816
817 if (ptr_zencod_rsa_mod_exp_crt(&y, &x, &p, &q, &dmp1, &dmq1, &iqmp) <
818 0) {
819 PERROR("zenbridge_rsa_mod_exp_crt");
820 ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP_CRT,
821 ZENCOD_R_REQUEST_FAILED);
822 return 0;
823 }
824
825 return 1;
826 }
827 }
828
829 /*
830 * This function is aliased to RSA_mod_exp (with the mont stuff dropped).
831 */
832 static int RSA_zencod_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
833 const BIGNUM *m, BN_CTX *ctx,
834 BN_MONT_CTX *m_ctx)
835 {
836
837 CHEESE();
838
839 if (!zencod_dso) {
840 ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP, ZENCOD_R_NOT_LOADED);
841 return 0;
842 }
843
844 /* Do in software if argument is too large for hardware */
845 if (BN_num_bits(m) > ZENBRIDGE_MAX_KEYSIZE_RSA) {
846 const RSA_METHOD *meth;
847
848 meth = RSA_PKCS1_SSLeay();
849 return meth->bn_mod_exp(r, a, p, m, ctx, m_ctx);
850 } else {
851 zen_nb_t y, x, e, n;
852
853 if (!bn_expand(r, BN_num_bits(m))) {
854 ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP, ZENCOD_R_BN_EXPAND_FAIL);
855 return 0;
856 }
857 r->top = (BN_num_bits(m) + BN_BITS2 - 1) / BN_BITS2;
858
859 BIGNUM2ZEN(&x, a);
860 BIGNUM2ZEN(&y, r);
861 BIGNUM2ZEN(&e, p);
862 BIGNUM2ZEN(&n, m);
863
864 if (ptr_zencod_rsa_mod_exp(&y, &x, &n, &e) < 0) {
865 PERROR("zenbridge_rsa_mod_exp");
866 ENGINEerr(ZENCOD_F_ZENCOD_RSA_MOD_EXP, ZENCOD_R_REQUEST_FAILED);
867 return 0;
868 }
869
870 return 1;
871 }
872 }
873 # endif /* !OPENSSL_NO_RSA */
874
875 # ifndef OPENSSL_NO_DSA
876 /*
877 * DSA stuff Functions
878 */
879 static DSA_SIG *DSA_zencod_do_sign(const unsigned char *dgst, int dlen,
880 DSA *dsa)
881 {
882 zen_nb_t p, q, g, x, y, r, s, data;
883 DSA_SIG *sig;
884 BIGNUM *bn_r = NULL;
885 BIGNUM *bn_s = NULL;
886 char msg[20];
887
888 CHEESE();
889
890 if (!zencod_dso) {
891 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_NOT_LOADED);
892 goto FAILED;
893 }
894
895 if (dlen > 160) {
896 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_REQUEST_FAILED);
897 goto FAILED;
898 }
899
900 /* Do in software if argument is too large for hardware */
901 if (BN_num_bits(dsa->p) > ZENBRIDGE_MAX_KEYSIZE_DSA_SIGN ||
902 BN_num_bits(dsa->g) > ZENBRIDGE_MAX_KEYSIZE_DSA_SIGN) {
903 const DSA_METHOD *meth;
904 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_BAD_KEY_COMPONENTS);
905 meth = DSA_OpenSSL();
906 return meth->dsa_do_sign(dgst, dlen, dsa);
907 }
908
909 if (!(bn_s = BN_new()) || !(bn_r = BN_new())) {
910 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_BAD_KEY_COMPONENTS);
911 goto FAILED;
912 }
913
914 if (!bn_expand(bn_r, 160) || !bn_expand(bn_s, 160)) {
915 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_BN_EXPAND_FAIL);
916 goto FAILED;
917 }
918
919 bn_r->top = bn_s->top = (160 + BN_BITS2 - 1) / BN_BITS2;
920 BIGNUM2ZEN(&p, dsa->p);
921 BIGNUM2ZEN(&q, dsa->q);
922 BIGNUM2ZEN(&g, dsa->g);
923 BIGNUM2ZEN(&x, dsa->priv_key);
924 BIGNUM2ZEN(&y, dsa->pub_key);
925 BIGNUM2ZEN(&r, bn_r);
926 BIGNUM2ZEN(&s, bn_s);
927 q.len = x.len = 160;
928
929 ypcmem(msg, dgst, 20);
930 ptr_zencod_init_number(&data, 160, msg);
931
932 if (ptr_zencod_dsa_do_sign(0, &data, &y, &p, &q, &g, &x, &r, &s) < 0) {
933 PERROR("zenbridge_dsa_do_sign");
934 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_REQUEST_FAILED);
935 goto FAILED;
936 }
937
938 if (!(sig = DSA_SIG_new())) {
939 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_REQUEST_FAILED);
940 goto FAILED;
941 }
942 sig->r = bn_r;
943 sig->s = bn_s;
944 return sig;
945
946 FAILED:
947 BN_free(bn_r);
948 BN_free(bn_s);
949 return NULL;
950 }
951
952 static int DSA_zencod_do_verify(const unsigned char *dgst, int dlen,
953 DSA_SIG *sig, DSA *dsa)
954 {
955 zen_nb_t data, p, q, g, y, r, s, v;
956 char msg[20];
957 char v_data[20];
958 int ret;
959
960 CHEESE();
961
962 if (!zencod_dso) {
963 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_VERIFY, ZENCOD_R_NOT_LOADED);
964 return 0;
965 }
966
967 if (dlen > 160) {
968 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_REQUEST_FAILED);
969 return 0;
970 }
971
972 /* Do in software if argument is too large for hardware */
973 if (BN_num_bits(dsa->p) > ZENBRIDGE_MAX_KEYSIZE_DSA_SIGN ||
974 BN_num_bits(dsa->g) > ZENBRIDGE_MAX_KEYSIZE_DSA_SIGN) {
975 const DSA_METHOD *meth;
976 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_SIGN, ZENCOD_R_BAD_KEY_COMPONENTS);
977 meth = DSA_OpenSSL();
978 return meth->dsa_do_verify(dgst, dlen, sig, dsa);
979 }
980
981 BIGNUM2ZEN(&p, dsa->p);
982 BIGNUM2ZEN(&q, dsa->q);
983 BIGNUM2ZEN(&g, dsa->g);
984 BIGNUM2ZEN(&y, dsa->pub_key);
985 BIGNUM2ZEN(&r, sig->r);
986 BIGNUM2ZEN(&s, sig->s);
987 ptr_zencod_init_number(&v, 160, v_data);
988 ypcmem(msg, dgst, 20);
989 ptr_zencod_init_number(&data, 160, msg);
990
991 if ((ret =
992 ptr_zencod_dsa_do_verify(0, &data, &p, &q, &g, &y, &r, &s,
993 &v)) < 0) {
994 PERROR("zenbridge_dsa_do_verify");
995 ENGINEerr(ZENCOD_F_ZENCOD_DSA_DO_VERIFY, ZENCOD_R_REQUEST_FAILED);
996 return 0;
997 }
998
999 return ((ret == 0) ? 1 : ret);
1000 }
1001
1002 static int DSA_zencod_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a,
1003 const BIGNUM *p, const BIGNUM *m,
1004 BN_CTX *ctx, BN_MONT_CTX *m_ctx)
1005 {
1006 CHEESE();
1007
1008 return zencod_bn_mod_exp(r, a, p, m, ctx);
1009 }
1010 # endif /* !OPENSSL_NO_DSA */
1011
1012 # ifndef OPENSSl_NO_DH
1013 /*
1014 * DH stuff Functions
1015 */
1016 static int DH_zencod_generate_key(DH *dh)
1017 {
1018 BIGNUM *bn_prv = NULL;
1019 BIGNUM *bn_pub = NULL;
1020 zen_nb_t y, x, g, p;
1021 int generate_x;
1022
1023 CHEESE();
1024
1025 if (!zencod_dso) {
1026 ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_NOT_LOADED);
1027 return 0;
1028 }
1029
1030 /* Private key */
1031 if (dh->priv_key) {
1032 bn_prv = dh->priv_key;
1033 generate_x = 0;
1034 } else {
1035 if (!(bn_prv = BN_new())) {
1036 ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_BN_EXPAND_FAIL);
1037 goto FAILED;
1038 }
1039 generate_x = 1;
1040 }
1041
1042 /* Public key */
1043 if (dh->pub_key)
1044 bn_pub = dh->pub_key;
1045 else if (!(bn_pub = BN_new())) {
1046 ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_BN_EXPAND_FAIL);
1047 goto FAILED;
1048 }
1049
1050 /* Expand */
1051 if (!bn_wexpand(bn_prv, dh->p->dmax) || !bn_wexpand(bn_pub, dh->p->dmax)) {
1052 ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_BN_EXPAND_FAIL);
1053 goto FAILED;
1054 }
1055 bn_prv->top = dh->p->top;
1056 bn_pub->top = dh->p->top;
1057
1058 /* Convert all keys */
1059 BIGNUM2ZEN(&p, dh->p);
1060 BIGNUM2ZEN(&g, dh->g);
1061 BIGNUM2ZEN(&y, bn_pub);
1062 BIGNUM2ZEN(&x, bn_prv);
1063 x.len = DH_size(dh) * 8;
1064
1065 /* Adjust the lengths of P and G */
1066 p.len = ptr_zencod_bytes2bits(p.data, ZEN_BYTES(p.len));
1067 g.len = ptr_zencod_bytes2bits(g.data, ZEN_BYTES(g.len));
1068
1069 /* Send the request to the driver */
1070 if (ptr_zencod_dh_generate_key(&y, &x, &g, &p, generate_x) < 0) {
1071 perror("zenbridge_dh_generate_key");
1072 ENGINEerr(ZENCOD_F_ZENCOD_DH_GENERATE, ZENCOD_R_REQUEST_FAILED);
1073 goto FAILED;
1074 }
1075
1076 dh->priv_key = bn_prv;
1077 dh->pub_key = bn_pub;
1078
1079 return 1;
1080
1081 FAILED:
1082 if (!dh->priv_key)
1083 BN_free(bn_prv);
1084 if (!dh->pub_key)
1085 BN_free(bn_pub);
1086
1087 return 0;
1088 }
1089
1090 static int DH_zencod_compute_key(unsigned char *key, const BIGNUM *pub_key,
1091 DH *dh)
1092 {
1093 zen_nb_t y, x, p, k;
1094
1095 CHEESE();
1096
1097 if (!zencod_dso) {
1098 ENGINEerr(ZENCOD_F_ZENCOD_DH_COMPUTE, ZENCOD_R_NOT_LOADED);
1099 return 0;
1100 }
1101
1102 if (!dh->priv_key) {
1103 ENGINEerr(ZENCOD_F_ZENCOD_DH_COMPUTE, ZENCOD_R_BAD_KEY_COMPONENTS);
1104 return 0;
1105 }
1106
1107 /* Convert all keys */
1108 BIGNUM2ZEN(&y, pub_key);
1109 BIGNUM2ZEN(&x, dh->priv_key);
1110 BIGNUM2ZEN(&p, dh->p);
1111 ptr_zencod_init_number(&k, p.len, key);
1112
1113 /* Adjust the lengths */
1114 p.len = ptr_zencod_bytes2bits(p.data, ZEN_BYTES(p.len));
1115 y.len = ptr_zencod_bytes2bits(y.data, ZEN_BYTES(y.len));
1116 x.len = ptr_zencod_bytes2bits(x.data, ZEN_BYTES(x.len));
1117
1118 /* Call the hardware */
1119 if (ptr_zencod_dh_compute_key(&k, &y, &x, &p) < 0) {
1120 ENGINEerr(ZENCOD_F_ZENCOD_DH_COMPUTE, ZENCOD_R_REQUEST_FAILED);
1121 return 0;
1122 }
1123
1124 /* The key must be written MSB -> LSB */
1125 k.len = ptr_zencod_bytes2bits(k.data, ZEN_BYTES(k.len));
1126 esrever(key, ZEN_BYTES(k.len));
1127
1128 return ZEN_BYTES(k.len);
1129 }
1130
1131 static int DH_zencod_bn_mod_exp(const DH *dh, BIGNUM *r, const BIGNUM *a,
1132 const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
1133 BN_MONT_CTX *m_ctx)
1134 {
1135 CHEESE();
1136
1137 return zencod_bn_mod_exp(r, a, p, m, ctx);
1138 }
1139 # endif /* !OPENSSL_NO_DH */
1140
1141 /*
1142 * RAND stuff Functions
1143 */
1144 static void RAND_zencod_seed(const void *buf, int num)
1145 {
1146 /*
1147 * Nothing to do cause our crypto accelerator provide a true random
1148 * generator
1149 */
1150 }
1151
1152 static int RAND_zencod_rand_bytes(unsigned char *buf, int num)
1153 {
1154 zen_nb_t r;
1155
1156 CHEESE();
1157
1158 if (!zencod_dso) {
1159 ENGINEerr(ZENCOD_F_ZENCOD_RAND, ZENCOD_R_NOT_LOADED);
1160 return 0;
1161 }
1162
1163 ptr_zencod_init_number(&r, num * 8, buf);
1164
1165 if (ptr_zencod_rand_bytes(&r, ZENBRIDGE_RNG_DIRECT) < 0) {
1166 PERROR("zenbridge_rand_bytes");
1167 ENGINEerr(ZENCOD_F_ZENCOD_RAND, ZENCOD_R_REQUEST_FAILED);
1168 return 0;
1169 }
1170
1171 return 1;
1172 }
1173
1174 static int RAND_zencod_rand_status(void)
1175 {
1176 CHEESE();
1177
1178 return 1;
1179 }
1180
1181 /*
1182 * This stuff is needed if this ENGINE is being compiled into a
1183 * self-contained shared-library.
1184 */
1185 # ifdef ENGINE_DYNAMIC_SUPPORT
1186 static int bind_fn(ENGINE *e, const char *id)
1187 {
1188
1189 if (id && (strcmp(id, engine_zencod_id) != 0)) {
1190 return 0;
1191 }
1192 if (!bind_helper(e)) {
1193 return 0;
1194 }
1195
1196 return 1;
1197 }
1198
1199 IMPLEMENT_DYNAMIC_CHECK_FN()
1200 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
1201 # endif /* ENGINE_DYNAMIC_SUPPORT */
1202 /*
1203 * Adding "Digest" and "Cipher" tools ...
1204 * This is in development ... ;-)
1205 * In orfer to code this, i refer to hw_openbsd_dev_crypto and openssl engine made by Geoff Thorpe (if i'm rigth),
1206 * and evp, sha md5 definitions etc ...
1207 */
1208 /* First add some include ... */
1209 # include <openssl/evp.h>
1210 # include <openssl/sha.h>
1211 # include <openssl/md5.h>
1212 # include <openssl/rc4.h>
1213 # include <openssl/des.h>
1214 /* Some variables declaration ... */
1215 /*
1216 * DONS: Disable symetric computation except DES and 3DES, but let part
1217 * of the code
1218 */
1219 /* static int engine_digest_nids [ ] = { NID_sha1, NID_md5 } ; */
1220 static int engine_digest_nids[] = { };
1221
1222 static int engine_digest_nids_num = 0;
1223 /*
1224 * static int engine_cipher_nids [ ] = { NID_rc4, NID_rc4_40, NID_des_cbc,
1225 * NID_des_ede3_cbc } ;
1226 */
1227 static int engine_cipher_nids[] = { NID_des_cbc, NID_des_ede3_cbc };
1228
1229 static int engine_cipher_nids_num = 2;
1230
1231 /* Function prototype ... */
1232 /* SHA stuff */
1233 static int engine_sha1_init(EVP_MD_CTX *ctx);
1234 static int engine_sha1_update(EVP_MD_CTX *ctx, const void *data,
1235 unsigned long count);
1236 static int engine_sha1_final(EVP_MD_CTX *ctx, unsigned char *md);
1237
1238 /* MD5 stuff */
1239 static int engine_md5_init(EVP_MD_CTX *ctx);
1240 static int engine_md5_update(EVP_MD_CTX *ctx, const void *data,
1241 unsigned long count);
1242 static int engine_md5_final(EVP_MD_CTX *ctx, unsigned char *md);
1243
1244 static int engine_md_cleanup(EVP_MD_CTX *ctx);
1245 static int engine_md_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from);
1246
1247 /* RC4 Stuff */
1248 static int engine_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1249 const unsigned char *iv, int enc);
1250 static int engine_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1251 const unsigned char *in, unsigned int inl);
1252
1253 /* DES Stuff */
1254 static int engine_des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1255 const unsigned char *iv, int enc);
1256 static int engine_des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1257 const unsigned char *in, unsigned int inl);
1258
1259 /* 3DES Stuff */
1260 static int engine_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
1261 const unsigned char *key,
1262 const unsigned char *iv, int enc);
1263 static int engine_des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1264 const unsigned char *in,
1265 unsigned int inl);
1266
1267 static int engine_cipher_cleanup(EVP_CIPHER_CTX *ctx); /* cleanup ctx */
1268
1269 /* The one for SHA ... */
1270 static const EVP_MD engine_sha1_md = {
1271 NID_sha1,
1272 NID_sha1WithRSAEncryption,
1273 SHA_DIGEST_LENGTH,
1274 EVP_MD_FLAG_ONESHOT,
1275 /*
1276 * 0,
1277 *//*
1278 * EVP_MD_FLAG_ONESHOT = x0001 digest can only handle a single block *
1279 * XXX: set according to device info ...
1280 */
1281 engine_sha1_init,
1282 engine_sha1_update,
1283 engine_sha1_final,
1284 engine_md_copy, /* dev_crypto_sha_copy */
1285 engine_md_cleanup, /* dev_crypto_sha_cleanup */
1286 EVP_PKEY_RSA_method,
1287 SHA_CBLOCK,
1288 /* sizeof ( EVP_MD * ) + sizeof ( SHA_CTX ) */
1289 sizeof(ZEN_MD_DATA)
1290 /*
1291 * sizeof ( MD_CTX_DATA ) The message digest data structure ...
1292 */
1293 };
1294
1295 /* The one for MD5 ... */
1296 static const EVP_MD engine_md5_md = {
1297 NID_md5,
1298 NID_md5WithRSAEncryption,
1299 MD5_DIGEST_LENGTH,
1300 EVP_MD_FLAG_ONESHOT,
1301 /*
1302 * 0,
1303 *//*
1304 * EVP_MD_FLAG_ONESHOT = x0001 digest can only handle a single block *
1305 * XXX: set according to device info ...
1306 */
1307 engine_md5_init,
1308 engine_md5_update,
1309 engine_md5_final,
1310 engine_md_copy, /* dev_crypto_md5_copy */
1311 engine_md_cleanup, /* dev_crypto_md5_cleanup */
1312 EVP_PKEY_RSA_method,
1313 MD5_CBLOCK,
1314 /* sizeof ( EVP_MD * ) + sizeof ( MD5_CTX ) */
1315 sizeof(ZEN_MD_DATA)
1316 /*
1317 * sizeof ( MD_CTX_DATA ) The message digest data structure ...
1318 */
1319 };
1320
1321 /* The one for RC4 ... */
1322 # define EVP_RC4_KEY_SIZE 16
1323
1324 /* Try something static ... */
1325 typedef struct {
1326 unsigned int len;
1327 unsigned int first;
1328 unsigned char rc4_state[260];
1329 } NEW_ZEN_RC4_KEY;
1330
1331 # define rc4_data(ctx) ( (EVP_RC4_KEY *) ( ctx )->cipher_data )
1332
1333 static const EVP_CIPHER engine_rc4 = {
1334 NID_rc4,
1335 1,
1336 16, /* EVP_RC4_KEY_SIZE should be 128 bits */
1337 0, /* FIXME: key should be up to 256 bytes */
1338 EVP_CIPH_VARIABLE_LENGTH,
1339 engine_rc4_init_key,
1340 engine_rc4_cipher,
1341 engine_cipher_cleanup,
1342 sizeof(NEW_ZEN_RC4_KEY),
1343 NULL,
1344 NULL,
1345 NULL
1346 };
1347
1348 /* The one for RC4_40 ... */
1349 static const EVP_CIPHER engine_rc4_40 = {
1350 NID_rc4_40,
1351 1,
1352 5, /* 40 bits */
1353 0,
1354 EVP_CIPH_VARIABLE_LENGTH,
1355 engine_rc4_init_key,
1356 engine_rc4_cipher,
1357 engine_cipher_cleanup,
1358 sizeof(NEW_ZEN_RC4_KEY),
1359 NULL,
1360 NULL,
1361 NULL
1362 };
1363
1364 /* The one for DES ... */
1365
1366 /* Try something static ... */
1367 typedef struct {
1368 unsigned char des_key[24];
1369 unsigned char des_iv[8];
1370 } ZEN_DES_KEY;
1371
1372 static const EVP_CIPHER engine_des_cbc = {
1373 NID_des_cbc,
1374 8, 8, 8,
1375 0 | EVP_CIPH_CBC_MODE,
1376 engine_des_init_key,
1377 engine_des_cbc_cipher,
1378 engine_cipher_cleanup,
1379 sizeof(ZEN_DES_KEY),
1380 EVP_CIPHER_set_asn1_iv,
1381 EVP_CIPHER_get_asn1_iv,
1382 NULL,
1383 NULL
1384 };
1385
1386 /* The one for 3DES ... */
1387
1388 /* Try something static ... */
1389 typedef struct {
1390 unsigned char des3_key[24];
1391 unsigned char des3_iv[8];
1392 } ZEN_3DES_KEY;
1393
1394 # define des_data(ctx) ( (DES_EDE_KEY *) ( ctx )->cipher_data )
1395
1396 static const EVP_CIPHER engine_des_ede3_cbc = {
1397 NID_des_ede3_cbc,
1398 8, 8, 8,
1399 0 | EVP_CIPH_CBC_MODE,
1400 engine_des_ede3_init_key,
1401 engine_des_ede3_cbc_cipher,
1402 engine_cipher_cleanup,
1403 sizeof(ZEN_3DES_KEY),
1404 EVP_CIPHER_set_asn1_iv,
1405 EVP_CIPHER_get_asn1_iv,
1406 NULL,
1407 NULL
1408 };
1409
1410 /* General function cloned on hw_openbsd_dev_crypto one ... */
1411 static int engine_digests(ENGINE *e, const EVP_MD **digest, const int **nids,
1412 int nid)
1413 {
1414
1415 # ifdef DEBUG_ZENCOD_MD
1416 fprintf(stderr, "\t=>Function : static int engine_digests () called !\n");
1417 # endif
1418
1419 if (!digest) {
1420 /* We are returning a list of supported nids */
1421 *nids = engine_digest_nids;
1422 return engine_digest_nids_num;
1423 }
1424 /* We are being asked for a specific digest */
1425 if (nid == NID_md5) {
1426 *digest = &engine_md5_md;
1427 } else if (nid == NID_sha1) {
1428 *digest = &engine_sha1_md;
1429 } else {
1430 *digest = NULL;
1431 return 0;
1432 }
1433 return 1;
1434 }
1435
1436 /*
1437 * SHA stuff Functions
1438 */
1439 static int engine_sha1_init(EVP_MD_CTX *ctx)
1440 {
1441
1442 int to_return = 0;
1443
1444 /* Test with zenbridge library ... */
1445 to_return = ptr_zencod_sha1_init((ZEN_MD_DATA *)ctx->md_data);
1446 to_return = !to_return;
1447
1448 return to_return;
1449 }
1450
1451 static int engine_sha1_update(EVP_MD_CTX *ctx, const void *data,
1452 unsigned long count)
1453 {
1454
1455 zen_nb_t input;
1456 int to_return = 0;
1457
1458 /* Convert parameters ... */
1459 input.len = count;
1460 input.data = (unsigned char *)data;
1461
1462 /* Test with zenbridge library ... */
1463 to_return =
1464 ptr_zencod_sha1_update((ZEN_MD_DATA *)ctx->md_data,
1465 (const zen_nb_t *)&input);
1466 to_return = !to_return;
1467
1468 return to_return;
1469 }
1470
1471 static int engine_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
1472 {
1473
1474 zen_nb_t output;
1475 int to_return = 0;
1476
1477 /* Convert parameters ... */
1478 output.len = SHA_DIGEST_LENGTH;
1479 output.data = md;
1480
1481 /* Test with zenbridge library ... */
1482 to_return =
1483 ptr_zencod_sha1_do_final((ZEN_MD_DATA *)ctx->md_data,
1484 (zen_nb_t *) & output);
1485 to_return = !to_return;
1486
1487 return to_return;
1488 }
1489
1490 /*
1491 * MD5 stuff Functions
1492 */
1493 static int engine_md5_init(EVP_MD_CTX *ctx)
1494 {
1495
1496 int to_return = 0;
1497
1498 /* Test with zenbridge library ... */
1499 to_return = ptr_zencod_md5_init((ZEN_MD_DATA *)ctx->md_data);
1500 to_return = !to_return;
1501
1502 return to_return;
1503 }
1504
1505 static int engine_md5_update(EVP_MD_CTX *ctx, const void *data,
1506 unsigned long count)
1507 {
1508
1509 zen_nb_t input;
1510 int to_return = 0;
1511
1512 /* Convert parameters ... */
1513 input.len = count;
1514 input.data = (unsigned char *)data;
1515
1516 /* Test with zenbridge library ... */
1517 to_return =
1518 ptr_zencod_md5_update((ZEN_MD_DATA *)ctx->md_data,
1519 (const zen_nb_t *)&input);
1520 to_return = !to_return;
1521
1522 return to_return;
1523 }
1524
1525 static int engine_md5_final(EVP_MD_CTX *ctx, unsigned char *md)
1526 {
1527
1528 zen_nb_t output;
1529 int to_return = 0;
1530
1531 /* Convert parameters ... */
1532 output.len = MD5_DIGEST_LENGTH;
1533 output.data = md;
1534
1535 /* Test with zenbridge library ... */
1536 to_return =
1537 ptr_zencod_md5_do_final((ZEN_MD_DATA *)ctx->md_data,
1538 (zen_nb_t *) & output);
1539 to_return = !to_return;
1540
1541 return to_return;
1542 }
1543
1544 static int engine_md_cleanup(EVP_MD_CTX *ctx)
1545 {
1546
1547 ZEN_MD_DATA *zen_md_data = (ZEN_MD_DATA *)ctx->md_data;
1548
1549 OPENSSL_free(zen_md_data->HashBuffer);
1550 zen_md_data->HashBufferSize = 0;
1551 ctx->md_data = NULL;
1552 return 1;
1553 }
1554
1555 static int engine_md_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
1556 {
1557 const ZEN_MD_DATA *from_md = (ZEN_MD_DATA *)from->md_data;
1558 ZEN_MD_DATA *to_md = (ZEN_MD_DATA *)to->md_data;
1559
1560 to_md->HashBuffer = OPENSSL_malloc(from_md->HashBufferSize);
1561 if (to_md->HashBuffer == NULL)
1562 return 0;
1563 memcpy(to_md->HashBuffer, from_md->HashBuffer, from_md->HashBufferSize);
1564
1565 return 1;
1566 }
1567
1568 /* General function cloned on hw_openbsd_dev_crypto one ... */
1569 static int engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
1570 const int **nids, int nid)
1571 {
1572
1573 if (!cipher) {
1574 /* We are returning a list of supported nids */
1575 *nids = engine_cipher_nids;
1576 return engine_cipher_nids_num;
1577 }
1578 /* We are being asked for a specific cipher */
1579 if (nid == NID_rc4) {
1580 *cipher = &engine_rc4;
1581 } else if (nid == NID_rc4_40) {
1582 *cipher = &engine_rc4_40;
1583 } else if (nid == NID_des_cbc) {
1584 *cipher = &engine_des_cbc;
1585 } else if (nid == NID_des_ede3_cbc) {
1586 *cipher = &engine_des_ede3_cbc;
1587 } else {
1588 *cipher = NULL;
1589 return 0;
1590 }
1591
1592 return 1;
1593 }
1594
1595 static int engine_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1596 const unsigned char *iv, int enc)
1597 {
1598 int to_return = 0;
1599 int i = 0;
1600 int nb = 0;
1601 NEW_ZEN_RC4_KEY *tmp_rc4_key = NULL;
1602
1603 tmp_rc4_key = (NEW_ZEN_RC4_KEY *) (ctx->cipher_data);
1604 tmp_rc4_key->first = 0;
1605 tmp_rc4_key->len = ctx->key_len;
1606 tmp_rc4_key->rc4_state[0] = 0x00;
1607 tmp_rc4_key->rc4_state[2] = 0x00;
1608 nb = 256 / ctx->key_len;
1609 for (i = 0; i < nb; i++) {
1610 memcpy(&(tmp_rc4_key->rc4_state[4 + i * ctx->key_len]), key,
1611 ctx->key_len);
1612 }
1613
1614 to_return = 1;
1615
1616 return to_return;
1617 }
1618
1619 static int engine_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1620 const unsigned char *in, unsigned int in_len)
1621 {
1622
1623 zen_nb_t output, input;
1624 zen_nb_t rc4key;
1625 int to_return = 0;
1626 NEW_ZEN_RC4_KEY *tmp_rc4_key = NULL;
1627
1628 /* Convert parameters ... */
1629 input.len = in_len;
1630 input.data = (unsigned char *)in;
1631 output.len = in_len;
1632 output.data = (unsigned char *)out;
1633
1634 tmp_rc4_key = ((NEW_ZEN_RC4_KEY *) (ctx->cipher_data));
1635 rc4key.len = 260;
1636 rc4key.data = &(tmp_rc4_key->rc4_state[0]);
1637
1638 /* Test with zenbridge library ... */
1639 to_return =
1640 ptr_zencod_rc4_cipher(&output, &input, (const zen_nb_t *)&rc4key,
1641 &(tmp_rc4_key->rc4_state[0]),
1642 &(tmp_rc4_key->rc4_state[3]),
1643 !tmp_rc4_key->first);
1644 to_return = !to_return;
1645
1646 /* Update encryption state ... */
1647 tmp_rc4_key->first = 1;
1648 tmp_rc4_key = NULL;
1649
1650 return to_return;
1651 }
1652
1653 static int engine_des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1654 const unsigned char *iv, int enc)
1655 {
1656
1657 ZEN_DES_KEY *tmp_des_key = NULL;
1658 int to_return = 0;
1659
1660 tmp_des_key = (ZEN_DES_KEY *) (ctx->cipher_data);
1661 memcpy(&(tmp_des_key->des_key[0]), key, 8);
1662 memcpy(&(tmp_des_key->des_key[8]), key, 8);
1663 memcpy(&(tmp_des_key->des_key[16]), key, 8);
1664 memcpy(&(tmp_des_key->des_iv[0]), iv, 8);
1665
1666 to_return = 1;
1667
1668 return to_return;
1669 }
1670
1671 static int engine_des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1672 const unsigned char *in, unsigned int inl)
1673 {
1674
1675 zen_nb_t output, input;
1676 zen_nb_t deskey_1, deskey_2, deskey_3, iv;
1677 int to_return = 0;
1678
1679 /* Convert parameters ... */
1680 input.len = inl;
1681 input.data = (unsigned char *)in;
1682 output.len = inl;
1683 output.data = out;
1684
1685 /* Set key parameters ... */
1686 deskey_1.len = 8;
1687 deskey_2.len = 8;
1688 deskey_3.len = 8;
1689 deskey_1.data =
1690 (unsigned char *)((ZEN_DES_KEY *) (ctx->cipher_data))->des_key;
1691 deskey_2.data =
1692 (unsigned char *)&((ZEN_DES_KEY *) (ctx->cipher_data))->des_key[8];
1693 deskey_3.data =
1694 (unsigned char *)&((ZEN_DES_KEY *) (ctx->cipher_data))->des_key[16];
1695
1696 /* Key correct iv ... */
1697 memcpy(((ZEN_DES_KEY *) (ctx->cipher_data))->des_iv, ctx->iv, 8);
1698 iv.len = 8;
1699 iv.data = (unsigned char *)((ZEN_DES_KEY *) (ctx->cipher_data))->des_iv;
1700
1701 if (ctx->encrypt == 0) {
1702 memcpy(ctx->iv, &(input.data[input.len - 8]), 8);
1703 }
1704
1705 /* Test with zenbridge library ... */
1706 to_return = ptr_zencod_xdes_cipher(&output, &input,
1707 (zen_nb_t *) & deskey_1,
1708 (zen_nb_t *) & deskey_2,
1709 (zen_nb_t *) & deskey_3, &iv,
1710 ctx->encrypt);
1711 to_return = !to_return;
1712
1713 /*
1714 * But we need to set up the rigth iv ... Test ENCRYPT or DECRYPT mode to
1715 * set iv ...
1716 */
1717 if (ctx->encrypt == 1) {
1718 memcpy(ctx->iv, &(output.data[output.len - 8]), 8);
1719 }
1720
1721 return to_return;
1722 }
1723
1724 static int engine_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
1725 const unsigned char *key,
1726 const unsigned char *iv, int enc)
1727 {
1728
1729 ZEN_3DES_KEY *tmp_3des_key = NULL;
1730 int to_return = 0;
1731
1732 tmp_3des_key = (ZEN_3DES_KEY *) (ctx->cipher_data);
1733 memcpy(&(tmp_3des_key->des3_key[0]), key, 24);
1734 memcpy(&(tmp_3des_key->des3_iv[0]), iv, 8);
1735
1736 to_return = 1;
1737
1738 return to_return;
1739 }
1740
1741 static int engine_des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1742 const unsigned char *in,
1743 unsigned int in_len)
1744 {
1745
1746 zen_nb_t output, input;
1747 zen_nb_t deskey_1, deskey_2, deskey_3, iv;
1748 int to_return = 0;
1749
1750 /* Convert parameters ... */
1751 input.len = in_len;
1752 input.data = (unsigned char *)in;
1753 output.len = in_len;
1754 output.data = out;
1755
1756 /* Set key ... */
1757 deskey_1.len = 8;
1758 deskey_2.len = 8;
1759 deskey_3.len = 8;
1760 deskey_1.data =
1761 (unsigned char *)((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_key;
1762 deskey_2.data =
1763 (unsigned char *)&((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_key[8];
1764 deskey_3.data =
1765 (unsigned char *)&((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_key[16];
1766
1767 /* Key correct iv ... */
1768 memcpy(((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_iv, ctx->iv, 8);
1769 iv.len = 8;
1770 iv.data = (unsigned char *)((ZEN_3DES_KEY *) (ctx->cipher_data))->des3_iv;
1771
1772 if (ctx->encrypt == 0) {
1773 memcpy(ctx->iv, &(input.data[input.len - 8]), 8);
1774 }
1775
1776 /* Test with zenbridge library ... */
1777 to_return = ptr_zencod_xdes_cipher(&output, &input,
1778 (zen_nb_t *) & deskey_1,
1779 (zen_nb_t *) & deskey_2,
1780 (zen_nb_t *) & deskey_3, &iv,
1781 ctx->encrypt);
1782 to_return = !to_return;
1783
1784 if (ctx->encrypt == 1) {
1785 memcpy(ctx->iv, &(output.data[output.len - 8]), 8);
1786 }
1787
1788 return to_return;
1789 }
1790
1791 static int engine_cipher_cleanup(EVP_CIPHER_CTX *ctx)
1792 {
1793
1794 /* Set the key pointer ... */
1795 if (ctx->cipher->nid == NID_rc4 || ctx->cipher->nid == NID_rc4_40) {
1796 } else if (ctx->cipher->nid == NID_des_cbc) {
1797 } else if (ctx->cipher->nid == NID_des_ede3_cbc) {
1798 }
1799
1800 return 1;
1801 }
1802
1803 # endif /* !OPENSSL_NO_HW_ZENCOD */
1804 #endif /* !OPENSSL_NO_HW */
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