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diff --git a/src/lib/libcrypto/engine/hw_cswift.c b/src/lib/libcrypto/engine/hw_cswift.c
deleted file mode 100644
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1/* crypto/engine/hw_cswift.c */
2/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <stdio.h>
60#include <openssl/crypto.h>
61#include "cryptlib.h"
62#include <openssl/dso.h>
63#include <openssl/engine.h>
64
65#ifndef OPENSSL_NO_HW
66#ifndef OPENSSL_NO_HW_CSWIFT
67
68/* Attribution notice: Rainbow have generously allowed me to reproduce
69 * the necessary definitions here from their API. This means the support
70 * can build independently of whether application builders have the
71 * API or hardware. This will allow developers to easily produce software
72 * that has latent hardware support for any users that have accelerators
73 * installed, without the developers themselves needing anything extra.
74 *
75 * I have only clipped the parts from the CryptoSwift header files that
76 * are (or seem) relevant to the CryptoSwift support code. This is
77 * simply to keep the file sizes reasonable.
78 * [Geoff]
79 */
80#ifdef FLAT_INC
81#include "cswift.h"
82#else
83#include "vendor_defns/cswift.h"
84#endif
85
86#define CSWIFT_LIB_NAME "cswift engine"
87#include "hw_cswift_err.c"
88
89static int cswift_destroy(ENGINE *e);
90static int cswift_init(ENGINE *e);
91static int cswift_finish(ENGINE *e);
92static int cswift_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
93static int cswift_bn_32copy(SW_LARGENUMBER * out, const BIGNUM * in);
94
95/* BIGNUM stuff */
96static int cswift_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
97 const BIGNUM *m, BN_CTX *ctx);
98static int cswift_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
99 const BIGNUM *q, const BIGNUM *dmp1, const BIGNUM *dmq1,
100 const BIGNUM *iqmp, BN_CTX *ctx);
101
102#ifndef OPENSSL_NO_RSA
103/* RSA stuff */
104static int cswift_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
105#endif
106/* This function is aliased to mod_exp (with the mont stuff dropped). */
107static int cswift_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
108 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
109
110#ifndef OPENSSL_NO_DSA
111/* DSA stuff */
112static DSA_SIG *cswift_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa);
113static int cswift_dsa_verify(const unsigned char *dgst, int dgst_len,
114 DSA_SIG *sig, DSA *dsa);
115#endif
116
117#ifndef OPENSSL_NO_DH
118/* DH stuff */
119/* This function is alised to mod_exp (with the DH and mont dropped). */
120static int cswift_mod_exp_dh(const DH *dh, BIGNUM *r,
121 const BIGNUM *a, const BIGNUM *p,
122 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
123#endif
124
125/* RAND stuff */
126static int cswift_rand_bytes(unsigned char *buf, int num);
127static int cswift_rand_status(void);
128
129/* The definitions for control commands specific to this engine */
130#define CSWIFT_CMD_SO_PATH ENGINE_CMD_BASE
131static const ENGINE_CMD_DEFN cswift_cmd_defns[] = {
132 {CSWIFT_CMD_SO_PATH,
133 "SO_PATH",
134 "Specifies the path to the 'cswift' shared library",
135 ENGINE_CMD_FLAG_STRING},
136 {0, NULL, NULL, 0}
137 };
138
139#ifndef OPENSSL_NO_RSA
140/* Our internal RSA_METHOD that we provide pointers to */
141static RSA_METHOD cswift_rsa =
142 {
143 "CryptoSwift RSA method",
144 NULL,
145 NULL,
146 NULL,
147 NULL,
148 cswift_rsa_mod_exp,
149 cswift_mod_exp_mont,
150 NULL,
151 NULL,
152 0,
153 NULL,
154 NULL,
155 NULL
156 };
157#endif
158
159#ifndef OPENSSL_NO_DSA
160/* Our internal DSA_METHOD that we provide pointers to */
161static DSA_METHOD cswift_dsa =
162 {
163 "CryptoSwift DSA method",
164 cswift_dsa_sign,
165 NULL, /* dsa_sign_setup */
166 cswift_dsa_verify,
167 NULL, /* dsa_mod_exp */
168 NULL, /* bn_mod_exp */
169 NULL, /* init */
170 NULL, /* finish */
171 0, /* flags */
172 NULL /* app_data */
173 };
174#endif
175
176#ifndef OPENSSL_NO_DH
177/* Our internal DH_METHOD that we provide pointers to */
178static DH_METHOD cswift_dh =
179 {
180 "CryptoSwift DH method",
181 NULL,
182 NULL,
183 cswift_mod_exp_dh,
184 NULL,
185 NULL,
186 0,
187 NULL
188 };
189#endif
190
191static RAND_METHOD cswift_random =
192 {
193 /* "CryptoSwift RAND method", */
194 NULL,
195 cswift_rand_bytes,
196 NULL,
197 NULL,
198 cswift_rand_bytes,
199 cswift_rand_status,
200 };
201
202
203/* Constants used when creating the ENGINE */
204static const char *engine_cswift_id = "cswift";
205static const char *engine_cswift_name = "CryptoSwift hardware engine support";
206
207/* This internal function is used by ENGINE_cswift() and possibly by the
208 * "dynamic" ENGINE support too */
209static int bind_helper(ENGINE *e)
210 {
211#ifndef OPENSSL_NO_RSA
212 const RSA_METHOD *meth1;
213#endif
214#ifndef OPENSSL_NO_DH
215 const DH_METHOD *meth2;
216#endif
217 if(!ENGINE_set_id(e, engine_cswift_id) ||
218 !ENGINE_set_name(e, engine_cswift_name) ||
219#ifndef OPENSSL_NO_RSA
220 !ENGINE_set_RSA(e, &cswift_rsa) ||
221#endif
222#ifndef OPENSSL_NO_DSA
223 !ENGINE_set_DSA(e, &cswift_dsa) ||
224#endif
225#ifndef OPENSSL_NO_DH
226 !ENGINE_set_DH(e, &cswift_dh) ||
227#endif
228 !ENGINE_set_RAND(e, &cswift_random) ||
229 !ENGINE_set_destroy_function(e, cswift_destroy) ||
230 !ENGINE_set_init_function(e, cswift_init) ||
231 !ENGINE_set_finish_function(e, cswift_finish) ||
232 !ENGINE_set_ctrl_function(e, cswift_ctrl) ||
233 !ENGINE_set_cmd_defns(e, cswift_cmd_defns))
234 return 0;
235
236#ifndef OPENSSL_NO_RSA
237 /* We know that the "PKCS1_SSLeay()" functions hook properly
238 * to the cswift-specific mod_exp and mod_exp_crt so we use
239 * those functions. NB: We don't use ENGINE_openssl() or
240 * anything "more generic" because something like the RSAref
241 * code may not hook properly, and if you own one of these
242 * cards then you have the right to do RSA operations on it
243 * anyway! */
244 meth1 = RSA_PKCS1_SSLeay();
245 cswift_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
246 cswift_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
247 cswift_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
248 cswift_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
249#endif
250
251#ifndef OPENSSL_NO_DH
252 /* Much the same for Diffie-Hellman */
253 meth2 = DH_OpenSSL();
254 cswift_dh.generate_key = meth2->generate_key;
255 cswift_dh.compute_key = meth2->compute_key;
256#endif
257
258 /* Ensure the cswift error handling is set up */
259 ERR_load_CSWIFT_strings();
260 return 1;
261 }
262
263#ifndef ENGINE_DYNAMIC_SUPPORT
264static ENGINE *engine_cswift(void)
265 {
266 ENGINE *ret = ENGINE_new();
267 if(!ret)
268 return NULL;
269 if(!bind_helper(ret))
270 {
271 ENGINE_free(ret);
272 return NULL;
273 }
274 return ret;
275 }
276
277void ENGINE_load_cswift(void)
278 {
279 /* Copied from eng_[openssl|dyn].c */
280 ENGINE *toadd = engine_cswift();
281 if(!toadd) return;
282 ENGINE_add(toadd);
283 ENGINE_free(toadd);
284 ERR_clear_error();
285 }
286#endif
287
288/* This is a process-global DSO handle used for loading and unloading
289 * the CryptoSwift library. NB: This is only set (or unset) during an
290 * init() or finish() call (reference counts permitting) and they're
291 * operating with global locks, so this should be thread-safe
292 * implicitly. */
293static DSO *cswift_dso = NULL;
294
295/* These are the function pointers that are (un)set when the library has
296 * successfully (un)loaded. */
297t_swAcquireAccContext *p_CSwift_AcquireAccContext = NULL;
298t_swAttachKeyParam *p_CSwift_AttachKeyParam = NULL;
299t_swSimpleRequest *p_CSwift_SimpleRequest = NULL;
300t_swReleaseAccContext *p_CSwift_ReleaseAccContext = NULL;
301
302/* Used in the DSO operations. */
303static const char *CSWIFT_LIBNAME = NULL;
304static const char *get_CSWIFT_LIBNAME(void)
305 {
306 if(CSWIFT_LIBNAME)
307 return CSWIFT_LIBNAME;
308 return "swift";
309 }
310static void free_CSWIFT_LIBNAME(void)
311 {
312 if(CSWIFT_LIBNAME)
313 OPENSSL_free((void*)CSWIFT_LIBNAME);
314 CSWIFT_LIBNAME = NULL;
315 }
316static long set_CSWIFT_LIBNAME(const char *name)
317 {
318 free_CSWIFT_LIBNAME();
319 return (((CSWIFT_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
320 }
321static const char *CSWIFT_F1 = "swAcquireAccContext";
322static const char *CSWIFT_F2 = "swAttachKeyParam";
323static const char *CSWIFT_F3 = "swSimpleRequest";
324static const char *CSWIFT_F4 = "swReleaseAccContext";
325
326
327/* CryptoSwift library functions and mechanics - these are used by the
328 * higher-level functions further down. NB: As and where there's no
329 * error checking, take a look lower down where these functions are
330 * called, the checking and error handling is probably down there. */
331
332/* utility function to obtain a context */
333static int get_context(SW_CONTEXT_HANDLE *hac)
334 {
335 SW_STATUS status;
336
337 status = p_CSwift_AcquireAccContext(hac);
338 if(status != SW_OK)
339 return 0;
340 return 1;
341 }
342
343/* similarly to release one. */
344static void release_context(SW_CONTEXT_HANDLE hac)
345 {
346 p_CSwift_ReleaseAccContext(hac);
347 }
348
349/* Destructor (complements the "ENGINE_cswift()" constructor) */
350static int cswift_destroy(ENGINE *e)
351 {
352 free_CSWIFT_LIBNAME();
353 ERR_unload_CSWIFT_strings();
354 return 1;
355 }
356
357/* (de)initialisation functions. */
358static int cswift_init(ENGINE *e)
359 {
360 SW_CONTEXT_HANDLE hac;
361 t_swAcquireAccContext *p1;
362 t_swAttachKeyParam *p2;
363 t_swSimpleRequest *p3;
364 t_swReleaseAccContext *p4;
365
366 if(cswift_dso != NULL)
367 {
368 CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_ALREADY_LOADED);
369 goto err;
370 }
371 /* Attempt to load libswift.so/swift.dll/whatever. */
372 cswift_dso = DSO_load(NULL, get_CSWIFT_LIBNAME(), NULL, 0);
373 if(cswift_dso == NULL)
374 {
375 CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_NOT_LOADED);
376 goto err;
377 }
378 if(!(p1 = (t_swAcquireAccContext *)
379 DSO_bind_func(cswift_dso, CSWIFT_F1)) ||
380 !(p2 = (t_swAttachKeyParam *)
381 DSO_bind_func(cswift_dso, CSWIFT_F2)) ||
382 !(p3 = (t_swSimpleRequest *)
383 DSO_bind_func(cswift_dso, CSWIFT_F3)) ||
384 !(p4 = (t_swReleaseAccContext *)
385 DSO_bind_func(cswift_dso, CSWIFT_F4)))
386 {
387 CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_NOT_LOADED);
388 goto err;
389 }
390 /* Copy the pointers */
391 p_CSwift_AcquireAccContext = p1;
392 p_CSwift_AttachKeyParam = p2;
393 p_CSwift_SimpleRequest = p3;
394 p_CSwift_ReleaseAccContext = p4;
395 /* Try and get a context - if not, we may have a DSO but no
396 * accelerator! */
397 if(!get_context(&hac))
398 {
399 CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_UNIT_FAILURE);
400 goto err;
401 }
402 release_context(hac);
403 /* Everything's fine. */
404 return 1;
405err:
406 if(cswift_dso)
407 {
408 DSO_free(cswift_dso);
409 cswift_dso = NULL;
410 }
411 p_CSwift_AcquireAccContext = NULL;
412 p_CSwift_AttachKeyParam = NULL;
413 p_CSwift_SimpleRequest = NULL;
414 p_CSwift_ReleaseAccContext = NULL;
415 return 0;
416 }
417
418static int cswift_finish(ENGINE *e)
419 {
420 free_CSWIFT_LIBNAME();
421 if(cswift_dso == NULL)
422 {
423 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH,CSWIFT_R_NOT_LOADED);
424 return 0;
425 }
426 if(!DSO_free(cswift_dso))
427 {
428 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH,CSWIFT_R_UNIT_FAILURE);
429 return 0;
430 }
431 cswift_dso = NULL;
432 p_CSwift_AcquireAccContext = NULL;
433 p_CSwift_AttachKeyParam = NULL;
434 p_CSwift_SimpleRequest = NULL;
435 p_CSwift_ReleaseAccContext = NULL;
436 return 1;
437 }
438
439static int cswift_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
440 {
441 int initialised = ((cswift_dso == NULL) ? 0 : 1);
442 switch(cmd)
443 {
444 case CSWIFT_CMD_SO_PATH:
445 if(p == NULL)
446 {
447 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL,ERR_R_PASSED_NULL_PARAMETER);
448 return 0;
449 }
450 if(initialised)
451 {
452 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL,CSWIFT_R_ALREADY_LOADED);
453 return 0;
454 }
455 return set_CSWIFT_LIBNAME((const char *)p);
456 default:
457 break;
458 }
459 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL,CSWIFT_R_CTRL_COMMAND_NOT_IMPLEMENTED);
460 return 0;
461 }
462
463/* Un petit mod_exp */
464static int cswift_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
465 const BIGNUM *m, BN_CTX *ctx)
466 {
467 /* I need somewhere to store temporary serialised values for
468 * use with the CryptoSwift API calls. A neat cheat - I'll use
469 * BIGNUMs from the BN_CTX but access their arrays directly as
470 * byte arrays <grin>. This way I don't have to clean anything
471 * up. */
472 BIGNUM *modulus;
473 BIGNUM *exponent;
474 BIGNUM *argument;
475 BIGNUM *result;
476 SW_STATUS sw_status;
477 SW_LARGENUMBER arg, res;
478 SW_PARAM sw_param;
479 SW_CONTEXT_HANDLE hac;
480 int to_return, acquired;
481
482 modulus = exponent = argument = result = NULL;
483 to_return = 0; /* expect failure */
484 acquired = 0;
485
486 if(!get_context(&hac))
487 {
488 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_UNIT_FAILURE);
489 goto err;
490 }
491 acquired = 1;
492 /* Prepare the params */
493 BN_CTX_start(ctx);
494 modulus = BN_CTX_get(ctx);
495 exponent = BN_CTX_get(ctx);
496 argument = BN_CTX_get(ctx);
497 result = BN_CTX_get(ctx);
498 if(!result)
499 {
500 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BN_CTX_FULL);
501 goto err;
502 }
503 if(!bn_wexpand(modulus, m->top) || !bn_wexpand(exponent, p->top) ||
504 !bn_wexpand(argument, a->top) || !bn_wexpand(result, m->top))
505 {
506 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BN_EXPAND_FAIL);
507 goto err;
508 }
509 sw_param.type = SW_ALG_EXP;
510 sw_param.up.exp.modulus.nbytes = BN_bn2bin(m,
511 (unsigned char *)modulus->d);
512 sw_param.up.exp.modulus.value = (unsigned char *)modulus->d;
513 sw_param.up.exp.exponent.nbytes = BN_bn2bin(p,
514 (unsigned char *)exponent->d);
515 sw_param.up.exp.exponent.value = (unsigned char *)exponent->d;
516 /* Attach the key params */
517 sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
518 switch(sw_status)
519 {
520 case SW_OK:
521 break;
522 case SW_ERR_INPUT_SIZE:
523 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BAD_KEY_SIZE);
524 goto err;
525 default:
526 {
527 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
528 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_REQUEST_FAILED);
529 sprintf(tmpbuf, "%ld", sw_status);
530 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
531 }
532 goto err;
533 }
534 /* Prepare the argument and response */
535 arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
536 arg.value = (unsigned char *)argument->d;
537 res.nbytes = BN_num_bytes(m);
538 memset(result->d, 0, res.nbytes);
539 res.value = (unsigned char *)result->d;
540 /* Perform the operation */
541 if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP, &arg, 1,
542 &res, 1)) != SW_OK)
543 {
544 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
545 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_REQUEST_FAILED);
546 sprintf(tmpbuf, "%ld", sw_status);
547 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
548 goto err;
549 }
550 /* Convert the response */
551 BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
552 to_return = 1;
553err:
554 if(acquired)
555 release_context(hac);
556 BN_CTX_end(ctx);
557 return to_return;
558 }
559
560
561int cswift_bn_32copy(SW_LARGENUMBER * out, const BIGNUM * in)
562{
563 int mod;
564 int numbytes = BN_num_bytes(in);
565
566 mod = 0;
567 while( ((out->nbytes = (numbytes+mod)) % 32) )
568 {
569 mod++;
570 }
571 out->value = (unsigned char*)OPENSSL_malloc(out->nbytes);
572 if(!out->value)
573 {
574 return 0;
575 }
576 BN_bn2bin(in, &out->value[mod]);
577 if(mod)
578 memset(out->value, 0, mod);
579
580 return 1;
581}
582
583/* Un petit mod_exp chinois */
584static int cswift_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
585 const BIGNUM *q, const BIGNUM *dmp1,
586 const BIGNUM *dmq1, const BIGNUM *iqmp, BN_CTX *ctx)
587 {
588 SW_STATUS sw_status;
589 SW_LARGENUMBER arg, res;
590 SW_PARAM sw_param;
591 SW_CONTEXT_HANDLE hac;
592 BIGNUM *result = NULL;
593 BIGNUM *argument = NULL;
594 int to_return = 0; /* expect failure */
595 int acquired = 0;
596
597 sw_param.up.crt.p.value = NULL;
598 sw_param.up.crt.q.value = NULL;
599 sw_param.up.crt.dmp1.value = NULL;
600 sw_param.up.crt.dmq1.value = NULL;
601 sw_param.up.crt.iqmp.value = NULL;
602
603 if(!get_context(&hac))
604 {
605 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_UNIT_FAILURE);
606 goto err;
607 }
608 acquired = 1;
609
610 /* Prepare the params */
611 argument = BN_new();
612 result = BN_new();
613 if(!result || !argument)
614 {
615 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_CTX_FULL);
616 goto err;
617 }
618
619
620 sw_param.type = SW_ALG_CRT;
621 /************************************************************************/
622 /* 04/02/2003 */
623 /* Modified by Frederic Giudicelli (deny-all.com) to overcome the */
624 /* limitation of cswift with values not a multiple of 32 */
625 /************************************************************************/
626 if(!cswift_bn_32copy(&sw_param.up.crt.p, p))
627 {
628 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
629 goto err;
630 }
631 if(!cswift_bn_32copy(&sw_param.up.crt.q, q))
632 {
633 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
634 goto err;
635 }
636 if(!cswift_bn_32copy(&sw_param.up.crt.dmp1, dmp1))
637 {
638 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
639 goto err;
640 }
641 if(!cswift_bn_32copy(&sw_param.up.crt.dmq1, dmq1))
642 {
643 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
644 goto err;
645 }
646 if(!cswift_bn_32copy(&sw_param.up.crt.iqmp, iqmp))
647 {
648 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
649 goto err;
650 }
651 if( !bn_wexpand(argument, a->top) ||
652 !bn_wexpand(result, p->top + q->top))
653 {
654 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
655 goto err;
656 }
657
658 /* Attach the key params */
659 sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
660 switch(sw_status)
661 {
662 case SW_OK:
663 break;
664 case SW_ERR_INPUT_SIZE:
665 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BAD_KEY_SIZE);
666 goto err;
667 default:
668 {
669 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
670 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_REQUEST_FAILED);
671 sprintf(tmpbuf, "%ld", sw_status);
672 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
673 }
674 goto err;
675 }
676 /* Prepare the argument and response */
677 arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
678 arg.value = (unsigned char *)argument->d;
679 res.nbytes = 2 * BN_num_bytes(p);
680 memset(result->d, 0, res.nbytes);
681 res.value = (unsigned char *)result->d;
682 /* Perform the operation */
683 if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP_CRT, &arg, 1,
684 &res, 1)) != SW_OK)
685 {
686 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
687 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_REQUEST_FAILED);
688 sprintf(tmpbuf, "%ld", sw_status);
689 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
690 goto err;
691 }
692 /* Convert the response */
693 BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
694 to_return = 1;
695err:
696 if(sw_param.up.crt.p.value)
697 OPENSSL_free(sw_param.up.crt.p.value);
698 if(sw_param.up.crt.q.value)
699 OPENSSL_free(sw_param.up.crt.q.value);
700 if(sw_param.up.crt.dmp1.value)
701 OPENSSL_free(sw_param.up.crt.dmp1.value);
702 if(sw_param.up.crt.dmq1.value)
703 OPENSSL_free(sw_param.up.crt.dmq1.value);
704 if(sw_param.up.crt.iqmp.value)
705 OPENSSL_free(sw_param.up.crt.iqmp.value);
706 if(result)
707 BN_free(result);
708 if(argument)
709 BN_free(argument);
710 if(acquired)
711 release_context(hac);
712 return to_return;
713 }
714
715#ifndef OPENSSL_NO_RSA
716static int cswift_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
717 {
718 BN_CTX *ctx;
719 int to_return = 0;
720 const RSA_METHOD * def_rsa_method;
721
722 /* Try the limits of RSA (2048 bits) */
723 if(BN_num_bytes(rsa->p) > 128 ||
724 BN_num_bytes(rsa->q) > 128 ||
725 BN_num_bytes(rsa->dmp1) > 128 ||
726 BN_num_bytes(rsa->dmq1) > 128 ||
727 BN_num_bytes(rsa->iqmp) > 128)
728 {
729#ifdef RSA_NULL
730 def_rsa_method=RSA_null_method();
731#else
732#if 0
733 def_rsa_method=RSA_PKCS1_RSAref();
734#else
735 def_rsa_method=RSA_PKCS1_SSLeay();
736#endif
737#endif
738 if(def_rsa_method)
739 return def_rsa_method->rsa_mod_exp(r0, I, rsa);
740 }
741
742 if((ctx = BN_CTX_new()) == NULL)
743 goto err;
744 if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
745 {
746 CSWIFTerr(CSWIFT_F_CSWIFT_RSA_MOD_EXP,CSWIFT_R_MISSING_KEY_COMPONENTS);
747 goto err;
748 }
749 to_return = cswift_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
750 rsa->dmq1, rsa->iqmp, ctx);
751err:
752 if(ctx)
753 BN_CTX_free(ctx);
754 return to_return;
755 }
756#endif
757
758/* This function is aliased to mod_exp (with the mont stuff dropped). */
759static int cswift_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
760 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
761 {
762 const RSA_METHOD * def_rsa_method;
763
764 /* Try the limits of RSA (2048 bits) */
765 if(BN_num_bytes(r) > 256 ||
766 BN_num_bytes(a) > 256 ||
767 BN_num_bytes(m) > 256)
768 {
769#ifdef RSA_NULL
770 def_rsa_method=RSA_null_method();
771#else
772#if 0
773 def_rsa_method=RSA_PKCS1_RSAref();
774#else
775 def_rsa_method=RSA_PKCS1_SSLeay();
776#endif
777#endif
778 if(def_rsa_method)
779 return def_rsa_method->bn_mod_exp(r, a, p, m, ctx, m_ctx);
780 }
781
782 return cswift_mod_exp(r, a, p, m, ctx);
783 }
784
785#ifndef OPENSSL_NO_DSA
786static DSA_SIG *cswift_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa)
787 {
788 SW_CONTEXT_HANDLE hac;
789 SW_PARAM sw_param;
790 SW_STATUS sw_status;
791 SW_LARGENUMBER arg, res;
792 unsigned char *ptr;
793 BN_CTX *ctx;
794 BIGNUM *dsa_p = NULL;
795 BIGNUM *dsa_q = NULL;
796 BIGNUM *dsa_g = NULL;
797 BIGNUM *dsa_key = NULL;
798 BIGNUM *result = NULL;
799 DSA_SIG *to_return = NULL;
800 int acquired = 0;
801
802 if((ctx = BN_CTX_new()) == NULL)
803 goto err;
804 if(!get_context(&hac))
805 {
806 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_UNIT_FAILURE);
807 goto err;
808 }
809 acquired = 1;
810 /* Prepare the params */
811 BN_CTX_start(ctx);
812 dsa_p = BN_CTX_get(ctx);
813 dsa_q = BN_CTX_get(ctx);
814 dsa_g = BN_CTX_get(ctx);
815 dsa_key = BN_CTX_get(ctx);
816 result = BN_CTX_get(ctx);
817 if(!result)
818 {
819 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BN_CTX_FULL);
820 goto err;
821 }
822 if(!bn_wexpand(dsa_p, dsa->p->top) ||
823 !bn_wexpand(dsa_q, dsa->q->top) ||
824 !bn_wexpand(dsa_g, dsa->g->top) ||
825 !bn_wexpand(dsa_key, dsa->priv_key->top) ||
826 !bn_wexpand(result, dsa->p->top))
827 {
828 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BN_EXPAND_FAIL);
829 goto err;
830 }
831 sw_param.type = SW_ALG_DSA;
832 sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
833 (unsigned char *)dsa_p->d);
834 sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
835 sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
836 (unsigned char *)dsa_q->d);
837 sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
838 sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
839 (unsigned char *)dsa_g->d);
840 sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
841 sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->priv_key,
842 (unsigned char *)dsa_key->d);
843 sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
844 /* Attach the key params */
845 sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
846 switch(sw_status)
847 {
848 case SW_OK:
849 break;
850 case SW_ERR_INPUT_SIZE:
851 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BAD_KEY_SIZE);
852 goto err;
853 default:
854 {
855 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
856 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_REQUEST_FAILED);
857 sprintf(tmpbuf, "%ld", sw_status);
858 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
859 }
860 goto err;
861 }
862 /* Prepare the argument and response */
863 arg.nbytes = dlen;
864 arg.value = (unsigned char *)dgst;
865 res.nbytes = BN_num_bytes(dsa->p);
866 memset(result->d, 0, res.nbytes);
867 res.value = (unsigned char *)result->d;
868 /* Perform the operation */
869 sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_SIGN, &arg, 1,
870 &res, 1);
871 if(sw_status != SW_OK)
872 {
873 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
874 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_REQUEST_FAILED);
875 sprintf(tmpbuf, "%ld", sw_status);
876 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
877 goto err;
878 }
879 /* Convert the response */
880 ptr = (unsigned char *)result->d;
881 if((to_return = DSA_SIG_new()) == NULL)
882 goto err;
883 to_return->r = BN_bin2bn((unsigned char *)result->d, 20, NULL);
884 to_return->s = BN_bin2bn((unsigned char *)result->d + 20, 20, NULL);
885
886err:
887 if(acquired)
888 release_context(hac);
889 if(ctx)
890 {
891 BN_CTX_end(ctx);
892 BN_CTX_free(ctx);
893 }
894 return to_return;
895 }
896
897static int cswift_dsa_verify(const unsigned char *dgst, int dgst_len,
898 DSA_SIG *sig, DSA *dsa)
899 {
900 SW_CONTEXT_HANDLE hac;
901 SW_PARAM sw_param;
902 SW_STATUS sw_status;
903 SW_LARGENUMBER arg[2], res;
904 unsigned long sig_result;
905 BN_CTX *ctx;
906 BIGNUM *dsa_p = NULL;
907 BIGNUM *dsa_q = NULL;
908 BIGNUM *dsa_g = NULL;
909 BIGNUM *dsa_key = NULL;
910 BIGNUM *argument = NULL;
911 int to_return = -1;
912 int acquired = 0;
913
914 if((ctx = BN_CTX_new()) == NULL)
915 goto err;
916 if(!get_context(&hac))
917 {
918 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_UNIT_FAILURE);
919 goto err;
920 }
921 acquired = 1;
922 /* Prepare the params */
923 BN_CTX_start(ctx);
924 dsa_p = BN_CTX_get(ctx);
925 dsa_q = BN_CTX_get(ctx);
926 dsa_g = BN_CTX_get(ctx);
927 dsa_key = BN_CTX_get(ctx);
928 argument = BN_CTX_get(ctx);
929 if(!argument)
930 {
931 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BN_CTX_FULL);
932 goto err;
933 }
934 if(!bn_wexpand(dsa_p, dsa->p->top) ||
935 !bn_wexpand(dsa_q, dsa->q->top) ||
936 !bn_wexpand(dsa_g, dsa->g->top) ||
937 !bn_wexpand(dsa_key, dsa->pub_key->top) ||
938 !bn_wexpand(argument, 40))
939 {
940 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BN_EXPAND_FAIL);
941 goto err;
942 }
943 sw_param.type = SW_ALG_DSA;
944 sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
945 (unsigned char *)dsa_p->d);
946 sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
947 sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
948 (unsigned char *)dsa_q->d);
949 sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
950 sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
951 (unsigned char *)dsa_g->d);
952 sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
953 sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->pub_key,
954 (unsigned char *)dsa_key->d);
955 sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
956 /* Attach the key params */
957 sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
958 switch(sw_status)
959 {
960 case SW_OK:
961 break;
962 case SW_ERR_INPUT_SIZE:
963 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BAD_KEY_SIZE);
964 goto err;
965 default:
966 {
967 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
968 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_REQUEST_FAILED);
969 sprintf(tmpbuf, "%ld", sw_status);
970 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
971 }
972 goto err;
973 }
974 /* Prepare the argument and response */
975 arg[0].nbytes = dgst_len;
976 arg[0].value = (unsigned char *)dgst;
977 arg[1].nbytes = 40;
978 arg[1].value = (unsigned char *)argument->d;
979 memset(arg[1].value, 0, 40);
980 BN_bn2bin(sig->r, arg[1].value + 20 - BN_num_bytes(sig->r));
981 BN_bn2bin(sig->s, arg[1].value + 40 - BN_num_bytes(sig->s));
982 res.nbytes = 4; /* unsigned long */
983 res.value = (unsigned char *)(&sig_result);
984 /* Perform the operation */
985 sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_VERIFY, arg, 2,
986 &res, 1);
987 if(sw_status != SW_OK)
988 {
989 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
990 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_REQUEST_FAILED);
991 sprintf(tmpbuf, "%ld", sw_status);
992 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
993 goto err;
994 }
995 /* Convert the response */
996 to_return = ((sig_result == 0) ? 0 : 1);
997
998err:
999 if(acquired)
1000 release_context(hac);
1001 if(ctx)
1002 {
1003 BN_CTX_end(ctx);
1004 BN_CTX_free(ctx);
1005 }
1006 return to_return;
1007 }
1008#endif
1009
1010#ifndef OPENSSL_NO_DH
1011/* This function is aliased to mod_exp (with the dh and mont dropped). */
1012static int cswift_mod_exp_dh(const DH *dh, BIGNUM *r,
1013 const BIGNUM *a, const BIGNUM *p,
1014 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
1015 {
1016 return cswift_mod_exp(r, a, p, m, ctx);
1017 }
1018#endif
1019
1020/* Random bytes are good */
1021static int cswift_rand_bytes(unsigned char *buf, int num)
1022{
1023 SW_CONTEXT_HANDLE hac;
1024 SW_STATUS swrc;
1025 SW_LARGENUMBER largenum;
1026 int acquired = 0;
1027 int to_return = 0; /* assume failure */
1028 unsigned char buf32[1024];
1029
1030
1031 if (!get_context(&hac))
1032 {
1033 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_UNIT_FAILURE);
1034 goto err;
1035 }
1036 acquired = 1;
1037
1038 /************************************************************************/
1039 /* 04/02/2003 */
1040 /* Modified by Frederic Giudicelli (deny-all.com) to overcome the */
1041 /* limitation of cswift with values not a multiple of 32 */
1042 /************************************************************************/
1043
1044 while(num >= sizeof(buf32))
1045 {
1046 largenum.value = buf;
1047 largenum.nbytes = sizeof(buf32);
1048 /* tell CryptoSwift how many bytes we want and where we want it.
1049 * Note: - CryptoSwift cannot do more than 4096 bytes at a time.
1050 * - CryptoSwift can only do multiple of 32-bits. */
1051 swrc = p_CSwift_SimpleRequest(hac, SW_CMD_RAND, NULL, 0, &largenum, 1);
1052 if (swrc != SW_OK)
1053 {
1054 char tmpbuf[20];
1055 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_REQUEST_FAILED);
1056 sprintf(tmpbuf, "%ld", swrc);
1057 ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf);
1058 goto err;
1059 }
1060 buf += sizeof(buf32);
1061 num -= sizeof(buf32);
1062 }
1063 if(num)
1064 {
1065 largenum.nbytes = sizeof(buf32);
1066 largenum.value = buf32;
1067 swrc = p_CSwift_SimpleRequest(hac, SW_CMD_RAND, NULL, 0, &largenum, 1);
1068 if (swrc != SW_OK)
1069 {
1070 char tmpbuf[20];
1071 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_REQUEST_FAILED);
1072 sprintf(tmpbuf, "%ld", swrc);
1073 ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf);
1074 goto err;
1075 }
1076 memcpy(buf, largenum.value, num);
1077 }
1078
1079 to_return = 1; /* success */
1080err:
1081 if (acquired)
1082 release_context(hac);
1083
1084 return to_return;
1085}
1086
1087static int cswift_rand_status(void)
1088{
1089 return 1;
1090}
1091
1092
1093/* This stuff is needed if this ENGINE is being compiled into a self-contained
1094 * shared-library. */
1095#ifdef ENGINE_DYNAMIC_SUPPORT
1096static int bind_fn(ENGINE *e, const char *id)
1097 {
1098 if(id && (strcmp(id, engine_cswift_id) != 0))
1099 return 0;
1100 if(!bind_helper(e))
1101 return 0;
1102 return 1;
1103 }
1104IMPLEMENT_DYNAMIC_CHECK_FN()
1105IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
1106#endif /* ENGINE_DYNAMIC_SUPPORT */
1107
1108#endif /* !OPENSSL_NO_HW_CSWIFT */
1109#endif /* !OPENSSL_NO_HW */
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-11-10 19:04:03 +0000