1 /* crypto/engine/hw_cswift.c */
2 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
60 #include <openssl/crypto.h>
62 #include <openssl/dso.h>
63 #include <openssl/engine.h>
66 #ifndef OPENSSL_NO_HW_CSWIFT
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.
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.
83 #include "vendor_defns/cswift.h"
86 #define CSWIFT_LIB_NAME "cswift engine"
87 #include "hw_cswift_err.c"
89 static int cswift_destroy(ENGINE *e);
90 static int cswift_init(ENGINE *e);
91 static int cswift_finish(ENGINE *e);
92 static int cswift_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
95 static int cswift_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
96 const BIGNUM *m, BN_CTX *ctx);
97 static int cswift_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
98 const BIGNUM *q, const BIGNUM *dmp1, const BIGNUM *dmq1,
99 const BIGNUM *iqmp, BN_CTX *ctx);
101 #ifndef OPENSSL_NO_RSA
103 static int cswift_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
105 /* This function is aliased to mod_exp (with the mont stuff dropped). */
106 static int cswift_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
107 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
109 #ifndef OPENSSL_NO_DSA
111 static DSA_SIG *cswift_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa);
112 static int cswift_dsa_verify(const unsigned char *dgst, int dgst_len,
113 DSA_SIG *sig, DSA *dsa);
116 #ifndef OPENSSL_NO_DH
118 /* This function is alised to mod_exp (with the DH and mont dropped). */
119 static int cswift_mod_exp_dh(const DH *dh, BIGNUM *r,
120 const BIGNUM *a, const BIGNUM *p,
121 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
125 static int cswift_rand_bytes(unsigned char *buf, int num);
126 static int cswift_rand_status(void);
128 /* The definitions for control commands specific to this engine */
129 #define CSWIFT_CMD_SO_PATH ENGINE_CMD_BASE
130 static const ENGINE_CMD_DEFN cswift_cmd_defns[] = {
133 "Specifies the path to the 'cswift' shared library",
134 ENGINE_CMD_FLAG_STRING},
138 #ifndef OPENSSL_NO_RSA
139 /* Our internal RSA_METHOD that we provide pointers to */
140 static RSA_METHOD cswift_rsa =
142 "CryptoSwift RSA method",
158 #ifndef OPENSSL_NO_DSA
159 /* Our internal DSA_METHOD that we provide pointers to */
160 static DSA_METHOD cswift_dsa =
162 "CryptoSwift DSA method",
164 NULL, /* dsa_sign_setup */
166 NULL, /* dsa_mod_exp */
167 NULL, /* bn_mod_exp */
175 #ifndef OPENSSL_NO_DH
176 /* Our internal DH_METHOD that we provide pointers to */
177 static DH_METHOD cswift_dh =
179 "CryptoSwift DH method",
190 static RAND_METHOD cswift_random =
192 /* "CryptoSwift RAND method", */
202 /* Constants used when creating the ENGINE */
203 static const char *engine_cswift_id = "cswift";
204 static const char *engine_cswift_name = "CryptoSwift hardware engine support";
206 /* This internal function is used by ENGINE_cswift() and possibly by the
207 * "dynamic" ENGINE support too */
208 static int bind_helper(ENGINE *e)
210 #ifndef OPENSSL_NO_RSA
211 const RSA_METHOD *meth1;
213 #ifndef OPENSSL_NO_DH
214 const DH_METHOD *meth2;
216 if(!ENGINE_set_id(e, engine_cswift_id) ||
217 !ENGINE_set_name(e, engine_cswift_name) ||
218 #ifndef OPENSSL_NO_RSA
219 !ENGINE_set_RSA(e, &cswift_rsa) ||
221 #ifndef OPENSSL_NO_DSA
222 !ENGINE_set_DSA(e, &cswift_dsa) ||
224 #ifndef OPENSSL_NO_DH
225 !ENGINE_set_DH(e, &cswift_dh) ||
227 !ENGINE_set_RAND(e, &cswift_random) ||
228 !ENGINE_set_init_function(e, cswift_init) ||
229 !ENGINE_set_finish_function(e, cswift_finish) ||
230 !ENGINE_set_ctrl_function(e, cswift_ctrl) ||
231 !ENGINE_set_cmd_defns(e, cswift_cmd_defns))
234 #ifndef OPENSSL_NO_RSA
235 /* We know that the "PKCS1_SSLeay()" functions hook properly
236 * to the cswift-specific mod_exp and mod_exp_crt so we use
237 * those functions. NB: We don't use ENGINE_openssl() or
238 * anything "more generic" because something like the RSAref
239 * code may not hook properly, and if you own one of these
240 * cards then you have the right to do RSA operations on it
242 meth1 = RSA_PKCS1_SSLeay();
243 cswift_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
244 cswift_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
245 cswift_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
246 cswift_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
249 #ifndef OPENSSL_NO_DH
250 /* Much the same for Diffie-Hellman */
251 meth2 = DH_OpenSSL();
252 cswift_dh.generate_key = meth2->generate_key;
253 cswift_dh.compute_key = meth2->compute_key;
256 /* Ensure the cswift error handling is set up */
257 ERR_load_CSWIFT_strings();
261 static ENGINE *engine_cswift(void)
263 ENGINE *ret = ENGINE_new();
266 if(!bind_helper(ret))
274 void ENGINE_load_cswift(void)
276 /* Copied from eng_[openssl|dyn].c */
277 ENGINE *toadd = engine_cswift();
284 /* This is a process-global DSO handle used for loading and unloading
285 * the CryptoSwift library. NB: This is only set (or unset) during an
286 * init() or finish() call (reference counts permitting) and they're
287 * operating with global locks, so this should be thread-safe
289 static DSO *cswift_dso = NULL;
291 /* These are the function pointers that are (un)set when the library has
292 * successfully (un)loaded. */
293 t_swAcquireAccContext *p_CSwift_AcquireAccContext = NULL;
294 t_swAttachKeyParam *p_CSwift_AttachKeyParam = NULL;
295 t_swSimpleRequest *p_CSwift_SimpleRequest = NULL;
296 t_swReleaseAccContext *p_CSwift_ReleaseAccContext = NULL;
298 /* Used in the DSO operations. */
299 static const char *CSWIFT_LIBNAME = NULL;
300 static const char *get_CSWIFT_LIBNAME(void)
303 return CSWIFT_LIBNAME;
306 static void free_CSWIFT_LIBNAME(void)
309 OPENSSL_free((void*)CSWIFT_LIBNAME);
310 CSWIFT_LIBNAME = NULL;
312 static long set_CSWIFT_LIBNAME(const char *name)
314 free_CSWIFT_LIBNAME();
315 return (((CSWIFT_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);
317 static const char *CSWIFT_F1 = "swAcquireAccContext";
318 static const char *CSWIFT_F2 = "swAttachKeyParam";
319 static const char *CSWIFT_F3 = "swSimpleRequest";
320 static const char *CSWIFT_F4 = "swReleaseAccContext";
323 /* CryptoSwift library functions and mechanics - these are used by the
324 * higher-level functions further down. NB: As and where there's no
325 * error checking, take a look lower down where these functions are
326 * called, the checking and error handling is probably down there. */
328 /* utility function to obtain a context */
329 static int get_context(SW_CONTEXT_HANDLE *hac)
333 status = p_CSwift_AcquireAccContext(hac);
339 /* similarly to release one. */
340 static void release_context(SW_CONTEXT_HANDLE hac)
342 p_CSwift_ReleaseAccContext(hac);
345 /* Destructor (complements the "ENGINE_cswift()" constructor) */
346 static int cswift_destroy(ENGINE *e)
348 free_CSWIFT_LIBNAME();
349 ERR_unload_CSWIFT_strings();
353 /* (de)initialisation functions. */
354 static int cswift_init(ENGINE *e)
356 SW_CONTEXT_HANDLE hac;
357 t_swAcquireAccContext *p1;
358 t_swAttachKeyParam *p2;
359 t_swSimpleRequest *p3;
360 t_swReleaseAccContext *p4;
362 if(cswift_dso != NULL)
364 CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_ALREADY_LOADED);
367 /* Attempt to load libswift.so/swift.dll/whatever. */
368 cswift_dso = DSO_load(NULL, get_CSWIFT_LIBNAME(), NULL, 0);
369 if(cswift_dso == NULL)
371 CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_NOT_LOADED);
374 if(!(p1 = (t_swAcquireAccContext *)
375 DSO_bind_func(cswift_dso, CSWIFT_F1)) ||
376 !(p2 = (t_swAttachKeyParam *)
377 DSO_bind_func(cswift_dso, CSWIFT_F2)) ||
378 !(p3 = (t_swSimpleRequest *)
379 DSO_bind_func(cswift_dso, CSWIFT_F3)) ||
380 !(p4 = (t_swReleaseAccContext *)
381 DSO_bind_func(cswift_dso, CSWIFT_F4)))
383 CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_NOT_LOADED);
386 /* Copy the pointers */
387 p_CSwift_AcquireAccContext = p1;
388 p_CSwift_AttachKeyParam = p2;
389 p_CSwift_SimpleRequest = p3;
390 p_CSwift_ReleaseAccContext = p4;
391 /* Try and get a context - if not, we may have a DSO but no
393 if(!get_context(&hac))
395 CSWIFTerr(CSWIFT_F_CSWIFT_INIT,CSWIFT_R_UNIT_FAILURE);
398 release_context(hac);
399 /* Everything's fine. */
403 DSO_free(cswift_dso);
404 p_CSwift_AcquireAccContext = NULL;
405 p_CSwift_AttachKeyParam = NULL;
406 p_CSwift_SimpleRequest = NULL;
407 p_CSwift_ReleaseAccContext = NULL;
411 static int cswift_finish(ENGINE *e)
413 free_CSWIFT_LIBNAME();
414 if(cswift_dso == NULL)
416 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH,CSWIFT_R_NOT_LOADED);
419 if(!DSO_free(cswift_dso))
421 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH,CSWIFT_R_UNIT_FAILURE);
425 p_CSwift_AcquireAccContext = NULL;
426 p_CSwift_AttachKeyParam = NULL;
427 p_CSwift_SimpleRequest = NULL;
428 p_CSwift_ReleaseAccContext = NULL;
432 static int cswift_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
434 int initialised = ((cswift_dso == NULL) ? 0 : 1);
437 case CSWIFT_CMD_SO_PATH:
440 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL,ERR_R_PASSED_NULL_PARAMETER);
445 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL,CSWIFT_R_ALREADY_LOADED);
448 return set_CSWIFT_LIBNAME((const char *)p);
452 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL,CSWIFT_R_CTRL_COMMAND_NOT_IMPLEMENTED);
456 /* Un petit mod_exp */
457 static int cswift_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
458 const BIGNUM *m, BN_CTX *ctx)
460 /* I need somewhere to store temporary serialised values for
461 * use with the CryptoSwift API calls. A neat cheat - I'll use
462 * BIGNUMs from the BN_CTX but access their arrays directly as
463 * byte arrays <grin>. This way I don't have to clean anything
470 SW_LARGENUMBER arg, res;
472 SW_CONTEXT_HANDLE hac;
473 int to_return, acquired;
475 modulus = exponent = argument = result = NULL;
476 to_return = 0; /* expect failure */
479 if(!get_context(&hac))
481 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_UNIT_FAILURE);
485 /* Prepare the params */
487 modulus = BN_CTX_get(ctx);
488 exponent = BN_CTX_get(ctx);
489 argument = BN_CTX_get(ctx);
490 result = BN_CTX_get(ctx);
493 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BN_CTX_FULL);
496 if(!bn_wexpand(modulus, m->top) || !bn_wexpand(exponent, p->top) ||
497 !bn_wexpand(argument, a->top) || !bn_wexpand(result, m->top))
499 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BN_EXPAND_FAIL);
502 sw_param.type = SW_ALG_EXP;
503 sw_param.up.exp.modulus.nbytes = BN_bn2bin(m,
504 (unsigned char *)modulus->d);
505 sw_param.up.exp.modulus.value = (unsigned char *)modulus->d;
506 sw_param.up.exp.exponent.nbytes = BN_bn2bin(p,
507 (unsigned char *)exponent->d);
508 sw_param.up.exp.exponent.value = (unsigned char *)exponent->d;
509 /* Attach the key params */
510 sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
515 case SW_ERR_INPUT_SIZE:
516 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_BAD_KEY_SIZE);
520 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
521 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_REQUEST_FAILED);
522 sprintf(tmpbuf, "%ld", sw_status);
523 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
527 /* Prepare the argument and response */
528 arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
529 arg.value = (unsigned char *)argument->d;
530 res.nbytes = BN_num_bytes(m);
531 memset(result->d, 0, res.nbytes);
532 res.value = (unsigned char *)result->d;
533 /* Perform the operation */
534 if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP, &arg, 1,
537 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
538 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP,CSWIFT_R_REQUEST_FAILED);
539 sprintf(tmpbuf, "%ld", sw_status);
540 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
543 /* Convert the response */
544 BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
548 release_context(hac);
553 /* Un petit mod_exp chinois */
554 static int cswift_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
555 const BIGNUM *q, const BIGNUM *dmp1,
556 const BIGNUM *dmq1, const BIGNUM *iqmp, BN_CTX *ctx)
559 SW_LARGENUMBER arg, res;
561 SW_CONTEXT_HANDLE hac;
562 BIGNUM *rsa_p = NULL;
563 BIGNUM *rsa_q = NULL;
564 BIGNUM *rsa_dmp1 = NULL;
565 BIGNUM *rsa_dmq1 = NULL;
566 BIGNUM *rsa_iqmp = NULL;
567 BIGNUM *argument = NULL;
568 BIGNUM *result = NULL;
569 int to_return = 0; /* expect failure */
572 if(!get_context(&hac))
574 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_UNIT_FAILURE);
578 /* Prepare the params */
580 rsa_p = BN_CTX_get(ctx);
581 rsa_q = BN_CTX_get(ctx);
582 rsa_dmp1 = BN_CTX_get(ctx);
583 rsa_dmq1 = BN_CTX_get(ctx);
584 rsa_iqmp = BN_CTX_get(ctx);
585 argument = BN_CTX_get(ctx);
586 result = BN_CTX_get(ctx);
589 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_CTX_FULL);
592 if(!bn_wexpand(rsa_p, p->top) || !bn_wexpand(rsa_q, q->top) ||
593 !bn_wexpand(rsa_dmp1, dmp1->top) ||
594 !bn_wexpand(rsa_dmq1, dmq1->top) ||
595 !bn_wexpand(rsa_iqmp, iqmp->top) ||
596 !bn_wexpand(argument, a->top) ||
597 !bn_wexpand(result, p->top + q->top))
599 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BN_EXPAND_FAIL);
602 sw_param.type = SW_ALG_CRT;
603 sw_param.up.crt.p.nbytes = BN_bn2bin(p, (unsigned char *)rsa_p->d);
604 sw_param.up.crt.p.value = (unsigned char *)rsa_p->d;
605 sw_param.up.crt.q.nbytes = BN_bn2bin(q, (unsigned char *)rsa_q->d);
606 sw_param.up.crt.q.value = (unsigned char *)rsa_q->d;
607 sw_param.up.crt.dmp1.nbytes = BN_bn2bin(dmp1,
608 (unsigned char *)rsa_dmp1->d);
609 sw_param.up.crt.dmp1.value = (unsigned char *)rsa_dmp1->d;
610 sw_param.up.crt.dmq1.nbytes = BN_bn2bin(dmq1,
611 (unsigned char *)rsa_dmq1->d);
612 sw_param.up.crt.dmq1.value = (unsigned char *)rsa_dmq1->d;
613 sw_param.up.crt.iqmp.nbytes = BN_bn2bin(iqmp,
614 (unsigned char *)rsa_iqmp->d);
615 sw_param.up.crt.iqmp.value = (unsigned char *)rsa_iqmp->d;
616 /* Attach the key params */
617 sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
622 case SW_ERR_INPUT_SIZE:
623 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_BAD_KEY_SIZE);
627 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
628 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_REQUEST_FAILED);
629 sprintf(tmpbuf, "%ld", sw_status);
630 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
634 /* Prepare the argument and response */
635 arg.nbytes = BN_bn2bin(a, (unsigned char *)argument->d);
636 arg.value = (unsigned char *)argument->d;
637 res.nbytes = 2 * BN_num_bytes(p);
638 memset(result->d, 0, res.nbytes);
639 res.value = (unsigned char *)result->d;
640 /* Perform the operation */
641 if((sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_MODEXP_CRT, &arg, 1,
644 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
645 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT,CSWIFT_R_REQUEST_FAILED);
646 sprintf(tmpbuf, "%ld", sw_status);
647 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
650 /* Convert the response */
651 BN_bin2bn((unsigned char *)result->d, res.nbytes, r);
655 release_context(hac);
660 #ifndef OPENSSL_NO_RSA
661 static int cswift_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
666 if((ctx = BN_CTX_new()) == NULL)
668 if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp)
670 CSWIFTerr(CSWIFT_F_CSWIFT_RSA_MOD_EXP,CSWIFT_R_MISSING_KEY_COMPONENTS);
673 to_return = cswift_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1,
674 rsa->dmq1, rsa->iqmp, ctx);
682 /* This function is aliased to mod_exp (with the mont stuff dropped). */
683 static int cswift_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
684 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
686 return cswift_mod_exp(r, a, p, m, ctx);
689 #ifndef OPENSSL_NO_DSA
690 static DSA_SIG *cswift_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa)
692 SW_CONTEXT_HANDLE hac;
695 SW_LARGENUMBER arg, res;
698 BIGNUM *dsa_p = NULL;
699 BIGNUM *dsa_q = NULL;
700 BIGNUM *dsa_g = NULL;
701 BIGNUM *dsa_key = NULL;
702 BIGNUM *result = NULL;
703 DSA_SIG *to_return = NULL;
706 if((ctx = BN_CTX_new()) == NULL)
708 if(!get_context(&hac))
710 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_UNIT_FAILURE);
714 /* Prepare the params */
716 dsa_p = BN_CTX_get(ctx);
717 dsa_q = BN_CTX_get(ctx);
718 dsa_g = BN_CTX_get(ctx);
719 dsa_key = BN_CTX_get(ctx);
720 result = BN_CTX_get(ctx);
723 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BN_CTX_FULL);
726 if(!bn_wexpand(dsa_p, dsa->p->top) ||
727 !bn_wexpand(dsa_q, dsa->q->top) ||
728 !bn_wexpand(dsa_g, dsa->g->top) ||
729 !bn_wexpand(dsa_key, dsa->priv_key->top) ||
730 !bn_wexpand(result, dsa->p->top))
732 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BN_EXPAND_FAIL);
735 sw_param.type = SW_ALG_DSA;
736 sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
737 (unsigned char *)dsa_p->d);
738 sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
739 sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
740 (unsigned char *)dsa_q->d);
741 sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
742 sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
743 (unsigned char *)dsa_g->d);
744 sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
745 sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->priv_key,
746 (unsigned char *)dsa_key->d);
747 sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
748 /* Attach the key params */
749 sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
754 case SW_ERR_INPUT_SIZE:
755 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_BAD_KEY_SIZE);
759 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
760 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_REQUEST_FAILED);
761 sprintf(tmpbuf, "%ld", sw_status);
762 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
766 /* Prepare the argument and response */
768 arg.value = (unsigned char *)dgst;
769 res.nbytes = BN_num_bytes(dsa->p);
770 memset(result->d, 0, res.nbytes);
771 res.value = (unsigned char *)result->d;
772 /* Perform the operation */
773 sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_SIGN, &arg, 1,
775 if(sw_status != SW_OK)
777 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
778 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN,CSWIFT_R_REQUEST_FAILED);
779 sprintf(tmpbuf, "%ld", sw_status);
780 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
783 /* Convert the response */
784 ptr = (unsigned char *)result->d;
785 if((to_return = DSA_SIG_new()) == NULL)
787 to_return->r = BN_bin2bn((unsigned char *)result->d, 20, NULL);
788 to_return->s = BN_bin2bn((unsigned char *)result->d + 20, 20, NULL);
792 release_context(hac);
801 static int cswift_dsa_verify(const unsigned char *dgst, int dgst_len,
802 DSA_SIG *sig, DSA *dsa)
804 SW_CONTEXT_HANDLE hac;
807 SW_LARGENUMBER arg[2], res;
808 unsigned long sig_result;
810 BIGNUM *dsa_p = NULL;
811 BIGNUM *dsa_q = NULL;
812 BIGNUM *dsa_g = NULL;
813 BIGNUM *dsa_key = NULL;
814 BIGNUM *argument = NULL;
818 if((ctx = BN_CTX_new()) == NULL)
820 if(!get_context(&hac))
822 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_UNIT_FAILURE);
826 /* Prepare the params */
828 dsa_p = BN_CTX_get(ctx);
829 dsa_q = BN_CTX_get(ctx);
830 dsa_g = BN_CTX_get(ctx);
831 dsa_key = BN_CTX_get(ctx);
832 argument = BN_CTX_get(ctx);
835 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BN_CTX_FULL);
838 if(!bn_wexpand(dsa_p, dsa->p->top) ||
839 !bn_wexpand(dsa_q, dsa->q->top) ||
840 !bn_wexpand(dsa_g, dsa->g->top) ||
841 !bn_wexpand(dsa_key, dsa->pub_key->top) ||
842 !bn_wexpand(argument, 40))
844 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BN_EXPAND_FAIL);
847 sw_param.type = SW_ALG_DSA;
848 sw_param.up.dsa.p.nbytes = BN_bn2bin(dsa->p,
849 (unsigned char *)dsa_p->d);
850 sw_param.up.dsa.p.value = (unsigned char *)dsa_p->d;
851 sw_param.up.dsa.q.nbytes = BN_bn2bin(dsa->q,
852 (unsigned char *)dsa_q->d);
853 sw_param.up.dsa.q.value = (unsigned char *)dsa_q->d;
854 sw_param.up.dsa.g.nbytes = BN_bn2bin(dsa->g,
855 (unsigned char *)dsa_g->d);
856 sw_param.up.dsa.g.value = (unsigned char *)dsa_g->d;
857 sw_param.up.dsa.key.nbytes = BN_bn2bin(dsa->pub_key,
858 (unsigned char *)dsa_key->d);
859 sw_param.up.dsa.key.value = (unsigned char *)dsa_key->d;
860 /* Attach the key params */
861 sw_status = p_CSwift_AttachKeyParam(hac, &sw_param);
866 case SW_ERR_INPUT_SIZE:
867 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_BAD_KEY_SIZE);
871 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
872 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_REQUEST_FAILED);
873 sprintf(tmpbuf, "%ld", sw_status);
874 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
878 /* Prepare the argument and response */
879 arg[0].nbytes = dgst_len;
880 arg[0].value = (unsigned char *)dgst;
882 arg[1].value = (unsigned char *)argument->d;
883 memset(arg[1].value, 0, 40);
884 BN_bn2bin(sig->r, arg[1].value + 20 - BN_num_bytes(sig->r));
885 BN_bn2bin(sig->s, arg[1].value + 40 - BN_num_bytes(sig->s));
886 res.nbytes = 4; /* unsigned long */
887 res.value = (unsigned char *)(&sig_result);
888 /* Perform the operation */
889 sw_status = p_CSwift_SimpleRequest(hac, SW_CMD_DSS_VERIFY, arg, 2,
891 if(sw_status != SW_OK)
893 char tmpbuf[DECIMAL_SIZE(sw_status)+1];
894 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY,CSWIFT_R_REQUEST_FAILED);
895 sprintf(tmpbuf, "%ld", sw_status);
896 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf);
899 /* Convert the response */
900 to_return = ((sig_result == 0) ? 0 : 1);
904 release_context(hac);
914 #ifndef OPENSSL_NO_DH
915 /* This function is aliased to mod_exp (with the dh and mont dropped). */
916 static int cswift_mod_exp_dh(const DH *dh, BIGNUM *r,
917 const BIGNUM *a, const BIGNUM *p,
918 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
920 return cswift_mod_exp(r, a, p, m, ctx);
924 /* Random bytes are good */
925 static int cswift_rand_bytes(unsigned char *buf, int num)
927 SW_CONTEXT_HANDLE hac;
929 SW_LARGENUMBER largenum;
932 int to_return = 0; /* assume failure */
934 if (!get_context(&hac))
936 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_UNIT_FAILURE);
943 /* tell CryptoSwift how many bytes we want and where we want it.
944 * Note: - CryptoSwift cannot do more than 4096 bytes at a time.
945 * - CryptoSwift can only do multiple of 32-bits. */
946 largenum.value = (SW_BYTE *) buf + nbytes;
947 if (4096 > num - nbytes)
948 largenum.nbytes = num - nbytes;
950 largenum.nbytes = 4096;
952 swrc = p_CSwift_SimpleRequest(hac, SW_CMD_RAND, NULL, 0, &largenum, 1);
956 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_REQUEST_FAILED);
957 sprintf(tmpbuf, "%ld", swrc);
958 ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf);
962 nbytes += largenum.nbytes;
964 to_return = 1; /* success */
968 release_context(hac);
972 static int cswift_rand_status(void)
978 /* This stuff is needed if this ENGINE is being compiled into a self-contained
980 #ifdef ENGINE_DYNAMIC_SUPPORT
981 static int bind_fn(ENGINE *e, const char *id)
983 if(id && (strcmp(id, engine_cswift_id) != 0))
989 IMPLEMENT_DYNAMIC_CHECK_FN()
990 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
991 #endif /* ENGINE_DYNAMIC_SUPPORT */
993 #endif /* !OPENSSL_NO_HW_CSWIFT */
994 #endif /* !OPENSSL_NO_HW */