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_destroy_function(e
, cswift_destroy
) ||
229 !ENGINE_set_init_function(e
, cswift_init
) ||
230 !ENGINE_set_finish_function(e
, cswift_finish
) ||
231 !ENGINE_set_ctrl_function(e
, cswift_ctrl
) ||
232 !ENGINE_set_cmd_defns(e
, cswift_cmd_defns
))
235 #ifndef OPENSSL_NO_RSA
236 /* We know that the "PKCS1_SSLeay()" functions hook properly
237 * to the cswift-specific mod_exp and mod_exp_crt so we use
238 * those functions. NB: We don't use ENGINE_openssl() or
239 * anything "more generic" because something like the RSAref
240 * code may not hook properly, and if you own one of these
241 * cards then you have the right to do RSA operations on it
243 meth1
= RSA_PKCS1_SSLeay();
244 cswift_rsa
.rsa_pub_enc
= meth1
->rsa_pub_enc
;
245 cswift_rsa
.rsa_pub_dec
= meth1
->rsa_pub_dec
;
246 cswift_rsa
.rsa_priv_enc
= meth1
->rsa_priv_enc
;
247 cswift_rsa
.rsa_priv_dec
= meth1
->rsa_priv_dec
;
250 #ifndef OPENSSL_NO_DH
251 /* Much the same for Diffie-Hellman */
252 meth2
= DH_OpenSSL();
253 cswift_dh
.generate_key
= meth2
->generate_key
;
254 cswift_dh
.compute_key
= meth2
->compute_key
;
257 /* Ensure the cswift error handling is set up */
258 ERR_load_CSWIFT_strings();
262 static ENGINE
*engine_cswift(void)
264 ENGINE
*ret
= ENGINE_new();
267 if(!bind_helper(ret
))
275 void ENGINE_load_cswift(void)
277 /* Copied from eng_[openssl|dyn].c */
278 ENGINE
*toadd
= engine_cswift();
285 /* This is a process-global DSO handle used for loading and unloading
286 * the CryptoSwift library. NB: This is only set (or unset) during an
287 * init() or finish() call (reference counts permitting) and they're
288 * operating with global locks, so this should be thread-safe
290 static DSO
*cswift_dso
= NULL
;
292 /* These are the function pointers that are (un)set when the library has
293 * successfully (un)loaded. */
294 t_swAcquireAccContext
*p_CSwift_AcquireAccContext
= NULL
;
295 t_swAttachKeyParam
*p_CSwift_AttachKeyParam
= NULL
;
296 t_swSimpleRequest
*p_CSwift_SimpleRequest
= NULL
;
297 t_swReleaseAccContext
*p_CSwift_ReleaseAccContext
= NULL
;
299 /* Used in the DSO operations. */
300 static const char *CSWIFT_LIBNAME
= NULL
;
301 static const char *get_CSWIFT_LIBNAME(void)
304 return CSWIFT_LIBNAME
;
307 static void free_CSWIFT_LIBNAME(void)
310 OPENSSL_free((void*)CSWIFT_LIBNAME
);
311 CSWIFT_LIBNAME
= NULL
;
313 static long set_CSWIFT_LIBNAME(const char *name
)
315 free_CSWIFT_LIBNAME();
316 return (((CSWIFT_LIBNAME
= BUF_strdup(name
)) != NULL
) ? 1 : 0);
318 static const char *CSWIFT_F1
= "swAcquireAccContext";
319 static const char *CSWIFT_F2
= "swAttachKeyParam";
320 static const char *CSWIFT_F3
= "swSimpleRequest";
321 static const char *CSWIFT_F4
= "swReleaseAccContext";
324 /* CryptoSwift library functions and mechanics - these are used by the
325 * higher-level functions further down. NB: As and where there's no
326 * error checking, take a look lower down where these functions are
327 * called, the checking and error handling is probably down there. */
329 /* utility function to obtain a context */
330 static int get_context(SW_CONTEXT_HANDLE
*hac
)
334 status
= p_CSwift_AcquireAccContext(hac
);
340 /* similarly to release one. */
341 static void release_context(SW_CONTEXT_HANDLE hac
)
343 p_CSwift_ReleaseAccContext(hac
);
346 /* Destructor (complements the "ENGINE_cswift()" constructor) */
347 static int cswift_destroy(ENGINE
*e
)
349 free_CSWIFT_LIBNAME();
350 ERR_unload_CSWIFT_strings();
354 /* (de)initialisation functions. */
355 static int cswift_init(ENGINE
*e
)
357 SW_CONTEXT_HANDLE hac
;
358 t_swAcquireAccContext
*p1
;
359 t_swAttachKeyParam
*p2
;
360 t_swSimpleRequest
*p3
;
361 t_swReleaseAccContext
*p4
;
363 if(cswift_dso
!= NULL
)
365 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_ALREADY_LOADED
);
368 /* Attempt to load libswift.so/swift.dll/whatever. */
369 cswift_dso
= DSO_load(NULL
, get_CSWIFT_LIBNAME(), NULL
, 0);
370 if(cswift_dso
== NULL
)
372 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_NOT_LOADED
);
375 if(!(p1
= (t_swAcquireAccContext
*)
376 DSO_bind_func(cswift_dso
, CSWIFT_F1
)) ||
377 !(p2
= (t_swAttachKeyParam
*)
378 DSO_bind_func(cswift_dso
, CSWIFT_F2
)) ||
379 !(p3
= (t_swSimpleRequest
*)
380 DSO_bind_func(cswift_dso
, CSWIFT_F3
)) ||
381 !(p4
= (t_swReleaseAccContext
*)
382 DSO_bind_func(cswift_dso
, CSWIFT_F4
)))
384 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_NOT_LOADED
);
387 /* Copy the pointers */
388 p_CSwift_AcquireAccContext
= p1
;
389 p_CSwift_AttachKeyParam
= p2
;
390 p_CSwift_SimpleRequest
= p3
;
391 p_CSwift_ReleaseAccContext
= p4
;
392 /* Try and get a context - if not, we may have a DSO but no
394 if(!get_context(&hac
))
396 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_UNIT_FAILURE
);
399 release_context(hac
);
400 /* Everything's fine. */
404 DSO_free(cswift_dso
);
405 p_CSwift_AcquireAccContext
= NULL
;
406 p_CSwift_AttachKeyParam
= NULL
;
407 p_CSwift_SimpleRequest
= NULL
;
408 p_CSwift_ReleaseAccContext
= NULL
;
412 static int cswift_finish(ENGINE
*e
)
414 free_CSWIFT_LIBNAME();
415 if(cswift_dso
== NULL
)
417 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH
,CSWIFT_R_NOT_LOADED
);
420 if(!DSO_free(cswift_dso
))
422 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH
,CSWIFT_R_UNIT_FAILURE
);
426 p_CSwift_AcquireAccContext
= NULL
;
427 p_CSwift_AttachKeyParam
= NULL
;
428 p_CSwift_SimpleRequest
= NULL
;
429 p_CSwift_ReleaseAccContext
= NULL
;
433 static int cswift_ctrl(ENGINE
*e
, int cmd
, long i
, void *p
, void (*f
)())
435 int initialised
= ((cswift_dso
== NULL
) ? 0 : 1);
438 case CSWIFT_CMD_SO_PATH
:
441 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
,ERR_R_PASSED_NULL_PARAMETER
);
446 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
,CSWIFT_R_ALREADY_LOADED
);
449 return set_CSWIFT_LIBNAME((const char *)p
);
453 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
,CSWIFT_R_CTRL_COMMAND_NOT_IMPLEMENTED
);
457 /* Un petit mod_exp */
458 static int cswift_mod_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
459 const BIGNUM
*m
, BN_CTX
*ctx
)
461 /* I need somewhere to store temporary serialised values for
462 * use with the CryptoSwift API calls. A neat cheat - I'll use
463 * BIGNUMs from the BN_CTX but access their arrays directly as
464 * byte arrays <grin>. This way I don't have to clean anything
471 SW_LARGENUMBER arg
, res
;
473 SW_CONTEXT_HANDLE hac
;
474 int to_return
, acquired
;
476 modulus
= exponent
= argument
= result
= NULL
;
477 to_return
= 0; /* expect failure */
480 if(!get_context(&hac
))
482 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_UNIT_FAILURE
);
486 /* Prepare the params */
488 modulus
= BN_CTX_get(ctx
);
489 exponent
= BN_CTX_get(ctx
);
490 argument
= BN_CTX_get(ctx
);
491 result
= BN_CTX_get(ctx
);
494 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_BN_CTX_FULL
);
497 if(!bn_wexpand(modulus
, m
->top
) || !bn_wexpand(exponent
, p
->top
) ||
498 !bn_wexpand(argument
, a
->top
) || !bn_wexpand(result
, m
->top
))
500 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_BN_EXPAND_FAIL
);
503 sw_param
.type
= SW_ALG_EXP
;
504 sw_param
.up
.exp
.modulus
.nbytes
= BN_bn2bin(m
,
505 (unsigned char *)modulus
->d
);
506 sw_param
.up
.exp
.modulus
.value
= (unsigned char *)modulus
->d
;
507 sw_param
.up
.exp
.exponent
.nbytes
= BN_bn2bin(p
,
508 (unsigned char *)exponent
->d
);
509 sw_param
.up
.exp
.exponent
.value
= (unsigned char *)exponent
->d
;
510 /* Attach the key params */
511 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
516 case SW_ERR_INPUT_SIZE
:
517 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_BAD_KEY_SIZE
);
521 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
522 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_REQUEST_FAILED
);
523 sprintf(tmpbuf
, "%ld", sw_status
);
524 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
528 /* Prepare the argument and response */
529 arg
.nbytes
= BN_bn2bin(a
, (unsigned char *)argument
->d
);
530 arg
.value
= (unsigned char *)argument
->d
;
531 res
.nbytes
= BN_num_bytes(m
);
532 memset(result
->d
, 0, res
.nbytes
);
533 res
.value
= (unsigned char *)result
->d
;
534 /* Perform the operation */
535 if((sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_MODEXP
, &arg
, 1,
538 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
539 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_REQUEST_FAILED
);
540 sprintf(tmpbuf
, "%ld", sw_status
);
541 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
544 /* Convert the response */
545 BN_bin2bn((unsigned char *)result
->d
, res
.nbytes
, r
);
549 release_context(hac
);
554 /* Un petit mod_exp chinois */
555 static int cswift_mod_exp_crt(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
556 const BIGNUM
*q
, const BIGNUM
*dmp1
,
557 const BIGNUM
*dmq1
, const BIGNUM
*iqmp
, BN_CTX
*ctx
)
560 SW_LARGENUMBER arg
, res
;
562 SW_CONTEXT_HANDLE hac
;
563 BIGNUM
*rsa_p
= NULL
;
564 BIGNUM
*rsa_q
= NULL
;
565 BIGNUM
*rsa_dmp1
= NULL
;
566 BIGNUM
*rsa_dmq1
= NULL
;
567 BIGNUM
*rsa_iqmp
= NULL
;
568 BIGNUM
*argument
= NULL
;
569 BIGNUM
*result
= NULL
;
570 int to_return
= 0; /* expect failure */
573 if(!get_context(&hac
))
575 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_UNIT_FAILURE
);
579 /* Prepare the params */
581 rsa_p
= BN_CTX_get(ctx
);
582 rsa_q
= BN_CTX_get(ctx
);
583 rsa_dmp1
= BN_CTX_get(ctx
);
584 rsa_dmq1
= BN_CTX_get(ctx
);
585 rsa_iqmp
= BN_CTX_get(ctx
);
586 argument
= BN_CTX_get(ctx
);
587 result
= BN_CTX_get(ctx
);
590 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_BN_CTX_FULL
);
593 if(!bn_wexpand(rsa_p
, p
->top
) || !bn_wexpand(rsa_q
, q
->top
) ||
594 !bn_wexpand(rsa_dmp1
, dmp1
->top
) ||
595 !bn_wexpand(rsa_dmq1
, dmq1
->top
) ||
596 !bn_wexpand(rsa_iqmp
, iqmp
->top
) ||
597 !bn_wexpand(argument
, a
->top
) ||
598 !bn_wexpand(result
, p
->top
+ q
->top
))
600 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_BN_EXPAND_FAIL
);
603 sw_param
.type
= SW_ALG_CRT
;
604 sw_param
.up
.crt
.p
.nbytes
= BN_bn2bin(p
, (unsigned char *)rsa_p
->d
);
605 sw_param
.up
.crt
.p
.value
= (unsigned char *)rsa_p
->d
;
606 sw_param
.up
.crt
.q
.nbytes
= BN_bn2bin(q
, (unsigned char *)rsa_q
->d
);
607 sw_param
.up
.crt
.q
.value
= (unsigned char *)rsa_q
->d
;
608 sw_param
.up
.crt
.dmp1
.nbytes
= BN_bn2bin(dmp1
,
609 (unsigned char *)rsa_dmp1
->d
);
610 sw_param
.up
.crt
.dmp1
.value
= (unsigned char *)rsa_dmp1
->d
;
611 sw_param
.up
.crt
.dmq1
.nbytes
= BN_bn2bin(dmq1
,
612 (unsigned char *)rsa_dmq1
->d
);
613 sw_param
.up
.crt
.dmq1
.value
= (unsigned char *)rsa_dmq1
->d
;
614 sw_param
.up
.crt
.iqmp
.nbytes
= BN_bn2bin(iqmp
,
615 (unsigned char *)rsa_iqmp
->d
);
616 sw_param
.up
.crt
.iqmp
.value
= (unsigned char *)rsa_iqmp
->d
;
617 /* Attach the key params */
618 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
623 case SW_ERR_INPUT_SIZE
:
624 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_BAD_KEY_SIZE
);
628 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
629 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_REQUEST_FAILED
);
630 sprintf(tmpbuf
, "%ld", sw_status
);
631 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
635 /* Prepare the argument and response */
636 arg
.nbytes
= BN_bn2bin(a
, (unsigned char *)argument
->d
);
637 arg
.value
= (unsigned char *)argument
->d
;
638 res
.nbytes
= 2 * BN_num_bytes(p
);
639 memset(result
->d
, 0, res
.nbytes
);
640 res
.value
= (unsigned char *)result
->d
;
641 /* Perform the operation */
642 if((sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_MODEXP_CRT
, &arg
, 1,
645 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
646 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_REQUEST_FAILED
);
647 sprintf(tmpbuf
, "%ld", sw_status
);
648 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
651 /* Convert the response */
652 BN_bin2bn((unsigned char *)result
->d
, res
.nbytes
, r
);
656 release_context(hac
);
661 #ifndef OPENSSL_NO_RSA
662 static int cswift_rsa_mod_exp(BIGNUM
*r0
, const BIGNUM
*I
, RSA
*rsa
)
667 if((ctx
= BN_CTX_new()) == NULL
)
669 if(!rsa
->p
|| !rsa
->q
|| !rsa
->dmp1
|| !rsa
->dmq1
|| !rsa
->iqmp
)
671 CSWIFTerr(CSWIFT_F_CSWIFT_RSA_MOD_EXP
,CSWIFT_R_MISSING_KEY_COMPONENTS
);
674 to_return
= cswift_mod_exp_crt(r0
, I
, rsa
->p
, rsa
->q
, rsa
->dmp1
,
675 rsa
->dmq1
, rsa
->iqmp
, ctx
);
683 /* This function is aliased to mod_exp (with the mont stuff dropped). */
684 static int cswift_mod_exp_mont(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
685 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
)
687 return cswift_mod_exp(r
, a
, p
, m
, ctx
);
690 #ifndef OPENSSL_NO_DSA
691 static DSA_SIG
*cswift_dsa_sign(const unsigned char *dgst
, int dlen
, DSA
*dsa
)
693 SW_CONTEXT_HANDLE hac
;
696 SW_LARGENUMBER arg
, res
;
699 BIGNUM
*dsa_p
= NULL
;
700 BIGNUM
*dsa_q
= NULL
;
701 BIGNUM
*dsa_g
= NULL
;
702 BIGNUM
*dsa_key
= NULL
;
703 BIGNUM
*result
= NULL
;
704 DSA_SIG
*to_return
= NULL
;
707 if((ctx
= BN_CTX_new()) == NULL
)
709 if(!get_context(&hac
))
711 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_UNIT_FAILURE
);
715 /* Prepare the params */
717 dsa_p
= BN_CTX_get(ctx
);
718 dsa_q
= BN_CTX_get(ctx
);
719 dsa_g
= BN_CTX_get(ctx
);
720 dsa_key
= BN_CTX_get(ctx
);
721 result
= BN_CTX_get(ctx
);
724 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_BN_CTX_FULL
);
727 if(!bn_wexpand(dsa_p
, dsa
->p
->top
) ||
728 !bn_wexpand(dsa_q
, dsa
->q
->top
) ||
729 !bn_wexpand(dsa_g
, dsa
->g
->top
) ||
730 !bn_wexpand(dsa_key
, dsa
->priv_key
->top
) ||
731 !bn_wexpand(result
, dsa
->p
->top
))
733 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_BN_EXPAND_FAIL
);
736 sw_param
.type
= SW_ALG_DSA
;
737 sw_param
.up
.dsa
.p
.nbytes
= BN_bn2bin(dsa
->p
,
738 (unsigned char *)dsa_p
->d
);
739 sw_param
.up
.dsa
.p
.value
= (unsigned char *)dsa_p
->d
;
740 sw_param
.up
.dsa
.q
.nbytes
= BN_bn2bin(dsa
->q
,
741 (unsigned char *)dsa_q
->d
);
742 sw_param
.up
.dsa
.q
.value
= (unsigned char *)dsa_q
->d
;
743 sw_param
.up
.dsa
.g
.nbytes
= BN_bn2bin(dsa
->g
,
744 (unsigned char *)dsa_g
->d
);
745 sw_param
.up
.dsa
.g
.value
= (unsigned char *)dsa_g
->d
;
746 sw_param
.up
.dsa
.key
.nbytes
= BN_bn2bin(dsa
->priv_key
,
747 (unsigned char *)dsa_key
->d
);
748 sw_param
.up
.dsa
.key
.value
= (unsigned char *)dsa_key
->d
;
749 /* Attach the key params */
750 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
755 case SW_ERR_INPUT_SIZE
:
756 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_BAD_KEY_SIZE
);
760 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
761 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_REQUEST_FAILED
);
762 sprintf(tmpbuf
, "%ld", sw_status
);
763 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
767 /* Prepare the argument and response */
769 arg
.value
= (unsigned char *)dgst
;
770 res
.nbytes
= BN_num_bytes(dsa
->p
);
771 memset(result
->d
, 0, res
.nbytes
);
772 res
.value
= (unsigned char *)result
->d
;
773 /* Perform the operation */
774 sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_DSS_SIGN
, &arg
, 1,
776 if(sw_status
!= SW_OK
)
778 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
779 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_REQUEST_FAILED
);
780 sprintf(tmpbuf
, "%ld", sw_status
);
781 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
784 /* Convert the response */
785 ptr
= (unsigned char *)result
->d
;
786 if((to_return
= DSA_SIG_new()) == NULL
)
788 to_return
->r
= BN_bin2bn((unsigned char *)result
->d
, 20, NULL
);
789 to_return
->s
= BN_bin2bn((unsigned char *)result
->d
+ 20, 20, NULL
);
793 release_context(hac
);
802 static int cswift_dsa_verify(const unsigned char *dgst
, int dgst_len
,
803 DSA_SIG
*sig
, DSA
*dsa
)
805 SW_CONTEXT_HANDLE hac
;
808 SW_LARGENUMBER arg
[2], res
;
809 unsigned long sig_result
;
811 BIGNUM
*dsa_p
= NULL
;
812 BIGNUM
*dsa_q
= NULL
;
813 BIGNUM
*dsa_g
= NULL
;
814 BIGNUM
*dsa_key
= NULL
;
815 BIGNUM
*argument
= NULL
;
819 if((ctx
= BN_CTX_new()) == NULL
)
821 if(!get_context(&hac
))
823 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_UNIT_FAILURE
);
827 /* Prepare the params */
829 dsa_p
= BN_CTX_get(ctx
);
830 dsa_q
= BN_CTX_get(ctx
);
831 dsa_g
= BN_CTX_get(ctx
);
832 dsa_key
= BN_CTX_get(ctx
);
833 argument
= BN_CTX_get(ctx
);
836 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_BN_CTX_FULL
);
839 if(!bn_wexpand(dsa_p
, dsa
->p
->top
) ||
840 !bn_wexpand(dsa_q
, dsa
->q
->top
) ||
841 !bn_wexpand(dsa_g
, dsa
->g
->top
) ||
842 !bn_wexpand(dsa_key
, dsa
->pub_key
->top
) ||
843 !bn_wexpand(argument
, 40))
845 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_BN_EXPAND_FAIL
);
848 sw_param
.type
= SW_ALG_DSA
;
849 sw_param
.up
.dsa
.p
.nbytes
= BN_bn2bin(dsa
->p
,
850 (unsigned char *)dsa_p
->d
);
851 sw_param
.up
.dsa
.p
.value
= (unsigned char *)dsa_p
->d
;
852 sw_param
.up
.dsa
.q
.nbytes
= BN_bn2bin(dsa
->q
,
853 (unsigned char *)dsa_q
->d
);
854 sw_param
.up
.dsa
.q
.value
= (unsigned char *)dsa_q
->d
;
855 sw_param
.up
.dsa
.g
.nbytes
= BN_bn2bin(dsa
->g
,
856 (unsigned char *)dsa_g
->d
);
857 sw_param
.up
.dsa
.g
.value
= (unsigned char *)dsa_g
->d
;
858 sw_param
.up
.dsa
.key
.nbytes
= BN_bn2bin(dsa
->pub_key
,
859 (unsigned char *)dsa_key
->d
);
860 sw_param
.up
.dsa
.key
.value
= (unsigned char *)dsa_key
->d
;
861 /* Attach the key params */
862 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
867 case SW_ERR_INPUT_SIZE
:
868 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_BAD_KEY_SIZE
);
872 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
873 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_REQUEST_FAILED
);
874 sprintf(tmpbuf
, "%ld", sw_status
);
875 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
879 /* Prepare the argument and response */
880 arg
[0].nbytes
= dgst_len
;
881 arg
[0].value
= (unsigned char *)dgst
;
883 arg
[1].value
= (unsigned char *)argument
->d
;
884 memset(arg
[1].value
, 0, 40);
885 BN_bn2bin(sig
->r
, arg
[1].value
+ 20 - BN_num_bytes(sig
->r
));
886 BN_bn2bin(sig
->s
, arg
[1].value
+ 40 - BN_num_bytes(sig
->s
));
887 res
.nbytes
= 4; /* unsigned long */
888 res
.value
= (unsigned char *)(&sig_result
);
889 /* Perform the operation */
890 sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_DSS_VERIFY
, arg
, 2,
892 if(sw_status
!= SW_OK
)
894 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
895 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_REQUEST_FAILED
);
896 sprintf(tmpbuf
, "%ld", sw_status
);
897 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
900 /* Convert the response */
901 to_return
= ((sig_result
== 0) ? 0 : 1);
905 release_context(hac
);
915 #ifndef OPENSSL_NO_DH
916 /* This function is aliased to mod_exp (with the dh and mont dropped). */
917 static int cswift_mod_exp_dh(const DH
*dh
, BIGNUM
*r
,
918 const BIGNUM
*a
, const BIGNUM
*p
,
919 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
)
921 return cswift_mod_exp(r
, a
, p
, m
, ctx
);
925 /* Random bytes are good */
926 static int cswift_rand_bytes(unsigned char *buf
, int num
)
928 SW_CONTEXT_HANDLE hac
;
930 SW_LARGENUMBER largenum
;
933 int to_return
= 0; /* assume failure */
935 if (!get_context(&hac
))
937 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
, CSWIFT_R_UNIT_FAILURE
);
942 while (nbytes
< (size_t)num
)
944 /* tell CryptoSwift how many bytes we want and where we want it.
945 * Note: - CryptoSwift cannot do more than 4096 bytes at a time.
946 * - CryptoSwift can only do multiple of 32-bits. */
947 largenum
.value
= (SW_BYTE
*) buf
+ nbytes
;
948 if (4096 > num
- nbytes
)
949 largenum
.nbytes
= num
- nbytes
;
951 largenum
.nbytes
= 4096;
953 swrc
= p_CSwift_SimpleRequest(hac
, SW_CMD_RAND
, NULL
, 0, &largenum
, 1);
957 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
, CSWIFT_R_REQUEST_FAILED
);
958 sprintf(tmpbuf
, "%ld", swrc
);
959 ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf
);
963 nbytes
+= largenum
.nbytes
;
965 to_return
= 1; /* success */
969 release_context(hac
);
973 static int cswift_rand_status(void)
979 /* This stuff is needed if this ENGINE is being compiled into a self-contained
981 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
982 static int bind_fn(ENGINE
*e
, const char *id
)
984 if(id
&& (strcmp(id
, engine_cswift_id
) != 0))
990 IMPLEMENT_DYNAMIC_CHECK_FN()
991 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn
)
992 #endif /* OPENSSL_NO_DYNAMIC_ENGINE */
994 #endif /* !OPENSSL_NO_HW_CSWIFT */
995 #endif /* !OPENSSL_NO_HW */