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).
61 #include <openssl/crypto.h>
62 #include <openssl/buffer.h>
63 #include <openssl/dso.h>
64 #include <openssl/engine.h>
65 #include <openssl/rsa.h>
66 #include <openssl/dsa.h>
67 #include <openssl/dh.h>
68 #include <openssl/rand.h>
71 #ifndef OPENSSL_NO_HW_CSWIFT
73 /* Attribution notice: Rainbow have generously allowed me to reproduce
74 * the necessary definitions here from their API. This means the support
75 * can build independently of whether application builders have the
76 * API or hardware. This will allow developers to easily produce software
77 * that has latent hardware support for any users that have accelerators
78 * installed, without the developers themselves needing anything extra.
80 * I have only clipped the parts from the CryptoSwift header files that
81 * are (or seem) relevant to the CryptoSwift support code. This is
82 * simply to keep the file sizes reasonable.
88 #include "vendor_defns/cswift.h"
91 #define CSWIFT_LIB_NAME "cswift engine"
92 #include "e_cswift_err.c"
94 #define DECIMAL_SIZE(type) ((sizeof(type)*8+2)/3+1)
96 static int cswift_destroy(ENGINE
*e
);
97 static int cswift_init(ENGINE
*e
);
98 static int cswift_finish(ENGINE
*e
);
99 static int cswift_ctrl(ENGINE
*e
, int cmd
, long i
, void *p
, void (*f
)(void));
102 static int cswift_mod_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
103 const BIGNUM
*m
, BN_CTX
*ctx
);
104 static int cswift_mod_exp_crt(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
105 const BIGNUM
*q
, const BIGNUM
*dmp1
, const BIGNUM
*dmq1
,
106 const BIGNUM
*iqmp
, BN_CTX
*ctx
);
108 #ifndef OPENSSL_NO_RSA
110 static int cswift_rsa_mod_exp(BIGNUM
*r0
, const BIGNUM
*I
, RSA
*rsa
, BN_CTX
*ctx
);
112 /* This function is aliased to mod_exp (with the mont stuff dropped). */
113 static int cswift_mod_exp_mont(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
114 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
);
116 #ifndef OPENSSL_NO_DSA
118 static DSA_SIG
*cswift_dsa_sign(const unsigned char *dgst
, int dlen
, DSA
*dsa
);
119 static int cswift_dsa_verify(const unsigned char *dgst
, int dgst_len
,
120 DSA_SIG
*sig
, DSA
*dsa
);
123 #ifndef OPENSSL_NO_DH
125 /* This function is alised to mod_exp (with the DH and mont dropped). */
126 static int cswift_mod_exp_dh(const DH
*dh
, BIGNUM
*r
,
127 const BIGNUM
*a
, const BIGNUM
*p
,
128 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
);
132 static int cswift_rand_bytes(unsigned char *buf
, int num
);
133 static int cswift_rand_status(void);
135 /* The definitions for control commands specific to this engine */
136 #define CSWIFT_CMD_SO_PATH ENGINE_CMD_BASE
137 static const ENGINE_CMD_DEFN cswift_cmd_defns
[] = {
140 "Specifies the path to the 'cswift' shared library",
141 ENGINE_CMD_FLAG_STRING
},
145 #ifndef OPENSSL_NO_RSA
146 /* Our internal RSA_METHOD that we provide pointers to */
147 static RSA_METHOD cswift_rsa
=
149 "CryptoSwift RSA method",
166 #ifndef OPENSSL_NO_DSA
167 /* Our internal DSA_METHOD that we provide pointers to */
168 static DSA_METHOD cswift_dsa
=
170 "CryptoSwift DSA method",
172 NULL
, /* dsa_sign_setup */
174 NULL
, /* dsa_mod_exp */
175 NULL
, /* bn_mod_exp */
180 NULL
, /* dsa_paramgen */
181 NULL
/* dsa_keygen */
185 #ifndef OPENSSL_NO_DH
186 /* Our internal DH_METHOD that we provide pointers to */
187 static DH_METHOD cswift_dh
=
189 "CryptoSwift DH method",
201 static RAND_METHOD cswift_random
=
203 /* "CryptoSwift RAND method", */
213 /* Constants used when creating the ENGINE */
214 static const char *engine_cswift_id
= "cswift";
215 static const char *engine_cswift_name
= "CryptoSwift hardware engine support";
217 /* This internal function is used by ENGINE_cswift() and possibly by the
218 * "dynamic" ENGINE support too */
219 static int bind_helper(ENGINE
*e
)
221 #ifndef OPENSSL_NO_RSA
222 const RSA_METHOD
*meth1
;
224 #ifndef OPENSSL_NO_DH
225 const DH_METHOD
*meth2
;
227 if(!ENGINE_set_id(e
, engine_cswift_id
) ||
228 !ENGINE_set_name(e
, engine_cswift_name
) ||
229 #ifndef OPENSSL_NO_RSA
230 !ENGINE_set_RSA(e
, &cswift_rsa
) ||
232 #ifndef OPENSSL_NO_DSA
233 !ENGINE_set_DSA(e
, &cswift_dsa
) ||
235 #ifndef OPENSSL_NO_DH
236 !ENGINE_set_DH(e
, &cswift_dh
) ||
238 !ENGINE_set_RAND(e
, &cswift_random
) ||
239 !ENGINE_set_destroy_function(e
, cswift_destroy
) ||
240 !ENGINE_set_init_function(e
, cswift_init
) ||
241 !ENGINE_set_finish_function(e
, cswift_finish
) ||
242 !ENGINE_set_ctrl_function(e
, cswift_ctrl
) ||
243 !ENGINE_set_cmd_defns(e
, cswift_cmd_defns
))
246 #ifndef OPENSSL_NO_RSA
247 /* We know that the "PKCS1_SSLeay()" functions hook properly
248 * to the cswift-specific mod_exp and mod_exp_crt so we use
249 * those functions. NB: We don't use ENGINE_openssl() or
250 * anything "more generic" because something like the RSAref
251 * code may not hook properly, and if you own one of these
252 * cards then you have the right to do RSA operations on it
254 meth1
= RSA_PKCS1_SSLeay();
255 cswift_rsa
.rsa_pub_enc
= meth1
->rsa_pub_enc
;
256 cswift_rsa
.rsa_pub_dec
= meth1
->rsa_pub_dec
;
257 cswift_rsa
.rsa_priv_enc
= meth1
->rsa_priv_enc
;
258 cswift_rsa
.rsa_priv_dec
= meth1
->rsa_priv_dec
;
261 #ifndef OPENSSL_NO_DH
262 /* Much the same for Diffie-Hellman */
263 meth2
= DH_OpenSSL();
264 cswift_dh
.generate_key
= meth2
->generate_key
;
265 cswift_dh
.compute_key
= meth2
->compute_key
;
268 /* Ensure the cswift error handling is set up */
269 ERR_load_CSWIFT_strings();
273 #ifdef OPENSSL_NO_DYNAMIC_ENGINE
274 static ENGINE
*engine_cswift(void)
276 ENGINE
*ret
= ENGINE_new();
279 if(!bind_helper(ret
))
287 void ENGINE_load_cswift(void)
289 /* Copied from eng_[openssl|dyn].c */
290 ENGINE
*toadd
= engine_cswift();
298 /* This is a process-global DSO handle used for loading and unloading
299 * the CryptoSwift library. NB: This is only set (or unset) during an
300 * init() or finish() call (reference counts permitting) and they're
301 * operating with global locks, so this should be thread-safe
303 static DSO
*cswift_dso
= NULL
;
305 /* These are the function pointers that are (un)set when the library has
306 * successfully (un)loaded. */
307 t_swAcquireAccContext
*p_CSwift_AcquireAccContext
= NULL
;
308 t_swAttachKeyParam
*p_CSwift_AttachKeyParam
= NULL
;
309 t_swSimpleRequest
*p_CSwift_SimpleRequest
= NULL
;
310 t_swReleaseAccContext
*p_CSwift_ReleaseAccContext
= NULL
;
312 /* Used in the DSO operations. */
313 static const char *CSWIFT_LIBNAME
= NULL
;
314 static const char *get_CSWIFT_LIBNAME(void)
317 return CSWIFT_LIBNAME
;
320 static void free_CSWIFT_LIBNAME(void)
323 OPENSSL_free((void*)CSWIFT_LIBNAME
);
324 CSWIFT_LIBNAME
= NULL
;
326 static long set_CSWIFT_LIBNAME(const char *name
)
328 free_CSWIFT_LIBNAME();
329 return (((CSWIFT_LIBNAME
= BUF_strdup(name
)) != NULL
) ? 1 : 0);
331 static const char *CSWIFT_F1
= "swAcquireAccContext";
332 static const char *CSWIFT_F2
= "swAttachKeyParam";
333 static const char *CSWIFT_F3
= "swSimpleRequest";
334 static const char *CSWIFT_F4
= "swReleaseAccContext";
337 /* CryptoSwift library functions and mechanics - these are used by the
338 * higher-level functions further down. NB: As and where there's no
339 * error checking, take a look lower down where these functions are
340 * called, the checking and error handling is probably down there. */
342 /* utility function to obtain a context */
343 static int get_context(SW_CONTEXT_HANDLE
*hac
)
347 status
= p_CSwift_AcquireAccContext(hac
);
353 /* similarly to release one. */
354 static void release_context(SW_CONTEXT_HANDLE hac
)
356 p_CSwift_ReleaseAccContext(hac
);
359 /* Destructor (complements the "ENGINE_cswift()" constructor) */
360 static int cswift_destroy(ENGINE
*e
)
362 free_CSWIFT_LIBNAME();
363 ERR_unload_CSWIFT_strings();
367 /* (de)initialisation functions. */
368 static int cswift_init(ENGINE
*e
)
370 SW_CONTEXT_HANDLE hac
;
371 t_swAcquireAccContext
*p1
;
372 t_swAttachKeyParam
*p2
;
373 t_swSimpleRequest
*p3
;
374 t_swReleaseAccContext
*p4
;
376 if(cswift_dso
!= NULL
)
378 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_ALREADY_LOADED
);
381 /* Attempt to load libswift.so/swift.dll/whatever. */
382 cswift_dso
= DSO_load(NULL
, get_CSWIFT_LIBNAME(), NULL
, 0);
383 if(cswift_dso
== NULL
)
385 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_NOT_LOADED
);
388 if(!(p1
= (t_swAcquireAccContext
*)
389 DSO_bind_func(cswift_dso
, CSWIFT_F1
)) ||
390 !(p2
= (t_swAttachKeyParam
*)
391 DSO_bind_func(cswift_dso
, CSWIFT_F2
)) ||
392 !(p3
= (t_swSimpleRequest
*)
393 DSO_bind_func(cswift_dso
, CSWIFT_F3
)) ||
394 !(p4
= (t_swReleaseAccContext
*)
395 DSO_bind_func(cswift_dso
, CSWIFT_F4
)))
397 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_NOT_LOADED
);
400 /* Copy the pointers */
401 p_CSwift_AcquireAccContext
= p1
;
402 p_CSwift_AttachKeyParam
= p2
;
403 p_CSwift_SimpleRequest
= p3
;
404 p_CSwift_ReleaseAccContext
= p4
;
405 /* Try and get a context - if not, we may have a DSO but no
407 if(!get_context(&hac
))
409 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_UNIT_FAILURE
);
412 release_context(hac
);
413 /* Everything's fine. */
417 DSO_free(cswift_dso
);
418 p_CSwift_AcquireAccContext
= NULL
;
419 p_CSwift_AttachKeyParam
= NULL
;
420 p_CSwift_SimpleRequest
= NULL
;
421 p_CSwift_ReleaseAccContext
= NULL
;
425 static int cswift_finish(ENGINE
*e
)
427 free_CSWIFT_LIBNAME();
428 if(cswift_dso
== NULL
)
430 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH
,CSWIFT_R_NOT_LOADED
);
433 if(!DSO_free(cswift_dso
))
435 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH
,CSWIFT_R_UNIT_FAILURE
);
439 p_CSwift_AcquireAccContext
= NULL
;
440 p_CSwift_AttachKeyParam
= NULL
;
441 p_CSwift_SimpleRequest
= NULL
;
442 p_CSwift_ReleaseAccContext
= NULL
;
446 static int cswift_ctrl(ENGINE
*e
, int cmd
, long i
, void *p
, void (*f
)(void))
448 int initialised
= ((cswift_dso
== NULL
) ? 0 : 1);
451 case CSWIFT_CMD_SO_PATH
:
454 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
,ERR_R_PASSED_NULL_PARAMETER
);
459 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
,CSWIFT_R_ALREADY_LOADED
);
462 return set_CSWIFT_LIBNAME((const char *)p
);
466 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
,CSWIFT_R_CTRL_COMMAND_NOT_IMPLEMENTED
);
470 /* Un petit mod_exp */
471 static int cswift_mod_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
472 const BIGNUM
*m
, BN_CTX
*ctx
)
474 /* I need somewhere to store temporary serialised values for
475 * use with the CryptoSwift API calls. A neat cheat - I'll use
476 * BIGNUMs from the BN_CTX but access their arrays directly as
477 * byte arrays <grin>. This way I don't have to clean anything
484 SW_LARGENUMBER arg
, res
;
486 SW_CONTEXT_HANDLE hac
;
487 int to_return
, acquired
;
489 modulus
= exponent
= argument
= result
= NULL
;
490 to_return
= 0; /* expect failure */
493 if(!get_context(&hac
))
495 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_UNIT_FAILURE
);
499 /* Prepare the params */
501 modulus
= BN_CTX_get(ctx
);
502 exponent
= BN_CTX_get(ctx
);
503 argument
= BN_CTX_get(ctx
);
504 result
= BN_CTX_get(ctx
);
507 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_BN_CTX_FULL
);
510 if(!bn_wexpand(modulus
, m
->top
) || !bn_wexpand(exponent
, p
->top
) ||
511 !bn_wexpand(argument
, a
->top
) || !bn_wexpand(result
, m
->top
))
513 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_BN_EXPAND_FAIL
);
516 sw_param
.type
= SW_ALG_EXP
;
517 sw_param
.up
.exp
.modulus
.nbytes
= BN_bn2bin(m
,
518 (unsigned char *)modulus
->d
);
519 sw_param
.up
.exp
.modulus
.value
= (unsigned char *)modulus
->d
;
520 sw_param
.up
.exp
.exponent
.nbytes
= BN_bn2bin(p
,
521 (unsigned char *)exponent
->d
);
522 sw_param
.up
.exp
.exponent
.value
= (unsigned char *)exponent
->d
;
523 /* Attach the key params */
524 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
529 case SW_ERR_INPUT_SIZE
:
530 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_BAD_KEY_SIZE
);
534 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
535 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_REQUEST_FAILED
);
536 sprintf(tmpbuf
, "%ld", sw_status
);
537 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
541 /* Prepare the argument and response */
542 arg
.nbytes
= BN_bn2bin(a
, (unsigned char *)argument
->d
);
543 arg
.value
= (unsigned char *)argument
->d
;
544 res
.nbytes
= BN_num_bytes(m
);
545 memset(result
->d
, 0, res
.nbytes
);
546 res
.value
= (unsigned char *)result
->d
;
547 /* Perform the operation */
548 if((sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_MODEXP
, &arg
, 1,
551 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
552 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_REQUEST_FAILED
);
553 sprintf(tmpbuf
, "%ld", sw_status
);
554 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
557 /* Convert the response */
558 BN_bin2bn((unsigned char *)result
->d
, res
.nbytes
, r
);
562 release_context(hac
);
567 /* Un petit mod_exp chinois */
568 static int cswift_mod_exp_crt(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
569 const BIGNUM
*q
, const BIGNUM
*dmp1
,
570 const BIGNUM
*dmq1
, const BIGNUM
*iqmp
, BN_CTX
*ctx
)
573 SW_LARGENUMBER arg
, res
;
575 SW_CONTEXT_HANDLE hac
;
576 BIGNUM
*rsa_p
= NULL
;
577 BIGNUM
*rsa_q
= NULL
;
578 BIGNUM
*rsa_dmp1
= NULL
;
579 BIGNUM
*rsa_dmq1
= NULL
;
580 BIGNUM
*rsa_iqmp
= NULL
;
581 BIGNUM
*argument
= NULL
;
582 BIGNUM
*result
= NULL
;
583 int to_return
= 0; /* expect failure */
586 if(!get_context(&hac
))
588 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_UNIT_FAILURE
);
592 /* Prepare the params */
594 rsa_p
= BN_CTX_get(ctx
);
595 rsa_q
= BN_CTX_get(ctx
);
596 rsa_dmp1
= BN_CTX_get(ctx
);
597 rsa_dmq1
= BN_CTX_get(ctx
);
598 rsa_iqmp
= BN_CTX_get(ctx
);
599 argument
= BN_CTX_get(ctx
);
600 result
= BN_CTX_get(ctx
);
603 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_BN_CTX_FULL
);
606 if(!bn_wexpand(rsa_p
, p
->top
) || !bn_wexpand(rsa_q
, q
->top
) ||
607 !bn_wexpand(rsa_dmp1
, dmp1
->top
) ||
608 !bn_wexpand(rsa_dmq1
, dmq1
->top
) ||
609 !bn_wexpand(rsa_iqmp
, iqmp
->top
) ||
610 !bn_wexpand(argument
, a
->top
) ||
611 !bn_wexpand(result
, p
->top
+ q
->top
))
613 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_BN_EXPAND_FAIL
);
616 sw_param
.type
= SW_ALG_CRT
;
617 sw_param
.up
.crt
.p
.nbytes
= BN_bn2bin(p
, (unsigned char *)rsa_p
->d
);
618 sw_param
.up
.crt
.p
.value
= (unsigned char *)rsa_p
->d
;
619 sw_param
.up
.crt
.q
.nbytes
= BN_bn2bin(q
, (unsigned char *)rsa_q
->d
);
620 sw_param
.up
.crt
.q
.value
= (unsigned char *)rsa_q
->d
;
621 sw_param
.up
.crt
.dmp1
.nbytes
= BN_bn2bin(dmp1
,
622 (unsigned char *)rsa_dmp1
->d
);
623 sw_param
.up
.crt
.dmp1
.value
= (unsigned char *)rsa_dmp1
->d
;
624 sw_param
.up
.crt
.dmq1
.nbytes
= BN_bn2bin(dmq1
,
625 (unsigned char *)rsa_dmq1
->d
);
626 sw_param
.up
.crt
.dmq1
.value
= (unsigned char *)rsa_dmq1
->d
;
627 sw_param
.up
.crt
.iqmp
.nbytes
= BN_bn2bin(iqmp
,
628 (unsigned char *)rsa_iqmp
->d
);
629 sw_param
.up
.crt
.iqmp
.value
= (unsigned char *)rsa_iqmp
->d
;
630 /* Attach the key params */
631 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
636 case SW_ERR_INPUT_SIZE
:
637 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_BAD_KEY_SIZE
);
641 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
642 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_REQUEST_FAILED
);
643 sprintf(tmpbuf
, "%ld", sw_status
);
644 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
648 /* Prepare the argument and response */
649 arg
.nbytes
= BN_bn2bin(a
, (unsigned char *)argument
->d
);
650 arg
.value
= (unsigned char *)argument
->d
;
651 res
.nbytes
= 2 * BN_num_bytes(p
);
652 memset(result
->d
, 0, res
.nbytes
);
653 res
.value
= (unsigned char *)result
->d
;
654 /* Perform the operation */
655 if((sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_MODEXP_CRT
, &arg
, 1,
658 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
659 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_REQUEST_FAILED
);
660 sprintf(tmpbuf
, "%ld", sw_status
);
661 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
664 /* Convert the response */
665 BN_bin2bn((unsigned char *)result
->d
, res
.nbytes
, r
);
669 release_context(hac
);
674 #ifndef OPENSSL_NO_RSA
675 static int cswift_rsa_mod_exp(BIGNUM
*r0
, const BIGNUM
*I
, RSA
*rsa
, BN_CTX
*ctx
)
679 if(!rsa
->p
|| !rsa
->q
|| !rsa
->dmp1
|| !rsa
->dmq1
|| !rsa
->iqmp
)
681 CSWIFTerr(CSWIFT_F_CSWIFT_RSA_MOD_EXP
,CSWIFT_R_MISSING_KEY_COMPONENTS
);
684 to_return
= cswift_mod_exp_crt(r0
, I
, rsa
->p
, rsa
->q
, rsa
->dmp1
,
685 rsa
->dmq1
, rsa
->iqmp
, ctx
);
691 /* This function is aliased to mod_exp (with the mont stuff dropped). */
692 static int cswift_mod_exp_mont(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
693 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
)
695 return cswift_mod_exp(r
, a
, p
, m
, ctx
);
698 #ifndef OPENSSL_NO_DSA
699 static DSA_SIG
*cswift_dsa_sign(const unsigned char *dgst
, int dlen
, DSA
*dsa
)
701 SW_CONTEXT_HANDLE hac
;
704 SW_LARGENUMBER arg
, res
;
707 BIGNUM
*dsa_p
= NULL
;
708 BIGNUM
*dsa_q
= NULL
;
709 BIGNUM
*dsa_g
= NULL
;
710 BIGNUM
*dsa_key
= NULL
;
711 BIGNUM
*result
= NULL
;
712 DSA_SIG
*to_return
= NULL
;
715 if((ctx
= BN_CTX_new()) == NULL
)
717 if(!get_context(&hac
))
719 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_UNIT_FAILURE
);
723 /* Prepare the params */
725 dsa_p
= BN_CTX_get(ctx
);
726 dsa_q
= BN_CTX_get(ctx
);
727 dsa_g
= BN_CTX_get(ctx
);
728 dsa_key
= BN_CTX_get(ctx
);
729 result
= BN_CTX_get(ctx
);
732 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_BN_CTX_FULL
);
735 if(!bn_wexpand(dsa_p
, dsa
->p
->top
) ||
736 !bn_wexpand(dsa_q
, dsa
->q
->top
) ||
737 !bn_wexpand(dsa_g
, dsa
->g
->top
) ||
738 !bn_wexpand(dsa_key
, dsa
->priv_key
->top
) ||
739 !bn_wexpand(result
, dsa
->p
->top
))
741 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_BN_EXPAND_FAIL
);
744 sw_param
.type
= SW_ALG_DSA
;
745 sw_param
.up
.dsa
.p
.nbytes
= BN_bn2bin(dsa
->p
,
746 (unsigned char *)dsa_p
->d
);
747 sw_param
.up
.dsa
.p
.value
= (unsigned char *)dsa_p
->d
;
748 sw_param
.up
.dsa
.q
.nbytes
= BN_bn2bin(dsa
->q
,
749 (unsigned char *)dsa_q
->d
);
750 sw_param
.up
.dsa
.q
.value
= (unsigned char *)dsa_q
->d
;
751 sw_param
.up
.dsa
.g
.nbytes
= BN_bn2bin(dsa
->g
,
752 (unsigned char *)dsa_g
->d
);
753 sw_param
.up
.dsa
.g
.value
= (unsigned char *)dsa_g
->d
;
754 sw_param
.up
.dsa
.key
.nbytes
= BN_bn2bin(dsa
->priv_key
,
755 (unsigned char *)dsa_key
->d
);
756 sw_param
.up
.dsa
.key
.value
= (unsigned char *)dsa_key
->d
;
757 /* Attach the key params */
758 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
763 case SW_ERR_INPUT_SIZE
:
764 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_BAD_KEY_SIZE
);
768 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
769 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_REQUEST_FAILED
);
770 sprintf(tmpbuf
, "%ld", sw_status
);
771 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
775 /* Prepare the argument and response */
777 arg
.value
= (unsigned char *)dgst
;
778 res
.nbytes
= BN_num_bytes(dsa
->p
);
779 memset(result
->d
, 0, res
.nbytes
);
780 res
.value
= (unsigned char *)result
->d
;
781 /* Perform the operation */
782 sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_DSS_SIGN
, &arg
, 1,
784 if(sw_status
!= SW_OK
)
786 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
787 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_REQUEST_FAILED
);
788 sprintf(tmpbuf
, "%ld", sw_status
);
789 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
792 /* Convert the response */
793 ptr
= (unsigned char *)result
->d
;
794 if((to_return
= DSA_SIG_new()) == NULL
)
796 to_return
->r
= BN_bin2bn((unsigned char *)result
->d
, 20, NULL
);
797 to_return
->s
= BN_bin2bn((unsigned char *)result
->d
+ 20, 20, NULL
);
801 release_context(hac
);
810 static int cswift_dsa_verify(const unsigned char *dgst
, int dgst_len
,
811 DSA_SIG
*sig
, DSA
*dsa
)
813 SW_CONTEXT_HANDLE hac
;
816 SW_LARGENUMBER arg
[2], res
;
817 unsigned long sig_result
;
819 BIGNUM
*dsa_p
= NULL
;
820 BIGNUM
*dsa_q
= NULL
;
821 BIGNUM
*dsa_g
= NULL
;
822 BIGNUM
*dsa_key
= NULL
;
823 BIGNUM
*argument
= NULL
;
827 if((ctx
= BN_CTX_new()) == NULL
)
829 if(!get_context(&hac
))
831 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_UNIT_FAILURE
);
835 /* Prepare the params */
837 dsa_p
= BN_CTX_get(ctx
);
838 dsa_q
= BN_CTX_get(ctx
);
839 dsa_g
= BN_CTX_get(ctx
);
840 dsa_key
= BN_CTX_get(ctx
);
841 argument
= BN_CTX_get(ctx
);
844 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_BN_CTX_FULL
);
847 if(!bn_wexpand(dsa_p
, dsa
->p
->top
) ||
848 !bn_wexpand(dsa_q
, dsa
->q
->top
) ||
849 !bn_wexpand(dsa_g
, dsa
->g
->top
) ||
850 !bn_wexpand(dsa_key
, dsa
->pub_key
->top
) ||
851 !bn_wexpand(argument
, 40))
853 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_BN_EXPAND_FAIL
);
856 sw_param
.type
= SW_ALG_DSA
;
857 sw_param
.up
.dsa
.p
.nbytes
= BN_bn2bin(dsa
->p
,
858 (unsigned char *)dsa_p
->d
);
859 sw_param
.up
.dsa
.p
.value
= (unsigned char *)dsa_p
->d
;
860 sw_param
.up
.dsa
.q
.nbytes
= BN_bn2bin(dsa
->q
,
861 (unsigned char *)dsa_q
->d
);
862 sw_param
.up
.dsa
.q
.value
= (unsigned char *)dsa_q
->d
;
863 sw_param
.up
.dsa
.g
.nbytes
= BN_bn2bin(dsa
->g
,
864 (unsigned char *)dsa_g
->d
);
865 sw_param
.up
.dsa
.g
.value
= (unsigned char *)dsa_g
->d
;
866 sw_param
.up
.dsa
.key
.nbytes
= BN_bn2bin(dsa
->pub_key
,
867 (unsigned char *)dsa_key
->d
);
868 sw_param
.up
.dsa
.key
.value
= (unsigned char *)dsa_key
->d
;
869 /* Attach the key params */
870 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
875 case SW_ERR_INPUT_SIZE
:
876 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_BAD_KEY_SIZE
);
880 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
881 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_REQUEST_FAILED
);
882 sprintf(tmpbuf
, "%ld", sw_status
);
883 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
887 /* Prepare the argument and response */
888 arg
[0].nbytes
= dgst_len
;
889 arg
[0].value
= (unsigned char *)dgst
;
891 arg
[1].value
= (unsigned char *)argument
->d
;
892 memset(arg
[1].value
, 0, 40);
893 BN_bn2bin(sig
->r
, arg
[1].value
+ 20 - BN_num_bytes(sig
->r
));
894 BN_bn2bin(sig
->s
, arg
[1].value
+ 40 - BN_num_bytes(sig
->s
));
895 res
.nbytes
= 4; /* unsigned long */
896 res
.value
= (unsigned char *)(&sig_result
);
897 /* Perform the operation */
898 sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_DSS_VERIFY
, arg
, 2,
900 if(sw_status
!= SW_OK
)
902 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
903 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_REQUEST_FAILED
);
904 sprintf(tmpbuf
, "%ld", sw_status
);
905 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
908 /* Convert the response */
909 to_return
= ((sig_result
== 0) ? 0 : 1);
913 release_context(hac
);
923 #ifndef OPENSSL_NO_DH
924 /* This function is aliased to mod_exp (with the dh and mont dropped). */
925 static int cswift_mod_exp_dh(const DH
*dh
, BIGNUM
*r
,
926 const BIGNUM
*a
, const BIGNUM
*p
,
927 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
)
929 return cswift_mod_exp(r
, a
, p
, m
, ctx
);
933 /* Random bytes are good */
934 static int cswift_rand_bytes(unsigned char *buf
, int num
)
936 SW_CONTEXT_HANDLE hac
;
938 SW_LARGENUMBER largenum
;
941 int to_return
= 0; /* assume failure */
943 if (!get_context(&hac
))
945 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
, CSWIFT_R_UNIT_FAILURE
);
950 while (nbytes
< (size_t)num
)
952 /* tell CryptoSwift how many bytes we want and where we want it.
953 * Note: - CryptoSwift cannot do more than 4096 bytes at a time.
954 * - CryptoSwift can only do multiple of 32-bits. */
955 largenum
.value
= (SW_BYTE
*) buf
+ nbytes
;
956 if (4096 > num
- nbytes
)
957 largenum
.nbytes
= num
- nbytes
;
959 largenum
.nbytes
= 4096;
961 swrc
= p_CSwift_SimpleRequest(hac
, SW_CMD_RAND
, NULL
, 0, &largenum
, 1);
965 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
, CSWIFT_R_REQUEST_FAILED
);
966 sprintf(tmpbuf
, "%ld", swrc
);
967 ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf
);
971 nbytes
+= largenum
.nbytes
;
973 to_return
= 1; /* success */
977 release_context(hac
);
981 static int cswift_rand_status(void)
987 /* This stuff is needed if this ENGINE is being compiled into a self-contained
989 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
990 static int bind_fn(ENGINE
*e
, const char *id
)
992 if(id
&& (strcmp(id
, engine_cswift_id
) != 0))
998 IMPLEMENT_DYNAMIC_CHECK_FN()
999 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn
)
1000 #endif /* OPENSSL_NO_DYNAMIC_ENGINE */
1002 #endif /* !OPENSSL_NO_HW_CSWIFT */
1003 #endif /* !OPENSSL_NO_HW */