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>
67 #ifndef OPENSSL_NO_HW_CSWIFT
69 /* Attribution notice: Rainbow have generously allowed me to reproduce
70 * the necessary definitions here from their API. This means the support
71 * can build independently of whether application builders have the
72 * API or hardware. This will allow developers to easily produce software
73 * that has latent hardware support for any users that have accelerators
74 * installed, without the developers themselves needing anything extra.
76 * I have only clipped the parts from the CryptoSwift header files that
77 * are (or seem) relevant to the CryptoSwift support code. This is
78 * simply to keep the file sizes reasonable.
84 #include "vendor_defns/cswift.h"
87 #define CSWIFT_LIB_NAME "cswift engine"
88 #include "e_cswift_err.c"
90 #define DECIMAL_SIZE(type) ((sizeof(type)*8+2)/3+1)
92 static int cswift_destroy(ENGINE
*e
);
93 static int cswift_init(ENGINE
*e
);
94 static int cswift_finish(ENGINE
*e
);
95 static int cswift_ctrl(ENGINE
*e
, int cmd
, long i
, void *p
, void (*f
)());
98 static int cswift_mod_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
99 const BIGNUM
*m
, BN_CTX
*ctx
);
100 static int cswift_mod_exp_crt(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
101 const BIGNUM
*q
, const BIGNUM
*dmp1
, const BIGNUM
*dmq1
,
102 const BIGNUM
*iqmp
, BN_CTX
*ctx
);
104 #ifndef OPENSSL_NO_RSA
106 static int cswift_rsa_mod_exp(BIGNUM
*r0
, const BIGNUM
*I
, RSA
*rsa
);
108 /* This function is aliased to mod_exp (with the mont stuff dropped). */
109 static int cswift_mod_exp_mont(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
110 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
);
112 #ifndef OPENSSL_NO_DSA
114 static DSA_SIG
*cswift_dsa_sign(const unsigned char *dgst
, int dlen
, DSA
*dsa
);
115 static int cswift_dsa_verify(const unsigned char *dgst
, int dgst_len
,
116 DSA_SIG
*sig
, DSA
*dsa
);
119 #ifndef OPENSSL_NO_DH
121 /* This function is alised to mod_exp (with the DH and mont dropped). */
122 static int cswift_mod_exp_dh(const DH
*dh
, BIGNUM
*r
,
123 const BIGNUM
*a
, const BIGNUM
*p
,
124 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
);
128 static int cswift_rand_bytes(unsigned char *buf
, int num
);
129 static int cswift_rand_status(void);
131 /* The definitions for control commands specific to this engine */
132 #define CSWIFT_CMD_SO_PATH ENGINE_CMD_BASE
133 static const ENGINE_CMD_DEFN cswift_cmd_defns
[] = {
136 "Specifies the path to the 'cswift' shared library",
137 ENGINE_CMD_FLAG_STRING
},
141 #ifndef OPENSSL_NO_RSA
142 /* Our internal RSA_METHOD that we provide pointers to */
143 static RSA_METHOD cswift_rsa
=
145 "CryptoSwift RSA method",
162 #ifndef OPENSSL_NO_DSA
163 /* Our internal DSA_METHOD that we provide pointers to */
164 static DSA_METHOD cswift_dsa
=
166 "CryptoSwift DSA method",
168 NULL
, /* dsa_sign_setup */
170 NULL
, /* dsa_mod_exp */
171 NULL
, /* bn_mod_exp */
176 NULL
, /* dsa_paramgen */
177 NULL
/* dsa_keygen */
181 #ifndef OPENSSL_NO_DH
182 /* Our internal DH_METHOD that we provide pointers to */
183 static DH_METHOD cswift_dh
=
185 "CryptoSwift DH method",
197 static RAND_METHOD cswift_random
=
199 /* "CryptoSwift RAND method", */
209 /* Constants used when creating the ENGINE */
210 static const char *engine_cswift_id
= "cswift";
211 static const char *engine_cswift_name
= "CryptoSwift hardware engine support";
213 /* This internal function is used by ENGINE_cswift() and possibly by the
214 * "dynamic" ENGINE support too */
215 static int bind_helper(ENGINE
*e
)
217 #ifndef OPENSSL_NO_RSA
218 const RSA_METHOD
*meth1
;
220 #ifndef OPENSSL_NO_DH
221 const DH_METHOD
*meth2
;
223 if(!ENGINE_set_id(e
, engine_cswift_id
) ||
224 !ENGINE_set_name(e
, engine_cswift_name
) ||
225 #ifndef OPENSSL_NO_RSA
226 !ENGINE_set_RSA(e
, &cswift_rsa
) ||
228 #ifndef OPENSSL_NO_DSA
229 !ENGINE_set_DSA(e
, &cswift_dsa
) ||
231 #ifndef OPENSSL_NO_DH
232 !ENGINE_set_DH(e
, &cswift_dh
) ||
234 !ENGINE_set_RAND(e
, &cswift_random
) ||
235 !ENGINE_set_destroy_function(e
, cswift_destroy
) ||
236 !ENGINE_set_init_function(e
, cswift_init
) ||
237 !ENGINE_set_finish_function(e
, cswift_finish
) ||
238 !ENGINE_set_ctrl_function(e
, cswift_ctrl
) ||
239 !ENGINE_set_cmd_defns(e
, cswift_cmd_defns
))
242 #ifndef OPENSSL_NO_RSA
243 /* We know that the "PKCS1_SSLeay()" functions hook properly
244 * to the cswift-specific mod_exp and mod_exp_crt so we use
245 * those functions. NB: We don't use ENGINE_openssl() or
246 * anything "more generic" because something like the RSAref
247 * code may not hook properly, and if you own one of these
248 * cards then you have the right to do RSA operations on it
250 meth1
= RSA_PKCS1_SSLeay();
251 cswift_rsa
.rsa_pub_enc
= meth1
->rsa_pub_enc
;
252 cswift_rsa
.rsa_pub_dec
= meth1
->rsa_pub_dec
;
253 cswift_rsa
.rsa_priv_enc
= meth1
->rsa_priv_enc
;
254 cswift_rsa
.rsa_priv_dec
= meth1
->rsa_priv_dec
;
257 #ifndef OPENSSL_NO_DH
258 /* Much the same for Diffie-Hellman */
259 meth2
= DH_OpenSSL();
260 cswift_dh
.generate_key
= meth2
->generate_key
;
261 cswift_dh
.compute_key
= meth2
->compute_key
;
264 /* Ensure the cswift error handling is set up */
265 ERR_load_CSWIFT_strings();
269 #ifdef OPENSSL_NO_DYNAMIC_ENGINE
270 static ENGINE
*engine_cswift(void)
272 ENGINE
*ret
= ENGINE_new();
275 if(!bind_helper(ret
))
283 void ENGINE_load_cswift(void)
285 /* Copied from eng_[openssl|dyn].c */
286 ENGINE
*toadd
= engine_cswift();
294 /* This is a process-global DSO handle used for loading and unloading
295 * the CryptoSwift library. NB: This is only set (or unset) during an
296 * init() or finish() call (reference counts permitting) and they're
297 * operating with global locks, so this should be thread-safe
299 static DSO
*cswift_dso
= NULL
;
301 /* These are the function pointers that are (un)set when the library has
302 * successfully (un)loaded. */
303 t_swAcquireAccContext
*p_CSwift_AcquireAccContext
= NULL
;
304 t_swAttachKeyParam
*p_CSwift_AttachKeyParam
= NULL
;
305 t_swSimpleRequest
*p_CSwift_SimpleRequest
= NULL
;
306 t_swReleaseAccContext
*p_CSwift_ReleaseAccContext
= NULL
;
308 /* Used in the DSO operations. */
309 static const char *CSWIFT_LIBNAME
= NULL
;
310 static const char *get_CSWIFT_LIBNAME(void)
313 return CSWIFT_LIBNAME
;
316 static void free_CSWIFT_LIBNAME(void)
319 OPENSSL_free((void*)CSWIFT_LIBNAME
);
320 CSWIFT_LIBNAME
= NULL
;
322 static long set_CSWIFT_LIBNAME(const char *name
)
324 free_CSWIFT_LIBNAME();
325 return (((CSWIFT_LIBNAME
= BUF_strdup(name
)) != NULL
) ? 1 : 0);
327 static const char *CSWIFT_F1
= "swAcquireAccContext";
328 static const char *CSWIFT_F2
= "swAttachKeyParam";
329 static const char *CSWIFT_F3
= "swSimpleRequest";
330 static const char *CSWIFT_F4
= "swReleaseAccContext";
333 /* CryptoSwift library functions and mechanics - these are used by the
334 * higher-level functions further down. NB: As and where there's no
335 * error checking, take a look lower down where these functions are
336 * called, the checking and error handling is probably down there. */
338 /* utility function to obtain a context */
339 static int get_context(SW_CONTEXT_HANDLE
*hac
)
343 status
= p_CSwift_AcquireAccContext(hac
);
349 /* similarly to release one. */
350 static void release_context(SW_CONTEXT_HANDLE hac
)
352 p_CSwift_ReleaseAccContext(hac
);
355 /* Destructor (complements the "ENGINE_cswift()" constructor) */
356 static int cswift_destroy(ENGINE
*e
)
358 free_CSWIFT_LIBNAME();
359 ERR_unload_CSWIFT_strings();
363 /* (de)initialisation functions. */
364 static int cswift_init(ENGINE
*e
)
366 SW_CONTEXT_HANDLE hac
;
367 t_swAcquireAccContext
*p1
;
368 t_swAttachKeyParam
*p2
;
369 t_swSimpleRequest
*p3
;
370 t_swReleaseAccContext
*p4
;
372 if(cswift_dso
!= NULL
)
374 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_ALREADY_LOADED
);
377 /* Attempt to load libswift.so/swift.dll/whatever. */
378 cswift_dso
= DSO_load(NULL
, get_CSWIFT_LIBNAME(), NULL
, 0);
379 if(cswift_dso
== NULL
)
381 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_NOT_LOADED
);
384 if(!(p1
= (t_swAcquireAccContext
*)
385 DSO_bind_func(cswift_dso
, CSWIFT_F1
)) ||
386 !(p2
= (t_swAttachKeyParam
*)
387 DSO_bind_func(cswift_dso
, CSWIFT_F2
)) ||
388 !(p3
= (t_swSimpleRequest
*)
389 DSO_bind_func(cswift_dso
, CSWIFT_F3
)) ||
390 !(p4
= (t_swReleaseAccContext
*)
391 DSO_bind_func(cswift_dso
, CSWIFT_F4
)))
393 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_NOT_LOADED
);
396 /* Copy the pointers */
397 p_CSwift_AcquireAccContext
= p1
;
398 p_CSwift_AttachKeyParam
= p2
;
399 p_CSwift_SimpleRequest
= p3
;
400 p_CSwift_ReleaseAccContext
= p4
;
401 /* Try and get a context - if not, we may have a DSO but no
403 if(!get_context(&hac
))
405 CSWIFTerr(CSWIFT_F_CSWIFT_INIT
,CSWIFT_R_UNIT_FAILURE
);
408 release_context(hac
);
409 /* Everything's fine. */
413 DSO_free(cswift_dso
);
414 p_CSwift_AcquireAccContext
= NULL
;
415 p_CSwift_AttachKeyParam
= NULL
;
416 p_CSwift_SimpleRequest
= NULL
;
417 p_CSwift_ReleaseAccContext
= NULL
;
421 static int cswift_finish(ENGINE
*e
)
423 free_CSWIFT_LIBNAME();
424 if(cswift_dso
== NULL
)
426 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH
,CSWIFT_R_NOT_LOADED
);
429 if(!DSO_free(cswift_dso
))
431 CSWIFTerr(CSWIFT_F_CSWIFT_FINISH
,CSWIFT_R_UNIT_FAILURE
);
435 p_CSwift_AcquireAccContext
= NULL
;
436 p_CSwift_AttachKeyParam
= NULL
;
437 p_CSwift_SimpleRequest
= NULL
;
438 p_CSwift_ReleaseAccContext
= NULL
;
442 static int cswift_ctrl(ENGINE
*e
, int cmd
, long i
, void *p
, void (*f
)())
444 int initialised
= ((cswift_dso
== NULL
) ? 0 : 1);
447 case CSWIFT_CMD_SO_PATH
:
450 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
,ERR_R_PASSED_NULL_PARAMETER
);
455 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
,CSWIFT_R_ALREADY_LOADED
);
458 return set_CSWIFT_LIBNAME((const char *)p
);
462 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
,CSWIFT_R_CTRL_COMMAND_NOT_IMPLEMENTED
);
466 /* Un petit mod_exp */
467 static int cswift_mod_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
468 const BIGNUM
*m
, BN_CTX
*ctx
)
470 /* I need somewhere to store temporary serialised values for
471 * use with the CryptoSwift API calls. A neat cheat - I'll use
472 * BIGNUMs from the BN_CTX but access their arrays directly as
473 * byte arrays <grin>. This way I don't have to clean anything
480 SW_LARGENUMBER arg
, res
;
482 SW_CONTEXT_HANDLE hac
;
483 int to_return
, acquired
;
485 modulus
= exponent
= argument
= result
= NULL
;
486 to_return
= 0; /* expect failure */
489 if(!get_context(&hac
))
491 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_UNIT_FAILURE
);
495 /* Prepare the params */
497 modulus
= BN_CTX_get(ctx
);
498 exponent
= BN_CTX_get(ctx
);
499 argument
= BN_CTX_get(ctx
);
500 result
= BN_CTX_get(ctx
);
503 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_BN_CTX_FULL
);
506 if(!bn_wexpand(modulus
, m
->top
) || !bn_wexpand(exponent
, p
->top
) ||
507 !bn_wexpand(argument
, a
->top
) || !bn_wexpand(result
, m
->top
))
509 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_BN_EXPAND_FAIL
);
512 sw_param
.type
= SW_ALG_EXP
;
513 sw_param
.up
.exp
.modulus
.nbytes
= BN_bn2bin(m
,
514 (unsigned char *)modulus
->d
);
515 sw_param
.up
.exp
.modulus
.value
= (unsigned char *)modulus
->d
;
516 sw_param
.up
.exp
.exponent
.nbytes
= BN_bn2bin(p
,
517 (unsigned char *)exponent
->d
);
518 sw_param
.up
.exp
.exponent
.value
= (unsigned char *)exponent
->d
;
519 /* Attach the key params */
520 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
525 case SW_ERR_INPUT_SIZE
:
526 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_BAD_KEY_SIZE
);
530 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
531 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_REQUEST_FAILED
);
532 sprintf(tmpbuf
, "%ld", sw_status
);
533 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
537 /* Prepare the argument and response */
538 arg
.nbytes
= BN_bn2bin(a
, (unsigned char *)argument
->d
);
539 arg
.value
= (unsigned char *)argument
->d
;
540 res
.nbytes
= BN_num_bytes(m
);
541 memset(result
->d
, 0, res
.nbytes
);
542 res
.value
= (unsigned char *)result
->d
;
543 /* Perform the operation */
544 if((sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_MODEXP
, &arg
, 1,
547 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
548 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP
,CSWIFT_R_REQUEST_FAILED
);
549 sprintf(tmpbuf
, "%ld", sw_status
);
550 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
553 /* Convert the response */
554 BN_bin2bn((unsigned char *)result
->d
, res
.nbytes
, r
);
558 release_context(hac
);
563 /* Un petit mod_exp chinois */
564 static int cswift_mod_exp_crt(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
565 const BIGNUM
*q
, const BIGNUM
*dmp1
,
566 const BIGNUM
*dmq1
, const BIGNUM
*iqmp
, BN_CTX
*ctx
)
569 SW_LARGENUMBER arg
, res
;
571 SW_CONTEXT_HANDLE hac
;
572 BIGNUM
*rsa_p
= NULL
;
573 BIGNUM
*rsa_q
= NULL
;
574 BIGNUM
*rsa_dmp1
= NULL
;
575 BIGNUM
*rsa_dmq1
= NULL
;
576 BIGNUM
*rsa_iqmp
= NULL
;
577 BIGNUM
*argument
= NULL
;
578 BIGNUM
*result
= NULL
;
579 int to_return
= 0; /* expect failure */
582 if(!get_context(&hac
))
584 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_UNIT_FAILURE
);
588 /* Prepare the params */
590 rsa_p
= BN_CTX_get(ctx
);
591 rsa_q
= BN_CTX_get(ctx
);
592 rsa_dmp1
= BN_CTX_get(ctx
);
593 rsa_dmq1
= BN_CTX_get(ctx
);
594 rsa_iqmp
= BN_CTX_get(ctx
);
595 argument
= BN_CTX_get(ctx
);
596 result
= BN_CTX_get(ctx
);
599 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_BN_CTX_FULL
);
602 if(!bn_wexpand(rsa_p
, p
->top
) || !bn_wexpand(rsa_q
, q
->top
) ||
603 !bn_wexpand(rsa_dmp1
, dmp1
->top
) ||
604 !bn_wexpand(rsa_dmq1
, dmq1
->top
) ||
605 !bn_wexpand(rsa_iqmp
, iqmp
->top
) ||
606 !bn_wexpand(argument
, a
->top
) ||
607 !bn_wexpand(result
, p
->top
+ q
->top
))
609 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_BN_EXPAND_FAIL
);
612 sw_param
.type
= SW_ALG_CRT
;
613 sw_param
.up
.crt
.p
.nbytes
= BN_bn2bin(p
, (unsigned char *)rsa_p
->d
);
614 sw_param
.up
.crt
.p
.value
= (unsigned char *)rsa_p
->d
;
615 sw_param
.up
.crt
.q
.nbytes
= BN_bn2bin(q
, (unsigned char *)rsa_q
->d
);
616 sw_param
.up
.crt
.q
.value
= (unsigned char *)rsa_q
->d
;
617 sw_param
.up
.crt
.dmp1
.nbytes
= BN_bn2bin(dmp1
,
618 (unsigned char *)rsa_dmp1
->d
);
619 sw_param
.up
.crt
.dmp1
.value
= (unsigned char *)rsa_dmp1
->d
;
620 sw_param
.up
.crt
.dmq1
.nbytes
= BN_bn2bin(dmq1
,
621 (unsigned char *)rsa_dmq1
->d
);
622 sw_param
.up
.crt
.dmq1
.value
= (unsigned char *)rsa_dmq1
->d
;
623 sw_param
.up
.crt
.iqmp
.nbytes
= BN_bn2bin(iqmp
,
624 (unsigned char *)rsa_iqmp
->d
);
625 sw_param
.up
.crt
.iqmp
.value
= (unsigned char *)rsa_iqmp
->d
;
626 /* Attach the key params */
627 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
632 case SW_ERR_INPUT_SIZE
:
633 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_BAD_KEY_SIZE
);
637 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
638 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_REQUEST_FAILED
);
639 sprintf(tmpbuf
, "%ld", sw_status
);
640 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
644 /* Prepare the argument and response */
645 arg
.nbytes
= BN_bn2bin(a
, (unsigned char *)argument
->d
);
646 arg
.value
= (unsigned char *)argument
->d
;
647 res
.nbytes
= 2 * BN_num_bytes(p
);
648 memset(result
->d
, 0, res
.nbytes
);
649 res
.value
= (unsigned char *)result
->d
;
650 /* Perform the operation */
651 if((sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_MODEXP_CRT
, &arg
, 1,
654 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
655 CSWIFTerr(CSWIFT_F_CSWIFT_MOD_EXP_CRT
,CSWIFT_R_REQUEST_FAILED
);
656 sprintf(tmpbuf
, "%ld", sw_status
);
657 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
660 /* Convert the response */
661 BN_bin2bn((unsigned char *)result
->d
, res
.nbytes
, r
);
665 release_context(hac
);
670 #ifndef OPENSSL_NO_RSA
671 static int cswift_rsa_mod_exp(BIGNUM
*r0
, const BIGNUM
*I
, RSA
*rsa
)
676 if((ctx
= BN_CTX_new()) == NULL
)
678 if(!rsa
->p
|| !rsa
->q
|| !rsa
->dmp1
|| !rsa
->dmq1
|| !rsa
->iqmp
)
680 CSWIFTerr(CSWIFT_F_CSWIFT_RSA_MOD_EXP
,CSWIFT_R_MISSING_KEY_COMPONENTS
);
683 to_return
= cswift_mod_exp_crt(r0
, I
, rsa
->p
, rsa
->q
, rsa
->dmp1
,
684 rsa
->dmq1
, rsa
->iqmp
, ctx
);
692 /* This function is aliased to mod_exp (with the mont stuff dropped). */
693 static int cswift_mod_exp_mont(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
694 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
)
696 return cswift_mod_exp(r
, a
, p
, m
, ctx
);
699 #ifndef OPENSSL_NO_DSA
700 static DSA_SIG
*cswift_dsa_sign(const unsigned char *dgst
, int dlen
, DSA
*dsa
)
702 SW_CONTEXT_HANDLE hac
;
705 SW_LARGENUMBER arg
, res
;
708 BIGNUM
*dsa_p
= NULL
;
709 BIGNUM
*dsa_q
= NULL
;
710 BIGNUM
*dsa_g
= NULL
;
711 BIGNUM
*dsa_key
= NULL
;
712 BIGNUM
*result
= NULL
;
713 DSA_SIG
*to_return
= NULL
;
716 if((ctx
= BN_CTX_new()) == NULL
)
718 if(!get_context(&hac
))
720 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_UNIT_FAILURE
);
724 /* Prepare the params */
726 dsa_p
= BN_CTX_get(ctx
);
727 dsa_q
= BN_CTX_get(ctx
);
728 dsa_g
= BN_CTX_get(ctx
);
729 dsa_key
= BN_CTX_get(ctx
);
730 result
= BN_CTX_get(ctx
);
733 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_BN_CTX_FULL
);
736 if(!bn_wexpand(dsa_p
, dsa
->p
->top
) ||
737 !bn_wexpand(dsa_q
, dsa
->q
->top
) ||
738 !bn_wexpand(dsa_g
, dsa
->g
->top
) ||
739 !bn_wexpand(dsa_key
, dsa
->priv_key
->top
) ||
740 !bn_wexpand(result
, dsa
->p
->top
))
742 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_BN_EXPAND_FAIL
);
745 sw_param
.type
= SW_ALG_DSA
;
746 sw_param
.up
.dsa
.p
.nbytes
= BN_bn2bin(dsa
->p
,
747 (unsigned char *)dsa_p
->d
);
748 sw_param
.up
.dsa
.p
.value
= (unsigned char *)dsa_p
->d
;
749 sw_param
.up
.dsa
.q
.nbytes
= BN_bn2bin(dsa
->q
,
750 (unsigned char *)dsa_q
->d
);
751 sw_param
.up
.dsa
.q
.value
= (unsigned char *)dsa_q
->d
;
752 sw_param
.up
.dsa
.g
.nbytes
= BN_bn2bin(dsa
->g
,
753 (unsigned char *)dsa_g
->d
);
754 sw_param
.up
.dsa
.g
.value
= (unsigned char *)dsa_g
->d
;
755 sw_param
.up
.dsa
.key
.nbytes
= BN_bn2bin(dsa
->priv_key
,
756 (unsigned char *)dsa_key
->d
);
757 sw_param
.up
.dsa
.key
.value
= (unsigned char *)dsa_key
->d
;
758 /* Attach the key params */
759 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
764 case SW_ERR_INPUT_SIZE
:
765 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_BAD_KEY_SIZE
);
769 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
770 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_REQUEST_FAILED
);
771 sprintf(tmpbuf
, "%ld", sw_status
);
772 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
776 /* Prepare the argument and response */
778 arg
.value
= (unsigned char *)dgst
;
779 res
.nbytes
= BN_num_bytes(dsa
->p
);
780 memset(result
->d
, 0, res
.nbytes
);
781 res
.value
= (unsigned char *)result
->d
;
782 /* Perform the operation */
783 sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_DSS_SIGN
, &arg
, 1,
785 if(sw_status
!= SW_OK
)
787 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
788 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_SIGN
,CSWIFT_R_REQUEST_FAILED
);
789 sprintf(tmpbuf
, "%ld", sw_status
);
790 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
793 /* Convert the response */
794 ptr
= (unsigned char *)result
->d
;
795 if((to_return
= DSA_SIG_new()) == NULL
)
797 to_return
->r
= BN_bin2bn((unsigned char *)result
->d
, 20, NULL
);
798 to_return
->s
= BN_bin2bn((unsigned char *)result
->d
+ 20, 20, NULL
);
802 release_context(hac
);
811 static int cswift_dsa_verify(const unsigned char *dgst
, int dgst_len
,
812 DSA_SIG
*sig
, DSA
*dsa
)
814 SW_CONTEXT_HANDLE hac
;
817 SW_LARGENUMBER arg
[2], res
;
818 unsigned long sig_result
;
820 BIGNUM
*dsa_p
= NULL
;
821 BIGNUM
*dsa_q
= NULL
;
822 BIGNUM
*dsa_g
= NULL
;
823 BIGNUM
*dsa_key
= NULL
;
824 BIGNUM
*argument
= NULL
;
828 if((ctx
= BN_CTX_new()) == NULL
)
830 if(!get_context(&hac
))
832 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_UNIT_FAILURE
);
836 /* Prepare the params */
838 dsa_p
= BN_CTX_get(ctx
);
839 dsa_q
= BN_CTX_get(ctx
);
840 dsa_g
= BN_CTX_get(ctx
);
841 dsa_key
= BN_CTX_get(ctx
);
842 argument
= BN_CTX_get(ctx
);
845 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_BN_CTX_FULL
);
848 if(!bn_wexpand(dsa_p
, dsa
->p
->top
) ||
849 !bn_wexpand(dsa_q
, dsa
->q
->top
) ||
850 !bn_wexpand(dsa_g
, dsa
->g
->top
) ||
851 !bn_wexpand(dsa_key
, dsa
->pub_key
->top
) ||
852 !bn_wexpand(argument
, 40))
854 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_BN_EXPAND_FAIL
);
857 sw_param
.type
= SW_ALG_DSA
;
858 sw_param
.up
.dsa
.p
.nbytes
= BN_bn2bin(dsa
->p
,
859 (unsigned char *)dsa_p
->d
);
860 sw_param
.up
.dsa
.p
.value
= (unsigned char *)dsa_p
->d
;
861 sw_param
.up
.dsa
.q
.nbytes
= BN_bn2bin(dsa
->q
,
862 (unsigned char *)dsa_q
->d
);
863 sw_param
.up
.dsa
.q
.value
= (unsigned char *)dsa_q
->d
;
864 sw_param
.up
.dsa
.g
.nbytes
= BN_bn2bin(dsa
->g
,
865 (unsigned char *)dsa_g
->d
);
866 sw_param
.up
.dsa
.g
.value
= (unsigned char *)dsa_g
->d
;
867 sw_param
.up
.dsa
.key
.nbytes
= BN_bn2bin(dsa
->pub_key
,
868 (unsigned char *)dsa_key
->d
);
869 sw_param
.up
.dsa
.key
.value
= (unsigned char *)dsa_key
->d
;
870 /* Attach the key params */
871 sw_status
= p_CSwift_AttachKeyParam(hac
, &sw_param
);
876 case SW_ERR_INPUT_SIZE
:
877 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_BAD_KEY_SIZE
);
881 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
882 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_REQUEST_FAILED
);
883 sprintf(tmpbuf
, "%ld", sw_status
);
884 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
888 /* Prepare the argument and response */
889 arg
[0].nbytes
= dgst_len
;
890 arg
[0].value
= (unsigned char *)dgst
;
892 arg
[1].value
= (unsigned char *)argument
->d
;
893 memset(arg
[1].value
, 0, 40);
894 BN_bn2bin(sig
->r
, arg
[1].value
+ 20 - BN_num_bytes(sig
->r
));
895 BN_bn2bin(sig
->s
, arg
[1].value
+ 40 - BN_num_bytes(sig
->s
));
896 res
.nbytes
= 4; /* unsigned long */
897 res
.value
= (unsigned char *)(&sig_result
);
898 /* Perform the operation */
899 sw_status
= p_CSwift_SimpleRequest(hac
, SW_CMD_DSS_VERIFY
, arg
, 2,
901 if(sw_status
!= SW_OK
)
903 char tmpbuf
[DECIMAL_SIZE(sw_status
)+1];
904 CSWIFTerr(CSWIFT_F_CSWIFT_DSA_VERIFY
,CSWIFT_R_REQUEST_FAILED
);
905 sprintf(tmpbuf
, "%ld", sw_status
);
906 ERR_add_error_data(2, "CryptoSwift error number is ",tmpbuf
);
909 /* Convert the response */
910 to_return
= ((sig_result
== 0) ? 0 : 1);
914 release_context(hac
);
924 #ifndef OPENSSL_NO_DH
925 /* This function is aliased to mod_exp (with the dh and mont dropped). */
926 static int cswift_mod_exp_dh(const DH
*dh
, BIGNUM
*r
,
927 const BIGNUM
*a
, const BIGNUM
*p
,
928 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
)
930 return cswift_mod_exp(r
, a
, p
, m
, ctx
);
934 /* Random bytes are good */
935 static int cswift_rand_bytes(unsigned char *buf
, int num
)
937 SW_CONTEXT_HANDLE hac
;
939 SW_LARGENUMBER largenum
;
942 int to_return
= 0; /* assume failure */
944 if (!get_context(&hac
))
946 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
, CSWIFT_R_UNIT_FAILURE
);
951 while (nbytes
< (size_t)num
)
953 /* tell CryptoSwift how many bytes we want and where we want it.
954 * Note: - CryptoSwift cannot do more than 4096 bytes at a time.
955 * - CryptoSwift can only do multiple of 32-bits. */
956 largenum
.value
= (SW_BYTE
*) buf
+ nbytes
;
957 if (4096 > num
- nbytes
)
958 largenum
.nbytes
= num
- nbytes
;
960 largenum
.nbytes
= 4096;
962 swrc
= p_CSwift_SimpleRequest(hac
, SW_CMD_RAND
, NULL
, 0, &largenum
, 1);
966 CSWIFTerr(CSWIFT_F_CSWIFT_CTRL
, CSWIFT_R_REQUEST_FAILED
);
967 sprintf(tmpbuf
, "%ld", swrc
);
968 ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf
);
972 nbytes
+= largenum
.nbytes
;
974 to_return
= 1; /* success */
978 release_context(hac
);
982 static int cswift_rand_status(void)
988 /* This stuff is needed if this ENGINE is being compiled into a self-contained
990 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
991 static int bind_fn(ENGINE
*e
, const char *id
)
993 if(id
&& (strcmp(id
, engine_cswift_id
) != 0))
999 IMPLEMENT_DYNAMIC_CHECK_FN()
1000 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn
)
1001 #endif /* OPENSSL_NO_DYNAMIC_ENGINE */
1003 #endif /* !OPENSSL_NO_HW_CSWIFT */
1004 #endif /* !OPENSSL_NO_HW */