hw_cswift.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/* crypto/engine/hw_cswift.c */
/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
* project 2000.
*/
/* ====================================================================
* Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include "cryptlib.h"
#ifndef OPENSSL_NO_HW
#ifndef OPENSSL_NO_HW_CSWIFT
/* Attribution notice: Rainbow have generously allowed me to reproduce
* the necessary definitions here from their API. This means the support
* can build independently of whether application builders have the
* API or hardware. This will allow developers to easily produce software
* that has latent hardware support for any users that have accelerators
* installed, without the developers themselves needing anything extra.
*
* I have only clipped the parts from the CryptoSwift header files that
* are (or seem) relevant to the CryptoSwift support code. This is
* simply to keep the file sizes reasonable.
* [Geoff]
*/
#ifdef FLAT_INC
#include "cswift.h"
#else
#include "vendor_defns/cswift.h"
#endif
#define CSWIFT_LIB_NAME "cswift engine"
#include "hw_cswift_err.c"
static int cswift_destroy(ENGINE *e);
static int cswift_init(ENGINE *e);
static int cswift_finish(ENGINE *e);
/* BIGNUM stuff */
#ifndef OPENSSL_NO_RSA
/* RSA stuff */
#endif
/* This function is aliased to mod_exp (with the mont stuff dropped). */
#ifndef OPENSSL_NO_DSA
/* DSA stuff */
#endif
#ifndef OPENSSL_NO_DH
/* DH stuff */
/* This function is alised to mod_exp (with the DH and mont dropped). */
#endif
/* RAND stuff */
static int cswift_rand_status(void);
/* The definitions for control commands specific to this engine */
#define CSWIFT_CMD_SO_PATH ENGINE_CMD_BASE
static const ENGINE_CMD_DEFN cswift_cmd_defns[] = {
"SO_PATH",
"Specifies the path to the 'cswift' shared library",
};
#ifndef OPENSSL_NO_RSA
/* Our internal RSA_METHOD that we provide pointers to */
static RSA_METHOD cswift_rsa =
{
"CryptoSwift RSA method",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
0,
NULL,
NULL,
};
#endif
#ifndef OPENSSL_NO_DSA
/* Our internal DSA_METHOD that we provide pointers to */
static DSA_METHOD cswift_dsa =
{
"CryptoSwift DSA method",
NULL, /* dsa_sign_setup */
NULL, /* dsa_mod_exp */
NULL, /* bn_mod_exp */
NULL, /* init */
NULL, /* finish */
0, /* flags */
NULL /* app_data */
};
#endif
#ifndef OPENSSL_NO_DH
/* Our internal DH_METHOD that we provide pointers to */
{
"CryptoSwift DH method",
NULL,
NULL,
NULL,
NULL,
0,
};
#endif
static RAND_METHOD cswift_random =
{
/* "CryptoSwift RAND method", */
NULL,
NULL,
NULL,
};
/* Constants used when creating the ENGINE */
static const char *engine_cswift_id = "cswift";
static const char *engine_cswift_name = "CryptoSwift hardware engine support";
/* This internal function is used by ENGINE_cswift() and possibly by the
* "dynamic" ENGINE support too */
static int bind_helper(ENGINE *e)
{
#ifndef OPENSSL_NO_RSA
const RSA_METHOD *meth1;
#endif
#ifndef OPENSSL_NO_DH
#endif
if(!ENGINE_set_id(e, engine_cswift_id) ||
!ENGINE_set_name(e, engine_cswift_name) ||
#ifndef OPENSSL_NO_RSA
!ENGINE_set_RSA(e, &cswift_rsa) ||
#endif
#ifndef OPENSSL_NO_DSA
!ENGINE_set_DSA(e, &cswift_dsa) ||
#endif
#ifndef OPENSSL_NO_DH
!ENGINE_set_DH(e, &cswift_dh) ||
#endif
!ENGINE_set_RAND(e, &cswift_random) ||
!ENGINE_set_init_function(e, cswift_init) ||
!ENGINE_set_ctrl_function(e, cswift_ctrl) ||
return 0;
#ifndef OPENSSL_NO_RSA
/* We know that the "PKCS1_SSLeay()" functions hook properly
* to the cswift-specific mod_exp and mod_exp_crt so we use
* those functions. NB: We don't use ENGINE_openssl() or
* anything "more generic" because something like the RSAref
* code may not hook properly, and if you own one of these
* cards then you have the right to do RSA operations on it
* anyway! */
meth1 = RSA_PKCS1_SSLeay();
#endif
#ifndef OPENSSL_NO_DH
/* Much the same for Diffie-Hellman */
meth2 = DH_OpenSSL();
#endif
/* Ensure the cswift error handling is set up */
return 1;
}
#ifndef ENGINE_DYNAMIC_SUPPORT
static ENGINE *engine_cswift(void)
{
if(!ret)
return NULL;
if(!bind_helper(ret))
{
return NULL;
}
return ret;
}
void ENGINE_load_cswift(void)
{
/* Copied from eng_[openssl|dyn].c */
if(!toadd) return;
}
#endif
/* This is a process-global DSO handle used for loading and unloading
* the CryptoSwift library. NB: This is only set (or unset) during an
* init() or finish() call (reference counts permitting) and they're
* operating with global locks, so this should be thread-safe
* implicitly. */
/* These are the function pointers that are (un)set when the library has
* successfully (un)loaded. */
/* Used in the DSO operations. */
static const char *CSWIFT_LIBNAME = NULL;
static const char *get_CSWIFT_LIBNAME(void)
{
if(CSWIFT_LIBNAME)
return CSWIFT_LIBNAME;
return "swift";
}
static void free_CSWIFT_LIBNAME(void)
{
if(CSWIFT_LIBNAME)
OPENSSL_free((void*)CSWIFT_LIBNAME);
}
static long set_CSWIFT_LIBNAME(const char *name)
{
}
static const char *CSWIFT_F1 = "swAcquireAccContext";
static const char *CSWIFT_F2 = "swAttachKeyParam";
static const char *CSWIFT_F3 = "swSimpleRequest";
static const char *CSWIFT_F4 = "swReleaseAccContext";
/* CryptoSwift library functions and mechanics - these are used by the
* higher-level functions further down. NB: As and where there's no
* error checking, take a look lower down where these functions are
* called, the checking and error handling is probably down there. */
/* utility function to obtain a context */
{
return 0;
return 1;
}
/* similarly to release one. */
{
}
/* Destructor (complements the "ENGINE_cswift()" constructor) */
static int cswift_destroy(ENGINE *e)
{
return 1;
}
/* (de)initialisation functions. */
static int cswift_init(ENGINE *e)
{
if(cswift_dso != NULL)
{
goto err;
}
/* Attempt to load libswift.so/swift.dll/whatever. */
if(cswift_dso == NULL)
{
goto err;
}
if(!(p1 = (t_swAcquireAccContext *)
!(p2 = (t_swAttachKeyParam *)
!(p3 = (t_swSimpleRequest *)
!(p4 = (t_swReleaseAccContext *)
{
goto err;
}
/* Copy the pointers */
/* Try and get a context - if not, we may have a DSO but no
* accelerator! */
if(!get_context(&hac))
{
goto err;
}
/* Everything's fine. */
return 1;
err:
if(cswift_dso)
return 0;
}
static int cswift_finish(ENGINE *e)
{
if(cswift_dso == NULL)
{
return 0;
}
if(!DSO_free(cswift_dso))
{
return 0;
}
cswift_dso = NULL;
return 1;
}
{
switch(cmd)
{
case CSWIFT_CMD_SO_PATH:
if(p == NULL)
{
return 0;
}
if(initialised)
{
return 0;
}
return set_CSWIFT_LIBNAME((const char *)p);
default:
break;
}
return 0;
}
/* Un petit mod_exp */
{
/* I need somewhere to store temporary serialised values for
* use with the CryptoSwift API calls. A neat cheat - I'll use
* BIGNUMs from the BN_CTX but access their arrays directly as
* byte arrays <grin>. This way I don't have to clean anything
* up. */
to_return = 0; /* expect failure */
acquired = 0;
if(!get_context(&hac))
{
goto err;
}
acquired = 1;
/* Prepare the params */
if(!result)
{
goto err;
}
{
goto err;
}
(unsigned char *)modulus->d);
(unsigned char *)exponent->d);
/* Attach the key params */
switch(sw_status)
{
case SW_OK:
break;
case SW_ERR_INPUT_SIZE:
goto err;
default:
{
}
goto err;
}
/* Prepare the argument and response */
/* Perform the operation */
{
goto err;
}
/* Convert the response */
to_return = 1;
err:
if(acquired)
return to_return;
}
/* Un petit mod_exp chinois */
{
int to_return = 0; /* expect failure */
int acquired = 0;
if(!get_context(&hac))
{
goto err;
}
acquired = 1;
/* Prepare the params */
if(!result)
{
goto err;
}
{
goto err;
}
(unsigned char *)rsa_dmp1->d);
(unsigned char *)rsa_dmq1->d);
(unsigned char *)rsa_iqmp->d);
/* Attach the key params */
switch(sw_status)
{
case SW_OK:
break;
case SW_ERR_INPUT_SIZE:
goto err;
default:
{
}
goto err;
}
/* Prepare the argument and response */
/* Perform the operation */
{
goto err;
}
/* Convert the response */
to_return = 1;
err:
if(acquired)
return to_return;
}
#ifndef OPENSSL_NO_RSA
{
int to_return = 0;
goto err;
{
goto err;
}
err:
if(ctx)
return to_return;
}
#endif
/* This function is aliased to mod_exp (with the mont stuff dropped). */
{
return cswift_mod_exp(r, a, p, m, ctx);
}
#ifndef OPENSSL_NO_DSA
{
unsigned char *ptr;
int acquired = 0;
goto err;
if(!get_context(&hac))
{
goto err;
}
acquired = 1;
/* Prepare the params */
if(!result)
{
goto err;
}
{
goto err;
}
(unsigned char *)dsa_p->d);
(unsigned char *)dsa_q->d);
(unsigned char *)dsa_g->d);
(unsigned char *)dsa_key->d);
/* Attach the key params */
switch(sw_status)
{
case SW_OK:
break;
case SW_ERR_INPUT_SIZE:
goto err;
default:
{
}
goto err;
}
/* Prepare the argument and response */
/* Perform the operation */
&res, 1);
{
goto err;
}
/* Convert the response */
goto err;
err:
if(acquired)
if(ctx)
{
}
return to_return;
}
{
unsigned long sig_result;
int to_return = -1;
int acquired = 0;
goto err;
if(!get_context(&hac))
{
goto err;
}
acquired = 1;
/* Prepare the params */
if(!argument)
{
goto err;
}
{
goto err;
}
(unsigned char *)dsa_p->d);
(unsigned char *)dsa_q->d);
(unsigned char *)dsa_g->d);
(unsigned char *)dsa_key->d);
/* Attach the key params */
switch(sw_status)
{
case SW_OK:
break;
case SW_ERR_INPUT_SIZE:
goto err;
default:
{
}
goto err;
}
/* Prepare the argument and response */
/* Perform the operation */
&res, 1);
{
goto err;
}
/* Convert the response */
err:
if(acquired)
if(ctx)
{
}
return to_return;
}
#endif
#ifndef OPENSSL_NO_DH
/* This function is aliased to mod_exp (with the dh and mont dropped). */
{
return cswift_mod_exp(r, a, p, m, ctx);
}
#endif
/* Random bytes are good */
{
int acquired = 0;
int to_return = 0; /* assume failure */
if (!get_context(&hac))
{
goto err;
}
acquired = 1;
{
/* tell CryptoSwift how many bytes we want and where we want it.
* Note: - CryptoSwift cannot do more than 4096 bytes at a time.
* - CryptoSwift can only do multiple of 32-bits. */
else
{
char tmpbuf[20];
goto err;
}
}
err:
if (acquired)
return to_return;
}
static int cswift_rand_status(void)
{
return 1;
}
/* This stuff is needed if this ENGINE is being compiled into a self-contained
* shared-library. */
#ifdef ENGINE_DYNAMIC_SUPPORT
{
return 0;
if(!bind_helper(e))
return 0;
return 1;
}
#endif /* ENGINE_DYNAMIC_SUPPORT */
#endif /* !OPENSSL_NO_HW_CSWIFT */
#endif /* !OPENSSL_NO_HW */