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/* crypto/engine/eng_rsax.c */
/* Copyright (c) 2010-2010 Intel Corp.
* Author: Vinodh.Gopal@intel.com
* Jim Guilford
* Erdinc.Ozturk@intel.com
* Maxim.Perminov@intel.com
* Ying.Huang@intel.com
*
* More information about algorithm used can be found at:
* http://www.cse.buffalo.edu/srds2009/escs2009_submission_Gopal.pdf
*/
/* ====================================================================
* 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
* the documentation and/or other materials provided with the
* 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 <openssl/opensslconf.h>
#include <stdio.h>
#include <string.h>
#include <openssl/crypto.h>
#include <openssl/buffer.h>
#include <openssl/engine.h>
#ifndef OPENSSL_NO_RSA
#include <openssl/rsa.h>
#endif
#include <openssl/bn.h>
#include <openssl/err.h>
/* RSAX is available **ONLY* on x86_64 CPUs */
#undef COMPILE_RSAX
#if (defined(__x86_64) || defined(__x86_64__) || \
defined(_M_AMD64) || defined (_M_X64)) && !defined(OPENSSL_NO_ASM)
#define COMPILE_RSAX
static ENGINE *ENGINE_rsax (void);
#endif
void ENGINE_load_rsax (void)
{
/* On non-x86 CPUs it just returns. */
#ifdef COMPILE_RSAX
ENGINE *toadd = ENGINE_rsax();
if(!toadd) return;
ENGINE_add(toadd);
ENGINE_free(toadd);
ERR_clear_error();
#endif
}
#ifdef COMPILE_RSAX
#define E_RSAX_LIB_NAME "rsax engine"
static int e_rsax_destroy(ENGINE *e);
static int e_rsax_init(ENGINE *e);
static int e_rsax_finish(ENGINE *e);
static int e_rsax_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void));
#ifndef OPENSSL_NO_RSA
/* RSA stuff */
static int e_rsax_rsa_mod_exp(BIGNUM *r, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
static int e_rsax_rsa_finish(RSA *r);
#endif
static const ENGINE_CMD_DEFN e_rsax_cmd_defns[] = {
{0, NULL, NULL, 0}
};
#ifndef OPENSSL_NO_RSA
/* Our internal RSA_METHOD that we provide pointers to */
static RSA_METHOD e_rsax_rsa =
{
"Intel RSA-X method",
NULL,
NULL,
NULL,
NULL,
e_rsax_rsa_mod_exp,
NULL,
NULL,
e_rsax_rsa_finish,
RSA_FLAG_CACHE_PUBLIC|RSA_FLAG_CACHE_PRIVATE,
NULL,
NULL,
NULL
};
#endif
/* Constants used when creating the ENGINE */
static const char *engine_e_rsax_id = "rsax";
static const char *engine_e_rsax_name = "RSAX engine support";
/* This internal function is used by ENGINE_rsax() */
static int bind_helper(ENGINE *e)
{
#ifndef OPENSSL_NO_RSA
const RSA_METHOD *meth1;
#endif
if(!ENGINE_set_id(e, engine_e_rsax_id) ||
!ENGINE_set_name(e, engine_e_rsax_name) ||
#ifndef OPENSSL_NO_RSA
!ENGINE_set_RSA(e, &e_rsax_rsa) ||
#endif
!ENGINE_set_destroy_function(e, e_rsax_destroy) ||
!ENGINE_set_init_function(e, e_rsax_init) ||
!ENGINE_set_finish_function(e, e_rsax_finish) ||
!ENGINE_set_ctrl_function(e, e_rsax_ctrl) ||
!ENGINE_set_cmd_defns(e, e_rsax_cmd_defns))
return 0;
#ifndef OPENSSL_NO_RSA
meth1 = RSA_PKCS1_SSLeay();
e_rsax_rsa.rsa_pub_enc = meth1->rsa_pub_enc;
e_rsax_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
e_rsax_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
e_rsax_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
e_rsax_rsa.bn_mod_exp = meth1->bn_mod_exp;
e_rsax_rsa.finish = meth1->finish;
#endif
return 1;
}
static ENGINE *ENGINE_rsax(void)
{
ENGINE *ret = ENGINE_new();
if(!ret)
return NULL;
if(!bind_helper(ret))
{
ENGINE_free(ret);
return NULL;
}
return ret;
}
#ifndef OPENSSL_NO_RSA
/* Used to attach our own key-data to an RSA structure */
static int rsax_ex_data_idx = -1;
#endif
static int e_rsax_destroy(ENGINE *e)
{
return 1;
}
/* (de)initialisation functions. */
static int e_rsax_init(ENGINE *e)
{
#ifndef OPENSSL_NO_RSA
if (rsax_ex_data_idx == -1)
rsax_ex_data_idx = RSA_get_ex_new_index(0,
NULL,
NULL, NULL, NULL);
#endif
if (rsax_ex_data_idx == -1)
return 0;
return 1;
}
static int e_rsax_finish(ENGINE *e)
{
return 1;
}
static int e_rsax_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
{
int to_return = 1;
switch(cmd)
{
/* The command isn't understood by this engine */
default:
to_return = 0;
break;
}
return to_return;
}
#ifndef OPENSSL_NO_RSA
#ifdef _WIN32
typedef unsigned __int64 UINT64;
#else
typedef unsigned long long UINT64;
#endif
typedef unsigned short UINT16;
/* Table t is interleaved in the following manner:
* The order in memory is t[0][0], t[0][1], ..., t[0][7], t[1][0], ...
* A particular 512-bit value is stored in t[][index] rather than the more
* normal t[index][]; i.e. the qwords of a particular entry in t are not
* adjacent in memory
*/
/* Init BIGNUM b from the interleaved UINT64 array */
static int interleaved_array_to_bn_512(BIGNUM* b, UINT64 *array);
/* Extract array elements from BIGNUM b
* To set the whole array from b, call with n=8
*/
static int bn_extract_to_array_512(const BIGNUM* b, unsigned int n, UINT64 *array);
struct mod_ctx_512 {
UINT64 t[8][8];
UINT64 m[8];
UINT64 m1[8]; /* 2^278 % m */
UINT64 m2[8]; /* 2^640 % m */
UINT64 k1[2]; /* (- 1/m) % 2^128 */
};
static int mod_exp_pre_compute_data_512(UINT64 *m, struct mod_ctx_512 *data);
void mod_exp_512(UINT64 *result, /* 512 bits, 8 qwords */
UINT64 *g, /* 512 bits, 8 qwords */
UINT64 *exp, /* 512 bits, 8 qwords */
struct mod_ctx_512 *data);
typedef struct st_e_rsax_mod_ctx
{
UINT64 type;
union {
struct mod_ctx_512 b512;
} ctx;
} E_RSAX_MOD_CTX;<
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