/*-
* Support for VIA PadLock Advanced Cryptography Engine (ACE)
* Written by Michal Ludvig <michal@logix.cz>
* http://www.logix.cz/michal
*
* Big thanks to Andy Polyakov for a help with optimization,
* assembler fixes, port to MS Windows and a lot of other
* valuable work on this engine!
*/
/* ====================================================================
* 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 <stdio.h>
#include <string.h>
#include <openssl/opensslconf.h>
#include <openssl/crypto.h>
#include <openssl/dso.h>
#include <openssl/engine.h>
#include <openssl/evp.h>
#ifndef OPENSSL_NO_AES
# include <openssl/aes.h>
#endif
#include <openssl/rand.h>
#include <openssl/err.h>
#ifndef OPENSSL_NO_HW
# ifndef OPENSSL_NO_HW_PADLOCK
/* Attempt to have a single source for both 0.9.7 and 0.9.8 :-) */
# if (OPENSSL_VERSION_NUMBER >= 0x00908000L)
# ifndef OPENSSL_NO_DYNAMIC_ENGINE
# define DYNAMIC_ENGINE
# endif
# elif (OPENSSL_VERSION_NUMBER >= 0x00907000L)
# ifdef ENGINE_DYNAMIC_SUPPORT
# define DYNAMIC_ENGINE
# endif
# else
# error "Only OpenSSL >= 0.9.7 is supported"
# endif
/*
* VIA PadLock AES is available *ONLY* on some x86 CPUs. Not only that it
* doesn't exist elsewhere, but it even can't be compiled on other platforms!
*
* In addition, because of the heavy use of inline assembler, compiler choice
* is limited to GCC and Microsoft C.
*/
# undef COMPILE_HW_PADLOCK
# if !defined(I386_ONLY) && !defined(OPENSSL_NO_INLINE_ASM)
# if (defined(__GNUC__) && (defined(__i386__) || defined(__i386))) || \
(defined(_MSC_VER) && defined(_M_IX86))
# define COMPILE_HW_PADLOCK
static ENGINE *ENGINE_padlock(void);
# endif
# endif
# ifdef OPENSSL_NO_DYNAMIC_ENGINE
void ENGINE_load_padlock(void)
{
/* On non-x86 CPUs it just returns. */
# ifdef COMPILE_HW_PADLOCK
ENGINE *toadd = ENGINE_padlock();
if (!toadd)
return;
ENGINE_add(toadd);
ENGINE_free(toadd);
ERR_clear_error();
# endif
}
# endif
# ifdef COMPILE_HW_PADLOCK
/*
* We do these includes here to avoid header problems on platforms that do
* not have the VIA padlock anyway...
*/
# include <stdlib.h>
# ifdef _WIN32
# include <malloc.h>
# ifndef alloca
# define alloca _alloca
# endif
# elif defined(__GNUC__)
# ifndef alloca
# define alloca(s) __builtin_alloca(s)
# endif
# endif
/* Function for ENGINE detection and control */
static int padlock_available(void);
static int padlock_init(ENGINE *e);
/* RNG Stuff */
static RAND_METHOD padlock_rand;
/* Cipher Stuff */
# ifndef OPENSSL_NO_AES
static int padlock_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
const int **nids, int nid);
# endif
/* Engine names */
static const char *padlock_id = "padlock";
static char padlock_name[100];
/* Available features */
static int padlock_use_ace = 0; /* Advanced Cryptography Engine */
static int padlock_use_rng = 0; /* Random Number Generator */
# ifndef OPENSSL_NO_AES
static int padlock_aes_align_required = 1;
# endif
/* ===== Engine "management" functions ===== */
/* Prepare the ENGINE structure for registration */
static int padlock_bind_helper(ENGINE *e)
{
/* Check available featu