167 строки
5.6 KiB
C
167 строки
5.6 KiB
C
/* Rijndael (AES) for GnuPG
|
|
* Copyright (C) 2000, 2001, 2002, 2003, 2007,
|
|
* 2008, 2011, 2012 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of Libgcrypt.
|
|
*
|
|
* Libgcrypt is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as
|
|
* published by the Free Software Foundation; either version 2.1 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* Libgcrypt is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef G10_RIJNDAEL_INTERNAL_H
|
|
#define G10_RIJNDAEL_INTERNAL_H
|
|
|
|
#include "types.h" /* for byte and u32 typedefs */
|
|
|
|
|
|
#define MAXKC (256/32)
|
|
#define MAXROUNDS 14
|
|
#define BLOCKSIZE (128/8)
|
|
|
|
|
|
/* Helper macro to force alignment to 16 bytes. */
|
|
#ifdef HAVE_GCC_ATTRIBUTE_ALIGNED
|
|
# define ATTR_ALIGNED_16 __attribute__ ((aligned (16)))
|
|
#else
|
|
# define ATTR_ALIGNED_16
|
|
#endif
|
|
|
|
|
|
/* USE_AMD64_ASM indicates whether to use AMD64 assembly code. */
|
|
#undef USE_AMD64_ASM
|
|
#if defined(__x86_64__) && (defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS) || \
|
|
defined(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS))
|
|
# define USE_AMD64_ASM 1
|
|
#endif
|
|
|
|
/* USE_SSSE3 indicates whether to use SSSE3 code. */
|
|
#if defined(__x86_64__) && defined(HAVE_GCC_INLINE_ASM_SSSE3) && \
|
|
(defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS) || \
|
|
defined(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS))
|
|
# define USE_SSSE3 1
|
|
#endif
|
|
|
|
/* USE_ARM_ASM indicates whether to use ARM assembly code. */
|
|
#undef USE_ARM_ASM
|
|
#if defined(__ARMEL__)
|
|
# ifdef HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS
|
|
# define USE_ARM_ASM 1
|
|
# endif
|
|
#endif
|
|
#if defined(__AARCH64EL__)
|
|
# ifdef HAVE_COMPATIBLE_GCC_AARCH64_PLATFORM_AS
|
|
# define USE_ARM_ASM 1
|
|
# endif
|
|
#endif
|
|
|
|
/* USE_PADLOCK indicates whether to compile the padlock specific
|
|
code. */
|
|
#undef USE_PADLOCK
|
|
#ifdef ENABLE_PADLOCK_SUPPORT
|
|
# ifdef HAVE_GCC_ATTRIBUTE_ALIGNED
|
|
# if (defined (__i386__) && SIZEOF_UNSIGNED_LONG == 4) || defined(__x86_64__)
|
|
# define USE_PADLOCK 1
|
|
# endif
|
|
# endif
|
|
#endif /*ENABLE_PADLOCK_SUPPORT*/
|
|
|
|
/* USE_AESNI inidicates whether to compile with Intel AES-NI code. We
|
|
need the vector-size attribute which seems to be available since
|
|
gcc 3. However, to be on the safe side we require at least gcc 4. */
|
|
#undef USE_AESNI
|
|
#ifdef ENABLE_AESNI_SUPPORT
|
|
# if ((defined (__i386__) && SIZEOF_UNSIGNED_LONG == 4) || defined(__x86_64__))
|
|
# if __GNUC__ >= 4
|
|
# define USE_AESNI 1
|
|
# endif
|
|
# endif
|
|
#endif /* ENABLE_AESNI_SUPPORT */
|
|
|
|
/* USE_ARM_CE indicates whether to enable ARMv8 Crypto Extension assembly
|
|
* code. */
|
|
#undef USE_ARM_CE
|
|
#ifdef ENABLE_ARM_CRYPTO_SUPPORT
|
|
# if defined(HAVE_ARM_ARCH_V6) && defined(__ARMEL__) \
|
|
&& defined(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS) \
|
|
&& defined(HAVE_GCC_INLINE_ASM_AARCH32_CRYPTO)
|
|
# define USE_ARM_CE 1
|
|
# elif defined(__AARCH64EL__) \
|
|
&& defined(HAVE_COMPATIBLE_GCC_AARCH64_PLATFORM_AS) \
|
|
&& defined(HAVE_GCC_INLINE_ASM_AARCH64_CRYPTO)
|
|
# define USE_ARM_CE 1
|
|
# endif
|
|
#endif /* ENABLE_ARM_CRYPTO_SUPPORT */
|
|
|
|
struct RIJNDAEL_context_s;
|
|
|
|
typedef unsigned int (*rijndael_cryptfn_t)(const struct RIJNDAEL_context_s *ctx,
|
|
unsigned char *bx,
|
|
const unsigned char *ax);
|
|
typedef void (*rijndael_prefetchfn_t)(void);
|
|
|
|
/* Our context object. */
|
|
typedef struct RIJNDAEL_context_s
|
|
{
|
|
/* The first fields are the keyschedule arrays. This is so that
|
|
they are aligned on a 16 byte boundary if using gcc. This
|
|
alignment is required for the AES-NI code and a good idea in any
|
|
case. The alignment is guaranteed due to the way cipher.c
|
|
allocates the space for the context. The PROPERLY_ALIGNED_TYPE
|
|
hack is used to force a minimal alignment if not using gcc of if
|
|
the alignment requirement is higher that 16 bytes. */
|
|
union
|
|
{
|
|
PROPERLY_ALIGNED_TYPE dummy;
|
|
byte keyschedule[MAXROUNDS+1][4][4];
|
|
u32 keyschedule32[MAXROUNDS+1][4];
|
|
#ifdef USE_PADLOCK
|
|
/* The key as passed to the padlock engine. It is only used if
|
|
the padlock engine is used (USE_PADLOCK, below). */
|
|
unsigned char padlock_key[16] __attribute__ ((aligned (16)));
|
|
#endif /*USE_PADLOCK*/
|
|
} u1;
|
|
union
|
|
{
|
|
PROPERLY_ALIGNED_TYPE dummy;
|
|
byte keyschedule[MAXROUNDS+1][4][4];
|
|
u32 keyschedule32[MAXROUNDS+1][4];
|
|
} u2;
|
|
int rounds; /* Key-length-dependent number of rounds. */
|
|
unsigned int decryption_prepared:1; /* The decryption key schedule is available. */
|
|
#ifdef USE_PADLOCK
|
|
unsigned int use_padlock:1; /* Padlock shall be used. */
|
|
#endif /*USE_PADLOCK*/
|
|
#ifdef USE_AESNI
|
|
unsigned int use_aesni:1; /* AES-NI shall be used. */
|
|
#endif /*USE_AESNI*/
|
|
#ifdef USE_SSSE3
|
|
unsigned int use_ssse3:1; /* SSSE3 shall be used. */
|
|
#endif /*USE_SSSE3*/
|
|
#ifdef USE_ARM_CE
|
|
unsigned int use_arm_ce:1; /* ARMv8 CE shall be used. */
|
|
#endif /*USE_ARM_CE*/
|
|
rijndael_cryptfn_t encrypt_fn;
|
|
rijndael_cryptfn_t decrypt_fn;
|
|
rijndael_prefetchfn_t prefetch_enc_fn;
|
|
rijndael_prefetchfn_t prefetch_dec_fn;
|
|
} RIJNDAEL_context ATTR_ALIGNED_16;
|
|
|
|
/* Macros defining alias for the keyschedules. */
|
|
#define keyschenc u1.keyschedule
|
|
#define keyschenc32 u1.keyschedule32
|
|
#define keyschdec u2.keyschedule
|
|
#define keyschdec32 u2.keyschedule32
|
|
#define padlockkey u1.padlock_key
|
|
|
|
#endif /* G10_RIJNDAEL_INTERNAL_H */
|