/* 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 . */ #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 or 64 bytes. */ #ifdef HAVE_GCC_ATTRIBUTE_ALIGNED # define ATTR_ALIGNED_16 __attribute__ ((aligned (16))) # define ATTR_ALIGNED_64 __attribute__ ((aligned (64))) #else # define ATTR_ALIGNED_16 # define ATTR_ALIGNED_64 #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 */ /* USE_PPC_CRYPTO indicates whether to enable PowerPC vector crypto * accelerated code. USE_PPC_CRYPTO_WITH_PPC9LE indicates whether to * enable POWER9 optimized variant. */ #undef USE_PPC_CRYPTO #undef USE_PPC_CRYPTO_WITH_PPC9LE #ifdef ENABLE_PPC_CRYPTO_SUPPORT # if defined(HAVE_COMPATIBLE_CC_PPC_ALTIVEC) && \ defined(HAVE_GCC_INLINE_ASM_PPC_ALTIVEC) # if __GNUC__ >= 4 # define USE_PPC_CRYPTO 1 # if !defined(WORDS_BIGENDIAN) && defined(HAVE_GCC_INLINE_ASM_PPC_ARCH_3_00) # define USE_PPC_CRYPTO_WITH_PPC9LE 1 # endif # endif # endif #endif /* ENABLE_PPC_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. */ unsigned int use_avx:1; /* AVX shall be used. */ unsigned int use_avx2:1; /* AVX2 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*/ #ifdef USE_PPC_CRYPTO unsigned int use_ppc_crypto:1; /* PowerPC crypto shall be used. */ #endif /*USE_PPC_CRYPTO*/ #ifdef USE_PPC_CRYPTO_WITH_PPC9LE unsigned int use_ppc9le_crypto:1; /* POWER9 LE crypto shall be used. */ #endif 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 */