mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-25 08:58:14 +00:00
174 lines
5.0 KiB
C
174 lines
5.0 KiB
C
/*
|
|
---------------------------------------------------------------------------
|
|
Copyright (c) 1998-2013, Brian Gladman, Worcester, UK. All rights reserved.
|
|
|
|
The redistribution and use of this software (with or without changes)
|
|
is allowed without the payment of fees or royalties provided that:
|
|
|
|
source code distributions include the above copyright notice, this
|
|
list of conditions and the following disclaimer;
|
|
|
|
binary distributions include the above copyright notice, this list
|
|
of conditions and the following disclaimer in their documentation.
|
|
|
|
This software is provided 'as is' with no explicit or implied warranties
|
|
in respect of its operation, including, but not limited to, correctness
|
|
and fitness for purpose.
|
|
---------------------------------------------------------------------------
|
|
Issue Date: 20/12/2007
|
|
|
|
This file contains the code for declaring the tables needed to implement
|
|
AES. The file aesopt.h is assumed to be included before this header file.
|
|
If there are no global variables, the definitions here can be used to put
|
|
the AES tables in a structure so that a pointer can then be added to the
|
|
AES context to pass them to the AES routines that need them. If this
|
|
facility is used, the calling program has to ensure that this pointer is
|
|
managed appropriately. In particular, the value of the t_dec(in,it) item
|
|
in the table structure must be set to zero in order to ensure that the
|
|
tables are initialised. In practice the three code sequences in aeskey.c
|
|
that control the calls to aes_init() and the aes_init() routine itself will
|
|
have to be changed for a specific implementation. If global variables are
|
|
available it will generally be preferable to use them with the precomputed
|
|
STATIC_TABLES option that uses static global tables.
|
|
|
|
The following defines can be used to control the way the tables
|
|
are defined, initialised and used in embedded environments that
|
|
require special features for these purposes
|
|
|
|
the 't_dec' construction is used to declare fixed table arrays
|
|
the 't_set' construction is used to set fixed table values
|
|
the 't_use' construction is used to access fixed table values
|
|
|
|
256 byte tables:
|
|
|
|
t_xxx(s,box) => forward S box
|
|
t_xxx(i,box) => inverse S box
|
|
|
|
256 32-bit word OR 4 x 256 32-bit word tables:
|
|
|
|
t_xxx(f,n) => forward normal round
|
|
t_xxx(f,l) => forward last round
|
|
t_xxx(i,n) => inverse normal round
|
|
t_xxx(i,l) => inverse last round
|
|
t_xxx(l,s) => key schedule table
|
|
t_xxx(i,m) => key schedule table
|
|
|
|
Other variables and tables:
|
|
|
|
t_xxx(r,c) => the rcon table
|
|
*/
|
|
|
|
#if !defined( _AESTAB_H )
|
|
#define _AESTAB_H
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define t_dec(m,n) t_##m##n
|
|
#define t_set(m,n) t_##m##n
|
|
#define t_use(m,n) t_##m##n
|
|
|
|
#if defined(STATIC_TABLES)
|
|
# if !defined( __GNUC__ ) && (defined( __MSDOS__ ) || defined( __WIN16__ ))
|
|
/* make tables far data to avoid using too much DGROUP space (PG) */
|
|
# define CONST const far
|
|
# else
|
|
# define CONST const
|
|
# endif
|
|
#else
|
|
# define CONST
|
|
#endif
|
|
|
|
#if defined(DO_TABLES)
|
|
# define EXTERN
|
|
#else
|
|
# define EXTERN extern
|
|
#endif
|
|
|
|
#if defined(_MSC_VER) && defined(TABLE_ALIGN)
|
|
#define ALIGN __declspec(align(TABLE_ALIGN))
|
|
#else
|
|
#define ALIGN
|
|
#endif
|
|
|
|
#if defined( __WATCOMC__ ) && ( __WATCOMC__ >= 1100 )
|
|
# define XP_DIR __cdecl
|
|
#else
|
|
# define XP_DIR
|
|
#endif
|
|
|
|
#if defined(DO_TABLES) && defined(STATIC_TABLES)
|
|
#define d_1(t,n,b,e) EXTERN ALIGN CONST XP_DIR t n[256] = b(e)
|
|
#define d_4(t,n,b,e,f,g,h) EXTERN ALIGN CONST XP_DIR t n[4][256] = { b(e), b(f), b(g), b(h) }
|
|
EXTERN ALIGN CONST uint32_t t_dec(r,c)[RC_LENGTH] = rc_data(w0);
|
|
#else
|
|
#define d_1(t,n,b,e) EXTERN ALIGN CONST XP_DIR t n[256]
|
|
#define d_4(t,n,b,e,f,g,h) EXTERN ALIGN CONST XP_DIR t n[4][256]
|
|
EXTERN ALIGN CONST uint32_t t_dec(r,c)[RC_LENGTH];
|
|
#endif
|
|
|
|
#if defined( SBX_SET )
|
|
d_1(uint8_t, t_dec(s,box), sb_data, h0);
|
|
#endif
|
|
#if defined( ISB_SET )
|
|
d_1(uint8_t, t_dec(i,box), isb_data, h0);
|
|
#endif
|
|
|
|
#if defined( FT1_SET )
|
|
d_1(uint32_t, t_dec(f,n), sb_data, u0);
|
|
#endif
|
|
#if defined( FT4_SET )
|
|
d_4(uint32_t, t_dec(f,n), sb_data, u0, u1, u2, u3);
|
|
#endif
|
|
|
|
#if defined( FL1_SET )
|
|
d_1(uint32_t, t_dec(f,l), sb_data, w0);
|
|
#endif
|
|
#if defined( FL4_SET )
|
|
d_4(uint32_t, t_dec(f,l), sb_data, w0, w1, w2, w3);
|
|
#endif
|
|
|
|
#if defined( IT1_SET )
|
|
d_1(uint32_t, t_dec(i,n), isb_data, v0);
|
|
#endif
|
|
#if defined( IT4_SET )
|
|
d_4(uint32_t, t_dec(i,n), isb_data, v0, v1, v2, v3);
|
|
#endif
|
|
|
|
#if defined( IL1_SET )
|
|
d_1(uint32_t, t_dec(i,l), isb_data, w0);
|
|
#endif
|
|
#if defined( IL4_SET )
|
|
d_4(uint32_t, t_dec(i,l), isb_data, w0, w1, w2, w3);
|
|
#endif
|
|
|
|
#if defined( LS1_SET )
|
|
#if defined( FL1_SET )
|
|
#undef LS1_SET
|
|
#else
|
|
d_1(uint32_t, t_dec(l,s), sb_data, w0);
|
|
#endif
|
|
#endif
|
|
|
|
#if defined( LS4_SET )
|
|
#if defined( FL4_SET )
|
|
#undef LS4_SET
|
|
#else
|
|
d_4(uint32_t, t_dec(l,s), sb_data, w0, w1, w2, w3);
|
|
#endif
|
|
#endif
|
|
|
|
#if defined( IM1_SET )
|
|
d_1(uint32_t, t_dec(i,m), mm_data, v0);
|
|
#endif
|
|
#if defined( IM4_SET )
|
|
d_4(uint32_t, t_dec(i,m), mm_data, v0, v1, v2, v3);
|
|
#endif
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|