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| author | Niels Möller <nisse@lysator.liu.se> | 2002-02-12 14:52:00 +0100 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2002-02-12 14:52:00 +0100 |
| commit | 97a2a0f1672ca3a237f4afee794da76626ddb6a5 (patch) | |
| tree | c9b806aea850a62ad56197c1cd8f9f9785dd39d2 /aes-internal.h | |
| parent | a3a636872726e033d9d29dfd250c2f1d5025ac5a (diff) | |
| download | nettle-97a2a0f1672ca3a237f4afee794da76626ddb6a5.tar.gz | |
* aes-internal.h (AES_SMALL): New macro.
Rev: src/nettle/aes-internal.h:1.3
Rev: src/nettle/aes-tables.c:1.3
Diffstat (limited to 'aes-internal.h')
| -rw-r--r-- | aes-internal.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/aes-internal.h b/aes-internal.h index 081f8864..79d34e44 100644 --- a/aes-internal.h +++ b/aes-internal.h @@ -28,6 +28,11 @@ #include "aes.h" +/* Define to use only small tables. */ +#ifndef AES_SMALL +# define AES_SMALL 1 +#endif + /* Macros */ #define ROTBYTE(x) (((x) >> 8) | (((x) & 0xff) << 24)) #define ROTRBYTE(x) (((x) << 8) | (((x) >> 24) & 0xff)) @@ -37,13 +42,20 @@ ((box)[(((x) >> 24) & 0xff)] << 24)) /* Don't pollute global namespace too much */ -#define dtbl _aes_dtbl +#if AES_SMALL +# define dtbl _aes_dtbl_small +# define _AES_TABLE_SIZE 1 +#else +# define dtbl _aes_dtbl +# define _AES_TABLE_SIZE 4 +#endif + #define itbl _aes_itbl #define sbox _aes_sbox #define isbox _aes_isbox /* Internal tables */ -extern const uint32_t dtbl[4][0x100]; +extern const uint32_t dtbl[_AES_TABLE_SIZE][0x100]; extern const uint32_t itbl[]; extern const uint8_t sbox[0x100]; extern const uint8_t isbox[0x100]; |