1 /* 2 * Common values for AES algorithms 3 */ 4 5 #ifndef _CRYPTO_AES_H 6 #define _CRYPTO_AES_H 7 8 #include <linux/types.h> 9 #include <linux/crypto.h> 10 11 #define AES_MIN_KEY_SIZE 16 12 #define AES_MAX_KEY_SIZE 32 13 #define AES_KEYSIZE_128 16 14 #define AES_KEYSIZE_192 24 15 #define AES_KEYSIZE_256 32 16 #define AES_BLOCK_SIZE 16 17 #define AES_MAX_KEYLENGTH (15 * 16) 18 #define AES_MAX_KEYLENGTH_U32 (AES_MAX_KEYLENGTH / sizeof(u32)) 19 20 /* 21 * Please ensure that the first two fields are 16-byte aligned 22 * relative to the start of the structure, i.e., don't move them! 23 */ 24 struct crypto_aes_ctx { 25 u32 key_enc[AES_MAX_KEYLENGTH_U32]; 26 u32 key_dec[AES_MAX_KEYLENGTH_U32]; 27 u32 key_length; 28 }; 29 30 extern const u32 crypto_ft_tab[4][256]; 31 extern const u32 crypto_fl_tab[4][256]; 32 extern const u32 crypto_it_tab[4][256]; 33 extern const u32 crypto_il_tab[4][256]; 34 35 int crypto_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, 36 unsigned int key_len); 37 int crypto_aes_expand_key(struct crypto_aes_ctx *ctx, const u8 *in_key, 38 unsigned int key_len); 39 #endif 40