1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Common values for AES algorithms 4 */ 5 6 #ifndef _CRYPTO_AES_H 7 #define _CRYPTO_AES_H 8 9 #include <linux/types.h> 10 #include <linux/crypto.h> 11 12 #define AES_MIN_KEY_SIZE 16 13 #define AES_MAX_KEY_SIZE 32 14 #define AES_KEYSIZE_128 16 15 #define AES_KEYSIZE_192 24 16 #define AES_KEYSIZE_256 32 17 #define AES_BLOCK_SIZE 16 18 #define AES_MAX_KEYLENGTH (15 * 16) 19 #define AES_MAX_KEYLENGTH_U32 (AES_MAX_KEYLENGTH / sizeof(u32)) 20 21 /* 22 * Please ensure that the first two fields are 16-byte aligned 23 * relative to the start of the structure, i.e., don't move them! 24 */ 25 struct crypto_aes_ctx { 26 u32 key_enc[AES_MAX_KEYLENGTH_U32]; 27 u32 key_dec[AES_MAX_KEYLENGTH_U32]; 28 u32 key_length; 29 }; 30 31 extern const u32 crypto_ft_tab[4][256] ____cacheline_aligned; 32 extern const u32 crypto_fl_tab[4][256] ____cacheline_aligned; 33 extern const u32 crypto_it_tab[4][256] ____cacheline_aligned; 34 extern const u32 crypto_il_tab[4][256] ____cacheline_aligned; 35 36 int crypto_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, 37 unsigned int key_len); 38 int crypto_aes_expand_key(struct crypto_aes_ctx *ctx, const u8 *in_key, 39 unsigned int key_len); 40 #endif 41