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TOMOYO Linux Cross Reference
Linux/include/crypto/aes.h

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  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];
 32 extern const u32 crypto_fl_tab[4][256];
 33 extern const u32 crypto_it_tab[4][256];
 34 extern const u32 crypto_il_tab[4][256];
 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 

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