/*
   * Common values for AES algorithms
   */
  
  #ifndef _CRYPTO_AES_H
  #define _CRYPTO_AES_H

  #include <linux/types.h>
  #include <linux/crypto.h>

  #define AES_MIN_KEY_SIZE	16
  #define AES_MAX_KEY_SIZE	32
  #define AES_KEYSIZE_128		16
  #define AES_KEYSIZE_192		24
  #define AES_KEYSIZE_256		32
  #define AES_BLOCK_SIZE		16

  #define AES_MAX_KEYLENGTH	(15 * 16)
  #define AES_MAX_KEYLENGTH_U32	(AES_MAX_KEYLENGTH / sizeof(u32))

  /*
   * Please ensure that the first two fields are 16-byte aligned
   * relative to the start of the structure, i.e., don't move them!
   */

  struct crypto_aes_ctx {

  	u32 key_enc[AES_MAX_KEYLENGTH_U32];
  	u32 key_dec[AES_MAX_KEYLENGTH_U32];

  	u32 key_length;

  };

  extern const u32 crypto_ft_tab[4][256];
  extern const u32 crypto_fl_tab[4][256];
  extern const u32 crypto_it_tab[4][256];
  extern const u32 crypto_il_tab[4][256];

  
  int crypto_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
  		unsigned int key_len);

  int crypto_aes_expand_key(struct crypto_aes_ctx *ctx, const u8 *in_key,
  		unsigned int key_len);

  #endif