include/crypto/aes.h

   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 struct crypto_aes_ctx {
  21         u32 key_length;
  22         u32 key_enc[AES_MAX_KEYLENGTH_U32];
  23         u32 key_dec[AES_MAX_KEYLENGTH_U32];
  24 };
  25
  26 extern const u32 crypto_ft_tab[4][256];
  27 extern const u32 crypto_fl_tab[4][256];
  28 extern const u32 crypto_it_tab[4][256];
  29 extern const u32 crypto_il_tab[4][256];
  30
  31 int crypto_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
  32                 unsigned int key_len);
  33 int crypto_aes_expand_key(struct crypto_aes_ctx *ctx, const u8 *in_key,
  34                 unsigned int key_len);
  35 #endif