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/*
* Common values for AES algorithms
*/
#ifndef _CRYPTO_AES_H
#define _CRYPTO_AES_H
# include <stdint.h>
# include <string.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(uint32_t))
/*
* 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 {
uint32_t key_enc[AES_MAX_KEYLENGTH_U32];
uint32_t key_dec[AES_MAX_KEYLENGTH_U32];
uint32_t key_length;
};
extern const uint32_t crypto_ft_tab[4][256];
extern const uint32_t crypto_fl_tab[4][256];
extern const uint32_t crypto_it_tab[4][256];
extern const uint32_t crypto_il_tab[4][256];
int crypto_aes_expand_key(struct crypto_aes_ctx *ctx, const uint8_t * in_key,
unsigned int key_len);
int crypto_cbc_encrypt(const struct crypto_aes_ctx *ctx,
void *src, int nbytes, void *dst, void *iv);
#endif
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