1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Common values for AES algorithms
9 #include <linux/types.h>
10 #include <linux/crypto.h>
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))
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!
25 struct crypto_aes_ctx {
26 u32 key_enc[AES_MAX_KEYLENGTH_U32];
27 u32 key_dec[AES_MAX_KEYLENGTH_U32];
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];
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);