| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 |