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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
89e12654 SS |
2 | /* |
3 | * Common values for AES algorithms | |
4 | */ | |
5 | ||
6 | #ifndef _CRYPTO_AES_H | |
7 | #define _CRYPTO_AES_H | |
8 | ||
96e82e45 SS |
9 | #include <linux/types.h> |
10 | #include <linux/crypto.h> | |
11 | ||
89e12654 SS |
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 | |
5427663f SS |
18 | #define AES_MAX_KEYLENGTH (15 * 16) |
19 | #define AES_MAX_KEYLENGTH_U32 (AES_MAX_KEYLENGTH / sizeof(u32)) | |
89e12654 | 20 | |
109568e1 HY |
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 | */ | |
96e82e45 | 25 | struct crypto_aes_ctx { |
5427663f SS |
26 | u32 key_enc[AES_MAX_KEYLENGTH_U32]; |
27 | u32 key_dec[AES_MAX_KEYLENGTH_U32]; | |
109568e1 | 28 | u32 key_length; |
96e82e45 SS |
29 | }; |
30 | ||
0ee4a969 HX |
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]; | |
96e82e45 SS |
35 | |
36 | int crypto_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, | |
37 | unsigned int key_len); | |
5427663f SS |
38 | int crypto_aes_expand_key(struct crypto_aes_ctx *ctx, const u8 *in_key, |
39 | unsigned int key_len); | |
89e12654 | 40 | #endif |