1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _CRYPTO_TWOFISH_H |
3 | #define _CRYPTO_TWOFISH_H |
4 | |
5 | #include <linux/types.h> |
6 | |
7 | #define TF_MIN_KEY_SIZE 16 |
8 | #define TF_MAX_KEY_SIZE 32 |
9 | #define TF_BLOCK_SIZE 16 |
10 | |
11 | struct crypto_tfm; |
12 | |
13 | /* Structure for an expanded Twofish key. s contains the key-dependent |
14 | * S-boxes composed with the MDS matrix; w contains the eight "whitening" |
15 | * subkeys, K[0] through K[7]. k holds the remaining, "round" subkeys. Note |
16 | * that k[i] corresponds to what the Twofish paper calls K[i+8]. */ |
17 | struct twofish_ctx { |
18 | u32 s[4][256], w[8], k[32]; |
19 | }; |
20 | |
21 | int __twofish_setkey(struct twofish_ctx *ctx, const u8 *key, |
22 | unsigned int key_len); |
23 | int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len); |
24 | |
25 | #endif |
26 | |