1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _CRYPTO_TWOFISH_H
3 #define _CRYPTO_TWOFISH_H
5 #include <linux/types.h>
7 #define TF_MIN_KEY_SIZE 16
8 #define TF_MAX_KEY_SIZE 32
9 #define TF_BLOCK_SIZE 16
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]. */
18 u32 s
[4][256], w
[8], k
[32];
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
);