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