Root/include/crypto/twofish.h

1#ifndef _CRYPTO_TWOFISH_H
2#define _CRYPTO_TWOFISH_H
3
4#include <linux/types.h>
5
6#define TF_MIN_KEY_SIZE 16
7#define TF_MAX_KEY_SIZE 32
8#define TF_BLOCK_SIZE 16
9
10struct crypto_tfm;
11
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]. */
16struct twofish_ctx {
17    u32 s[4][256], w[8], k[32];
18};
19
20int __twofish_setkey(struct twofish_ctx *ctx, const u8 *key,
21             unsigned int key_len, u32 *flags);
22int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len);
23
24#endif
25

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