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 10 struct 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]. */ 16 struct twofish_ctx { 17 u32 s[4][256], w[8], k[32]; 18 }; 19 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); 23 24 #endif 25