12729bb42SJoachim Fritschi #ifndef _CRYPTO_TWOFISH_H 22729bb42SJoachim Fritschi #define _CRYPTO_TWOFISH_H 32729bb42SJoachim Fritschi 42729bb42SJoachim Fritschi #include <linux/types.h> 52729bb42SJoachim Fritschi 62729bb42SJoachim Fritschi #define TF_MIN_KEY_SIZE 16 72729bb42SJoachim Fritschi #define TF_MAX_KEY_SIZE 32 82729bb42SJoachim Fritschi #define TF_BLOCK_SIZE 16 92729bb42SJoachim Fritschi 102729bb42SJoachim Fritschi struct crypto_tfm; 112729bb42SJoachim Fritschi 122729bb42SJoachim Fritschi /* Structure for an expanded Twofish key. s contains the key-dependent 132729bb42SJoachim Fritschi * S-boxes composed with the MDS matrix; w contains the eight "whitening" 142729bb42SJoachim Fritschi * subkeys, K[0] through K[7]. k holds the remaining, "round" subkeys. Note 152729bb42SJoachim Fritschi * that k[i] corresponds to what the Twofish paper calls K[i+8]. */ 162729bb42SJoachim Fritschi struct twofish_ctx { 172729bb42SJoachim Fritschi u32 s[4][256], w[8], k[32]; 182729bb42SJoachim Fritschi }; 192729bb42SJoachim Fritschi 202729bb42SJoachim Fritschi int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, 212729bb42SJoachim Fritschi unsigned int key_len, u32 *flags); 222729bb42SJoachim Fritschi 232729bb42SJoachim Fritschi #endif 24