1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 22729bb42SJoachim Fritschi #ifndef _CRYPTO_TWOFISH_H 32729bb42SJoachim Fritschi #define _CRYPTO_TWOFISH_H 42729bb42SJoachim Fritschi 52729bb42SJoachim Fritschi #include <linux/types.h> 62729bb42SJoachim Fritschi 72729bb42SJoachim Fritschi #define TF_MIN_KEY_SIZE 16 82729bb42SJoachim Fritschi #define TF_MAX_KEY_SIZE 32 92729bb42SJoachim Fritschi #define TF_BLOCK_SIZE 16 102729bb42SJoachim Fritschi 112729bb42SJoachim Fritschi struct crypto_tfm; 122729bb42SJoachim Fritschi 132729bb42SJoachim Fritschi /* Structure for an expanded Twofish key. s contains the key-dependent 142729bb42SJoachim Fritschi * S-boxes composed with the MDS matrix; w contains the eight "whitening" 152729bb42SJoachim Fritschi * subkeys, K[0] through K[7]. k holds the remaining, "round" subkeys. Note 162729bb42SJoachim Fritschi * that k[i] corresponds to what the Twofish paper calls K[i+8]. */ 172729bb42SJoachim Fritschi struct twofish_ctx { 182729bb42SJoachim Fritschi u32 s[4][256], w[8], k[32]; 192729bb42SJoachim Fritschi }; 202729bb42SJoachim Fritschi 2181559f9aSJussi Kivilinna int __twofish_setkey(struct twofish_ctx *ctx, const u8 *key, 22674f368aSEric Biggers unsigned int key_len); 23560c06aeSHerbert Xu int twofish_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len); 242729bb42SJoachim Fritschi 252729bb42SJoachim Fritschi #endif 26