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
  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