1 #ifndef _CRYPTO_CAST5_H 2 #define _CRYPTO_CAST5_H 3 4 #include <linux/types.h> 5 #include <linux/crypto.h> 6 7 #define CAST5_BLOCK_SIZE 8 8 #define CAST5_MIN_KEY_SIZE 5 9 #define CAST5_MAX_KEY_SIZE 16 10 11 struct cast5_ctx { 12 u32 Km[16]; 13 u8 Kr[16]; 14 int rr; /* rr ? rounds = 12 : rounds = 16; (rfc 2144) */ 15 }; 16 17 int cast5_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen); 18 19 void __cast5_encrypt(struct cast5_ctx *ctx, u8 *dst, const u8 *src); 20 void __cast5_decrypt(struct cast5_ctx *ctx, u8 *dst, const u8 *src); 21 22 extern const u32 cast5_s1[256]; 23 extern const u32 cast5_s2[256]; 24 extern const u32 cast5_s3[256]; 25 extern const u32 cast5_s4[256]; 26 27 #endif 28