|  | #ifndef _CRYPTO_CAST6_H | 
|  | #define _CRYPTO_CAST6_H | 
|  |  | 
|  | #include <linux/types.h> | 
|  | #include <linux/crypto.h> | 
|  | #include <crypto/cast_common.h> | 
|  |  | 
|  | #define CAST6_BLOCK_SIZE 16 | 
|  | #define CAST6_MIN_KEY_SIZE 16 | 
|  | #define CAST6_MAX_KEY_SIZE 32 | 
|  |  | 
|  | struct cast6_ctx { | 
|  | u32 Km[12][4]; | 
|  | u8 Kr[12][4]; | 
|  | }; | 
|  |  | 
|  | int __cast6_setkey(struct cast6_ctx *ctx, const u8 *key, | 
|  | unsigned int keylen, u32 *flags); | 
|  | int cast6_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen); | 
|  |  | 
|  | void __cast6_encrypt(struct cast6_ctx *ctx, u8 *dst, const u8 *src); | 
|  | void __cast6_decrypt(struct cast6_ctx *ctx, u8 *dst, const u8 *src); | 
|  |  | 
|  | #endif |