[linux-2.6-block.git] / include / crypto / xts.h

#ifndef _CRYPTO_XTS_H
#define _CRYPTO_XTS_H

#include <crypto/b128ops.h>

struct scatterlist;
struct blkcipher_desc;

#define XTS_BLOCK_SIZE 16

struct xts_crypt_req {
	be128 *tbuf;
	unsigned int tbuflen;

	void *tweak_ctx;
	void (*tweak_fn)(void *ctx, u8* dst, const u8* src);
	void *crypt_ctx;
	void (*crypt_fn)(void *ctx, u8 *blks, unsigned int nbytes);
};

#define XTS_TWEAK_CAST(x) ((void (*)(void *, u8*, const u8*))(x))

int xts_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
	      struct scatterlist *src, unsigned int nbytes,
	      struct xts_crypt_req *req);

#endif  /* _CRYPTO_XTS_H */
Commit	Line	Data
ce004556 JK	1	#ifndef _CRYPTO_XTS_H
	2	#define _CRYPTO_XTS_H
	3
	4	#include <crypto/b128ops.h>
	5
	6	struct scatterlist;
	7	struct blkcipher_desc;
	8
	9	#define XTS_BLOCK_SIZE 16
	10
	11	struct xts_crypt_req {
	12	be128 *tbuf;
	13	unsigned int tbuflen;
	14
	15	void *tweak_ctx;
	16	void (tweak_fn)(void ctx, u8* dst, const u8* src);
	17	void *crypt_ctx;
	18	void (crypt_fn)(void ctx, u8 *blks, unsigned int nbytes);
	19	};
	20
	21	#define XTS_TWEAK_CAST(x) ((void ()(void , u8, const u8))(x))
	22
	23	int xts_crypt(struct blkcipher_desc desc, struct scatterlist dst,
	24	struct scatterlist *src, unsigned int nbytes,
	25	struct xts_crypt_req *req);
	26
	27	#endif /* _CRYPTO_XTS_H */