1#ifndef _CRYPTO_XTS_H
2#define _CRYPTO_XTS_H
3
4#include <crypto/b128ops.h>
5
6struct scatterlist;
7struct blkcipher_desc;
8
9#define XTS_BLOCK_SIZE 16
10
11struct 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
23int 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 */
28