include/crypto/xts.h

   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 */