From ce0045561e1edb92e4a509eb433ff52d3afaa258 Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Wed, 9 Nov 2011 11:56:06 +0800 Subject: crypto: xts: add interface for parallelized cipher implementations Add xts_crypt() function that can be used by cipher implementations that can benefit from parallelized cipher operations. Signed-off-by: Jussi Kivilinna Signed-off-by: Herbert Xu --- include/crypto/xts.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/crypto/xts.h (limited to 'include/crypto') diff --git a/include/crypto/xts.h b/include/crypto/xts.h new file mode 100644 index 0000000..72c09eb --- /dev/null +++ b/include/crypto/xts.h @@ -0,0 +1,27 @@ +#ifndef _CRYPTO_XTS_H +#define _CRYPTO_XTS_H + +#include + +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 */ -- cgit v1.1