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authorJussi Kivilinna <jussi.kivilinna@mbnet.fi>2011-11-09 04:56:06 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2011-11-09 04:56:06 +0100
commitce0045561e1edb92e4a509eb433ff52d3afaa258 (patch)
tree78c8a6fcd82d966aca6a48d17c9063de34e224e9 /include/crypto
parentcrypto: xts - use blocksize constant (diff)
downloadlinux-ce0045561e1edb92e4a509eb433ff52d3afaa258.tar.xz
linux-ce0045561e1edb92e4a509eb433ff52d3afaa258.zip
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 <jussi.kivilinna@mbnet.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/xts.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/include/crypto/xts.h b/include/crypto/xts.h
new file mode 100644
index 000000000000..72c09eb56437
--- /dev/null
+++ b/include/crypto/xts.h
@@ -0,0 +1,27 @@
+#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 */