From 7607bd8ff03b8af5af887931318cb2bb20361856 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 4 Oct 2007 15:24:05 +0800 Subject: [CRYPTO] blkcipher: Added blkcipher_walk_virt_block This patch adds the helper blkcipher_walk_virt_block which is similar to blkcipher_walk_virt but uses a supplied block size instead of the block size of the block cipher. This is useful for CTR where the block size is 1 but we still want to walk by the block size of the underlying cipher. Signed-off-by: Herbert Xu --- include/crypto/algapi.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/crypto') diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 4af72dc21202..b9b05d399d2b 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -91,6 +91,7 @@ struct blkcipher_walk { u8 *iv; int flags; + unsigned int blocksize; }; extern const struct crypto_type crypto_ablkcipher_type; @@ -129,6 +130,9 @@ int blkcipher_walk_virt(struct blkcipher_desc *desc, struct blkcipher_walk *walk); int blkcipher_walk_phys(struct blkcipher_desc *desc, struct blkcipher_walk *walk); +int blkcipher_walk_virt_block(struct blkcipher_desc *desc, + struct blkcipher_walk *walk, + unsigned int blocksize); static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm) { -- cgit v1.2.3-59-g8ed1b