crypto: sha1 - implement base layer for SHA-1

To reduce the number of copies of boilerplate code throughout
the tree, this patch implements generic glue for the SHA-1
algorithm. This allows a specific arch or hardware implementation
to only implement the special handling that it needs.

The users need to supply an implementation of

  void (sha1_block_fn)(struct sha1_state *sst, u8 const *src, int blocks)

and pass it to the SHA-1 base functions. For easy casting between the
prototype above and existing block functions that take a 'u32 state[]'
as their first argument, the 'state' member of struct sha1_state is
moved to the base of the struct.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/crypto/sha.h b/include/crypto/sha.h
index 190f8a0e0242..a9aad8e63f43 100644
--- a/include/crypto/sha.h
+++ b/include/crypto/sha.h
@@ -65,8 +65,8 @@
 #define SHA512_H7	0x5be0cd19137e2179ULL
 
 struct sha1_state {
-	u64 count;
 	u32 state[SHA1_DIGEST_SIZE / 4];
+	u64 count;
 	u8 buffer[SHA1_BLOCK_SIZE];
 };