crypto: sha1_generic - Add export/import support

This patch adds export/import support to sha1_generic.  The exported
type is defined by struct sha1_state, which is basically the entire
descriptor state of sha1_generic.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/crypto/sha.h b/include/crypto/sha.h
index c0ccc2b1a2d8..922a248bd04d 100644
--- a/include/crypto/sha.h
+++ b/include/crypto/sha.h
@@ -5,6 +5,8 @@
 #ifndef _CRYPTO_SHA_H
 #define _CRYPTO_SHA_H
 
+#include <linux/types.h>
+
 #define SHA1_DIGEST_SIZE        20
 #define SHA1_BLOCK_SIZE         64
 
@@ -62,4 +64,10 @@
 #define SHA512_H6       0x1f83d9abfb41bd6bULL
 #define SHA512_H7       0x5be0cd19137e2179ULL
 
+struct sha1_state {
+        u64 count;
+        u32 state[SHA1_DIGEST_SIZE / 4];
+        u8 buffer[SHA1_BLOCK_SIZE];
+};
+
 #endif