[CRYPTO] sha1: Fixed off-by-64 bug in sha1_update

After a partial update, the done pointer is off to the right by 64 bytes.

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

diff --git a/crypto/sha1.c b/crypto/sha1.c
index 8048e2d..21571ed 100644 (file)
--- a/crypto/sha1.c
+++ b/crypto/sha1.c
@@ -61,8 +61,8 @@ static void sha1_update(void *ctx, const u8 *data, unsigned int len)
                u32 temp[SHA_WORKSPACE_WORDS];
 
                if (partial) {
-                       done = 64 - partial;
-                       memcpy(sctx->buffer + partial, data, done);
+                       done = -partial;
+                       memcpy(sctx->buffer + partial, data, done + 64);
                        src = sctx->buffer;
                }