crypto: sha256_generic - Add export/import support

[safe/jmp/linux-2.6] / crypto / ahash.c

diff --git a/crypto/ahash.c b/crypto/ahash.c
index 9f98956..f347637 100644 (file)
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -82,10 +82,11 @@ int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err)
        if (err)
                return err;
 
-       walk->offset = 0;
-
-       if (nbytes)
+       if (nbytes) {
+               walk->offset = 0;
+               walk->pg++;
                return hash_walk_next(walk);
+       }
 
        if (!walk->total)
                return 0;
@@ -162,6 +163,12 @@ static int ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
        return ahash->setkey(tfm, key, keylen);
 }
 
+static int ahash_nosetkey(struct crypto_ahash *tfm, const u8 *key,
+                         unsigned int keylen)
+{
+       return -ENOSYS;
+}
+
 int crypto_ahash_import(struct ahash_request *req, const u8 *in)
 {
        struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
@@ -194,7 +201,7 @@ static int crypto_init_ahash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
        crt->update = alg->update;
        crt->final  = alg->final;
        crt->digest = alg->digest;
-       crt->setkey = ahash_setkey;
+       crt->setkey = alg->setkey ? ahash_setkey : ahash_nosetkey;
        crt->digestsize = alg->digestsize;
 
        return 0;
@@ -208,7 +215,7 @@ static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
        seq_printf(m, "async        : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ?
                                             "yes" : "no");
        seq_printf(m, "blocksize    : %u\n", alg->cra_blocksize);
-       seq_printf(m, "digestsize   : %u\n", alg->cra_hash.digestsize);
+       seq_printf(m, "digestsize   : %u\n", alg->cra_ahash.digestsize);
 }
 
 const struct crypto_type crypto_ahash_type = {