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-rw-r--r--crypto/shash.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/crypto/shash.c b/crypto/shash.c
index 23e05a1e9038..14a3b707a31f 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -172,19 +172,15 @@ int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
}
EXPORT_SYMBOL_GPL(crypto_shash_digest);
-int crypto_shash_import(struct shash_desc *desc, const u8 *in)
+static int shash_no_export(struct shash_desc *desc, void *out)
{
- struct crypto_shash *tfm = desc->tfm;
- struct shash_alg *alg = crypto_shash_alg(tfm);
-
- memcpy(shash_desc_ctx(desc), in, crypto_shash_descsize(tfm));
-
- if (alg->reinit)
- return alg->reinit(desc);
+ return -ENOSYS;
+}
- return 0;
+static int shash_no_import(struct shash_desc *desc, const void *in)
+{
+ return -ENOSYS;
}
-EXPORT_SYMBOL_GPL(crypto_shash_import);
static int shash_async_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
@@ -484,12 +480,19 @@ static int shash_prepare_alg(struct shash_alg *alg)
struct crypto_alg *base = &alg->base;
if (alg->digestsize > PAGE_SIZE / 8 ||
- alg->descsize > PAGE_SIZE / 8)
+ alg->descsize > PAGE_SIZE / 8 ||
+ alg->statesize > PAGE_SIZE / 8)
return -EINVAL;
base->cra_type = &crypto_shash_type;
base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
base->cra_flags |= CRYPTO_ALG_TYPE_SHASH;
+
+ if (!alg->import)
+ alg->import = shash_no_import;
+ if (!alg->export)
+ alg->export = shash_no_export;
+
return 0;
}