From fa59b92d299f2787e6bae1ff078ee0982e80211f Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Wed, 3 Jan 2018 11:16:24 -0800
Subject: [PATCH] crypto: mcryptd - pass through absence of ->setkey()
Git-commit: fa59b92d299f2787e6bae1ff078ee0982e80211f
Patch-mainline: v4.16-rc1
References: bsc#1051510
When the mcryptd template is used to wrap an unkeyed hash algorithm,
don't install a ->setkey() method to the mcryptd instance. This change
is necessary for mcryptd to keep working with unkeyed hash algorithms
once we start enforcing that ->setkey() is called when present.
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
crypto/mcryptd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/crypto/mcryptd.c
+++ b/crypto/mcryptd.c
@@ -535,7 +535,8 @@ static int mcryptd_create_hash(struct cr
inst->alg.finup = mcryptd_hash_finup_enqueue;
inst->alg.export = mcryptd_hash_export;
inst->alg.import = mcryptd_hash_import;
- inst->alg.setkey = mcryptd_hash_setkey;
+ if (crypto_hash_alg_has_setkey(halg))
+ inst->alg.setkey = mcryptd_hash_setkey;
inst->alg.digest = mcryptd_hash_digest_enqueue;
err = ahash_register_instance(tmpl, inst);