crypto: arch - use crypto_memneq instead of memcmp

Replace remaining occurences (just as we did in crypto/) under arch/*/crypto/
that make use of memcmp() for comparing keys or authentication tags for
usage with crypto_memneq(). It can simply be used as a drop-in replacement
for the normal memcmp().

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: James Yonan <james@openvpn.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c
index bcca01c9989d..200f2a1b599d 100644
--- a/arch/s390/crypto/des_s390.c
+++ b/arch/s390/crypto/des_s390.c
@@ -237,9 +237,9 @@ static int des3_setkey(struct crypto_tfm *tfm, const u8 *key,
         struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
         u32 *flags = &tfm->crt_flags;
 
-        if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) &&
-            memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2],
-                   DES_KEY_SIZE)) &&
+        if (!(crypto_memneq(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) &&
+            crypto_memneq(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2],
+                          DES_KEY_SIZE)) &&
             (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
                 *flags |= CRYPTO_TFM_RES_WEAK_KEY;
                 return -EINVAL;