diff mbox series

[v2,4/4] crypto: sun8i-ss - use kfree_sensitive()

Message ID 20200827064402.7130-5-efremov@linux.com (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show
Series crypto: use kfree_sensitive() | expand

Commit Message

Denis Efremov (Oracle) Aug. 27, 2020, 6:44 a.m. UTC 
Use kfree_sensitive() instead of open-coding it.

Signed-off-by: Denis Efremov <efremov@linux.com>
---
 .../crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c   | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

Comments

Corentin Labbe Aug. 27, 2020, 2:41 p.m. UTC | #1 
On Thu, Aug 27, 2020 at 09:44:02AM +0300, Denis Efremov wrote:
> Use kfree_sensitive() instead of open-coding it.
> 
> Signed-off-by: Denis Efremov <efremov@linux.com>
> ---
>  .../crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c   | 15 +++------------
>  1 file changed, 3 insertions(+), 12 deletions(-)
> 

Acked-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>

Thanks
diff mbox series

Patch

diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
index 7b39b4495571..deb8b39a86db 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
@@ -368,10 +368,7 @@  void sun8i_ss_cipher_exit(struct crypto_tfm *tfm)
 {
 	struct sun8i_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm);
 
-	if (op->key) {
-		memzero_explicit(op->key, op->keylen);
-		kfree(op->key);
-	}
+	kfree_sensitive(op->key);
 	crypto_free_skcipher(op->fallback_tfm);
 	pm_runtime_put_sync(op->ss->dev);
 }
@@ -393,10 +390,7 @@  int sun8i_ss_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
 		dev_dbg(ss->dev, "ERROR: Invalid keylen %u\n", keylen);
 		return -EINVAL;
 	}
-	if (op->key) {
-		memzero_explicit(op->key, op->keylen);
-		kfree(op->key);
-	}
+	kfree_sensitive(op->key);
 	op->keylen = keylen;
 	op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
 	if (!op->key)
@@ -419,10 +413,7 @@  int sun8i_ss_des3_setkey(struct crypto_skcipher *tfm, const u8 *key,
 		return -EINVAL;
 	}
 
-	if (op->key) {
-		memzero_explicit(op->key, op->keylen);
-		kfree(op->key);
-	}
+	kfree_sensitive(op->key);
 	op->keylen = keylen;
 	op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
 	if (!op->key)