[PATCH v4 03/10] crypto: inside-secure/eip93 - clear the crypto_aes_ctx when done

[Thomas Huth <thuth@redhat.com>]

From: Thomas Huth <thuth@redhat.com>

Clear the crypto_aes_ctx structure via __cleanup(aes_zeroize_ctx)
when we're done with it to avoid that key data could leak on the
stack.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 drivers/crypto/inside-secure/eip93/eip93-aead.c   | 2 +-
 drivers/crypto/inside-secure/eip93/eip93-cipher.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/inside-secure/eip93/eip93-aead.c b/drivers/crypto/inside-secure/eip93/eip93-aead.c
index 2bbd0af7b0e0e..973cebef5df37 100644
--- a/drivers/crypto/inside-secure/eip93/eip93-aead.c
+++ b/drivers/crypto/inside-secure/eip93/eip93-aead.c
@@ -92,7 +92,7 @@ static int eip93_aead_setkey(struct crypto_aead *ctfm, const u8 *key,
 	struct crypto_tfm *tfm = crypto_aead_tfm(ctfm);
 	struct eip93_crypto_ctx *ctx = crypto_tfm_ctx(tfm);
 	struct crypto_authenc_keys keys;
-	struct crypto_aes_ctx aes;
+	struct crypto_aes_ctx aes __cleanup(aes_zeroize_ctx);
 	struct sa_record *sa_record = ctx->sa_record;
 	u32 nonce = 0;
 	int ret;
diff --git a/drivers/crypto/inside-secure/eip93/eip93-cipher.c b/drivers/crypto/inside-secure/eip93/eip93-cipher.c
index 4dd7ab7503e85..7051b99ee6235 100644
--- a/drivers/crypto/inside-secure/eip93/eip93-cipher.c
+++ b/drivers/crypto/inside-secure/eip93/eip93-cipher.c
@@ -116,7 +116,7 @@ static int eip93_skcipher_setkey(struct crypto_skcipher *ctfm, const u8 *key,
 	}
 
 	if (flags & EIP93_ALG_AES) {
-		struct crypto_aes_ctx aes;
+		struct crypto_aes_ctx aes __cleanup(aes_zeroize_ctx);
 
 		ctx->blksize = AES_BLOCK_SIZE;
 		ret = aes_expandkey(&aes, key, keylen);
-- 
2.55.0