From: Ard Biesheuvel <ardb@kernel.org>
To: linux-crypto@vger.kernel.org
Cc: Ard Biesheuvel <ardb@kernel.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
Eric Biggers <ebiggers@google.com>,
linux-arm-kernel@lists.infradead.org,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Gonglei <arei.gonglei@huawei.com>,
virtualization@lists.linux-foundation.org
Subject: [PATCH v3 02/29] crypto: virtio - deal with unsupported input sizes
Date: Tue, 5 Nov 2019 14:27:59 +0100 [thread overview]
Message-ID: <20191105132826.1838-3-ardb@kernel.org> (raw)
In-Reply-To: <20191105132826.1838-1-ardb@kernel.org>
Return -EINVAL for input sizes that are not a multiple of the AES
block size, since they are not supported by our CBC chaining mode.
While at it, remove the pr_err() that reports unsupported key sizes
being used: we shouldn't spam the kernel log with that.
Fixes: dbaf0624ffa5 ("crypto: add virtio-crypto driver")
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Gonglei <arei.gonglei@huawei.com>
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
drivers/crypto/virtio/virtio_crypto_algs.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/virtio/virtio_crypto_algs.c b/drivers/crypto/virtio/virtio_crypto_algs.c
index 65ec10800137..82b316b2f537 100644
--- a/drivers/crypto/virtio/virtio_crypto_algs.c
+++ b/drivers/crypto/virtio/virtio_crypto_algs.c
@@ -105,8 +105,6 @@ virtio_crypto_alg_validate_key(int key_len, uint32_t *alg)
*alg = VIRTIO_CRYPTO_CIPHER_AES_CBC;
break;
default:
- pr_err("virtio_crypto: Unsupported key length: %d\n",
- key_len);
return -EINVAL;
}
return 0;
@@ -489,6 +487,11 @@ static int virtio_crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
/* Use the first data virtqueue as default */
struct data_queue *data_vq = &vcrypto->data_vq[0];
+ if (!req->nbytes)
+ return 0;
+ if (req->nbytes % AES_BLOCK_SIZE)
+ return -EINVAL;
+
vc_req->dataq = data_vq;
vc_req->alg_cb = virtio_crypto_dataq_sym_callback;
vc_sym_req->ablkcipher_ctx = ctx;
@@ -509,6 +512,11 @@ static int virtio_crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
/* Use the first data virtqueue as default */
struct data_queue *data_vq = &vcrypto->data_vq[0];
+ if (!req->nbytes)
+ return 0;
+ if (req->nbytes % AES_BLOCK_SIZE)
+ return -EINVAL;
+
vc_req->dataq = data_vq;
vc_req->alg_cb = virtio_crypto_dataq_sym_callback;
vc_sym_req->ablkcipher_ctx = ctx;
--
2.20.1
next prev parent reply other threads:[~2019-11-05 13:28 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-05 13:27 [PATCH v3 00/29] crypto: convert h/w accelerator drivers to skcipher API Ard Biesheuvel
2019-11-05 13:27 ` [PATCH v3 01/29] crypto: virtio - implement missing support for output IVs Ard Biesheuvel
2019-11-05 13:27 ` Ard Biesheuvel [this message]
2019-11-05 13:28 ` [PATCH v3 03/29] crypto: virtio - switch to skcipher API Ard Biesheuvel
2019-11-05 17:32 ` Eric Biggers
2019-11-05 13:28 ` [PATCH v3 04/29] crypto: ccp - switch from ablkcipher to skcipher Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 05/29] crypto: omap - switch to skcipher API Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 06/29] crypto: ux500 " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 07/29] crypto: s5p " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 08/29] crypto: atmel-aes " Ard Biesheuvel
2019-11-09 6:23 ` Tudor.Ambarus
2019-11-05 13:28 ` [PATCH v3 09/29] crypto: atmel-tdes " Ard Biesheuvel
2019-11-09 6:17 ` Tudor.Ambarus
2019-11-05 13:28 ` [PATCH v3 10/29] crypto: bcm-spu " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 11/29] crypto: nitrox - remove cra_type reference to ablkcipher Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 12/29] crypto: cavium/cpt - switch to skcipher API Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 13/29] crypto: chelsio " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 14/29] crypto: hifn " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 15/29] crypto: ixp4xx " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 16/29] crypto: mxs " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 17/29] crypto: mediatek " Ard Biesheuvel
2019-11-10 18:31 ` Matthias Brugger
2019-11-05 13:28 ` [PATCH v3 18/29] crypto: sahara " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 19/29] crypto: picoxcell " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 20/29] crypto: qce " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 21/29] crypto: stm32 " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 22/29] crypto: niagara2 " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 23/29] crypto: rockchip " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 24/29] crypto: talitos " Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 25/29] crypto: qat " Ard Biesheuvel
2019-11-07 11:26 ` Giovanni Cabiddu
2019-11-07 11:34 ` Ard Biesheuvel
2019-11-08 9:14 ` Herbert Xu
2019-11-05 13:28 ` [PATCH v3 26/29] crypto: marvell/cesa - rename blkcipher to skcipher Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 27/29] crypto: nx - remove stale comment referring to the blkcipher walk API Ard Biesheuvel
2019-11-05 13:28 ` [PATCH v3 28/29] crypto: remove deprecated and unused ablkcipher support Ard Biesheuvel
2019-11-05 17:52 ` Eric Biggers
2019-11-06 4:03 ` Herbert Xu
2019-11-05 13:28 ` [PATCH v3 29/29] crypto: ccree - update a stale reference to ablkcipher Ard Biesheuvel
2019-11-06 6:24 ` Gilad Ben-Yossef
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