crypto: hisilicon/sec - fix auth key size error

mainline inclusion
from mainline-master
commit 45f5d017
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5MK7S
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=45f5d0176d84

----------------------------------------------------------------------

The authentication algorithm supports a maximum of 128-byte keys.
The allocated key memory is insufficient.

Fixes: 2f072d75 ("crypto: hisilicon - Add aead support on SEC2")
Signed-off-by: NKai Ye <yekai13@huawei.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NJiangshui Yang <yangjiangshui@h-partners.com>
Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/crypto/hisilicon/sec2/sec_crypto.c

@@ -620,7 +620,7 @@ static int sec_auth_init(struct sec_ctx *ctx)
 {
 	struct sec_auth_ctx *a_ctx = &ctx->a_ctx;
 
-	a_ctx->a_key = dma_alloc_coherent(ctx->dev, SEC_MAX_KEY_SIZE,
+	a_ctx->a_key = dma_alloc_coherent(ctx->dev, SEC_MAX_AKEY_SIZE,
 					  &a_ctx->a_key_dma, GFP_KERNEL);
 	if (!a_ctx->a_key)
 		return -ENOMEM;
@@ -632,8 +632,8 @@ static void sec_auth_uninit(struct sec_ctx *ctx)
 {
 	struct sec_auth_ctx *a_ctx = &ctx->a_ctx;
 
-	memzero_explicit(a_ctx->a_key, SEC_MAX_KEY_SIZE);
-	dma_free_coherent(ctx->dev, SEC_MAX_KEY_SIZE,
+	memzero_explicit(a_ctx->a_key, SEC_MAX_AKEY_SIZE);
+	dma_free_coherent(ctx->dev, SEC_MAX_AKEY_SIZE,
 			  a_ctx->a_key, a_ctx->a_key_dma);
 }
 

drivers/crypto/hisilicon/sec2/sec_crypto.h

@@ -7,6 +7,7 @@
 #define SEC_AIV_SIZE		12
 #define SEC_IV_SIZE		24
 #define SEC_MAX_KEY_SIZE	64
+#define SEC_MAX_AKEY_SIZE	128
 #define SEC_COMM_SCENE		0
 #define SEC_MIN_BLOCK_SZ	1