lkml.org 
[lkml]   [2021]   [Aug]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 3/5] crypto: hisilicon/sec - fix the max length of AAD for the CCM mode
Date
Fix the maximum length of AAD for the CCM mode due to the hardware limited.

Signed-off-by: Kai Ye <yekai13@huawei.com>
---
drivers/crypto/hisilicon/sec2/sec_crypto.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c
index 890faf8..387fb3c 100644
--- a/drivers/crypto/hisilicon/sec2/sec_crypto.c
+++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c
@@ -63,6 +63,7 @@
#define SEC_AUTH_CIPHER 0x1
#define SEC_MAX_MAC_LEN 64
#define SEC_MAX_AAD_LEN 65535
+#define SEC_MAX_CCM_AAD_LEN 65279
#define SEC_TOTAL_MAC_SZ (SEC_MAX_MAC_LEN * QM_Q_DEPTH)

#define SEC_PBUF_SZ 512
@@ -2218,6 +2219,10 @@ static int sec_aead_spec_check(struct sec_ctx *ctx, struct sec_req *sreq)
}

if (c_mode == SEC_CMODE_CCM) {
+ if (unlikely(req->assoclen > SEC_MAX_CCM_AAD_LEN)) {
+ dev_err_ratelimited(dev, "CCM input aad parameter is too long!\n");
+ return -EINVAL;
+ }
ret = aead_iv_demension_check(req);
if (ret) {
dev_err(dev, "aead input iv param error!\n");
--
2.7.4
\
 
 \ /
  Last update: 2021-08-06 11:47    [W:0.045 / U:1.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site