renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 13:43:55 +08:00
Code

crypto: mediatek - Add empty messages check in GCM mode

Browse Source 
Currently, empty messages are not supported in GCM mode, hence add
a check to prevent producing incorrect results.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ryder Lee 2017-08-22 15:53:39 +08:00 committed by Herbert Xu
parent b7e2753040
commit e47270665b
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/crypto/mediatek/mtk-aes.c
View File

@ -928,8 +928,13 @@ static int mtk_aes_gcm_start(struct mtk_cryp *cryp, struct mtk_aes_rec *aes)
static int mtk_aes_gcm_crypt(struct aead_request *req, u64 mode) static int mtk_aes_gcm_crypt(struct aead_request *req, u64 mode)
{ {
struct mtk_aes_base_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req)); struct mtk_aes_base_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req));
struct mtk_aes_gcm_ctx *gctx = mtk_aes_gcm_ctx_cast(ctx);
struct mtk_aes_reqctx *rctx = aead_request_ctx(req); struct mtk_aes_reqctx *rctx = aead_request_ctx(req);
/* Empty messages are not supported yet */
if (!gctx->textlen && !req->assoclen)
return -EINVAL;
rctx->mode = AES_FLAGS_GCM | mode; rctx->mode = AES_FLAGS_GCM | mode;
return mtk_aes_handle_queue(ctx->cryp, !!(mode & AES_FLAGS_ENCRYPT), return mtk_aes_handle_queue(ctx->cryp, !!(mode & AES_FLAGS_ENCRYPT),