[PATCH 11/22] crypto: artpec6 - add check for xts input length equal to zero
From: Andrei Botila <andrei.botila@oss.nxp.com>
Date: 2020-08-07 16:22:21
Also in:
linux-arm-kernel, linux-crypto, linux-s390, lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
From: Andrei Botila <redacted> Standardize the way input lengths equal to 0 are handled in all skcipher algorithms. All the algorithms return 0 for input lengths equal to zero. Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Lars Persson <lars.persson@axis.com> Signed-off-by: Andrei Botila <redacted> --- drivers/crypto/axis/artpec6_crypto.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/crypto/axis/artpec6_crypto.c b/drivers/crypto/axis/artpec6_crypto.c
index 1a46eeddf082..243880c97629 100644
--- a/drivers/crypto/axis/artpec6_crypto.c
+++ b/drivers/crypto/axis/artpec6_crypto.c@@ -1090,6 +1090,9 @@ static int artpec6_crypto_encrypt(struct skcipher_request *req) void (*complete)(struct crypto_async_request *req); int ret; + if (!req->cryptlen) + return 0; + req_ctx = skcipher_request_ctx(req); switch (ctx->crypto_type) {
@@ -1135,6 +1138,9 @@ static int artpec6_crypto_decrypt(struct skcipher_request *req) struct artpec6_crypto_request_context *req_ctx = NULL; void (*complete)(struct crypto_async_request *req); + if (!req->cryptlen) + return 0; + req_ctx = skcipher_request_ctx(req); switch (ctx->crypto_type) {
--
2.17.1