[PATCH 04/22] crypto: arm64/aes-neonbs - add check for xts input length equal to zero
From: Andrei Botila <andrei.botila@oss.nxp.com>
Date: 2020-08-07 16:21:59
Also in:
linux-arm-kernel, linux-crypto, linux-s390, lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, 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: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrei Botila <redacted> --- arch/arm64/crypto/aes-neonbs-glue.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/crypto/aes-neonbs-glue.c b/arch/arm64/crypto/aes-neonbs-glue.c
index fb507d569922..197bf24e7dae 100644
--- a/arch/arm64/crypto/aes-neonbs-glue.c
+++ b/arch/arm64/crypto/aes-neonbs-glue.c@@ -330,6 +330,9 @@ static int __xts_crypt(struct skcipher_request *req, bool encrypt, int first = 1; u8 *out, *in; + if (!req->cryptlen) + return 0; + if (req->cryptlen < AES_BLOCK_SIZE) return -EINVAL;
--
2.17.1