[PATCH 01/22] crypto: arm/aes-ce - add check for xts input length equal to zero
From: Andrei Botila <andrei.botila@oss.nxp.com>
Date: 2020-08-07 16:23:28
Also in:
linux-crypto, linux-s390, linuxppc-dev, lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, 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: Russell King <linux@armlinux.org.uk> Signed-off-by: Andrei Botila <redacted> --- arch/arm/crypto/aes-ce-glue.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/arm/crypto/aes-ce-glue.c b/arch/arm/crypto/aes-ce-glue.c
index b668c97663ec..57a9cf7fe98a 100644
--- a/arch/arm/crypto/aes-ce-glue.c
+++ b/arch/arm/crypto/aes-ce-glue.c@@ -452,6 +452,9 @@ static int xts_encrypt(struct skcipher_request *req) struct scatterlist *src, *dst; struct skcipher_walk walk; + if (!req->cryptlen) + return 0; + if (req->cryptlen < AES_BLOCK_SIZE) return -EINVAL;
@@ -524,6 +527,9 @@ static int xts_decrypt(struct skcipher_request *req) struct scatterlist *src, *dst; struct skcipher_walk walk; + if (!req->cryptlen) + return 0; + if (req->cryptlen < AES_BLOCK_SIZE) return -EINVAL;
--
2.17.1
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