Messages in this thread Patch in this message | | | From | Andrei Botila <> | Subject | [PATCH 22/22] crypto: vmx - add check for xts input length equal to zero | Date | Fri, 7 Aug 2020 19:20:10 +0300 |
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From: Andrei Botila <andrei.botila@nxp.com>
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: "Breno Leitão" <leitao@debian.org> Cc: Nayna Jain <nayna@linux.ibm.com> Cc: Paulo Flabiano Smorigo <pfsmorigo@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrei Botila <andrei.botila@nxp.com> --- drivers/crypto/vmx/aes_xts.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/crypto/vmx/aes_xts.c b/drivers/crypto/vmx/aes_xts.c index 9fee1b1532a4..33107c9e2656 100644 --- a/drivers/crypto/vmx/aes_xts.c +++ b/drivers/crypto/vmx/aes_xts.c @@ -84,6 +84,9 @@ static int p8_aes_xts_crypt(struct skcipher_request *req, int enc) u8 tweak[AES_BLOCK_SIZE]; int ret; + if (!req->cryptlen) + return 0; + if (req->cryptlen < AES_BLOCK_SIZE) return -EINVAL; -- 2.17.1
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