lkml.org 
[lkml]   [2020]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 22/22] crypto: vmx - add check for xts input length equal to zero
    Date
    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
    \
     
     \ /
      Last update: 2020-08-07 18:23    [W:4.047 / U:2.900 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site