Messages in this thread Patch in this message | | | From | Andrei Botila <> | Subject | [PATCH 05/22] crypto: powerpc/aes-spe - add check for xts input length equal to zero | Date | Fri, 7 Aug 2020 19:19:53 +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: 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> --- arch/powerpc/crypto/aes-spe-glue.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/powerpc/crypto/aes-spe-glue.c b/arch/powerpc/crypto/aes-spe-glue.c index c2b23b69d7b1..f37d8bef322b 100644 --- a/arch/powerpc/crypto/aes-spe-glue.c +++ b/arch/powerpc/crypto/aes-spe-glue.c @@ -327,6 +327,9 @@ static int ppc_xts_encrypt(struct skcipher_request *req) u8 b[2][AES_BLOCK_SIZE]; int err; + if (!req->cryptlen) + return 0; + if (req->cryptlen < AES_BLOCK_SIZE) return -EINVAL; @@ -366,6 +369,9 @@ static int ppc_xts_decrypt(struct skcipher_request *req) le128 twk; int err; + if (!req->cryptlen) + return 0; + if (req->cryptlen < AES_BLOCK_SIZE) return -EINVAL; -- 2.17.1
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