Messages in this thread Patch in this message | | | From | Andrei Botila <> | Subject | [PATCH 08/22] crypto: x86/glue_helper - add check for xts input length equal to zero | Date | Fri, 7 Aug 2020 19:19:56 +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: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrei Botila <andrei.botila@nxp.com> --- arch/x86/crypto/glue_helper.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/x86/crypto/glue_helper.c b/arch/x86/crypto/glue_helper.c index d3d91a0abf88..cc5042c72910 100644 --- a/arch/x86/crypto/glue_helper.c +++ b/arch/x86/crypto/glue_helper.c @@ -275,6 +275,9 @@ int glue_xts_req_128bit(const struct common_glue_ctx *gctx, unsigned int nbytes, tail; int err; + if (!req->cryptlen) + return 0; + if (req->cryptlen < XTS_BLOCK_SIZE) return -EINVAL; -- 2.17.1
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