[PATCH 21/22] crypto: qce - add check for xts input length equal to zero
From: Andrei Botila <andrei.botila@oss.nxp.com>
Date: 2020-08-07 16:23:04
Also in:
linux-crypto, linux-s390, linuxppc-dev, lkml
Subsystem:
crypto api, qualcomm crypto drivers, the rest · Maintainers:
Herbert Xu, "David S. Miller", Thara Gopinath, 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. Signed-off-by: Andrei Botila <redacted> --- drivers/crypto/qce/skcipher.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/crypto/qce/skcipher.c b/drivers/crypto/qce/skcipher.c
index 5630c5addd28..887fd4dc9b43 100644
--- a/drivers/crypto/qce/skcipher.c
+++ b/drivers/crypto/qce/skcipher.c@@ -223,6 +223,9 @@ static int qce_skcipher_crypt(struct skcipher_request *req, int encrypt) int keylen; int ret; + if (!req->cryptlen && IS_XTS(rctx->flags)) + return 0; + rctx->flags = tmpl->alg_flags; rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT; keylen = IS_XTS(rctx->flags) ? ctx->enc_keylen >> 1 : ctx->enc_keylen;
--
2.17.1
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