[PATCH 12/22] crypto: bcm - add check for xts input length equal to zero
From: Andrei Botila <andrei.botila@oss.nxp.com>
Date: 2020-08-07 16:22:58
Also in:
linux-crypto, linux-s390, linuxppc-dev, lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", 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. Cc: Zhang Shengju <redacted> Cc: Tang Bin <redacted> Signed-off-by: Andrei Botila <redacted> --- drivers/crypto/bcm/cipher.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/crypto/bcm/cipher.c b/drivers/crypto/bcm/cipher.c
index 8a7fa1ae1ade..8a6f225f4db7 100644
--- a/drivers/crypto/bcm/cipher.c
+++ b/drivers/crypto/bcm/cipher.c@@ -1754,6 +1754,9 @@ static int skcipher_enqueue(struct skcipher_request *req, bool encrypt) crypto_skcipher_ctx(crypto_skcipher_reqtfm(req)); int err; + if (!req->cryptlen && ctx->cipher.mode == CIPHER_MODE_XTS) + return 0; + flow_log("%s() enc:%u\n", __func__, encrypt); rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
--
2.17.1
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