linux-kernel - [RFC PATCH HBK: 3/8] sk_cipher: checking for hw bound operation

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Date:   Mon,  5 Sep 2022 20:06:26 +0530
From:   Pankaj Gupta <pankaj.gupta@....com>
To:     gaurav.jain@....com, sahil.malhotra@....com,
        kshitiz.varshney@....com, horia.geanta@....com,
        linux-kernel@...r.kernel.org, V.Sethi@....com
Cc:     Pankaj Gupta <pankaj.gupta@....com>
Subject: [RFC PATCH HBK: 3/8] sk_cipher: checking for hw bound operation

Checking for hw bound key. If yes,
 - skipping the key-length validation, against the valid min-max range.

Signed-off-by: Pankaj Gupta <pankaj.gupta@....com>
---
 crypto/skcipher.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index 418211180cee..0f2d0228d73e 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c
@@ -598,7 +598,8 @@ int crypto_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
 	unsigned long alignmask = crypto_skcipher_alignmask(tfm);
 	int err;
 
-	if (keylen < cipher->min_keysize || keylen > cipher->max_keysize)
+	if ((!tfm->base.is_hbk)
+	    && (keylen < cipher->min_keysize || keylen > cipher->max_keysize))
 		return -EINVAL;
 
 	if ((unsigned long)key & alignmask)
-- 
2.17.1