linux-kernel - [RFC PATCH HBK: 2/8] hw-bound-key: flag-is

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Date:   Tue,  6 Sep 2022 12:21:51 +0530
From:   Pankaj Gupta <pankaj.gupta@....com>
To:     jarkko@...nel.org, a.fatoum@...gutronix.de, Jason@...c4.com,
        jejb@...ux.ibm.com, zohar@...ux.ibm.com, dhowells@...hat.com,
        sumit.garg@...aro.org, david@...ma-star.at, michael@...le.cc,
        john.ernberg@...ia.se, jmorris@...ei.org, serge@...lyn.com,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        j.luebbe@...gutronix.de, ebiggers@...nel.org, richard@....at,
        keyrings@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org, sahil.malhotra@....com,
        kshitiz.varshney@....com, horia.geanta@....com,
        pankaj.gupta@....com, V.Sethi@....com
Subject: [RFC PATCH HBK: 2/8] hw-bound-key: flag-is_hbk added to the tfm

Consumer of the kernel crypto api, after allocating
the transformation, sets this flag based on the basis
of the type of key consumer has. This helps:

- This helps to influence the core processing logic
  for the encapsulated algorithm.
- This flag is set by the consumer after allocating
  the tfm and before calling the function crypto_xxx_setkey().

Signed-off-by: Pankaj Gupta <pankaj.gupta@....com>
---
 include/linux/crypto.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 2324ab6f1846..b4fa83ca87bd 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -639,6 +639,8 @@ struct crypto_tfm {
 
 	u32 crt_flags;
 
+	unsigned int is_hbk;
+
 	int node;
 	
 	void (*exit)(struct crypto_tfm *tfm);
-- 
2.17.1