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Date: Mon, 15 Apr 2024 22:18:07 +0300
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Cc: <linux-security-module@vger.kernel.org>, <linux-doc@vger.kernel.org>,
 <linux-kernel@vger.kernel.org>, <linux-kselftest@vger.kernel.org>,
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 <ppavlu@suse.com>, <petr.vorel@gmail.com>, <mzerqung@0pointer.de>,
 <kgold@linux.ibm.com>, "Roberto Sassu" <roberto.sassu@huawei.com>
Subject: Re: [PATCH v4 00/14] security: digest_cache LSM
From: "Jarkko Sakkinen" <jarkko@kernel.org>
To: "Roberto Sassu" <roberto.sassu@huaweicloud.com>, <corbet@lwn.net>,
 <paul@paul-moore.com>, <jmorris@namei.org>, <serge@hallyn.com>,
 <akpm@linux-foundation.org>, <shuah@kernel.org>,
 <mcoquelin.stm32@gmail.com>, <alexandre.torgue@foss.st.com>,
 <mic@digikod.net>
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References: <20240415142436.2545003-1-roberto.sassu@huaweicloud.com>
In-Reply-To: <20240415142436.2545003-1-roberto.sassu@huaweicloud.com>

On Mon Apr 15, 2024 at 5:24 PM EEST, Roberto Sassu wrote:
> From: Roberto Sassu <roberto.sassu@huawei.com>
>
> Integrity detection and protection has long been a desirable feature, to
> reach a large user base and mitigate the risk of flaws in the software
> and attacks.
>
> However, while solutions exist, they struggle to reach the large user
> base, due to requiring higher than desired constraints on performance,
> flexibility and configurability, that only security conscious people are
> willing to accept.
>
> This is where the new digest_cache LSM comes into play, it offers
> additional support for new and existing integrity solutions, to make
> them faster and easier to deploy.

Sorry for nitpicking but what are the existing integrity solutions,=20
and how does it help with this struggle? I.e. what is the gist here?

BR, Jarkko