linux-kernel - Re: [PATCH 00/23] Crypto keys and module signing

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Message-ID: <18630.1338903474@redhat.com>
Date:	Tue, 05 Jun 2012 14:37:54 +0100
From:	David Howells <dhowells@...hat.com>
To:	Rusty Russell <rusty@...tcorp.com.au>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>
Cc:	dhowells@...hat.com, kyle@...artin.ca, dmitry.kasatkin@...el.com,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, keyrings@...ux-nfs.org,
	Tim Abbott <tabbott@...lice.com>
Subject: Re: [PATCH 00/23] Crypto keys and module signing

Mimi Zohar <zohar@...ux.vnet.ibm.com> wrote:

> As the signature would be stored as an extended attribute, we wouldn't
> need to pass it.  Unfortunately not all filesystems have xattr support,
> nor do all of the package installation mechanims.  The benefit of
> storing the signature as an extended attribute, however, is that there
> is a consistent mechanism for verifying file data integrity for all
> files, not only ELF.

We also want to be able to do module signature verification with CONFIG_IMA=n.

David
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