linux-ext4 - Re: [PATCH 3/6] fscrypt: use HKDF-SHA512 to derive the per-inode encryption keys

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Message-ID: <20170713160753.GA25989@gondor.apana.org.au>
Date:   Fri, 14 Jul 2017 00:07:54 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Stephan Müller <smueller@...onox.de>
Cc:     Eric Biggers <ebiggers3@...il.com>, linux-fscrypt@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-mtd@...ts.infradead.org, linux-crypto@...r.kernel.org,
        "Theodore Y . Ts'o" <tytso@....edu>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Alex Cope <alexcope@...gle.com>,
        Eric Biggers <ebiggers@...gle.com>
Subject: Re: [PATCH 3/6] fscrypt: use HKDF-SHA512 to derive the per-inode
 encryption keys

On Thu, Jul 13, 2017 at 04:54:55PM +0200, Stephan Müller wrote:
> Am Mittwoch, 12. Juli 2017, 23:00:32 CEST schrieb Eric Biggers:
> 
> Hi Herbert,
> 
> This patch adds a second KDF to the kernel -- the first is found in the keys 
> subsystem.
> 
> The next KDF that may come in is in the TLS scope.
> 
> Would it make sense to warm up the KDF patches adding generic KDF support to 
> the kernel crypto API that I supplied some time ago? The advantages would be 
> to have one location of KDF implementations and the benefit of the testmgr.

Sure.  Though I'd like to see what it looks like before I commit :)

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt