linux-kernel - Re: [PATCH v2 0/6] General Key Derivation Function Support

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Message-ID: <20190130100854.iey2mbmz6777pn2n@gondor.apana.org.au>
Date:   Wed, 30 Jan 2019 18:08:54 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Stephan Mueller <smueller@...onox.de>
Cc:     Eric Biggers <ebiggers@...nel.org>,
        James Bottomley <James.Bottomley@...senpartnership.com>,
        Andy Lutomirski <luto@...capital.net>,
        "Lee, Chun-Yi" <joeyli.kernel@...il.com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Pavel Machek <pavel@....cz>, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, keyrings@...r.kernel.org,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Chen Yu <yu.c.chen@...el.com>,
        Oliver Neukum <oneukum@...e.com>,
        Ryan Chen <yu.chen.surf@...il.com>,
        David Howells <dhowells@...hat.com>,
        Giovanni Gherdovich <ggherdovich@...e.cz>,
        Randy Dunlap <rdunlap@...radead.org>,
        Jann Horn <jannh@...gle.com>,
        Andy Lutomirski <luto@...nel.org>, linux-crypto@...r.kernel.org
Subject: Re: [PATCH v2 0/6] General Key Derivation Function Support

On Mon, Jan 28, 2019 at 11:07:28AM +0100, Stephan Mueller wrote:
> Am Mittwoch, 16. Januar 2019, 12:06:54 CET schrieb Stephan Müller:
> 
> Hi Herbert,
> 
> > Changes v2:
> > * Incorporation of all comments from Eric Biggers
> > 
> > Stephan Mueller (6):
> >   crypto: add template handling for RNGs
> >   crypto: kdf - SP800-108 Key Derivation Function
> >   crypto: kdf - add known answer tests
> >   crypto: hkdf - HMAC-based Extract-and-Expand KDF
> >   crypto: hkdf - add known answer tests
> >   crypto: tcrypt - add KDF test invocation
> > 
> >  crypto/Kconfig                |  13 +
> >  crypto/Makefile               |   2 +
> >  crypto/hkdf.c                 | 272 +++++++++++++++++++
> >  crypto/kdf_sp800108.c         | 491 ++++++++++++++++++++++++++++++++++
> >  crypto/rng.c                  |  44 +++
> >  crypto/tcrypt.c               |   8 +
> >  crypto/testmgr.c              | 245 +++++++++++++++++
> >  crypto/testmgr.h              | 198 ++++++++++++++
> >  include/crypto/internal/rng.h |  26 ++
> >  9 files changed, 1299 insertions(+)
> >  create mode 100644 crypto/hkdf.c
> >  create mode 100644 crypto/kdf_sp800108.c
> 
> Do you happen to have any comments on this patch set?

I'm still not convinced why this needs to go into the crypto API
instead of being hosted in a helper which should achieve pretty
much the same result.

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