linux-kernel - Re: [RFC PATCH 8/8] KEYS: Implement PKCS#8 RSA Private Key parser [ver 3]

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Message-ID: <1462993861.2484.7.camel@infradead.org>
Date:	Wed, 11 May 2016 20:11:01 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	David Howells <dhowells@...hat.com>,
	mathew.j.martineau@...ux.intel.com, tadeusz.struk@...el.com
Cc:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, keyrings@...r.kernel.org,
	linux-crypto@...r.kernel.org
Subject: Re: [RFC PATCH 8/8] KEYS: Implement PKCS#8 RSA Private Key parser
 [ver 3]

On Wed, 2016-05-11 at 15:22 +0100, David Howells wrote:
> Implement PKCS#8 RSA Private Key format [RFC 5208] parser for the
> asymmetric key type.  For the moment, this will only support unencrypted
> DER blobs.  PEM and decryption can be added later.

I would recommend *not* adding PEM and decryption support. That can
live in userspace. You don't want to end up with the whole set of
handlers for all the weird formats, from PKCS#12 to OpenSSL's non-
standard encrypted PEM files.

Trust me, I implemented a whole bunch of that for OpenConnect. You
don't want it. Just mandate unencrypted binary PKCS#8 (or PKCS#1).

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@...el.com                              Intel Corporation


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