From: Mimi Zohar <zohar@linux.ibm.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
James Bottomley <jejb@linux.ibm.com>
Cc: Roberto Sassu <roberto.sassu@huawei.com>,
jgg@ziepe.ca, linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org, keyrings@vger.kernel.org,
linux-kernel@vger.kernel.org, crazyt2019+lml@gmail.com,
tyhicks@canonical.com, nayna@linux.vnet.ibm.com,
silviu.vlasceanu@huawei.com
Subject: Re: [PATCH] KEYS: trusted: allow module init if TPM is inactive or deactivated
Date: Tue, 09 Jul 2019 12:31:45 -0400 [thread overview]
Message-ID: <1562689905.28089.52.camel@linux.ibm.com> (raw)
In-Reply-To: <20190709162458.f4fjteokcmidv7w6@linux.intel.com>
On Tue, 2019-07-09 at 19:24 +0300, Jarkko Sakkinen wrote:
> On Mon, Jul 08, 2019 at 01:34:59PM -0700, James Bottomley wrote:
> > Not a criticism of your patch, but can we please stop doing this.
> > Single random number sources are horrendously bad practice because it
> > gives an attacker a single target to subvert. We should ensure the TPM
> > is plugged into the kernel RNG as a source and then take randomness
> > from the mixed pool so it's harder for an attacker because they have to
> > subvert all our sources to predict what came out.
>
> It is and I agree.
I still haven't quite figured out why the digests need to be
initialized to anything other than 0.
Mimi
next prev parent reply other threads:[~2019-07-09 16:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-05 16:37 [PATCH] KEYS: trusted: allow module init if TPM is inactive or deactivated Roberto Sassu
2019-07-08 19:55 ` Tyler Hicks
2019-07-08 20:34 ` James Bottomley
2019-07-09 16:24 ` Jarkko Sakkinen
2019-07-09 16:31 ` Mimi Zohar [this message]
2019-08-02 21:18 ` Tyler Hicks
2019-07-11 19:48 ` Jarkko Sakkinen
2019-07-15 16:44 ` Roberto Sassu
2019-08-01 16:32 ` Jarkko Sakkinen
2019-08-02 8:21 ` Roberto Sassu
2019-08-02 14:27 ` Tyler Hicks
2019-08-02 19:42 ` Jarkko Sakkinen
2019-08-02 20:23 ` Tyler Hicks
2019-08-02 20:35 ` Tyler Hicks
2019-08-03 14:44 ` Jarkko Sakkinen
2019-08-04 1:46 ` Mimi Zohar
2019-08-05 14:50 ` Roberto Sassu
2019-08-05 15:54 ` Mimi Zohar
2019-08-05 16:04 ` Roberto Sassu
2019-08-05 16:04 ` Tyler Hicks
2019-08-05 16:51 ` Roberto Sassu
2019-08-05 16:53 ` Tyler Hicks
2019-08-05 22:11 ` Jarkko Sakkinen
2019-08-02 19:40 ` Jarkko Sakkinen
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