From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: platform-driver-x86@vger.kernel.org, x86@kernel.org
Cc: linux-kernel@vger.kernel.org, Darren Hart <dvhart@infradead.org>,
Andy Shevchenko <andy@infradead.org>
Subject: Re: [PATCH v6 08/11] intel_sgx: in-kernel launch enclave
Date: Mon, 4 Dec 2017 11:23:03 +0200 [thread overview]
Message-ID: <20171204092303.op7xo6nsptyvvtfv@linux.intel.com> (raw)
In-Reply-To: <20171128223852.5hcyg7kwf4su5qy5@linux.intel.com>
On Wed, Nov 29, 2017 at 12:38:52AM +0200, Jarkko Sakkinen wrote:
> On Sat, Nov 25, 2017 at 09:29:25PM +0200, Jarkko Sakkinen wrote:
> > This commits implements the in-kernel launch enclave. It is wrapped into
> > a user space program that reads SIGSTRUCT instances from stdin and
> > outputs launch tokens to stdout.
> >
> > The commit also adds enclave signing tool that is used by kbuild to
> > measure and sign the launch enclave.
> >
> > CONFIG_INTEL_SGX_SIGNING_KEY points to a PEM-file for the 3072-bit RSA
> > key that is used as the LE public key pair. The default location is:
> >
> > drivers/platform/x86/intel_sgx/intel_sgx_signing_key.pem
> >
> > If the default key does not exist kbuild will generate a random key and
> > place it to this location. KBUILD_SGX_SIGN_PIN can be used to specify
> > the passphrase for the LE public key.
> >
> > TinyCrypt (https://github.com/01org/tinycrypt) is used as AES
> > implementation, which is not timing resistant. Eventually this needs to
> > be replaced with AES-NI based implementation that could be either
> >
> > - re-use existing AES-NI code in the kernel
> > - have its own hand written code
>
> The AES is the biggest remaining open I think.
>
> I'm starting look at how to re-use kernel aesni code by linking it as
> part of the enclave binary i.e. aesni-intel_asm.S. This will render
> away TinyCrypt's AES code that is used ATM.
>
> I still need TinyCrypt CMAC, which I will modify to call CBC AES
> encryption routine.
>
> Does this sound like a sufficient plan?
I'm successfully using now kernel provided aesni_enc and aesni_set_key.
Only CMAC comes from TC. I think refactor stuff in cmac_mode.c to kernel
coding style and call it as derived works from TC since already calls
have replaced (AES). Makes sense to clean it up and make it pass
checkpatch.pl.
/Jarkko
next prev parent reply other threads:[~2017-12-04 9:23 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-25 19:29 [PATCH v6 00/11] Intel SGX Driver Jarkko Sakkinen
2017-11-25 19:29 ` [PATCH v6 01/11] intel_sgx: updated MAINTAINERS Jarkko Sakkinen
2017-11-25 20:19 ` Joe Perches
2017-11-26 10:41 ` Bjørn Mork
2017-11-26 15:33 ` Jarkko Sakkinen
2017-11-25 19:29 ` [PATCH v6 02/11] x86: add SGX definition to cpufeature Jarkko Sakkinen
2017-11-25 19:29 ` [PATCH v6 03/11] x86: define IA32_FEATURE_CONTROL.SGX_ENABLE Jarkko Sakkinen
2017-11-28 17:13 ` Sean Christopherson
2017-11-28 20:47 ` Jarkko Sakkinen
2017-11-25 19:29 ` [PATCH v6 04/11] x86: define IA32_FEATUE_CONTROL.SGX_LC Jarkko Sakkinen
2017-11-28 17:16 ` Sean Christopherson
2017-11-28 18:28 ` Sean Christopherson
2017-11-28 20:53 ` Jarkko Sakkinen
2017-11-28 21:24 ` Jarkko Sakkinen
2017-11-28 21:33 ` Sean Christopherson
2017-11-28 21:55 ` Jarkko Sakkinen
2017-11-28 22:00 ` Sean Christopherson
2017-11-28 22:21 ` Jarkko Sakkinen
2017-11-29 15:38 ` Jarkko Sakkinen
2017-11-30 3:05 ` Kai Huang
2017-11-30 16:44 ` Jarkko Sakkinen
2017-11-28 21:40 ` Jarkko Sakkinen
2017-11-28 21:44 ` Sean Christopherson
2017-11-28 22:03 ` Jarkko Sakkinen
2017-11-28 22:11 ` Jarkko Sakkinen
2017-11-28 20:51 ` Jarkko Sakkinen
2017-11-25 19:29 ` [PATCH v6 05/11] x86: add SGX MSRs to msr-index.h Jarkko Sakkinen
2017-11-28 17:22 ` Sean Christopherson
2017-11-28 20:48 ` Jarkko Sakkinen
2017-11-25 19:29 ` [PATCH v6 06/11] intel_sgx: driver for Intel Software Guard Extensions Jarkko Sakkinen
2017-11-26 17:33 ` Jarkko Sakkinen
2017-11-26 18:46 ` Jarkko Sakkinen
2017-11-26 19:01 ` Jarkko Sakkinen
2017-11-29 18:02 ` Jarkko Sakkinen
2017-11-28 19:07 ` Sean Christopherson
2017-11-30 17:32 ` Sean Christopherson
2017-12-04 8:59 ` Jarkko Sakkinen
2017-11-25 19:29 ` [PATCH v6 07/11] intel_sgx: ptrace() support Jarkko Sakkinen
2017-11-26 15:44 ` Jarkko Sakkinen
2017-11-26 15:50 ` Joe Perches
2017-11-26 16:53 ` Jarkko Sakkinen
2017-11-26 17:01 ` Jarkko Sakkinen
2017-11-25 19:29 ` [PATCH v6 08/11] intel_sgx: in-kernel launch enclave Jarkko Sakkinen
2017-11-27 9:58 ` Till Smejkal
2017-11-28 20:17 ` Jarkko Sakkinen
2017-11-28 22:38 ` Jarkko Sakkinen
2017-12-04 9:23 ` Jarkko Sakkinen [this message]
2017-11-25 19:29 ` [PATCH v6 09/11] fs/pipe.c: export create_pipe_files() and replace_fd() Jarkko Sakkinen
2017-11-28 14:35 ` Christoph Hellwig
2017-11-28 20:42 ` Jarkko Sakkinen
2017-11-28 21:05 ` Christoph Hellwig
2017-11-28 21:57 ` Jarkko Sakkinen
2017-11-29 23:13 ` Christoph Hellwig
2017-11-30 16:43 ` Jarkko Sakkinen
2017-11-30 18:38 ` James Bottomley
2017-12-04 9:00 ` Jarkko Sakkinen
2017-12-07 17:37 ` Jarkko Sakkinen
2017-12-08 13:05 ` Jarkko Sakkinen
2017-11-25 19:29 ` [PATCH v6 10/11] intel_sgx: glue code for in-kernel LE Jarkko Sakkinen
2017-12-13 23:34 ` Christopherson, Sean J
2017-11-25 19:29 ` [PATCH v6 11/11] intel_sgx: driver documentation Jarkko Sakkinen
2017-12-12 14:07 ` [PATCH v6 00/11] Intel SGX Driver Pavel Machek
2017-12-14 11:18 ` Jarkko Sakkinen
2017-12-19 23:33 ` Jarkko Sakkinen
2017-12-20 13:18 ` Jarkko Sakkinen
2018-01-04 14:17 ` Cedric Blancher
2018-01-04 14:27 ` Greg Kroah-Hartman
2018-01-04 19:18 ` Ozgur
2018-01-04 15:08 ` James Bottomley
2018-01-09 14:27 ` Jarkko Sakkinen
2018-02-08 8:46 ` Pavel Machek
2018-02-08 13:48 ` Jarkko Sakkinen
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