From: Andy Lutomirski <luto@kernel.org>
To: "Stephan Müller" <smueller@chronox.de>
Cc: Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Linux API <linux-api@vger.kernel.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"Alexander E. Patrakov" <patrakov@gmail.com>,
"Ahmed S. Darwish" <darwish.07@gmail.com>,
"Theodore Y. Ts'o" <tytso@mit.edu>, Willy Tarreau <w@1wt.eu>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Vito Caputo <vcaputo@pengaru.com>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Jan Kara <jack@suse.cz>, Ray Strode <rstrode@redhat.com>,
William Jon McCann <mccann@jhu.edu>,
zhangjs <zachary@baishancloud.com>,
Andy Lutomirski <luto@kernel.org>,
Florian Weimer <fweimer@redhat.com>,
Lennart Poettering <mzxreary@0pointer.de>,
Nicolai Stange <nstange@suse.de>,
"Peter, Matthias" <matthias.peter@bsi.bund.de>,
Marcelo Henrique Cerri <marcelo.cerri@canonical.com>,
Roman Drahtmueller <draht@schaltsekun.de>,
Neil Horman <nhorman@redhat.com>
Subject: Re: [PATCH v25 12/12] LRNG - add interface for gathering of raw entropy
Date: Tue, 19 Nov 2019 02:04:42 -0800 [thread overview]
Message-ID: <CALCETrUm5gM9s6vqvXWeT5phwRnh-CgLhYY=_eNZ2FDVjBAxSw@mail.gmail.com> (raw)
In-Reply-To: <15745039.MlzBmBdvSy@positron.chronox.de>
On Sun, Nov 17, 2019 at 2:55 PM Stephan Müller <smueller@chronox.de> wrote:
>
> Am Samstag, 16. November 2019, 17:51:24 CET schrieb Andy Lutomirski:
>
> Hi Andy,
>
> > > On Nov 16, 2019, at 1:40 AM, Stephan Müller <smueller@chronox.de> wrote:
> > >
> > > The test interface allows a privileged process to capture the raw
> > > unconditioned noise that is collected by the LRNG for statistical
> > > analysis. Extracted noise data is not used to seed the LRNG. This
> > > is a test interface and not appropriate for production systems.
> > > Yet, the interface is considered to be sufficiently secured for
> > > production systems.
> > >
> > > Access to the data is given through the lrng_raw debugfs file. The
> > > data buffer should be multiples of sizeof(u32) to fill the entire
> > > buffer. Using the option lrng_testing.boot_test=1 the raw noise of
> > > the first 1000 entropy events since boot can be sampled.
> > >
> > > This test interface allows generating the data required for
> > > analysis whether the LRNG is in compliance with SP800-90B
> > > sections 3.1.3 and 3.1.4.
> > >
> > > CC: "Eric W. Biederman" <ebiederm@xmission.com>
> > > CC: "Alexander E. Patrakov" <patrakov@gmail.com>
> > > CC: "Ahmed S. Darwish" <darwish.07@gmail.com>
> > > CC: "Theodore Y. Ts'o" <tytso@mit.edu>
> > > CC: Willy Tarreau <w@1wt.eu>
> > > CC: Matthew Garrett <mjg59@srcf.ucam.org>
> > > CC: Vito Caputo <vcaputo@pengaru.com>
> > > CC: Andreas Dilger <adilger.kernel@dilger.ca>
> > > CC: Jan Kara <jack@suse.cz>
> > > CC: Ray Strode <rstrode@redhat.com>
> > > CC: William Jon McCann <mccann@jhu.edu>
> > > CC: zhangjs <zachary@baishancloud.com>
> > > CC: Andy Lutomirski <luto@kernel.org>
> > > CC: Florian Weimer <fweimer@redhat.com>
> > > CC: Lennart Poettering <mzxreary@0pointer.de>
> > > CC: Nicolai Stange <nstange@suse.de>
> > > Reviewed-by: Roman Drahtmueller <draht@schaltsekun.de>
> > > Tested-by: Roman Drahtmüller <draht@schaltsekun.de>
> > > Tested-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
> > > Tested-by: Neil Horman <nhorman@redhat.com>
> > > Signed-off-by: Stephan Mueller <smueller@chronox.de>
> > > ---
> > > drivers/char/lrng/Kconfig | 16 ++
> > > drivers/char/lrng/Makefile | 1 +
> > > drivers/char/lrng/lrng_testing.c | 324 +++++++++++++++++++++++++++++++
> > > 3 files changed, 341 insertions(+)
> > > create mode 100644 drivers/char/lrng/lrng_testing.c
> > >
> > > diff --git a/drivers/char/lrng/Kconfig b/drivers/char/lrng/Kconfig
> > > index e6ca3acc1e48..4ccc710832ef 100644
> > > --- a/drivers/char/lrng/Kconfig
> > > +++ b/drivers/char/lrng/Kconfig
> > > @@ -169,4 +169,20 @@ config LRNG_APT_CUTOFF
> > >
> > > default 325 if !LRNG_APT_BROKEN
> > > default 32 if LRNG_APT_BROKEN
> > >
> > > +config LRNG_TESTING
> > > + bool "Enable entropy test interface to LRNG noise source"
> > > + select CONFIG_DEBUG_FS
> > > + help
> > > + The test interface allows a privileged process to capture
> > > + the raw unconditioned noise that is collected by the LRNG
> > > + for statistical analysis. Extracted noise data is not used
> > > + to seed the LRNG.
> > > +
> > > + The raw noise data can be obtained using the lrng_raw
> > > + debugfs file. Using the option lrng_testing.boot_test=1
> > > + the raw noise of the first 1000 entropy events since boot
> > > + can be sampled.
> > > +
> > > + If unsure, say N.
> > > +
> > > endif # LRNG
> > > diff --git a/drivers/char/lrng/Makefile b/drivers/char/lrng/Makefile
> > > index 0713e9c0aa6e..c0b6cc4301fe 100644
> > > --- a/drivers/char/lrng/Makefile
> > > +++ b/drivers/char/lrng/Makefile
> > > @@ -16,3 +16,4 @@ obj-$(CONFIG_LRNG_KCAPI) += lrng_kcapi.o
> > > obj-$(CONFIG_LRNG_JENT) += lrng_jent.o
> > > obj-$(CONFIG_LRNG_TRNG_SUPPORT) += lrng_trng.o
> > > obj-$(CONFIG_LRNG_HEALTH_TESTS) += lrng_health.o
> > > +obj-$(CONFIG_LRNG_TESTING) += lrng_testing.o
> > > diff --git a/drivers/char/lrng/lrng_testing.c
> > > b/drivers/char/lrng/lrng_testing.c new file mode 100644
> > > index 000000000000..5c33d3bd2172
> > > --- /dev/null
> > > +++ b/drivers/char/lrng/lrng_testing.c
> > > @@ -0,0 +1,324 @@
> > > +// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
> > > +/*
> > > + * Linux Random Number Generator (LRNG) Raw entropy collection tool
> > > + *
> > > + * Copyright (C) 2019, Stephan Mueller <smueller@chronox.de>
> > > + */
> > > +
> > > +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> > > +
> > > +#include <linux/atomic.h>
> > > +#include <linux/bug.h>
> > > +#include <linux/debugfs.h>
> > > +#include <linux/module.h>
> > > +#include <linux/sched.h>
> > > +#include <linux/sched/signal.h>
> > > +#include <linux/slab.h>
> > > +#include <linux/string.h>
> > > +#include <linux/types.h>
> > > +#include <linux/uaccess.h>
> > > +#include <linux/workqueue.h>
> > > +#include <asm/errno.h>
> > > +
> > > +#include "lrng_internal.h"
> > > +
> > > +#define LRNG_TESTING_RINGBUFFER_SIZE 1024
> > > +#define LRNG_TESTING_RINGBUFFER_MASK (LRNG_TESTING_RINGBUFFER_SIZE -
> > > 1)
> > > +
> > > +static u32 lrng_testing_rb[LRNG_TESTING_RINGBUFFER_SIZE];
> > > +static atomic_t lrng_rb_reader = ATOMIC_INIT(0);
> > > +static atomic_t lrng_rb_writer = ATOMIC_INIT(0);
> > > +static atomic_t lrng_rb_first_in = ATOMIC_INIT(0);
> > > +static atomic_t lrng_testing_enabled = ATOMIC_INIT(0);
> > > +
> > > +static DECLARE_WAIT_QUEUE_HEAD(lrng_raw_read_wait);
> > > +
> > > +static u32 boot_test = 0;
> > > +module_param(boot_test, uint, 0644);
> > > +MODULE_PARM_DESC(boot_test, "Enable gathering boot time entropy of the
> > > first" + " entropy events");
> > > +
> > > +static inline void lrng_raw_entropy_reset(void)
> > > +{
> > > + atomic_set(&lrng_rb_reader, 0);
> > > + atomic_set(&lrng_rb_writer, 0);
> > > + atomic_set(&lrng_rb_first_in, 0);
> > > +}
> > > +
> > > +static void lrng_raw_entropy_init(void)
> > > +{
> > > + /*
> > > + * The boot time testing implies we have a running test. If the
> > > + * caller wants to clear it, he has to unset the boot_test flag
> > > + * at runtime via sysfs to enable regular runtime testing
> > > + */
> > > + if (boot_test)
> > > + return;
> > > +
> > > + lrng_raw_entropy_reset();
> > > + atomic_set(&lrng_testing_enabled, 1);
> > > + pr_warn("Enabling raw entropy collection\n");
> > > +}
> > > +
> > > +static void lrng_raw_entropy_fini(void)
> > > +{
> > > + if (boot_test)
> > > + return;
> > > +
> > > + lrng_raw_entropy_reset();
> > > + atomic_set(&lrng_testing_enabled, 0);
> > > + pr_warn("Disabling raw entropy collection\n");
> > > +}
> > > +
> > > +bool lrng_raw_entropy_store(u32 value)
> > > +{
> > > + unsigned int write_ptr;
> > > + unsigned int read_ptr;
> > > +
> > > + if (!atomic_read(&lrng_testing_enabled) && !boot_test)
> > > + return false;
> > > +
> > > + write_ptr = (unsigned int)atomic_add_return_relaxed(1,
> > > &lrng_rb_writer); + read_ptr = (unsigned
> > > int)atomic_read(&lrng_rb_reader);
>
> Before answering your comments, please allow me to clarify the following:
>
> This entire code is intended to obtain take raw unconditioned noise data that
> needs to be extracted from the kernel to user space to allow it to be further
> analyzed. This is also why it is mentioned in the Kconfig selection that in
> doubt one should select N and that this code is not intended for production
> kernels although this code should be secure enough to be present in production
> kernels.
>
> For example, raw unconditioned noise data needs to be processed by the
> complicated math outlined in chapter 6 of [1]. For that, there is a tool
> available, see [2]. For that tool, data is needed that is obtained with the
> getrawentropy tool available with [3] where this tool obtains the data from
> the SysFS file that is implemented with this C file.
>
> In addition, [1] even needs the data from the very first 1000 interrupts after
> boot. Hence, the LRNG needs to be able to store that data until user space can
> pick it up (see the boot_test variable).
>
> The assessment resulting from this can be reviewed at [4] section 3.2 In
> particular, the numbers provided at the end of sections 3.2.3 and 3.2.4 are
> obtained with this interface.
>
> Other examples where such raw unconditioned noise data is needed for further
> analysis is [5], especially chapter 6.
>
> This testing has nothing to do with the runtime testing provided with the
> patch set 11. All data that ends up here is not available to the LRNG and will
> not contribute to any entropy collection.
>
> See the following:
>
>
> if (this_cpu_read(cpu_tlbstate.loaded_mm) == &init_mm)
> return;
>
> --
> 2.17.1
static inline void lrng_time_process(void)
> {
> ...
> if (lrng_raw_entropy_store(now_time))
> return;
>
>
> bool lrng_raw_entropy_store(u32 value)
> {
> ...
> if (!atomic_read(&lrng_testing_enabled) && !boot_test)
> return false;
> ...
> return true;
>
> >
> > Am I correct in assuming that this function can be called concurrently in
> > different threads or CPUs?
>
> Yes, because it is called indirectly by add_interrupt_randomness.
> > > +
> > > + /*
> > > + * Disable entropy testing for boot time testing after ring buffer
> > > + * is filled.
> > > + */
> > > + if (boot_test && write_ptr > LRNG_TESTING_RINGBUFFER_SIZE) {
> > > + pr_warn_once("Boot time entropy collection test disabled\n");
> > > + return false;
> > > + }
> > > +
> > > + if (boot_test && !atomic_read(&lrng_rb_first_in))
> > > + pr_warn("Boot time entropy collection test enabled\n");
> > > +
> > > + lrng_testing_rb[write_ptr & LRNG_TESTING_RINGBUFFER_MASK] = value;
> >
> > You’re writing *somewhere*, but not necessarily to the first open slot.
>
> The idea is that there is a reader pointer and a writer pointer where the
> reader always must be smaller or equal to the writer (modulo the size of the
> ring buffer). So, I do not care where the writer ptr is.
>
> All I need is that:
>
> 1. reader and writer ptr must start with the same value at boot time (e.g. 0)
>
> 2. reader ptr is always <= writer ptr in order for data to be read.
You're making an implicit assumption, though: that the writer has
actually written the data indicated by the writer ptr. But you're
updating the writer ptr *before* you write, so that assumption is
false.
> But I simplified the code now, the code now only copies the data out if the
> reader <= writer modulo the ring buffer size. In this case, if the writer is
> much faster, then we loose some values.
I'll look at the new code. I'm not sure what you mean by a <= b
modulo N -- in a cyclic group (e.g. the integers 0 .. N-1), there
isn't really a well-defined concept of <=.
next prev parent reply other threads:[~2019-11-19 10:04 UTC|newest]
Thread overview: 162+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-11 18:17 [PATCH v24 00/12] /dev/random - a new approach with full SP800-90B compliance Stephan Müller
2019-11-11 18:18 ` [PATCH v24 01/12] Linux Random Number Generator Stephan Müller
2019-11-11 23:54 ` Thomas Gleixner
2019-11-12 2:25 ` Stephan Müller
2019-11-12 10:16 ` Thomas Gleixner
2019-11-12 22:30 ` kbuild test robot
2019-11-12 23:15 ` Stephan Müller
2019-11-13 0:14 ` kbuild test robot
2019-11-13 0:25 ` Stephan Müller
2019-11-24 4:51 ` Sandy Harris
2019-11-24 9:02 ` Stephan Mueller
2019-11-11 18:19 ` [PATCH v24 02/12] LRNG - allocate one SDRNG instance per NUMA node Stephan Müller
2019-11-11 18:20 ` [PATCH v24 03/12] LRNG - /proc interface Stephan Müller
2019-11-11 18:20 ` [PATCH v24 04/12] LRNG - add switchable DRNG support Stephan Müller
2019-11-11 18:21 ` [PATCH v24 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2019-11-11 18:21 ` [PATCH v24 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2019-11-11 18:22 ` [PATCH v24 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2019-11-11 18:23 ` [PATCH v24 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2019-11-11 18:23 ` [PATCH v24 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2019-11-11 18:24 ` [PATCH v24 10/12] LRNG - add TRNG support Stephan Müller
2019-11-11 18:26 ` [PATCH v24 11/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2019-11-12 19:58 ` Alexander E. Patrakov
2019-11-12 23:11 ` Stephan Müller
2019-11-13 0:36 ` Stephan Müller
2019-11-13 6:02 ` Alexander E. Patrakov
2019-11-14 1:46 ` Stephan Müller
2019-11-11 18:26 ` [PATCH v24 12/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2019-11-12 20:55 ` kbuild test robot
2019-11-12 23:13 ` Stephan Müller
2019-11-12 13:23 ` [PATCH v24 00/12] /dev/random - a new approach with full SP800-90B compliance Florian Weimer
2019-11-12 22:43 ` Stephan Müller
2019-11-12 15:33 ` Andy Lutomirski
2019-11-12 23:03 ` Stephan Müller
2019-11-12 23:26 ` Stephan Müller
2019-11-13 4:24 ` Stephan Müller
2019-11-13 4:48 ` Andy Lutomirski
2019-11-13 12:16 ` Stephan Müller
2019-11-16 9:32 ` [PATCH v25 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2019-11-16 9:33 ` [PATCH v25 01/12] Linux Random Number Generator Stephan Müller
2019-11-16 11:25 ` Thomas Gleixner
2019-11-17 10:30 ` Stephan Müller
2019-11-16 18:13 ` Nicolai Stange
2019-11-17 11:01 ` Stephan Müller
2019-11-16 9:33 ` [PATCH v25 02/12] LRNG - allocate one SDRNG instance per NUMA node Stephan Müller
2019-11-16 9:34 ` [PATCH v25 03/12] LRNG - /proc interface Stephan Müller
2019-11-16 16:39 ` Andy Lutomirski
2019-11-17 12:16 ` Stephan Müller
2019-11-19 10:06 ` Andy Lutomirski
2019-11-19 10:55 ` Stephan Mueller
2019-11-19 17:40 ` Andy Lutomirski
2019-11-16 23:36 ` Eric W. Biederman
2019-11-17 11:37 ` Stephan Müller
2019-11-16 9:34 ` [PATCH v25 04/12] LRNG - add switchable DRNG support Stephan Müller
2019-11-16 9:35 ` [PATCH v25 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2019-11-16 9:35 ` [PATCH v25 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2019-11-16 9:35 ` [PATCH v25 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2019-11-16 9:36 ` [PATCH v25 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2019-11-16 9:36 ` [PATCH v25 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2019-11-20 13:33 ` Neil Horman
2019-11-20 20:07 ` Stephan Müller
2019-11-21 14:19 ` Neil Horman
2019-11-21 14:33 ` Stephan Mueller
2019-11-16 9:37 ` [PATCH v25 10/12] LRNG - add TRNG support Stephan Müller
2019-11-16 16:09 ` Andy Lutomirski
2019-11-17 11:10 ` Stephan Müller
2019-11-19 10:07 ` Andy Lutomirski
2019-11-19 10:46 ` Stephan Mueller
2019-11-19 12:41 ` Greg Kroah-Hartman
2019-11-20 8:58 ` Stephan Müller
2019-11-20 9:55 ` Alexander E. Patrakov
2019-11-20 13:29 ` Greg Kroah-Hartman
2019-11-20 19:51 ` Stephan Müller
2019-11-20 19:57 ` Alexander E. Patrakov
2019-11-20 20:32 ` Greg Kroah-Hartman
2019-11-21 13:06 ` Stephan Müller
2019-11-16 9:37 ` [PATCH v25 11/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2019-11-16 9:38 ` [PATCH v25 12/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2019-11-16 16:51 ` Andy Lutomirski
2019-11-17 22:55 ` Stephan Müller
2019-11-19 10:04 ` Andy Lutomirski [this message]
2019-11-19 17:17 ` Randy Dunlap
2019-11-20 9:01 ` Stephan Müller
2019-11-21 12:18 ` Nicolai Stange
2019-11-21 15:18 ` Stephan Müller
2019-11-23 20:08 ` [PATCH v26 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2019-11-23 20:10 ` [PATCH v26 01/12] Linux Random Number Generator Stephan Müller
2019-11-24 22:44 ` kbuild test robot
2019-11-25 6:29 ` Stephan Mueller
2019-11-23 20:10 ` [PATCH v26 02/12] LRNG - allocate one SDRNG instance per NUMA node Stephan Müller
2019-11-23 20:11 ` [PATCH v26 03/12] LRNG - sysctls and /proc interface Stephan Müller
2019-11-23 20:11 ` [PATCH v26 04/12] LRNG - add switchable DRNG support Stephan Müller
2019-11-23 20:31 ` [PATCH v26 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2019-11-23 20:32 ` [PATCH v26 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2019-11-23 20:32 ` [PATCH v26 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2019-11-23 20:33 ` [PATCH v26 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2019-11-23 20:34 ` [PATCH v26 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2019-11-23 20:34 ` [PATCH v26 10/12] LRNG - add TRNG support Stephan Müller
2019-11-23 20:34 ` [PATCH v26 11/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2019-11-23 20:35 ` [PATCH v26 12/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2020-01-09 8:29 ` [PATCH v27 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2020-01-09 8:30 ` [PATCH v27 01/12] Linux Random Number Generator Stephan Müller
2020-01-16 6:09 ` kbuild test robot
2020-01-16 6:41 ` Stephan Mueller
2020-01-09 8:31 ` [PATCH v27 02/12] LRNG - allocate one DRNG instance per NUMA node Stephan Müller
2020-01-09 8:31 ` [PATCH v27 03/12] LRNG - sysctls and /proc interface Stephan Müller
2020-01-09 8:32 ` [PATCH v27 04/12] LRNG - add switchable DRNG support Stephan Müller
2020-01-11 7:09 ` kbuild test robot
2020-01-12 10:12 ` Stephan Müller
2020-01-09 8:32 ` [PATCH v27 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2020-01-09 8:32 ` [PATCH v27 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2020-01-09 8:33 ` [PATCH v27 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2020-01-09 8:33 ` [PATCH v27 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2020-01-09 8:34 ` [PATCH v27 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2020-01-10 0:24 ` Randy Dunlap
2020-01-10 7:45 ` Stephan Mueller
2020-01-09 8:34 ` [PATCH v27 10/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2020-01-10 0:20 ` Randy Dunlap
2020-01-10 8:27 ` Stephan Mueller
2020-01-09 8:35 ` [PATCH v27 11/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2020-01-09 8:35 ` [PATCH v27 12/12] LRNG - add power-on and runtime self-tests Stephan Müller
2020-01-10 0:22 ` Randy Dunlap
2020-01-10 7:48 ` Stephan Mueller
2020-01-13 10:39 ` Dan Carpenter
2020-01-13 10:46 ` Stephan Mueller
2020-01-15 10:31 ` [PATCH v28 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2020-01-15 10:31 ` [PATCH v28 01/12] Linux Random Number Generator Stephan Müller
2020-01-16 0:11 ` Randy Dunlap
2020-01-16 7:22 ` Stephan Mueller
2020-01-15 10:32 ` [PATCH v28 02/12] LRNG - allocate one DRNG instance per NUMA node Stephan Müller
2020-01-15 10:32 ` [PATCH v28 03/12] LRNG - sysctls and /proc interface Stephan Müller
2020-01-15 10:32 ` [PATCH v28 04/12] LRNG - add switchable DRNG support Stephan Müller
2020-01-15 10:33 ` [PATCH v28 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2020-01-15 10:33 ` [PATCH v28 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2020-01-16 0:14 ` Randy Dunlap
2020-01-16 6:55 ` Stephan Mueller
2020-01-15 10:34 ` [PATCH v28 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2020-01-16 0:15 ` Randy Dunlap
2020-01-16 6:54 ` Stephan Mueller
2020-01-15 10:34 ` [PATCH v28 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2020-01-15 10:34 ` [PATCH v28 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2020-01-16 0:17 ` Randy Dunlap
2020-01-16 6:51 ` Stephan Mueller
2020-01-15 10:35 ` [PATCH v28 10/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2020-01-15 10:35 ` [PATCH v28 11/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2020-01-16 0:18 ` Randy Dunlap
2020-01-16 6:43 ` Stephan Mueller
2020-01-16 6:48 ` Randy Dunlap
2020-01-16 6:52 ` Stephan Mueller
2020-01-15 10:36 ` [PATCH v28 12/12] LRNG - add power-on and runtime self-tests Stephan Müller
2020-01-19 21:12 ` [PATCH v29 00/12] /dev/random - a new approach with full SP800-90B Stephan Müller
2020-01-19 21:13 ` [PATCH v29 01/12] Linux Random Number Generator Stephan Müller
2020-01-19 21:13 ` [PATCH v29 02/12] LRNG - allocate one DRNG instance per NUMA node Stephan Müller
2020-01-19 21:14 ` [PATCH v29 03/12] LRNG - sysctls and /proc interface Stephan Müller
2020-01-19 21:14 ` [PATCH v29 04/12] LRNG - add switchable DRNG support Stephan Müller
2020-01-19 21:15 ` [PATCH v29 05/12] crypto: DRBG - externalize DRBG functions for LRNG Stephan Müller
2020-01-19 21:16 ` [PATCH v29 06/12] LRNG - add SP800-90A DRBG extension Stephan Müller
2020-01-19 21:16 ` [PATCH v29 07/12] LRNG - add kernel crypto API PRNG extension Stephan Müller
2020-01-19 21:17 ` [PATCH v29 08/12] crypto: provide access to a static Jitter RNG state Stephan Müller
2020-01-19 21:18 ` [PATCH v29 09/12] LRNG - add Jitter RNG fast noise source Stephan Müller
2020-01-19 21:18 ` [PATCH v29 10/12] LRNG - add SP800-90B compliant health tests Stephan Müller
2020-01-19 21:19 ` [PATCH v29 11/12] LRNG - add interface for gathering of raw entropy Stephan Müller
2020-01-19 21:20 ` [PATCH v29 12/12] LRNG - add power-on and runtime self-tests Stephan Müller
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