On Mon, Jun 20, 2016 at 01:02:03AM -0400, Theodore Ts'o wrote:
>
> It's work that I'm not convinced is worth the gain? Perhaps I
> shouldn't have buried the lede, but repeating a paragraph from later
> in the message:
>
>So even if the AVX optimized is 100% faster than the generic version,
>
Am Sonntag, 19. Juni 2016, 21:36:14 schrieb Pavel Machek:
Hi Pavel,
> On Sun 2016-06-19 17:58:41, Stephan Mueller wrote:
> > Hi Herbert, Ted,
> >
> > The following patch set provides a different approach to /dev/random which
> > I call Linux Random Number Generator (LRNG) to collect entropy with
On Mon, Jun 20, 2016 at 09:25:28AM +0800, Herbert Xu wrote:
> > Yes, I understand the argument that the networking stack is now
> > requiring the crypto layer --- but not all IOT devices may necessarily
> > require the IP stack (they might be using some alternate wireless
> > communications stack)
On Sun, Jun 19, 2016 at 07:18:28PM -0400, Theodore Ts'o wrote:
>
> C) Simply compiling in the Crypto layer and the ChaCha20 generic
> handling (all of which is doing extra work which we would then be
> undoing in the random layer --- and I haven't included the extra code
> in the random driver need
On Wed, Jun 15, 2016 at 10:59:08PM +0800, Herbert Xu wrote:
> I think you should be accessing this through the crypto API rather
> than going direct. We already have at least one accelerated
> implementation of chacha20 and there may well be more of them
> in future. Going through the crypto API
On Sun, Jun 19, 2016 at 3:36 PM, Pavel Machek wrote:
>> The following patch set provides a different approach to /dev/random ...
>
> Dunno. It is very similar to existing rng, AFAICT.
I do not think so. A lot of the basic principles are the same of course,
but Stephan is suggesting some real cha
On Sun 2016-06-19 17:58:41, Stephan Mueller wrote:
> Hi Herbert, Ted,
>
> The following patch set provides a different approach to /dev/random which
> I call Linux Random Number Generator (LRNG) to collect entropy within the
> Linux
> kernel. The main improvements compared to the legacy /dev/rand
Am Sonntag, 19. Juni 2016, 09:58:55 schrieb Andi Kleen:
Hi Andi,
> On Sun, Jun 19, 2016 at 06:00:21PM +0200, Stephan Mueller wrote:
> > The LRNG with all its properties is documented in [1]. This
> > documentation covers the functional discussion as well as testing of all
> > aspects of entropy p
On Sun, Jun 19, 2016 at 06:00:21PM +0200, Stephan Mueller wrote:
> The LRNG with all its properties is documented in [1]. This
> documentation covers the functional discussion as well as testing of all
> aspects of entropy processing. In addition, the documentation explains
> the conducted regressi
The LRNG with all its properties is documented in [1]. This
documentation covers the functional discussion as well as testing of all
aspects of entropy processing. In addition, the documentation explains
the conducted regression tests to verify that the LRNG is API and ABI
compatible with the legac
Add LRNG compilation support.
Signed-off-by: Stephan Mueller
---
crypto/Kconfig | 11 +++
crypto/Makefile | 2 ++
2 files changed, 13 insertions(+)
diff --git a/crypto/Kconfig b/crypto/Kconfig
index c903f18..772d430 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1589,6 +1589,17
This patch allows several DRBG functions to be called by the LRNG kernel
code paths outside the drbg.c file.
Signed-off-by: Stephan Mueller
---
crypto/drbg.c | 11 +--
include/crypto/drbg.h | 7 +++
2 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/crypto/drbg.
The Hyper-V Linux Integration Services use the VMBus implementation for
communication with the Hypervisor. VMBus registers its own interrupt
handler that completely bypasses the common Linux interrupt handling.
This implies that the interrupt entropy collector is not triggered.
This patch adds the
In case the kernel crypto API is not compiled, use ChaCha20 stream
cipher as DRNG. The LRNG ChaCha20 support provides the DRNG
implementation with the generate and update functions. Further
documentation is provided in [1].
Signed-off-by: Stephan Mueller
---
crypto/Kconfig | 2 +-
cr
The chacha20_block function is extracted into its separate C file to
allow it to be used by other callers.
Signed-off-by: Stephan Mueller
---
crypto/Kconfig| 4 +++
crypto/Makefile | 1 +
crypto/chacha20_block.c | 79 +++
cryp
When selecting the LRNG for compilation, disable the legacy /dev/random
implementation.
The LRNG is a drop-in replacement for the legacy /dev/random which
implements the same in-kernel and user space API. Only the hooks of
/dev/random into other parts of the kernel need to be disabled.
Signed-off
Hi Herbert, Ted,
The following patch set provides a different approach to /dev/random which
I call Linux Random Number Generator (LRNG) to collect entropy within the Linux
kernel. The main improvements compared to the legacy /dev/random is to provide
sufficient entropy during boot time as well as
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