2015-06-15 0:43 GMT+08:00 Greg KH gre...@linuxfoundation.org:
On Sun, Jun 14, 2015 at 12:49:55PM -0300, Cristian Rodríguez wrote:
El jun. 14, 2015 10:21, cee1 fykc...@gmail.com escribió:
Hi all,
Why we need to read/save random seed? Can it be read from /dev/random each
time?
Because
On Wed, 17.06.15 17:38, Reindl Harald (h.rei...@thelounge.net) wrote:
* the purpose of systemd-random-seed.service is to seed
/dev/random realy at boot so that other services like
sshd, vpn, webservers have a random source
* seed /dev/random *followed* by suck it out again like
has
Am 17.06.2015 um 17:08 schrieb cee1:
2015-06-17 22:03 GMT+08:00 Lennart Poettering lenn...@poettering.net:
On Wed, 17.06.15 20:21, cee1 (fykc...@gmail.com) wrote:
What I means is:
1. Load a saved seed to /dev/urandom.
2. The service read /dev/random, which will block until kernel thinks
2015-06-17 16:40 GMT+08:00 Reindl Harald h.rei...@thelounge.net:
Am 17.06.2015 um 05:06 schrieb cee1:
2015-06-16 0:21 GMT+08:00 Lennart Poettering lenn...@poettering.net:
On Mon, 15.06.15 23:33, cee1 (fykc...@gmail.com) wrote:
Hi,
I maybe got confused.
First,
Am 17.06.2015 um 14:21 schrieb cee1:
2015-06-17 16:40 GMT+08:00 Reindl Harald h.rei...@thelounge.net:
systemd-random-seed.service will load the seed on disk to
/dev/urandom, and save a seed to disk when shutdown, right?
The article at http://www.2uo.de/myths-about-urandom/ suggests us
saving
Am 17.06.2015 um 05:06 schrieb cee1:
2015-06-16 0:21 GMT+08:00 Lennart Poettering lenn...@poettering.net:
On Mon, 15.06.15 23:33, cee1 (fykc...@gmail.com) wrote:
Hi,
I maybe got confused.
First, systemd-random-seed.service will save a seed from
/dev/urandom when shutdown, and load that seed
On Wed, Jun 17, 2015 at 2:28 PM, Reindl Harald h.rei...@thelounge.net wrote:
Am 17.06.2015 um 14:21 schrieb cee1:
2015-06-17 16:40 GMT+08:00 Reindl Harald h.rei...@thelounge.net:
systemd-random-seed.service will load the seed on disk to
/dev/urandom, and save a seed to disk when shutdown,
On Wed, 17.06.15 16:04, Reindl Harald (h.rei...@thelounge.net) wrote:
Please keep such comments to yourself or you will be
moderated again
you threaten everytime you personally don't agree is a better style?
Congratulations, I just put you back on moderation.
Lennart
--
Lennart
On Wed, 17.06.15 20:21, cee1 (fykc...@gmail.com) wrote:
2015-06-17 16:40 GMT+08:00 Reindl Harald h.rei...@thelounge.net:
Am 17.06.2015 um 05:06 schrieb cee1:
2015-06-16 0:21 GMT+08:00 Lennart Poettering lenn...@poettering.net:
On Mon, 15.06.15 23:33, cee1 (fykc...@gmail.com) wrote:
Am 17.06.2015 um 14:51 schrieb Kay Sievers:
On Wed, Jun 17, 2015 at 2:28 PM, Reindl Harald h.rei...@thelounge.net wrote:
Am 17.06.2015 um 14:21 schrieb cee1:
2015-06-17 16:40 GMT+08:00 Reindl Harald h.rei...@thelounge.net:
systemd-random-seed.service will load the seed on disk to
2015-06-17 22:03 GMT+08:00 Lennart Poettering lenn...@poettering.net:
On Wed, 17.06.15 20:21, cee1 (fykc...@gmail.com) wrote:
What I means is:
1. Load a saved seed to /dev/urandom.
2. The service read /dev/random, which will block until kernel thinks
there's enough entropy - then the Random
On Wed, 17.06.15 23:08, cee1 (fykc...@gmail.com) wrote:
2015-06-17 22:03 GMT+08:00 Lennart Poettering lenn...@poettering.net:
On Wed, 17.06.15 20:21, cee1 (fykc...@gmail.com) wrote:
What I means is:
1. Load a saved seed to /dev/urandom.
2. The service read /dev/random, which will block
2015-06-17 23:15 GMT+08:00 Lennart Poettering lenn...@poettering.net:
That don't mean blocking boot, but a service, let's say
systemd-random-seed.service:
1. systemd-random-seed.service loads a seed from disk to /dev/urandom
2. systemd-random-seed.service tells systemd I'm ready (sd_notify())
2015-06-17 23:38 GMT+08:00 Reindl Harald h.rei...@thelounge.net:
Am 17.06.2015 um 17:08 schrieb cee1:
2015-06-17 22:03 GMT+08:00 Lennart Poettering lenn...@poettering.net:
On Wed, 17.06.15 20:21, cee1 (fykc...@gmail.com) wrote:
What I means is:
1. Load a saved seed to /dev/urandom.
2.
B1;4002;0cOn Wed, 17.06.15 23:45, cee1 (fykc...@gmail.com) wrote:
2015-06-17 23:15 GMT+08:00 Lennart Poettering lenn...@poettering.net:
That don't mean blocking boot, but a service, let's say
systemd-random-seed.service:
1. systemd-random-seed.service loads a seed from disk to /dev/urandom
On Thu, 18.06.15 00:00, cee1 (fykc...@gmail.com) wrote:
First it seeds /dev/urandom
Second, seed /dev/random will not increase the entropy without using
ioctl (please see
https://www.mail-archive.com/systemd-devel@lists.freedesktop.org/msg32555.html)
Though, some other services may read
2015-06-16 0:21 GMT+08:00 Lennart Poettering lenn...@poettering.net:
On Mon, 15.06.15 23:33, cee1 (fykc...@gmail.com) wrote:
Hi,
I maybe got confused.
First, systemd-random-seed.service will save a seed from
/dev/urandom when shutdown, and load that seed to /dev/urandom when
next boot up.
Hi,
I maybe got confused.
First, systemd-random-seed.service will save a seed from
/dev/urandom when shutdown, and load that seed to /dev/urandom when
next boot up.
My questions are:
1. Can we not save a seed, but load a seed that is read from **
/dev/random ** to ** /dev/urandom **?
2. Saving
On Mon, 15.06.15 23:33, cee1 (fykc...@gmail.com) wrote:
Hi,
I maybe got confused.
First, systemd-random-seed.service will save a seed from
/dev/urandom when shutdown, and load that seed to /dev/urandom when
next boot up.
My questions are:
1. Can we not save a seed, but load a seed
On Mon, Jun 15, 2015 at 12:33 PM, cee1 fykc...@gmail.com wrote:
Hi,
I maybe got confused.
First, systemd-random-seed.service will save a seed from
/dev/urandom when shutdown, and load that seed to /dev/urandom when
next boot up.
My questions are:
1. Can we not save a seed, but load a
On Sun, Jun 14, 2015 at 4:21 PM, cee1 fykc...@gmail.com wrote:
Hi all,
Why we need to read/save random seed? Can it be read from /dev/random each
time?
Well, that would sorta defeat the point.
The random seed isn't for systemd's use. On boot, it is *written to*
/dev/random,
not read from
Hi all,
Why we need to read/save random seed? Can it be read from /dev/random each time?
--
Regards,
- cee1
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systemd-devel@lists.freedesktop.org
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On Sun, 14.06.15 14:11, Cristian Rodríguez (cristian.rodrig...@opensuse.org)
wrote:
On Sun, Jun 14, 2015 at 1:43 PM, Greg KH gre...@linuxfoundation.org wrote:
On Sun, Jun 14, 2015 at 12:49:55PM -0300, Cristian Rodríguez wrote:
El jun. 14, 2015 10:21, cee1 fykc...@gmail.com escribió:
El jun. 14, 2015 10:21, cee1 fykc...@gmail.com escribió:
Hi all,
Why we need to read/save random seed? Can it be read from /dev/random
each time?
Because the kernel is borked and still is needs to be fed of entropy at
system startup by user space. Please read the random man page.
I agree we
On Sun, Jun 14, 2015 at 12:49:55PM -0300, Cristian Rodríguez wrote:
El jun. 14, 2015 10:21, cee1 fykc...@gmail.com escribió:
Hi all,
Why we need to read/save random seed? Can it be read from /dev/random each
time?
Because the kernel is borked and still is needs to be fed of entropy
On Sun, Jun 14, 2015 at 1:43 PM, Greg KH gre...@linuxfoundation.org wrote:
On Sun, Jun 14, 2015 at 12:49:55PM -0300, Cristian Rodríguez wrote:
El jun. 14, 2015 10:21, cee1 fykc...@gmail.com escribió:
Hi all,
Why we need to read/save random seed? Can it be read from /dev/random each
On Sun, Jun 14, 2015 at 02:11:53PM -0300, Cristian Rodríguez wrote:
On Sun, Jun 14, 2015 at 1:43 PM, Greg KH gre...@linuxfoundation.org wrote:
On Sun, Jun 14, 2015 at 12:49:55PM -0300, Cristian Rodríguez wrote:
El jun. 14, 2015 10:21, cee1 fykc...@gmail.com escribió:
Hi all,
Why
On Sun, Jun 14, 2015 at 6:45 PM, Greg KH gre...@linuxfoundation.org wrote:
On Sun, Jun 14, 2015 at 02:11:53PM -0300, Cristian Rodríguez wrote:
On Sun, Jun 14, 2015 at 1:43 PM, Greg KH gre...@linuxfoundation.org wrote:
On Sun, Jun 14, 2015 at 12:49:55PM -0300, Cristian Rodríguez wrote:
El
On Jun 14, 2015 10:11 AM, Cristian Rodríguez
cristian.rodrig...@opensuse.org wrote:
On Sun, Jun 14, 2015 at 1:43 PM, Greg KH gre...@linuxfoundation.org
wrote:
On Sun, Jun 14, 2015 at 12:49:55PM -0300, Cristian Rodríguez wrote:
Las time I checked , it required this userspace help even when
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