Re: SSD drives

2013-01-03 Thread Elazar Leibovich
$ cat /dev/urandom >/dev/null kernel panic: radiation higher than the maximal safe amount On Thu, Jan 3, 2013 at 5:21 PM, Nadav Har'El wrote: > On Thu, Jan 03, 2013, Michael Shiloh wrote about "Re: SSD drives": > > perhaps they use radioactive decay? Scroll down to "Geiger Counter" at: > > There

Re: SSD drives

2013-01-03 Thread E.S. Rosenberg
I don't know if Intel uses this but as I recall it VIA claims to use certain quantum effects as sources of entropy: http://www.via.com.tw/en/initiatives/padlock/hardware.jsp 2013/1/3 Nadav Har'El : > On Thu, Jan 03, 2013, Michael Shiloh wrote about "Re: SSD drives": >> perhaps they use radioactive

Re: SSD drives

2013-01-03 Thread Michael Shiloh
On 01/03/2013 07:21 AM, Nadav Har'El wrote: On Thu, Jan 03, 2013, Michael Shiloh wrote about "Re: SSD drives": perhaps they use radioactive decay? Scroll down to "Geiger Counter" at: There's an inherent conflict between the number of bits of randomness you can get out of this process, and th

Re: SSD drives

2013-01-03 Thread Nadav Har'El
On Thu, Jan 03, 2013, Michael Shiloh wrote about "Re: SSD drives": > perhaps they use radioactive decay? Scroll down to "Geiger Counter" at: There's an inherent conflict between the number of bits of randomness you can get out of this process, and the safety of the operator ;-) -- Nadav Har'El

Re: SSD drives

2013-01-03 Thread Michael Shiloh
On 01/03/2013 05:25 AM, Oleg Goldshmidt wrote: There is an additional instruction, RDSEED, that is "supposedly" truly random, but, as I mentioned, I have not seen an explanation of why it is or how it works. perhaps they use radioactive decay? Scroll down to "Geiger Counter" at: http://www.

Re: RNG (was: Re: SSD drives)

2013-01-03 Thread Oleg Goldshmidt
On Thu, Jan 3, 2013 at 1:50 PM, Nadav Har'El wrote: > On Thu, Jan 03, 2013, Yedidyah Bar-David wrote about "RNG (was: Re: SSD > drives)": >> RDRAND is also a PRNG, reseeded at most once every 1022 calls, way >> faster than /dev/urandom (they state 500MiB per second), and you do not >> have its so

Re: SSD drives

2013-01-03 Thread Elazar Leibovich
On Thu, Jan 3, 2013 at 3:13 PM, Oleg Goldshmidt wrote: > > I'd say that it is up to Intel to prove that their TRNG design is > truly non-deterministic. Um, but in Intel's case, they at least *tried* to prove that their TRNG is good enough. I don't think WD tries to make its seek times very rand

Re: SSD drives

2013-01-03 Thread Oleg Goldshmidt
On Thu, Jan 3, 2013 at 1:45 PM, Nadav Har'El wrote: > The whole point of the hardware random number generator is that it is > *not* a PRNG, but rather some special hardware which supposedly uses > sources of randomness (e.g., heat) not normally available for software. "Supposedly" is the operati

Re: SSD drives

2013-01-03 Thread Oleg Goldshmidt
On Thu, Jan 3, 2013 at 12:31 PM, Elazar Leibovich wrote: > Instead of assuming, you should've used Google ;-) Yes, but I am at work. ;-) > > To my (limited, I'm far from a crypto expert) understanding, Intel of course > also seeds the PRNG with a true random number generator, and it complies > N

Re: RNG (was: Re: SSD drives)

2013-01-03 Thread Nadav Har'El
On Thu, Jan 03, 2013, Elazar Leibovich wrote about "Re: RNG (was: Re: SSD drives)": > If you're a gateway that does SSL (and thus need to do many kex)? Like F5 This doesn't (I think) explain why you would need to do 100 million each second. -- Nadav Har'El| Thursday

Re: RNG (was: Re: SSD drives)

2013-01-03 Thread Elazar Leibovich
If you're a gateway that does SSL (and thus need to do many kex)? Like F5 On Thu, Jan 3, 2013 at 1:50 PM, Nadav Har'El wrote: > On Thu, Jan 03, 2013, Yedidyah Bar-David wrote about "RNG (was: Re: SSD > drives)": > > RDRAND is also a PRNG, reseeded at most once every 1022 calls, way > > faster th

Re: RNG (was: Re: SSD drives)

2013-01-03 Thread Nadav Har'El
On Thu, Jan 03, 2013, Yedidyah Bar-David wrote about "RNG (was: Re: SSD drives)": > RDRAND is also a PRNG, reseeded at most once every 1022 calls, way > faster than /dev/urandom (they state 500MiB per second), and you do not > have its source code... Can anyone give me an example of why on earth

Re: SSD drives

2013-01-03 Thread Nadav Har'El
On Thu, Jan 03, 2013, Oleg Goldshmidt wrote about "Re: SSD drives": > 2) I would not only be worried about an NSA backdoor in Intel CPUs, > but also about the degree of randomness of their generator. If it is > flawed (and it is notoriously difficult to do a really good PRNG - I > assume it is a PR

Re: SSD drives

2013-01-03 Thread Elazar Leibovich
Instead of assuming, you should've used Google ;-) To my (limited, I'm far from a crypto expert) understanding, Intel of course also seeds the PRNG with a true random number generator, and it complies NIST standard for randomness. http://software.intel.com/en-us/blogs/2012/11/17/the-difference-be

RNG (was: Re: SSD drives)

2013-01-03 Thread Yedidyah Bar-David
On Thu, Jan 03, 2013 at 11:57:01AM +0200, Oleg Goldshmidt wrote: > On Thu, Jan 3, 2013 at 10:53 AM, Baruch Siach wrote: > > Hi Oleg, > > > > On Sun, Dec 30, 2012 at 10:40:31AM +0200, Oleg Goldshmidt wrote: > >> On Sun, Dec 30, 2012 at 8:46 AM, shimi wrote: > >> > I really don't think so. SSDs (IM

Re: SSD drives

2013-01-03 Thread Oleg Goldshmidt
On Thu, Jan 3, 2013 at 10:53 AM, Baruch Siach wrote: > Hi Oleg, > > On Sun, Dec 30, 2012 at 10:40:31AM +0200, Oleg Goldshmidt wrote: >> On Sun, Dec 30, 2012 at 8:46 AM, shimi wrote: >> > I really don't think so. SSDs (IMHO) makes computer much faster due to the >> > VERY low seek time - the time

can you suggest a docbook-friendly editor for ubuntu?

2013-01-03 Thread Michael Shiloh
i'm new to docbook but want to try using it for all my teaching material. i know i can edit straight xml (i'm very comfortable with this) but i like the idea of a wysiwyg editor of some kind. suggestions? ___ Linux-il mailing list Linux-il@cs.huji.a

Re: SSD drives

2013-01-03 Thread Baruch Siach
Hi Oleg, On Sun, Dec 30, 2012 at 10:40:31AM +0200, Oleg Goldshmidt wrote: > On Sun, Dec 30, 2012 at 8:46 AM, shimi wrote: > > I really don't think so. SSDs (IMHO) makes computer much faster due to the > > VERY low seek time - the time it takes you to get a block. Compare 10-20ms > > with ~0.1ms.