[lkml]   [2001]   [Apr]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Sources of entropy - /dev/random problem for network servers
Alex Bligh - linux-kernel wrote:
> The machine in question is locked in a data center (can't be
> the only one) and thus sees none of the former two. IDE Entropy
> comes from executed IDE commands. The disk is physically largely
> inactive due to caching. But there's plenty of network traffic
> which should generate IRQs.

Use a hardware random number generator if you need a lot of entropy.
The i810 RNG driver and userspace tools at provide an example for an
implementation, if your hardware is not i8xx.

> However, only 3 drivers in drivers/net actually set
> SA_SAMPLE_RANDOM when calling request_irq(). I believe
> all of them should.

No, because an attacker can potentially control input and make it


Jeff Garzik | Sam: "Mind if I drive?"
Building 1024 | Max: "Not if you don't mind me clawing at the dash
MandrakeSoft | and shrieking like a cheerleader."
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:24    [W:0.041 / U:19.368 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site