how to make /dev/random work?

how to make /dev/random work?

[loody]

Dear all:
I made linux running on Mips machine.
Right now I found the /dev/random doesn't work properly, since I use
"dd if=/dev/random of=/tmp/random.txt", it stops working.
If I use "cat /dev/random", it will not pop out anything.

Is there any setting I forget while make menuconfig or should i add
another driver for /dev/random such that I can make /dev/random work?
appreciate your help,
miloody

Re: how to make /dev/random work?

[Florian Fainelli]

Hi,

Le Friday 28 August 2009 08:41:41 loody, vous avez écrit :
> Dear all:
> I made linux running on Mips machine.
> Right now I found the /dev/random doesn't work properly, since I use
> "dd if=/dev/random of=/tmp/random.txt", it stops working.
> If I use "cat /dev/random", it will not pop out anything.
>
> Is there any setting I forget while make menuconfig or should i add
> another driver for /dev/random such that I can make /dev/random work?
> appreciate your help,

Could it be that your system does not generate enough entropy so you end up in 
having nothing going out from /dev/random ? In case your system has very 
little entropy, better use /dev/urandom.
-- 
Best regards, Florian Fainelli
Email: florian@openwrt.org
Web: http://openwrt.org
IRC: [florian] on irc.freenode.net
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