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Ed W <lists@××××××××××.com> 2010-03-25 20:34: |
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> On 25/03/2010 20:11, Rob Kendrick wrote: |
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>> ... |
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<snip/> |
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> I noticed a munin script in the ekeyd download - haven't tried it, but |
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> the quantity of variables you can monitor from the device seemed quite |
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> impressive. Who would have thought you would have wanted to graph the |
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> temperature of your random number generator, but for those who do, you |
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> are in luck... |
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|
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Here's another graphing tool I started using since whoever started this |
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thread got me hooked on the subject :) |
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http://collectd.org/wiki/index.php/Plugin:Entropy |
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|
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Things are much worse, even for physical machines, than I originally |
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suspected, so I'm now thinking about trying to setup something like this |
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in conjunction with both the entropy key and the timer_entropyd so that |
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I can provide an entropy service to various clients. |
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http://www.vanheusden.com/entropybroker/ |
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|
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This probably won't actually happen until some distant point in the |
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future, but I'm especially interested in getting it to virtual machines. |
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Unfortunately, from what I can find there's no nice interface between |
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the host's rng and the vm for vmware esx like there is for kvm (eg: |
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virtio_rng). Anyone know of one? |
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|
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With the entropy broker the thing I'm not totally clear on is how |
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entropy bits transferred over the network (presumably without encryption |
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as that might require entropy) would be worthwhile entropy? What makes |
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it different from the situation where you're using the network device |
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interrupts as an source of entropy? Couldn't both be observable? |
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|
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Another question - I keep seeing people suggesting to hook rngd (from |
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rng-tools) up to /dev/urandom. Doesn't that just feed your system |
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entropy with an prng most of the time? I feel like this just gives the |
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illusion of a decent sized entropy pool. Might as well hook your app up |
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to /dev/urandom instead, correct? |
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|
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In any case, waiting anxiously for delivery of my entropy key so I can |
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start playing. |
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|
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Cheers, |
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Brian |