Re: [Cryptography] Thoughts on hardware randomness sources

2013-09-14 Thread Marcus D. Leech
On 09/13/2013 11:32 PM, Jerry Leichter wrote: On Sep 12, 2013, at 11:06 PM, Marcus D. Leech wrote: There are a class of hyper-cheap USB audio dongles with very uncomplicated mixer models. A small flotilla of those might get you some fault-tolerance. My main thought on such things relates to

Re: [Cryptography] Thoughts on hardware randomness sources

2013-09-14 Thread Jerry Leichter
On Sep 12, 2013, at 11:06 PM, Marcus D. Leech wrote: There are a class of hyper-cheap USB audio dongles with very uncomplicated mixer models. A small flotilla of those might get you some fault-tolerance. My main thought on such things relates to servers, where power consumption isn't

Re: [Cryptography] Thoughts on hardware randomness sources

2013-09-14 Thread Bill Stewart
At 08:32 PM 9/13/2013, Jerry Leichter wrote: If by server you mean one of those things in a rack at Amazon or Google or Rackspace - power consumption, and its consequence, cooling - is *the* major issue these days. Also, the servers used in such data centers don't have multiple free USB

Re: [Cryptography] Thoughts on hardware randomness sources

2013-09-13 Thread Marcus D. Leech
On 09/12/2013 10:38 PM, Thor Lancelot Simon wrote: The audio subsystem actually posed *two* obvious opportunities: amplifier noise from channels with high final stage gain but connected by a mixer to muted inputs, and clock skew between system timers and audio sample clocks. The former

Re: [Cryptography] Thoughts on hardware randomness sources

2013-09-10 Thread Sandy Harris
On Tue, Sep 10, 2013 at 10:59 AM, Marcus D. Leech mle...@ripnet.com wrote: I wonder what people's opinions are on things like the randomsound daemon that is available for Linux. I have not looked at that. A well thought out well documented RNG based on a sound card is:

Re: [Cryptography] Thoughts on hardware randomness sources

2013-09-10 Thread Marcus D. Leech
On 09/10/2013 12:04 PM, Rob Kendrick wrote: I wonder what people's opinions are on things like the randomsound daemon that is available for Linux. Daniel Silverstone, the author, specifically advises people to not use it. :) I haven't actually looked at the code. Conceptually, anything with an

Re: [Cryptography] Thoughts on hardware randomness sources

2013-09-10 Thread Rob Kendrick
On Tue, Sep 10, 2013 at 10:59:37AM -0400, Marcus D. Leech wrote: I wonder what people's opinions are on things like the randomsound daemon that is available for Linux. Daniel Silverstone, the author, specifically advises people to not use it. :) B.