"Anything that needs lots of random bits for generating things like session keys will clearly benefit from a device like this. Some systems have other hardware sources of random numbers, but I was impressed by the attention to detail the guys have put into this little widget, and the work they've done to make it integrate so well with Debian. Very cool." Bdale Garbee, in his blog.
"First impressions are, this is pretty impressive. It hovers very close to 4096 bytes at all times. There is very little jitter." Andy Smith in his two-part series "Adventures in Entropy" which deals with entropy exhaustion and jitter with virtual machines. Lots of graphs!
"Short version is you plug it in, install the ekeyd package and even on a hardened installation the entropy pool never deviates from full up..." A Gentoo user on the Hardened Gentoo mailing list.
"It has been working so well that I haven't really had a big need to blog about it. Plug it in and watch /proc/sys/kernel/random/entropy_avail never empty." Tollef Fog Heen in his blog.
"The developers of the entropy key were clever and instead of making programs write new code to use the key, they made a program that reads the key and feeds the Linux entropy pool. Thus, anything that uses /dev/random (like
gpg) benefits without code changes." David Shaw on the GPG users' mailing list.
"When the data is then autocorrelated and displayed using our imaging techniques, it is shown for our entropy key data that the behavior is random as no structures are evident in the graphs. Numerically, no more than 2% of
the data shows significant correlation." Chris Bresten, Charles Poole: Numerical Characterization of Entropy Quality.
"And thanks to the guys at entropykey.co.uk, true hardware RNGs don't even cost much and are Linux-friendly (I don't think it's *possible* to be more Debian-friendly than they are) and seriously well-designed (hardware and software both)." Comment poster on Linux Weekly News.
"It works so well, I'd forgotton I'd got one installed." Colin Tuckley
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Bdale Garbee, in his blog.
Andy Smith in his two-part series "Adventures in Entropy" which deals with entropy exhaustion and jitter with virtual machines. Lots of graphs!
A Gentoo user on the Hardened Gentoo mailing list.
Tollef Fog Heen in his blog.
David Shaw on the GPG users' mailing list.
Chris Bresten, Charles Poole: Numerical Characterization of Entropy Quality.
Comment poster on Linux Weekly News.
Colin Tuckley