From 64bcbca0e24d51f0ec5184a2e63d133c6c875ff2 Mon Sep 17 00:00:00 2001
From: Petter Reinholdtsen <pere@hungry.com>
Date: Wed, 1 Mar 2017 20:48:05 +0100
Subject: [PATCH] New post about chaoskey.

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 blog/data/2017-03-01-chaoskey.txt | 61 +++++++++++++++++++++++++++++++
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 create mode 100644 blog/data/2017-03-01-chaoskey.txt

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+Title: Unlimited randomness with the ChaosKey?
+Tags: english, debian
+Date: 2017-03-01 20:50
+
+<p>A few days ago I ordered a small batch of
+<a href="http://altusmetrum.org/ChaosKey/">the ChaosKey</a>, a small
+USB dongle for generating entropy created by Bdale Garbee and Keith
+Packard.  Yesterday it arrived, and I am very happy to report that it
+work great!  According to its designers, to get it to work out of the
+box, you need the Linux kernel version 4.1 or later.  I tested on a
+Debian Stretch machine (kernel version 4.9), and there it worked just
+fine, increasing the available entropy very quickly.  I wrote a small
+test oneliner to test.  It first print the current entropy level,
+drain /dev/random, and then print the entropy level for five seconds.
+Here is the situation without the ChaosKey inserted:</p>
+
+<blockquote><pre>
+% cat /proc/sys/kernel/random/entropy_avail; \
+  dd bs=1M if=/dev/random of=/dev/null count=1; \
+  for n in $(seq 1 5); do \
+     cat /proc/sys/kernel/random/entropy_avail; \
+     sleep 1; \
+  done
+300
+0+1 oppføringer inn
+0+1 oppføringer ut
+28 byte kopiert, 0,000264565 s, 106 kB/s
+4
+8
+12
+17
+21
+%
+</pre></blockquote>
+
+<p>The entropy level increases by 3-4 every second.  In such case any
+application requiring random bits (like a HTTPS enabled web server)
+will halt and wait for more entrpy.  And here is the situation with
+the ChaosKey inserted:</p>
+
+<blockquote><pre>
+% cat /proc/sys/kernel/random/entropy_avail; \
+  dd bs=1M if=/dev/random of=/dev/null count=1; \
+  for n in $(seq 1 5); do \
+     cat /proc/sys/kernel/random/entropy_avail; \
+     sleep 1; \
+  done
+1079
+0+1 oppføringer inn
+0+1 oppføringer ut
+104 byte kopiert, 0,000487647 s, 213 kB/s
+433
+1028
+1031
+1035
+1038
+%
+<pre><blockquote>
+
+<p>Quite the difference. :) I bought a few more than I need, in case
+someone want to buy one her in Norway. :)</p>
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