Generated.

[homepage.git] / blog / index.rss

diff --git a/blog/index.rss b/blog/index.rss
index ae743ba3b1c8f7b2d131e323ee8b3d9af1864d13..95965d7f56503c8af577e4e0f1a1337c4f56ddd4 100644 (file)
--- a/blog/index.rss
+++ b/blog/index.rss
@@ -6,6 +6,71 @@
                 <link>http://people.skolelinux.org/pere/blog/</link>
                 <atom:link href="http://people.skolelinux.org/pere/blog/index.rss" rel="self" type="application/rss+xml" />
        
                 <link>http://people.skolelinux.org/pere/blog/</link>
                 <atom:link href="http://people.skolelinux.org/pere/blog/index.rss" rel="self" type="application/rss+xml" />
        

+       <item>
+               <title>Unlimited randomness with the ChaosKey?</title>
+               <link>http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html</link>
+               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html</guid>
+                <pubDate>Wed, 1 Mar 2017 20:50:00 +0100</pubDate>
+               <description>&lt;p&gt;A few days ago I ordered a small batch of
+&lt;a href=&quot;http://altusmetrum.org/ChaosKey/&quot;&gt;the ChaosKey&lt;/a&gt;, 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:&lt;/p&gt;
+
+&lt;blockquote&gt;&lt;pre&gt;
+% 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
+%
+&lt;/pre&gt;&lt;/blockquote&gt;
+
+&lt;p&gt;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:&lt;/p&gt;
+
+&lt;blockquote&gt;&lt;pre&gt;
+% 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
+%
+&lt;/pre&gt;&lt;/blockquote&gt;
+
+&lt;p&gt;Quite the difference. :) I bought a few more than I need, in case
+someone want to buy one her in Norway. :)&lt;/p&gt;
+</description>
+       </item>
+       

        <item>
                <title>Detect OOXML files with undefined behaviour?</title>
                <link>http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html</link>
        <item>
                <title>Detect OOXML files with undefined behaviour?</title>
                <link>http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html</link>


@@ -684,54 +749,5 @@ the mean time I provide an override in isenkram.&lt;/p&gt;
 </description>
        </item>
        
 </description>
        </item>
        

-       <item>
-               <title>Oolite, a life in space as vagabond and mercenary - nice free software</title>
-               <link>http://people.skolelinux.org/pere/blog/Oolite__a_life_in_space_as_vagabond_and_mercenary___nice_free_software.html</link>
-               <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Oolite__a_life_in_space_as_vagabond_and_mercenary___nice_free_software.html</guid>
-                <pubDate>Sun, 11 Dec 2016 11:40:00 +0100</pubDate>
-               <description>&lt;p align=&quot;center&quot;&gt;&lt;img width=&quot;70%&quot; src=&quot;http://people.skolelinux.org/pere/blog/images/2016-12-11-nice-oolite.png&quot;/&gt;&lt;/p&gt;
-
-&lt;p&gt;In my early years, I played
-&lt;a href=&quot;http://wiki.alioth.net/index.php/Classic_Elite&quot;&gt;the epic game
-Elite&lt;/a&gt; on my PC.  I spent many months trading and fighting in
-space, and reached the &#39;elite&#39; fighting status before I moved on.  The
-original Elite game was available on Commodore 64 and the IBM PC
-edition I played had a 64 KB executable.  I am still impressed today
-that the authors managed to squeeze both a 3D engine and details about
-more than 2000 planet systems across 7 galaxies into a binary so
-small.&lt;/p&gt;
-
-&lt;p&gt;I have known about &lt;a href=&quot;http://www.oolite.org/&quot;&gt;the free
-software game Oolite inspired by Elite&lt;/a&gt; for a while, but did not
-really have time to test it properly until a few days ago.  It was
-great to discover that my old knowledge about trading routes were
-still valid.  But my fighting and flying abilities were gone, so I had
-to retrain to be able to dock on a space station.  And I am still not
-able to make much resistance when I am attacked by pirates, so I
-bougth and mounted the most powerful laser in the rear to be able to
-put up at least some resistance while fleeing for my life. :)&lt;/p&gt;
-
-&lt;p&gt;When playing Elite in the late eighties, I had to discover
-everything on my own, and I had long lists of prices seen on different
-planets to be able to decide where to trade what.  This time I had the
-advantages of the
-&lt;a href=&quot;http://wiki.alioth.net/index.php/Main_Page&quot;&gt;Elite wiki&lt;/a&gt;,
-where information about each planet is easily available with common
-price ranges and suggested trading routes.  This improved my ability
-to earn money and I have been able to earn enough to buy a lot of
-useful equipent in a few days.  I believe I originally played for
-months before I could get a docking computer, while now I could get it
-after less then a week.&lt;/p&gt;
-
-&lt;p&gt;If you like science fiction and dreamed of a life as a vagabond in
-space, you should try out Oolite.  It is available for Linux, MacOSX
-and Windows, and is included in Debian and derivatives since 2011.&lt;/p&gt;
-
-&lt;p&gt;As usual, if you use Bitcoin and want to show your support of my
-activities, please send Bitcoin donations to my address
-&lt;b&gt;&lt;a href=&quot;bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&amp;label=PetterReinholdtsenBlog&quot;&gt;15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&lt;/a&gt;&lt;/b&gt;.&lt;/p&gt;
-</description>
-       </item>
-       

         </channel>
 </rss>
         </channel>
 </rss>