<link>http://people.skolelinux.org/pere/blog/</link>
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+ <item>
+ <title>Updated sales number for my Free Culture paper editions</title>
+ <link>http://people.skolelinux.org/pere/blog/Updated_sales_number_for_my_Free_Culture_paper_editions.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Updated_sales_number_for_my_Free_Culture_paper_editions.html</guid>
+ <pubDate>Mon, 12 Jun 2017 11:40:00 +0200</pubDate>
+ <description><p>It is pleasing to see that the work we put down in publishing new
+editions of the classic <a href="http://www.free-culture.cc/">Free
+Culture book</a> by the founder of the Creative Commons movement,
+Lawrence Lessig, is still being appreciated. I had a look at the
+latest sales numbers for the paper edition today. Not too impressive,
+but happy to see some buyers still exist. All the revenue from the
+books is sent to the <a href="https://creativecommons.org/">Creative
+Commons Corporation</a>, and they receive the largest cut if you buy
+directly from Lulu. Most books are sold via Amazon, with Ingram
+second and only a small fraction directly from Lulu. The ebook
+edition is available for free from
+<a href="https://github.com/petterreinholdtsen/free-culture-lessig">Github</a>.</p>
+
+<table border="0">
+<tr><th rowspan="2" valign="bottom">Title / language</th><th colspan="3">Quantity</th></tr>
+<tr><th>2016 jan-jun</th><th>2016 jul-dec</th><th>2017 jan-may</th></tr>
+
+<tr>
+ <td><a href="http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html">Culture Libre / French</a></td>
+ <td align="right">3</td>
+ <td align="right">6</td>
+ <td align="right">15</td>
+</tr>
+
+<tr>
+ <td><a href="http://www.lulu.com/shop/lawrence-lessig/fri-kultur/paperback/product-22441576.html">Fri kultur / Norwegian</a></td>
+ <td align="right">7</td>
+ <td align="right">1</td>
+ <td align="right">0</td>
+</tr>
+
+<tr>
+ <td><a href="http://www.lulu.com/shop/lawrence-lessig/free-culture/paperback/product-22440520.html">Free Culture / English</a></td>
+ <td align="right">14</td>
+ <td align="right">27</td>
+ <td align="right">16</td>
+</tr>
+
+<tr>
+ <td>Total</td>
+ <td align="right">24</td>
+ <td align="right">34</td>
+ <td align="right">31</td>
+</tr>
+
+</table>
+
+<p>A bit sad to see the low sales number on the Norwegian edition, and
+a bit surprising the English edition still selling so well.</p>
+
+<p>If you would like to translate and publish the book in your native
+language, I would be happy to help make it happen. Please get in
+touch.</p>
+</description>
+ </item>
+
+ <item>
+ <title>Release 0.1.1 of free software archive system Nikita announced</title>
+ <link>http://people.skolelinux.org/pere/blog/Release_0_1_1_of_free_software_archive_system_Nikita_announced.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Release_0_1_1_of_free_software_archive_system_Nikita_announced.html</guid>
+ <pubDate>Sat, 10 Jun 2017 00:40:00 +0200</pubDate>
+ <description><p>I am very happy to report that the
+<a href="https://github.com/hiOA-ABI/nikita-noark5-core">Nikita Noark 5
+core project</a> tagged its second release today. The free software
+solution is an implementation of the Norwegian archive standard Noark
+5 used by government offices in Norway. These were the changes in
+version 0.1.1 since version 0.1.0 (from NEWS.md):
+
+<ul>
+
+ <li>Continued work on the angularjs GUI, including document upload.</li>
+ <li>Implemented correspondencepartPerson, correspondencepartUnit and
+ correspondencepartInternal</li>
+ <li>Applied for coverity coverage and started submitting code on
+ regualr basis.</li>
+ <li>Started fixing bugs reported by coverity</li>
+ <li>Corrected and completed HATEOAS links to make sure entire API is
+ available via URLs in _links.</li>
+ <li>Corrected all relation URLs to use trailing slash.</li>
+ <li>Add initial support for storing data in ElasticSearch.</li>
+ <li>Now able to receive and store uploaded files in the archive.</li>
+ <li>Changed JSON output for object lists to have relations in _links.</li>
+ <li>Improve JSON output for empty object lists.</li>
+ <li>Now uses correct MIME type application/vnd.noark5-v4+json.</li>
+ <li>Added support for docker container images.</li>
+ <li>Added simple API browser implemented in JavaScript/Angular.</li>
+ <li>Started on archive client implemented in JavaScript/Angular.</li>
+ <li>Started on prototype to show the public mail journal.</li>
+ <li>Improved performance by disabling Sprint FileWatcher.</li>
+ <li>Added support for 'arkivskaper', 'saksmappe' and 'journalpost'.</li>
+ <li>Added support for some metadata codelists.</li>
+ <li>Added support for Cross-origin resource sharing (CORS).</li>
+ <li>Changed login method from Basic Auth to JSON Web Token (RFC 7519)
+ style.</li>
+ <li>Added support for GET-ing ny-* URLs.</li>
+ <li>Added support for modifying entities using PUT and eTag.</li>
+ <li>Added support for returning XML output on request.</li>
+ <li>Removed support for English field and class names, limiting ourself
+ to the official names.</li>
+ <li>...</li>
+
+</ul>
+
+<p>If this sound interesting to you, please contact us on IRC (#nikita
+on irc.freenode.net) or email
+(<a href="https://lists.nuug.no/mailman/listinfo/nikita-noark">nikita-noark
+mailing list).</p>
+</description>
+ </item>
+
+ <item>
+ <title>Idea for storing trusted timestamps in a Noark 5 archive</title>
+ <link>http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html</guid>
+ <pubDate>Wed, 7 Jun 2017 21:40:00 +0200</pubDate>
+ <description><p><em>This is a copy of
+<a href="https://lists.nuug.no/pipermail/nikita-noark/2017-June/000297.html">an
+email I posted to the nikita-noark mailing list</a>. Please follow up
+there if you would like to discuss this topic. The background is that
+we are making a free software archive system based on the Norwegian
+<a href="https://www.arkivverket.no/forvaltning-og-utvikling/regelverk-og-standarder/noark-standarden">Noark
+5 standard</a> for government archives.</em></p>
+
+<p>I've been wondering a bit lately how trusted timestamps could be
+stored in Noark 5.
+<a href="https://en.wikipedia.org/wiki/Trusted_timestamping">Trusted
+timestamps</a> can be used to verify that some information
+(document/file/checksum/metadata) have not been changed since a
+specific time in the past. This is useful to verify the integrity of
+the documents in the archive.</p>
+
+<p>Then it occured to me, perhaps the trusted timestamps could be
+stored as dokument variants (ie dokumentobjekt referered to from
+dokumentbeskrivelse) with the filename set to the hash it is
+stamping?</p>
+
+<p>Given a "dokumentbeskrivelse" with an associated "dokumentobjekt",
+a new dokumentobjekt is associated with "dokumentbeskrivelse" with the
+same attributes as the stamped dokumentobjekt except these
+attributes:</p>
+
+<ul>
+
+<li>format -> "RFC3161"
+<li>mimeType -> "application/timestamp-reply"
+<li>formatDetaljer -> "&lt;source URL for timestamp service&gt;"
+<li>filenavn -> "&lt;sjekksum&gt;.tsr"
+
+</ul>
+
+<p>This assume a service following
+<a href="https://tools.ietf.org/html/rfc3161">IETF RFC 3161</a> is
+used, which specifiy the given MIME type for replies and the .tsr file
+ending for the content of such trusted timestamp. As far as I can
+tell from the Noark 5 specifications, it is OK to have several
+variants/renderings of a dokument attached to a given
+dokumentbeskrivelse objekt. It might be stretching it a bit to make
+some of these variants represent crypto-signatures useful for
+verifying the document integrity instead of representing the dokument
+itself.</p>
+
+<p>Using the source of the service in formatDetaljer allow several
+timestamping services to be used. This is useful to spread the risk
+of key compromise over several organisations. It would only be a
+problem to trust the timestamps if all of the organisations are
+compromised.</p>
+
+<p>The following oneliner on Linux can be used to generate the tsr
+file. $input is the path to the file to checksum, and $sha256 is the
+SHA-256 checksum of the file (ie the "<sjekksum>.tsr" value mentioned
+above).</p>
+
+<p><blockquote><pre>
+openssl ts -query -data "$inputfile" -cert -sha256 -no_nonce \
+ | curl -s -H "Content-Type: application/timestamp-query" \
+ --data-binary "@-" http://zeitstempel.dfn.de > $sha256.tsr
+</pre></blockquote></p>
+
+<p>To verify the timestamp, you first need to download the public key
+of the trusted timestamp service, for example using this command:</p>
+
+<p><blockquote><pre>
+wget -O ca-cert.txt \
+ https://pki.pca.dfn.de/global-services-ca/pub/cacert/chain.txt
+</pre></blockquote></p>
+
+<p>Note, the public key should be stored alongside the timestamps in
+the archive to make sure it is also available 100 years from now. It
+is probably a good idea to standardise how and were to store such
+public keys, to make it easier to find for those trying to verify
+documents 100 or 1000 years from now. :)</p>
+
+<p>The verification itself is a simple openssl command:</p>
+
+<p><blockquote><pre>
+openssl ts -verify -data $inputfile -in $sha256.tsr \
+ -CAfile ca-cert.txt -text
+</pre></blockquote></p>
+
+<p>Is there any reason this approach would not work? Is it somehow against
+the Noark 5 specification?</p>
+</description>
+ </item>
+
<item>
<title>Når nynorskoversettelsen svikter til eksamen...</title>
<link>http://people.skolelinux.org/pere/blog/N_r_nynorskoversettelsen_svikter_til_eksamen___.html</link>
</description>
</item>
- <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><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 here in Norway. :)</p>
-
-<p>Update: The dongle was presented at Debconf last year. You might
-find <a href="https://debconf16.debconf.org/talks/94/">the talk
-recording illuminating</a>. It explains exactly what the source of
-randomness is, if you are unable to spot it from the schema drawing
-available from the ChaosKey web site linked at the start of this blog
-post.</p>
-</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>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html</guid>
- <pubDate>Tue, 21 Feb 2017 00:20:00 +0100</pubDate>
- <description><p>I just noticed
-<a href="http://www.arkivrad.no/aktuelt/riksarkivarens-forskrift-pa-horing">the
-new Norwegian proposal for archiving rules in the goverment</a> list
-<a href="http://www.ecma-international.org/publications/standards/Ecma-376.htm">ECMA-376</a>
-/ ISO/IEC 29500 (aka OOXML) as valid formats to put in long term
-storage. Luckily such files will only be accepted based on
-pre-approval from the National Archive. Allowing OOXML files to be
-used for long term storage might seem like a good idea as long as we
-forget that there are plenty of ways for a "valid" OOXML document to
-have content with no defined interpretation in the standard, which
-lead to a question and an idea.</p>
-
-<p>Is there any tool to detect if a OOXML document depend on such
-undefined behaviour? It would be useful for the National Archive (and
-anyone else interested in verifying that a document is well defined)
-to have such tool available when considering to approve the use of
-OOXML. I'm aware of the
-<a href="https://github.com/arlm/officeotron/">officeotron OOXML
-validator</a>, but do not know how complete it is nor if it will
-report use of undefined behaviour. Are there other similar tools
-available? Please send me an email if you know of any such tool.</p>
-</description>
- </item>
-
- <item>
- <title>Ruling ignored our objections to the seizure of popcorn-time.no (#domstolkontroll)</title>
- <link>http://people.skolelinux.org/pere/blog/Ruling_ignored_our_objections_to_the_seizure_of_popcorn_time_no___domstolkontroll_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Ruling_ignored_our_objections_to_the_seizure_of_popcorn_time_no___domstolkontroll_.html</guid>
- <pubDate>Mon, 13 Feb 2017 21:30:00 +0100</pubDate>
- <description><p>A few days ago, we received the ruling from
-<a href="http://people.skolelinux.org/pere/blog/A_day_in_court_challenging_seizure_of_popcorn_time_no_for__domstolkontroll.html">my
-day in court</a>. The case in question is a challenge of the seizure
-of the DNS domain popcorn-time.no. The ruling simply did not mention
-most of our arguments, and seemed to take everything ØKOKRIM said at
-face value, ignoring our demonstration and explanations. But it is
-hard to tell for sure, as we still have not seen most of the documents
-in the case and thus were unprepared and unable to contradict several
-of the claims made in court by the opposition. We are considering an
-appeal, but it is partly a question of funding, as it is costing us
-quite a bit to pay for our lawyer. If you want to help, please
-<a href="http://www.nuug.no/dns-beslag-donasjon.shtml">donate to the
-NUUG defense fund</a>.</p>
-
-<p>The details of the case, as far as we know it, is available in
-Norwegian from
-<a href="https://www.nuug.no/news/tags/dns-domenebeslag/">the NUUG
-blog</a>. This also include
-<a href="https://www.nuug.no/news/Avslag_etter_rettslig_h_ring_om_DNS_beslaget___vurderer_veien_videre.shtml">the
-ruling itself</a>.</p>
-</description>
- </item>
-
</channel>
</rss>
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