blog/Fetching_trusted_timestamps_using_the_rfc3161ng_python_module.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   2           "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
   3 <html xmlns="http://www.w3.org/1999/xhtml" dir="ltr">
   4   <head>
   5     <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
   6     <title>Petter Reinholdtsen: Fetching trusted timestamps using the rfc3161ng python module</title>
   7     <link rel="stylesheet" type="text/css" media="screen" href="http://www.hungry.com/~pere/blog/style.css" />
   8     <link rel="stylesheet" type="text/css" media="screen" href="http://www.hungry.com/~pere/blog/vim.css" />
   9
  10
  11   </head>
  12   <body>
  13     <div class="title">
  14  <h1>
  15      <a href="http://www.hungry.com/~pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <div class="entry">
  23       <div class="title">Fetching trusted timestamps using the rfc3161ng python module</div>
  24       <div class="date"> 8th October 2018</div>
  25       <div class="body"><p>I have  earlier covered the basics of trusted timestamping using the
  26 'openssl ts' client.  See blog post for
  27 <a href="http://www.hungry.com/~pere/blog/Public_Trusted_Timestamping_services_for_everyone.html">2014</a>,
  28 <a href="http://www.hungry.com/~pere/blog/syslog_trusted_timestamp___chain_of_trusted_timestamps_for_your_syslog.html">2016</a>
  29 and
  30 <a href="http://www.hungry.com/~pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html">2017</a>
  31 for those stories.  But some times I want to integrate the timestamping
  32 in other code, and recently I needed to integrate it into Python.
  33 After searching a bit, I found
  34 <a href="https://dev.entrouvert.org/projects/python-rfc3161">the
  35 rfc3161 library</a> which seemed like a good fit, but I soon
  36 discovered it only worked for python version 2, and I needed something
  37 that work with python version 3.  Luckily I next came across
  38 <a href="https://github.com/trbs/rfc3161ng/">the rfc3161ng library</a>,
  39 a fork of the original rfc3161 library.  Not only is it working with
  40 python 3, it have fixed a few of the bugs in the original library, and
  41 it has an active maintainer.  I decided to wrap it up and make it
  42 <a href="https://tracker.debian.org/pkg/python-rfc3161ng">available in
  43 Debian</a>, and a few days ago it entered Debian unstable and testing.</p>
  44
  45 <p>Using the library is fairly straight forward.  The only slightly
  46 problematic step is to fetch the required certificates to verify the
  47 timestamp.  For some services it is straight forward, while for others
  48 I have not yet figured out how to do it.  Here is a small standalone
  49 code example based on of the integration tests in the library code:</p>
  50
  51 <pre>
  52 #!/usr/bin/python3
  53
  54 """
  55
  56 Python 3 script demonstrating how to use the rfc3161ng module to
  57 get trusted timestamps.
  58
  59 The license of this code is the same as the license of the rfc3161ng
  60 library, ie MIT/BSD.
  61
  62 """
  63
  64 import os
  65 import pyasn1.codec.der
  66 import rfc3161ng
  67 import subprocess
  68 import tempfile
  69 import urllib.request
  70
  71 def store(f, data):
  72     f.write(data)
  73     f.flush()
  74     f.seek(0)
  75
  76 def fetch(url, f=None):
  77     response = urllib.request.urlopen(url)
  78     data = response.read()
  79     if f:
  80         store(f, data)
  81     return data
  82
  83 def main():
  84     with tempfile.NamedTemporaryFile() as cert_f,\
  85          tempfile.NamedTemporaryFile() as ca_f,\
  86          tempfile.NamedTemporaryFile() as msg_f,\
  87          tempfile.NamedTemporaryFile() as tsr_f:
  88
  89         # First fetch certificates used by service
  90         certificate_data = fetch('https://freetsa.org/files/tsa.crt', cert_f)
  91         ca_data_data = fetch('https://freetsa.org/files/cacert.pem', ca_f)
  92
  93         # Then timestamp the message
  94         timestamper = \
  95             rfc3161ng.RemoteTimestamper('http://freetsa.org/tsr',
  96                                         certificate=certificate_data)
  97         data = b"Python forever!\n"
  98         tsr = timestamper(data=data, return_tsr=True)
  99
 100         # Finally, convert message and response to something 'openssl ts' can verify
 101         store(msg_f, data)
 102         store(tsr_f, pyasn1.codec.der.encoder.encode(tsr))
 103         args = ["openssl", "ts", "-verify",
 104                 "-data", msg_f.name,
 105                 "-in", tsr_f.name,
 106                 "-CAfile", ca_f.name,
 107                 "-untrusted", cert_f.name]
 108         subprocess.check_call(args)
 109
 110 if '__main__' == __name__:
 111    main()
 112 </pre>
 113
 114 <p>The code fetches the required certificates, store them as temporary
 115 files, timestamp a simple message, store the message and timestamp to
 116 disk and ask 'openssl ts' to verify the timestamp.  A timestamp is
 117 around 1.5 kiB in size, and should be fairly easy to store for future
 118 use.</p>
 119
 120 <p>As usual, if you use Bitcoin and want to show your support of my
 121 activities, please send Bitcoin donations to my address
 122 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 123 </div>
 124
 125       <div class="tags">Tags: <a href="http://www.hungry.com/~pere/blog/tags/english">english</a>, <a href="http://www.hungry.com/~pere/blog/tags/noark5">noark5</a>, <a href="http://www.hungry.com/~pere/blog/tags/sikkerhet">sikkerhet</a>.</div>
 126
 127
 128     </div>
 129
 130
 131
 132
 133     <div id="sidebar">
 134
 135
 136
 137 <h2>Archive</h2>
 138 <ul>
 139
 140 <li>2025
 141 <ul>
 142
 143 <li><a href="http://www.hungry.com/~pere/blog/archive/2025/01/">January (4)</a></li>
 144
 145 <li><a href="http://www.hungry.com/~pere/blog/archive/2025/02/">February (3)</a></li>
 146
 147 </ul></li>
 148
 149 <li>2024
 150 <ul>
 151
 152 <li><a href="http://www.hungry.com/~pere/blog/archive/2024/01/">January (1)</a></li>
 153
 154 <li><a href="http://www.hungry.com/~pere/blog/archive/2024/02/">February (1)</a></li>
 155
 156 <li><a href="http://www.hungry.com/~pere/blog/archive/2024/03/">March (2)</a></li>
 157
 158 <li><a href="http://www.hungry.com/~pere/blog/archive/2024/04/">April (3)</a></li>
 159
 160 <li><a href="http://www.hungry.com/~pere/blog/archive/2024/05/">May (1)</a></li>
 161
 162 <li><a href="http://www.hungry.com/~pere/blog/archive/2024/06/">June (1)</a></li>
 163
 164 <li><a href="http://www.hungry.com/~pere/blog/archive/2024/07/">July (2)</a></li>
 165
 166 <li><a href="http://www.hungry.com/~pere/blog/archive/2024/12/">December (1)</a></li>
 167
 168 </ul></li>
 169
 170 <li>2023
 171 <ul>
 172
 173 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/01/">January (3)</a></li>
 174
 175 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/02/">February (1)</a></li>
 176
 177 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/04/">April (2)</a></li>
 178
 179 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/05/">May (3)</a></li>
 180
 181 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/06/">June (1)</a></li>
 182
 183 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/08/">August (1)</a></li>
 184
 185 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/09/">September (1)</a></li>
 186
 187 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/10/">October (1)</a></li>
 188
 189 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/11/">November (4)</a></li>
 190
 191 <li><a href="http://www.hungry.com/~pere/blog/archive/2023/12/">December (1)</a></li>
 192
 193 </ul></li>
 194
 195 <li>2022
 196 <ul>
 197
 198 <li><a href="http://www.hungry.com/~pere/blog/archive/2022/02/">February (1)</a></li>
 199
 200 <li><a href="http://www.hungry.com/~pere/blog/archive/2022/03/">March (3)</a></li>
 201
 202 <li><a href="http://www.hungry.com/~pere/blog/archive/2022/04/">April (2)</a></li>
 203
 204 <li><a href="http://www.hungry.com/~pere/blog/archive/2022/06/">June (2)</a></li>
 205
 206 <li><a href="http://www.hungry.com/~pere/blog/archive/2022/07/">July (1)</a></li>
 207
 208 <li><a href="http://www.hungry.com/~pere/blog/archive/2022/09/">September (1)</a></li>
 209
 210 <li><a href="http://www.hungry.com/~pere/blog/archive/2022/10/">October (1)</a></li>
 211
 212 <li><a href="http://www.hungry.com/~pere/blog/archive/2022/12/">December (1)</a></li>
 213
 214 </ul></li>
 215
 216 <li>2021
 217 <ul>
 218
 219 <li><a href="http://www.hungry.com/~pere/blog/archive/2021/01/">January (2)</a></li>
 220
 221 <li><a href="http://www.hungry.com/~pere/blog/archive/2021/02/">February (1)</a></li>
 222
 223 <li><a href="http://www.hungry.com/~pere/blog/archive/2021/05/">May (1)</a></li>
 224
 225 <li><a href="http://www.hungry.com/~pere/blog/archive/2021/06/">June (1)</a></li>
 226
 227 <li><a href="http://www.hungry.com/~pere/blog/archive/2021/07/">July (3)</a></li>
 228
 229 <li><a href="http://www.hungry.com/~pere/blog/archive/2021/08/">August (1)</a></li>
 230
 231 <li><a href="http://www.hungry.com/~pere/blog/archive/2021/09/">September (1)</a></li>
 232
 233 <li><a href="http://www.hungry.com/~pere/blog/archive/2021/10/">October (1)</a></li>
 234
 235 <li><a href="http://www.hungry.com/~pere/blog/archive/2021/12/">December (1)</a></li>
 236
 237 </ul></li>
 238
 239 <li>2020
 240 <ul>
 241
 242 <li><a href="http://www.hungry.com/~pere/blog/archive/2020/02/">February (2)</a></li>
 243
 244 <li><a href="http://www.hungry.com/~pere/blog/archive/2020/03/">March (2)</a></li>
 245
 246 <li><a href="http://www.hungry.com/~pere/blog/archive/2020/04/">April (2)</a></li>
 247
 248 <li><a href="http://www.hungry.com/~pere/blog/archive/2020/05/">May (3)</a></li>
 249
 250 <li><a href="http://www.hungry.com/~pere/blog/archive/2020/06/">June (2)</a></li>
 251
 252 <li><a href="http://www.hungry.com/~pere/blog/archive/2020/07/">July (1)</a></li>
 253
 254 <li><a href="http://www.hungry.com/~pere/blog/archive/2020/09/">September (1)</a></li>
 255
 256 <li><a href="http://www.hungry.com/~pere/blog/archive/2020/10/">October (1)</a></li>
 257
 258 <li><a href="http://www.hungry.com/~pere/blog/archive/2020/11/">November (1)</a></li>
 259
 260 </ul></li>
 261
 262 <li>2019
 263 <ul>
 264
 265 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/01/">January (4)</a></li>
 266
 267 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/02/">February (3)</a></li>
 268
 269 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/03/">March (3)</a></li>
 270
 271 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/05/">May (2)</a></li>
 272
 273 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/06/">June (5)</a></li>
 274
 275 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/07/">July (2)</a></li>
 276
 277 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/08/">August (1)</a></li>
 278
 279 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/09/">September (1)</a></li>
 280
 281 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/11/">November (1)</a></li>
 282
 283 <li><a href="http://www.hungry.com/~pere/blog/archive/2019/12/">December (4)</a></li>
 284
 285 </ul></li>
 286
 287 <li>2018
 288 <ul>
 289
 290 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/01/">January (1)</a></li>
 291
 292 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/02/">February (5)</a></li>
 293
 294 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/03/">March (5)</a></li>
 295
 296 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/04/">April (3)</a></li>
 297
 298 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/06/">June (2)</a></li>
 299
 300 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/07/">July (5)</a></li>
 301
 302 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/08/">August (3)</a></li>
 303
 304 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/09/">September (3)</a></li>
 305
 306 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/10/">October (5)</a></li>
 307
 308 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/11/">November (2)</a></li>
 309
 310 <li><a href="http://www.hungry.com/~pere/blog/archive/2018/12/">December (4)</a></li>
 311
 312 </ul></li>
 313
 314 <li>2017
 315 <ul>
 316
 317 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/01/">January (4)</a></li>
 318
 319 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/02/">February (3)</a></li>
 320
 321 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/03/">March (5)</a></li>
 322
 323 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/04/">April (2)</a></li>
 324
 325 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/06/">June (5)</a></li>
 326
 327 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/07/">July (1)</a></li>
 328
 329 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/08/">August (1)</a></li>
 330
 331 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/09/">September (3)</a></li>
 332
 333 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/10/">October (5)</a></li>
 334
 335 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/11/">November (3)</a></li>
 336
 337 <li><a href="http://www.hungry.com/~pere/blog/archive/2017/12/">December (4)</a></li>
 338
 339 </ul></li>
 340
 341 <li>2016
 342 <ul>
 343
 344 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/01/">January (3)</a></li>
 345
 346 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/02/">February (2)</a></li>
 347
 348 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/03/">March (3)</a></li>
 349
 350 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/04/">April (8)</a></li>
 351
 352 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/05/">May (8)</a></li>
 353
 354 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/06/">June (2)</a></li>
 355
 356 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/07/">July (2)</a></li>
 357
 358 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/08/">August (5)</a></li>
 359
 360 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/09/">September (2)</a></li>
 361
 362 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/10/">October (3)</a></li>
 363
 364 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/11/">November (8)</a></li>
 365
 366 <li><a href="http://www.hungry.com/~pere/blog/archive/2016/12/">December (5)</a></li>
 367
 368 </ul></li>
 369
 370 <li>2015
 371 <ul>
 372
 373 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/01/">January (7)</a></li>
 374
 375 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/02/">February (6)</a></li>
 376
 377 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/03/">March (1)</a></li>
 378
 379 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/04/">April (4)</a></li>
 380
 381 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/05/">May (3)</a></li>
 382
 383 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/06/">June (4)</a></li>
 384
 385 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/07/">July (6)</a></li>
 386
 387 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/08/">August (2)</a></li>
 388
 389 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/09/">September (2)</a></li>
 390
 391 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/10/">October (9)</a></li>
 392
 393 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/11/">November (6)</a></li>
 394
 395 <li><a href="http://www.hungry.com/~pere/blog/archive/2015/12/">December (3)</a></li>
 396
 397 </ul></li>
 398
 399 <li>2014
 400 <ul>
 401
 402 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/01/">January (2)</a></li>
 403
 404 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/02/">February (3)</a></li>
 405
 406 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/03/">March (8)</a></li>
 407
 408 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/04/">April (7)</a></li>
 409
 410 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/05/">May (1)</a></li>
 411
 412 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/06/">June (2)</a></li>
 413
 414 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/07/">July (2)</a></li>
 415
 416 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/08/">August (2)</a></li>
 417
 418 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/09/">September (5)</a></li>
 419
 420 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/10/">October (6)</a></li>
 421
 422 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/11/">November (3)</a></li>
 423
 424 <li><a href="http://www.hungry.com/~pere/blog/archive/2014/12/">December (5)</a></li>
 425
 426 </ul></li>
 427
 428 <li>2013
 429 <ul>
 430
 431 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/01/">January (11)</a></li>
 432
 433 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/02/">February (9)</a></li>
 434
 435 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/03/">March (9)</a></li>
 436
 437 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/04/">April (6)</a></li>
 438
 439 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/05/">May (9)</a></li>
 440
 441 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/06/">June (10)</a></li>
 442
 443 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/07/">July (7)</a></li>
 444
 445 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/08/">August (3)</a></li>
 446
 447 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/09/">September (5)</a></li>
 448
 449 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/10/">October (7)</a></li>
 450
 451 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/11/">November (9)</a></li>
 452
 453 <li><a href="http://www.hungry.com/~pere/blog/archive/2013/12/">December (3)</a></li>
 454
 455 </ul></li>
 456
 457 <li>2012
 458 <ul>
 459
 460 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/01/">January (7)</a></li>
 461
 462 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/02/">February (10)</a></li>
 463
 464 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/03/">March (17)</a></li>
 465
 466 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/04/">April (12)</a></li>
 467
 468 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/05/">May (12)</a></li>
 469
 470 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/06/">June (20)</a></li>
 471
 472 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/07/">July (17)</a></li>
 473
 474 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/08/">August (6)</a></li>
 475
 476 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/09/">September (9)</a></li>
 477
 478 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/10/">October (17)</a></li>
 479
 480 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/11/">November (10)</a></li>
 481
 482 <li><a href="http://www.hungry.com/~pere/blog/archive/2012/12/">December (7)</a></li>
 483
 484 </ul></li>
 485
 486 <li>2011
 487 <ul>
 488
 489 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/01/">January (16)</a></li>
 490
 491 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/02/">February (6)</a></li>
 492
 493 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/03/">March (6)</a></li>
 494
 495 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/04/">April (7)</a></li>
 496
 497 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/05/">May (3)</a></li>
 498
 499 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/06/">June (2)</a></li>
 500
 501 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/07/">July (7)</a></li>
 502
 503 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/08/">August (6)</a></li>
 504
 505 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/09/">September (4)</a></li>
 506
 507 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/10/">October (2)</a></li>
 508
 509 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/11/">November (3)</a></li>
 510
 511 <li><a href="http://www.hungry.com/~pere/blog/archive/2011/12/">December (1)</a></li>
 512
 513 </ul></li>
 514
 515 <li>2010
 516 <ul>
 517
 518 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/01/">January (2)</a></li>
 519
 520 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/02/">February (1)</a></li>
 521
 522 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/03/">March (3)</a></li>
 523
 524 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/04/">April (3)</a></li>
 525
 526 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/05/">May (9)</a></li>
 527
 528 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/06/">June (14)</a></li>
 529
 530 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/07/">July (12)</a></li>
 531
 532 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/08/">August (13)</a></li>
 533
 534 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/09/">September (7)</a></li>
 535
 536 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/10/">October (9)</a></li>
 537
 538 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/11/">November (13)</a></li>
 539
 540 <li><a href="http://www.hungry.com/~pere/blog/archive/2010/12/">December (12)</a></li>
 541
 542 </ul></li>
 543
 544 <li>2009
 545 <ul>
 546
 547 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/01/">January (8)</a></li>
 548
 549 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/02/">February (8)</a></li>
 550
 551 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/03/">March (12)</a></li>
 552
 553 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/04/">April (10)</a></li>
 554
 555 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/05/">May (9)</a></li>
 556
 557 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/06/">June (3)</a></li>
 558
 559 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/07/">July (4)</a></li>
 560
 561 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/08/">August (3)</a></li>
 562
 563 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/09/">September (1)</a></li>
 564
 565 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/10/">October (2)</a></li>
 566
 567 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/11/">November (3)</a></li>
 568
 569 <li><a href="http://www.hungry.com/~pere/blog/archive/2009/12/">December (3)</a></li>
 570
 571 </ul></li>
 572
 573 <li>2008
 574 <ul>
 575
 576 <li><a href="http://www.hungry.com/~pere/blog/archive/2008/11/">November (5)</a></li>
 577
 578 <li><a href="http://www.hungry.com/~pere/blog/archive/2008/12/">December (7)</a></li>
 579
 580 </ul></li>
 581
 582 </ul>
 583
 584
 585
 586 <h2>Tags</h2>
 587 <ul>
 588
 589  <li><a href="http://www.hungry.com/~pere/blog/tags/3d-printer">3d-printer (19)</a></li>
 590
 591  <li><a href="http://www.hungry.com/~pere/blog/tags/amiga">amiga (1)</a></li>
 592
 593  <li><a href="http://www.hungry.com/~pere/blog/tags/aros">aros (1)</a></li>
 594
 595  <li><a href="http://www.hungry.com/~pere/blog/tags/bankid">bankid (4)</a></li>
 596
 597  <li><a href="http://www.hungry.com/~pere/blog/tags/betalkontant">betalkontant (9)</a></li>
 598
 599  <li><a href="http://www.hungry.com/~pere/blog/tags/bitcoin">bitcoin (13)</a></li>
 600
 601  <li><a href="http://www.hungry.com/~pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 602
 603  <li><a href="http://www.hungry.com/~pere/blog/tags/bsa">bsa (2)</a></li>
 604
 605  <li><a href="http://www.hungry.com/~pere/blog/tags/chrpath">chrpath (3)</a></li>
 606
 607  <li><a href="http://www.hungry.com/~pere/blog/tags/debian">debian (209)</a></li>
 608
 609  <li><a href="http://www.hungry.com/~pere/blog/tags/debian edu">debian edu (159)</a></li>
 610
 611  <li><a href="http://www.hungry.com/~pere/blog/tags/debian-handbook">debian-handbook (9)</a></li>
 612
 613  <li><a href="http://www.hungry.com/~pere/blog/tags/digistan">digistan (11)</a></li>
 614
 615  <li><a href="http://www.hungry.com/~pere/blog/tags/dld">dld (18)</a></li>
 616
 617  <li><a href="http://www.hungry.com/~pere/blog/tags/docbook">docbook (33)</a></li>
 618
 619  <li><a href="http://www.hungry.com/~pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 620
 621  <li><a href="http://www.hungry.com/~pere/blog/tags/english">english (471)</a></li>
 622
 623  <li><a href="http://www.hungry.com/~pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
 624
 625  <li><a href="http://www.hungry.com/~pere/blog/tags/fildeling">fildeling (14)</a></li>
 626
 627  <li><a href="http://www.hungry.com/~pere/blog/tags/freeculture">freeculture (34)</a></li>
 628
 629  <li><a href="http://www.hungry.com/~pere/blog/tags/freedombox">freedombox (9)</a></li>
 630
 631  <li><a href="http://www.hungry.com/~pere/blog/tags/frikanalen">frikanalen (20)</a></li>
 632
 633  <li><a href="http://www.hungry.com/~pere/blog/tags/h264">h264 (20)</a></li>
 634
 635  <li><a href="http://www.hungry.com/~pere/blog/tags/intervju">intervju (43)</a></li>
 636
 637  <li><a href="http://www.hungry.com/~pere/blog/tags/isenkram">isenkram (21)</a></li>
 638
 639  <li><a href="http://www.hungry.com/~pere/blog/tags/kart">kart (23)</a></li>
 640
 641  <li><a href="http://www.hungry.com/~pere/blog/tags/kodi">kodi (6)</a></li>
 642
 643  <li><a href="http://www.hungry.com/~pere/blog/tags/ldap">ldap (9)</a></li>
 644
 645  <li><a href="http://www.hungry.com/~pere/blog/tags/lego">lego (5)</a></li>
 646
 647  <li><a href="http://www.hungry.com/~pere/blog/tags/lenker">lenker (8)</a></li>
 648
 649  <li><a href="http://www.hungry.com/~pere/blog/tags/linuxcnc">linuxcnc (8)</a></li>
 650
 651  <li><a href="http://www.hungry.com/~pere/blog/tags/lsdvd">lsdvd (3)</a></li>
 652
 653  <li><a href="http://www.hungry.com/~pere/blog/tags/ltsp">ltsp (1)</a></li>
 654
 655  <li><a href="http://www.hungry.com/~pere/blog/tags/madewithcc">madewithcc (3)</a></li>
 656
 657  <li><a href="http://www.hungry.com/~pere/blog/tags/mesh network">mesh network (8)</a></li>
 658
 659  <li><a href="http://www.hungry.com/~pere/blog/tags/multimedia">multimedia (48)</a></li>
 660
 661  <li><a href="http://www.hungry.com/~pere/blog/tags/nice free software">nice free software (15)</a></li>
 662
 663  <li><a href="http://www.hungry.com/~pere/blog/tags/noark5">noark5 (27)</a></li>
 664
 665  <li><a href="http://www.hungry.com/~pere/blog/tags/norsk">norsk (326)</a></li>
 666
 667  <li><a href="http://www.hungry.com/~pere/blog/tags/nuug">nuug (200)</a></li>
 668
 669  <li><a href="http://www.hungry.com/~pere/blog/tags/offentlig innsyn">offentlig innsyn (42)</a></li>
 670
 671  <li><a href="http://www.hungry.com/~pere/blog/tags/open311">open311 (2)</a></li>
 672
 673  <li><a href="http://www.hungry.com/~pere/blog/tags/opensnitch">opensnitch (4)</a></li>
 674
 675  <li><a href="http://www.hungry.com/~pere/blog/tags/opphavsrett">opphavsrett (76)</a></li>
 676
 677  <li><a href="http://www.hungry.com/~pere/blog/tags/personvern">personvern (114)</a></li>
 678
 679  <li><a href="http://www.hungry.com/~pere/blog/tags/raid">raid (4)</a></li>
 680
 681  <li><a href="http://www.hungry.com/~pere/blog/tags/reactos">reactos (1)</a></li>
 682
 683  <li><a href="http://www.hungry.com/~pere/blog/tags/reprap">reprap (11)</a></li>
 684
 685  <li><a href="http://www.hungry.com/~pere/blog/tags/rfid">rfid (3)</a></li>
 686
 687  <li><a href="http://www.hungry.com/~pere/blog/tags/robot">robot (17)</a></li>
 688
 689  <li><a href="http://www.hungry.com/~pere/blog/tags/rss">rss (1)</a></li>
 690
 691  <li><a href="http://www.hungry.com/~pere/blog/tags/ruter">ruter (7)</a></li>
 692
 693  <li><a href="http://www.hungry.com/~pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 694
 695  <li><a href="http://www.hungry.com/~pere/blog/tags/sikkerhet">sikkerhet (60)</a></li>
 696
 697  <li><a href="http://www.hungry.com/~pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 698
 699  <li><a href="http://www.hungry.com/~pere/blog/tags/skepsis">skepsis (5)</a></li>
 700
 701  <li><a href="http://www.hungry.com/~pere/blog/tags/standard">standard (80)</a></li>
 702
 703  <li><a href="http://www.hungry.com/~pere/blog/tags/stavekontroll">stavekontroll (7)</a></li>
 704
 705  <li><a href="http://www.hungry.com/~pere/blog/tags/stortinget">stortinget (14)</a></li>
 706
 707  <li><a href="http://www.hungry.com/~pere/blog/tags/surveillance">surveillance (65)</a></li>
 708
 709  <li><a href="http://www.hungry.com/~pere/blog/tags/sysadmin">sysadmin (6)</a></li>
 710
 711  <li><a href="http://www.hungry.com/~pere/blog/tags/usenix">usenix (2)</a></li>
 712
 713  <li><a href="http://www.hungry.com/~pere/blog/tags/valg">valg (9)</a></li>
 714
 715  <li><a href="http://www.hungry.com/~pere/blog/tags/verkidetfri">verkidetfri (23)</a></li>
 716
 717  <li><a href="http://www.hungry.com/~pere/blog/tags/video">video (82)</a></li>
 718
 719  <li><a href="http://www.hungry.com/~pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 720
 721  <li><a href="http://www.hungry.com/~pere/blog/tags/web">web (42)</a></li>
 722
 723 </ul>
 724
 725
 726     </div>
 727     <p style="text-align: right">
 728  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 729 </p>
 730
 731   </body>
 732 </html>