KDE PIM/KItinerary/Thalys Barcode

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Revision as of 11:50, 8 February 2020 by Vkrause (talk | contribs)

General Observations

  • always exactly 114 byte
  • all binary, there are no recognizable ASCII strings in this
  • there's ~40 bytes towards the end with very high entropy, possibly some kind of signature
  • based on currently only 4 samples, so there's limited confidence in this
  • 0:4 - 2:1 (14 bit) is "3018", which is the UIC operator code of Thalys. This matches Appendix C of ANNEX B.6 of TAP TSI, but unfortunately only for the first 18 bit it seems. Might still mean a similar encoding is used, but in a different layout.

Bit Layout

Byte[:Bit] (MSB) Content Meaning Notes
0:0 - 4:7 0x32 F2 84 20 40 fixed in all samples
5:0 - 5:7 0x01 or 0x02 class
6:0 - 8:7 null
9:0 - 35:7 TODO
36:0 - 42:7 null
43:0 - 49:7 0x9a 0c 28 82 c8 22 b2 fixed in all samples
50:0 - 54:7 TODO
55:0 - 58:7 0xc0 0a 80 30 fixed in all samples
59:0 - 105:7 TODO
106:0 - 113:7 null