KDE PIM/KItinerary/Koleje Mazowiekie: Difference between revisions

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(Created page with "== General Observation == * PDF contains a Code 128 1D code and a QR code * The 1D code contains the ticket number (CP \d+), which is also printed under the QR code * Both codes in the PDF are implemented as ungrouped individual rectangle paths, which currently failed to be recognized. * The QR code contains a base64 encoded payload * Content varies in size (87-89 after base64 decoding in the known samples) * Content seems byte-aligned * The content seems backwards!? =...")
 
Line 32: Line 32:
| 14 || 1 || ||  || 0x00
| 14 || 1 || ||  || 0x00
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|-
| 15 || 16 || || || varies between samples, presumably time and stations?
| 15 || 12 || || ||  
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| 27 || 2 || uint16 LE || departure station code
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| 29 || 2 || uint16 LE || arrival station code
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|-
| 31 || 10 || string || passenger name || given/family name separated by '.', given name truncated to fit, string in reverse order!?
| 31 || 10 || string || passenger name || given/family name separated by '.', given name truncated to fit, string in reverse order!?

Revision as of 14:41, 9 July 2023

General Observation

  • PDF contains a Code 128 1D code and a QR code
  • The 1D code contains the ticket number (CP \d+), which is also printed under the QR code
  • Both codes in the PDF are implemented as ungrouped individual rectangle paths, which currently failed to be recognized.
  • The QR code contains a base64 encoded payload
  • Content varies in size (87-89 after base64 decoding in the known samples)
  • Content seems byte-aligned
  • The content seems backwards!?

Payload structure

Offset Size Data Type Meaning Notes
0 3 0x03 0x01 0x20
3 2 "PC" (CP backwards, the prefix found in front of the ticket number)
5 4 uint32 LE ticket number
9 2
10 1 0x00
11 1 uint8 the number printed after "OF:" in the upper right
12 1 0x00
13 1 uint8 number of passengers? the number printed after "N:" in the upper right
14 1 0x00
15 12
27 2 uint16 LE departure station code
29 2 uint16 LE arrival station code
31 10 string passenger name given/family name separated by '.', given name truncated to fit, string in reverse order!?
41 varying ASN.1 signature