Revision as of 19:54, 17 June 2022

Domestic Ticket

Aztec barcode, in PDF or image
Variable length
For domestic tickets only, international ones use RCT2 in UIC 918.3 container
zlib compressed textual payload starting at offset 3.
zlib decompressed content is plain text and hardly larger than the full compressed data, which suggests the compressed data doesn't span the full length of the barcode (signature?).

Offset	Format	Meaning	Notes
0	0x04	?	fixed value
1-2	16 bit BE	?	varies with length?
3-4	0x78 0x9C	zlib marker
5+	zlib	see below
?	?	?	high entropy data, signature?
-16	0x00	?	last 16 bytes are always 0x00

34 lines, delimited by 0x0A
UTF-8 encoded
date/time format: 8 digits, the first 4 digits are the days since 2009-01-01, the last four are the time in "hhmm" format. Local time/no timezone.

Index	Format	Meaning	Notes
0	"P"		fixed value
1	16 digit number	ticket number
2	6-8 digit number	?
3	N.NN	ticket price	in EUR
4	N.NN	price?	0.00 in all samples
5	N.NN	price?	0.00 in all samples
6	string	departure station name
7	string	arrival station name
8	<number>[<digit>.tr.]	train number and class	("trieda" is class)
9	date/time	departure time
10	date/time	end of validity?	this is encoded with one day more than printed in the PDF?
11	string	passenger name
12	?	?	0 in all samples
13	?	?	empty in all samples
14	?	?	empty in all samples
15	?	?	empty in all samples
16	?	?	empty in all samples
17	1-3 digit number	?
18	?	?	0 in all samples
19	date/time	?	?
20	7 digit number	discount program membership number
21	7 digit number	?	can be empty, possibly related to the discount program?
22	"N"		fixed value
23	"text"		fixed value
24	string	ticket name/title	e.g. "CESTOVNÝ LÍSTOK"
25	<string>": "<digit>	tariff name?	e.g. "OBYČAJNÝ" (ordinary) or "KLASIK RP" (discount program), digit is 1 in all samples
26	string	ticket type?	e.g. "JEDNOSMERNÁ CESTA" (one way)
27	?	?	empty in all samples
28	"Z: "<string>	departure station name
29	"Do: "<string>	arrival station name
30	"Km: "<number>" NO-"<string>"-"<digit>".tr."	distance?/train type/class	train type is e.g. "R" or "REX"
31	"Vlak: "<number>	train number
32	?	?	empty in all samples
33	?	?	empty in all samples

@@ Line 8: / Line 8: @@
 * zlib compressed textual payload starting at offset 3.
 * zlib decompressed content is plain text and hardly larger than the full compressed data, which suggests the compressed data doesn't span the full length of the barcode (signature?).
+== Binary Structure ==
+{| class="wikitable"
+! Offset !! Format !! Meaning !! Notes
+|-
+| 0 || 0x04 || ? || fixed value
+|-
+| 1-2 || 16 bit BE || ? || varies with length?
+|-
+| 3-4 || 0x78 0x9C || zlib marker ||
+|-
+| 5+ || zlib || see below ||
+|-
+| ? || ? || ? || high entropy data, signature?
+|-
+| -16 || 0x00 || ? || last 16 bytes are always 0x00
+|}
 == Textual Payload Structure ==