Coding of the new 512 bit German phone card
by
Luis Padilla Visdómine
Byte (bits) Hex
+----+
1 (1...8) | D8 |
+----+
2 (9...16) | 2F | --> Germany
+----+
3 (17...24) | FC |
+----+
4 (25...32) | CA | --> Gemplus
+----+
5 (33...40) | AX | --> 12 DM
| EX | --> 50 DM
+----+
6 (41...48) | XX |
7 (49...56) | XX | --> Serial number*
8 (57...64) | XX |
+----+
9 (65...72) | | --> #1s x 4096 + )
10 (73...80) | | --> #1s x 512 + )
11 (81...88) | | --> #1s x 64 + ) 5 stage octal counter*
12 (89...96) | | --> #1s x 8 + )
13 (97...104) | | --> #1s x 1 = 100 * DM )
+----+
14 (105...112) | FF |
+----+
15 (113...120) | FF | --> Erasable
+----+
16 (121...128) | FF | --> Erasable
+----+
17 (129...136) | FF |
.. ... | .. | --> Area of bits set to 1
40 (313...320) | FF |
+----+
41 (321...328) | 00 |
.. ... | .. | --> Area of bits set to 0
44 (345...352) | 00 |
+----+
45 (353...360) | 08 | --> Erasable
+----+
46 (361...368) | 8E | --> Erasable
+----+
47 (369...376) | 8F | --> Erasable
+----+
48 (377...384) | FF | --> Erasable
+----+
49 (385...392) | FF |
.. ... | .. | --> Area of bits set to 1
64 (505...512) | FF |
+----+
* For an explanation see Stephane Bausson's
"What you need to know about electronics telecards".
padilla@gae.ucm.es
(1-Mar-2000) My PGP public key.
This link: http://www.gae.ucm.es/~padilla/extrawork/coding.html

Go to the parent page: PC-smart card interface.