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#1 2016-04-30 15:10:10

ntk
Contributor
Registered: 2015-05-24
Posts: 701

[abandoned] Question on Tecom 27bit and indala 26bit

Firstly do you know it is still in use? In which region? which area?

From http://www.proxmark.org/forum/viewtopic.php?id=1767
I understand it has 16 bits CN, 8 bits FC (from another thread internet austech.com ), parity at 1 and 27, one bit is unknown could be checksum or another parity. 

It is indala so it follows format and data mapping rule from indala26 bit too?

Indala 26bit
SC    2, 3, 4, 5, 6, 7, 8, 9, 10,11,12,13
CN    14,15,16,17,18,19,20,21,22,23,24,25
E  1  2, 3, 4, 5, 6, 7, 8, 9, 10,11,12,13
O  26 14,15,16,17,18,19,20,21,22,23,24,25

can you tell me something about that last one unknown bit, and

Hang on what is about indala data mapping rule? I am confused with a discussion about indala in Nov 2015 http://www.proxmark.org/forum/viewtopic.php?id=624&p=2 It seems that calculation not very sure, but I see indala clone in PM3? One said checksum parity not match but on door clone still work; one other said as soon any parity not match reader stops transmitting!! Who right

i confused that discussion seems to have not an end yet

Last edited by ntk (2016-05-08 12:41:26)

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#2 2016-04-30 22:53:27

ntk
Contributor
Registered: 2015-05-24
Posts: 701

Re: [abandoned] Question on Tecom 27bit and indala 26bit

Can not read at all from the picture "Indala 26-bit w format" in http://www.proxmark.org/forum/viewtopic.php?id=1767.

Could someone help me with what stand at the bit 63 to 96, in the line "Bit definitions", magnifier to 400% but still could not read that line

Also could you pls pls explain in checksum calc Y2,Y4,...,Y14,Y16 what does it mean? Y is 65535 so does Y2 mean 65535^2 or Y16 equal that number ^16... or what is it for electro-technique engineers?

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