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#1 2013-05-23 15:36:40

C0Y0-Ck3r
Contributor
Registered: 2012-11-08
Posts: 87

question about data bitstream

Hey,

When doing a data samples, and executing after the data bitstream, to what does that refer ? When getting all the bits of the bitstream, and converting it to hex, does that refer to the first authentication in case of a mifare card ?

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#2 2014-06-11 09:22:34

eskizle
Contributor
Registered: 2011-07-18
Posts: 26

Re: question about data bitstream

Any update?

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#3 2014-06-11 09:30:45

holiman
Contributor
Registered: 2013-05-03
Posts: 566

Re: question about data bitstream

Could you elaborate a bit, I don't understand the question

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#4 2014-06-11 13:32:27

eskizle
Contributor
Registered: 2011-07-18
Posts: 26

Re: question about data bitstream

holiman wrote:

Could you elaborate a bit, I don't understand the question

As i'm concerned i'm wondering if the use of data bitstream or data samples directly after lf read or hf read permits to obtain the raw data transmited ?

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#5 2014-06-11 14:46:40

Enio
Contributor
Registered: 2013-09-24
Posts: 175

Re: question about data bitstream

In case of lf read you get the raw data of the tag answer to the field. That is, the samples values of the received wave from tag (peak detected).

On hf this is different as alot of interpretation is already done in fpga, however it is possible to 'snoop' raw samples there too, but still experimental.

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