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Change ATR value

JavaCard Applet Development Related Questions and Answers.
Anenl
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Change ATR value

Postby Anenl » Wed Oct 18, 2017 10:25 pm

I am trying to change my card ATR value to 3B 6D 00 00 00 73 C8 00 13 64 54 34 42 33 00 90 00
I have got the script already. But before doing that I would like to know how you know which part is ATR value and which part is historical bytes?

javacardx
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Re: Change ATR value

Postby javacardx » Thu Oct 19, 2017 5:37 am

There is a simple way without reading any SPEC :mrgreen:
https://www.javacardos.com/tools/atr.html

Thelogan
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Re: Change ATR value

Postby Thelogan » Thu Oct 19, 2017 6:12 am

Hi there, it's easy to use ATR parse tool to know the ATR and historical bytes.

Anenl
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Re: Change ATR value

Postby Anenl » Thu Oct 19, 2017 10:21 pm

Thank you for all the help. It's indeed a useful online tool for me.

https://javacardos.com/tools/atr.html

Ponele
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Re: Change ATR value

Postby Ponele » Fri Oct 20, 2017 3:22 am

Read more about ATR in Chapter 10 of 7816-3


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