HITAG Authentication Mode

[DenisP]

Dear community support

How to implement the challenge procedure for HITAG 2 and HITAG S?

Thank you

[DenisP]

Thank you Kelly

From HITAG2 manual: With the transponder password in the configuration page the mutual authentication takes
place. Transmission of the password and the following communication takes place encrypted.

How to implement the authentication and encrypted communication after it? 

[KaiLi]

Hello @DenisP 

You can download the package Control library HTRC110 from the below link:

https://www.nxp.com/products/rfid-nfc/hitag-lf/hitag-reader-solution:HTRC11001T

There is an example for how to operate and access HITAG_X, it could help you.

Have a nice day.

Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.

Best regards,
Kelly
Technical Support
NXP Semiconductor

[KaiLi]

Hello @DenisP 

Take the NTAG21X series as an example, authentication steps as the following:
1. Activated NTAG and made it in activation status. 
2. Set a password, password is 32bit or 4bytes.
3. Execute PWD_AUTH command.

There are two tools can help you which are TagWriter and RFID Discover.

 TagWriter is the app that runs on the phone and RFID Discover works on Windows, but it requires a reader to with it.

Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.

Best regards,
Kelly
Technical Support
NXP Semiconductor