S32KのトピックRe: Implementing Hitag2 encryption on PKE base station.

Implementing Hitag2 encryption on PKE base station.

vivek_sri — Sun, 20 Jun 2021 06:35:02 GMT

Hi,

I'm working on PKE project with S32K144 as base station and Token+ tag.

I'm looking for any reference manual or sample code to implement the Hitag2 encryption and transmit the following data and verify the response.

Wake Up ID IDE (4 bytes) Data Command: 0x00 (1 byte) + Random No (4 byte) + Signature (2 byte) + CRC (1 byte)

Thanks & regards,

Vivek Srivastava

Re: Implementing Hitag2 encryption on PKE base station.

Kan_Li — Tue, 22 Jun 2021 03:27:28 GMT

Hi @vivek_sri ,

What do you mean with the Hitag2 encryption? Is it some kind of encryption performed on the data to be stored in Hitag2? I think you may use the module of Cryptographic Services Engine (CSEc) to implement such as AES128 encryption.

Have a great day,
Kan

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Re: Implementing Hitag2 encryption on PKE base station.

vivek_sri — Tue, 22 Jun 2021 03:54:24 GMT

Hi @Kan_Li

Actually I'm using NXP evaluation board to implement PKE system which comes with S32K board as base station and NCF29A1 Token+ module as Keyfob.

The keyfob is pre flashed with a demo code which supports Hitag 2 encryption method (like Hitag 3 and AES).

The authentication process is as follows:

PKE authentication: Challenge + signature are received via LF interface, processed by the HITAG-2 algorithm, verified for correctness and response is transmitted via RF interface.

Command (LF):

Wake Up ID IDE (4 bytes) Data Command: 0x00 (1 byte) + Random No (4 byte) + Signature (2 byte) + CRC (1 byte)
Response (RF): Data Response (6 byte) + CRC (1 byte)

I want to implement the Hitag 2 algorithm in my base station to verify the response.

Best Regards,

Vivek Srivastava

Re: Implementing Hitag2 encryption on PKE base station.

Kan_Li — Thu, 24 Jun 2021 09:27:05 GMT

Hi @vivek_sri ,

Which NXP evaluation board are you using to implement PKE system? Is it OM6716 (https://www.nxp.com/products/security-and-authentication/secure-car-access/transponder-evaluation-and-development-kit-2-rke-pke-with-rf-board:OM6716 )?

Have a great day,
Kan