topic Re: NTAG5 version with SUN / CMAC signature mapping? in Secure Authentication

NTAG5 version with SUN / CMAC signature mapping?

amal — Wed, 13 Dec 2023 07:19:06 GMT

Does anyone know if any of the NTAG5 chip types support the SUN type counter based CMAC memory mapped signatures on NFC read similar to the NTAG424? We are looking for an NTAG5 Link type chip that support I2C bus comms protected by mutual authentication but also allows a simple cmac signed NFC read we can auth with just a browser no special app.

Re: NTAG5 version with SUN / CMAC signature mapping?

KaiLi — Thu, 14 Dec 2023 05:31:08 GMT

Hello @amal

NTAG 5 Link does not have such a feature, you only select NTAG 424 DNA, but which is not I2C interface. Based on your needs, there is currently no better recommendation. Sorry, please understand.

kelly

Re: NTAG5 version with SUN / CMAC signature mapping?

amal — Thu, 14 Dec 2023 22:22:24 GMT

Ok thank you. Does NTAG Link or Boost support any mapping features at all like UID and / or COUNTER into the user memory on NFC read?

Re: NTAG5 version with SUN / CMAC signature mapping?

KaiLi — Tue, 19 Dec 2023 05:46:41 GMT

Hello @amal

Maybe pass-through mode is the feature that you want to know about, see the datasheet for details:

NTAG 5 link - NFC Forum-compliant I2C bridge (nxp.com.cn)

Best Regards,

kelly