2400290_en-US

Originality Signature by ntag424

Hello:

Our company has signed a confidentiality agreement, but we are unsure how to implement ECDSA verification on an embedded hardware platform using the natg424 uid, public key, and the 56-byte signature obtained from Read_Sig. The documentation for AN11350 does not provide detailed steps for implementing ECDSA verification (secp224r1). Could you please tell me what resources I need to apply for to achieve this? Thank you.

Re: ntag424的Originality Signature

Hello @qinzhi

Hope you are doing well.

My apologies, the Application Note that is used as reference for NTAG Signature Validation (AN11350) is intended for other NTAG products holding 32-byte signature and different curves.

Available procedure for asymmetric signature verification is described in NTAG 424 DNA and NTAG 424 DNA TagTamper features and hints, Section 7.2. However, there is no information specific to ECDSA verification as this procedure is done outside the card.

I apologize again for the inconvenience.

Regards,
Eduardo.