https://community.nxp.com/t5/Secure-Authentication/ntag424%E7%9A%84Originality-Signature/m-p/2400593#M2120 <P>Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/265153">@qinzhi</a></P> <P>Hope you are doing well.</P> <P>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.</P> <P>Available procedure for asymmetric signature verification is described in <A href="https://www.nxp.com/docs/en/application-note/AN12196.pdf" target="_blank">NTAG 424 DNA and NTAG 424 DNA TagTamper features and hints</A>, Section 7.2. However, there is no information specific to ECDSA verification as this procedure is done outside the card.</P> <P>I apologize again for the inconvenience.</P> <P>Regards,<BR />Eduardo.</P> Thu, 30 Jul 2026 17:24:59 GMT EduardoZamora 2026-07-30T17:24:59Z https://community.nxp.com/t5/Secure-Authentication/ntag424%E7%9A%84Originality-Signature/m-p/2400290#M2119 <P>你好：</P><P>我司已经签署保密协议，但是不知道如何使用natg424 uid与公钥，Read_Sig获取的56字节签名在嵌入式硬件平台实现ECDSA验证。文档上an11350没有详细步骤实现ECDSA verification(secp224r1),能否告诉我申请哪些资料来实现，谢谢。</P> Thu, 30 Jul 2026 02:05:19 GMT https://community.nxp.com/t5/Secure-Authentication/ntag424%E7%9A%84Originality-Signature/m-p/2400290#M2119 qinzhi 2026-07-30T02:05:19Z https://community.nxp.com/t5/Secure-Authentication/ntag424%E7%9A%84Originality-Signature/m-p/2400593#M2120 <P>Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/265153">@qinzhi</a></P> <P>Hope you are doing well.</P> <P>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.</P> <P>Available procedure for asymmetric signature verification is described in <A href="https://www.nxp.com/docs/en/application-note/AN12196.pdf" target="_blank">NTAG 424 DNA and NTAG 424 DNA TagTamper features and hints</A>, Section 7.2. However, there is no information specific to ECDSA verification as this procedure is done outside the card.</P> <P>I apologize again for the inconvenience.</P> <P>Regards,<BR />Eduardo.</P> Thu, 30 Jul 2026 17:24:59 GMT https://community.nxp.com/t5/Secure-Authentication/ntag424%E7%9A%84Originality-Signature/m-p/2400593#M2120 EduardoZamora 2026-07-30T17:24:59Z