NT4H2421Gx NTAG 424 DNA – Secure NFC T4T compliant IC
●NTAG 424 DNA (NT4H2421Gx) sets a new standard in secure NFC and IoT applications, introducing a new NTAG DNA chip generation with state-of-the-art features for security and privacy protection. It comes with AES-128 cryptographic operation and a new Secure Unique NFC (SUN) Message feature to generate tap-unique data authentication upon each read-out by an NFC enabled mobile device. This enables most advanced product and content protection, plus secured exclusive user experiences served in real time.
●NTAG 424 DNA is fully compliant with the NFC Forum Type 4 Tag IC specification (Certification ID: 58562), with the contactless proximity protocol according to ISO/IEC14443-4 and the ISO/IEC 7816-4 based file system and command frames, to ensure maximum interoperability within the NFC infrastructure. Its NFC performance supports superior user interaction and reading distances of up to 10 cm.
●Using AES-128 cryptography, the tag generates a Secure Unique NFC (SUN) message for the authentication each time it is being tapped. An NFC mobile device reads this tap-unique URL with the SUN authentication message, sends it to the host where tag and message authentication take place, and returns the verification result. The SUN authentication mechanism is guaranteed to work on Android (without a dedicated app) and iOS11 (with an app). This way, NTAG 424 DNA offers tag authentication, as well as data assurances on authenticity, integrity and even confidentiality, while also securing physical tag presence, see also Section 9.3.
●The chip has a file-based memory structure of totally 416 bytes (compliant to NFC Forum Type 4 Tag and ISO/IEC 7816-4) with a Capability Container (CC) file to specify the NFC Forum tag operation, an NDEF file as well as an extra data file to protect sensitive content. Configurable access rights per file support different use cases of brand product manufacturers and service providers to meet specific security and operational requirements. With 5 customer defined AES keys, NTAG 424 DNA enables advanced cryptographic functionalities – for the CMAC, optionally combined with encrypted data, for SUN, mutual authentication (secure host or reader authentication) and for secure access to the NDEF file and the extra data file.
●NTAG 424 DNA contains configurable features like optionally encrypting part of the NDEF file, and the fully encrypted communication mode to address privacy sensitive applications. The optional Random ID together with the encrypted chip UID/data that can be mirrored in the NDEF file, enables compliance with latest user data protection regulations.
●Besides the standard AES-128 implementation, NTAG 424 DNA can also offer an alternative AES-based protocol for authentication and secure messaging using a Leakage Resilient Primitive, or LRP – a wrapper around the AES cryptography to enhance side-channel attack resistance.
●Thanks to its high input capacitance of 50 pF, NTAG 424 DNA tag IC is well suited for smart product applications requiring smaller footprint antennas, without compromise on performance. Smaller NFC tags can more easily be embedded in product labels, modules, caps and closures, and other packaging formats.
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NTAG 424 DNA 、 NT4H2421Gx 、 NT4H2421G0DUD/02 、 NT4H2421G0DUF/02 、 NT4H2421G0DA8/02 、 NT4H2421GSDUD/02 、 NT4H2421GSDUF/02 、 NT4H2421GSDA8/02 、 NT4H2421GCDUD/02 、 NT4H2421GCDUF/02 、 NT4H2421GCDA8/02 |
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Datasheet |
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Please see the document for details |
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FFC;MOA8 |
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English Chinese Chinese and English Japanese |
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31 January 2019 |
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Rev. 3.0 |
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465430 |
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940 KB |
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