cyberneticlibrary

Plan NFC tag authentication implementation

ntag424-plancommandsetup L2★1

werkstattwaedi/machine-auth ↗

What it does

Plan NTAG 424 DNA security architecture, SUN/SDM flow, and personalization sequence

Best for

Scoping and designing NFC tag security before implementation (authentication, access control, loyalty)

Inputs

· use case description
· ntag424-expert.md reference
· datasheet + AN12196 docs
· security requirements

Outputs

· security model (key allocation)
· file configuration table
· SUN/SDM design (if backend verify)
· APDU sequences
· key management strategy

Preconditions

· .claude/agents/ntag424-expert/ knowledge base exists
· requirements clarified

Failure modes

· requirements ambiguous
· key diversification strategy unclear
· SUN/SDM backend verification design incomplete

Trust signals

· reads datasheet and application notes
· cites page numbers
· generates APDU sequences
· threat model explicit
· testing strategy included