ntag424 v0.2.6

node-ntag424

Requirements

You probably also need

• @pokusew/pcsclite for actually communicating with the tag (see examples).
  • On Linux, you may also need:
    • apt install libpcsclite-dev pcsc-tools
    • In case you have a ThinkPad with a built-in reader, it might conflict with libpcsclite. This may help: https://stackoverflow.com/a/66558992
    • This library was tested with the reader Alcor Micro AU9540
• You can use crypto.hkdf (builtin) or nistkdf-800-108 for key diversification/derivation.
• ndef to parse and create NDEF messages

Usage

See example directory.

npm install ntag424
# keep in mind this project is AGPL licensed

Development

npm ci
npm run compile
npm test # compile + tests

Resources Used

Data Sheets

• https://www.nxp.com/docs/en/data-sheet/NT4H2421Gx.pdf
• https://www.nxp.com/docs/en/application-note/AN12196.pdf

Blog Posts

• https://medium.com/@androidcrypto/demystify-the-secure-dynamic-message-with-ntag-424-dna-nfc-tags-android-java-part-1-b947c482913c
• https://medium.com/@androidcrypto/demystify-the-secure-dynamic-message-with-ntag-424-dna-nfc-tags-android-java-part-2-1f8878faa928

Other Implementations

• https://github.com/AndroidCrypto/Ntag424SdmFeature
• https://github.com/johnnyb/ntag424-java
• https://gitlab.com/bettse/accessgranted
• https://gitlab.com/bettse/ntag424_personalization
• https://github.com/MxAshUp/ntag424-js

Big thanks to all of you!

License

See LICENSE. To contribute, you have to sign the CLA in your first PR.