Nokia NFC SDK

Nokia rolled out their 6131 NFC model around January 2007, aimed mainly at developers. To upload your own MIDlets to the phone you have to ask your dealer to factory unlock the phone, or do it yourself via an Unlock MIDlet (Nokia wiki listed below has a link) which will prevent it from working with trusted MIDlets and applets afterwards. Nokia makes up for this royal pain by offering a decent NFC and MIDlet SDK, and the developer community for their products is quite big and provides good support.

Good places to start reading:

• Official Nokia NFC SDK page
  
• Forum Nokia Documentation and Tools pages
• Forum Nokia wiki FAQ for 6131 NFC
  
• Nokia Secure Chip FAQ
• Nokia MIDlet development tutorial

At the time of this posting the PDF for the Nokia 6131 NFC SDK Programmer's Guide was not available via the official Nokia site, so instead I got it from the Uni. Lüneburg FTP along with the Nokia SDK and other docs. (All the guide PDFs and supporting documentation are included in the SDK.)

Note: Unlocked Nokia 6131 NFC phones all use the same key-set, namely

42/1/DES-ECB/404142434445464748494a4b4c4d4e4f
42/2/DES-ECB/404142434445464748494a4b4c4d4e4f
42/3/DES-ECB/404142434445464748494a4b4c4d4e4f

and security protocol is the GP default: SCP02 option 15 (CMAC+ENC, refer to Nokia 6131 NFC Technical Product Description v1.0 section 7.2, p 26). For JCOP Tools this translates to using ext-auth enc, while in GPShell you would use mode_211 and open_sc -security 3 [...] A detailed discussion with examples can be found on the Nokia Forum. For detailed definitions of SCP02 and its options, refer to Global Platform Card Specification 2.1.1 Appendix E.1.1, p213.