A NFC device and method for selectively securing records in a near field communication data exchange format message

摘要

Methods for selectively securing records in a Near Field Communication Data Exchange Format (NDEF) message are provided. One of the methods includes placing a place marker signature record in the NDEF message. The place marker signature record is a modified signature Record Type Definition (RTD). A first set of records preceding the place marker signature record in the NDEF message are unsecured. The method also includes securing the second set of records following the place marker signature record. Another method includes placing a secured bytes field in the signature Record Type Definition (RTD). The secured byte filed indicates number of bytes of data to be secured preceding this field of the signature RTD. The method also includes securing data in records preceding this field in the signature RTD, based on the value of the secured bytes filed.