SECURE NEAR FIELD COMMUNICATION SOLUTIONS AND CIRCUITS

摘要

A device includes a near field communication (NFC) circuit (114) that is configured and arranged to communicate data with external devices (102). An internal communication circuit (112) communicates data over a microprocessor bus (110). A secure memory circuit (118) stores an identifier that is unalterable in the secure memory circuit.;Logic circuitry (116) performs a secure transaction protocol. The transaction protocol includes determining whether a communication, received by the NFC circuit, is addressed to the secure memory circuit; sending, in response to determining that the communication is addressed to the secure memory circuit, the communication to the memory circuit; sending, in response to determining that the communication is not addressed to the secure memory circuit, the communication to the microprocessor bus; and transmitting data, received from both the NFC circuit and the secure memory circuit, to the NFC circuit, the transmitted data including the identifier value and configured for communication with external devices using NFC.

主权项

1. A device comprising:
a near field communication (NFC) circuit (114) configured and arranged to communicate data with external devices (102) using NFC, and an internal communication circuit (112) configured and arranged to communicate data over a microprocessor bus (110); a secure memory circuit (118) that stores an identifier that is unalterable in the secure memory circuit; and logic circuitry (116) configured and arranged to perform a secure transaction protocol that includes
determining whether a communication that is received by the NFC circuit is addressed to the secure memory circuit,sending, in response to determining that the communication is addressed to the secure memory circuit, the communication to the memory circuit,sending, in response to determining that the communication is not addressed to the secure memory circuit, the communication to the microprocessor bus, andtransmitting data, received from both the NFC circuit and the secure memory circuit, to the NFC circuit, the transmitted data including the identifier value and configured for communication with external devices using NFC.