Method for secure communications using NFC cryptographic security module

A cryptographic security token having a secure microprocessor, a secure bus connected to said secure microprocessor, a bus isolation microcontroller connected to said secure bus wherein said bus isolation microcontroller comprises firmware for controlling communications through said secure bus to sa...

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Bibliographische Detailangaben
Hauptverfasser:	Krawczewicz, Mark Stanley, Schaeffer, Jr., Richard C, Krawczewicz, Thomas J, Rose, Kenneth Hugh
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	A cryptographic security token having a secure microprocessor, a secure bus connected to said secure microprocessor, a bus isolation microcontroller connected to said secure bus wherein said bus isolation microcontroller comprises firmware for controlling communications through said secure bus to said secure microprocessor, a first NFC antenna connected to said bus isolation microcontroller, and a second NFC antenna connected to said secure microprocessor. The secure microprocessor and said bus isolation microprocessor are powered by energy received through said first NFC antenna and said second NFC antenna. The cryptographic security token receives data from outside said cryptographic security token only through said first NFC antenna. The token or module may further have a bi-state or bi-stable display and a secure memory, each connected to the secure microprocessor by a secure bus.