Rockwell Collins, Inc.

Timothy Ivan MacDonald

Jason D Marmur

Richard J Biro

Jason A Silcox

The present invention is directed to a multifunctional cellular modem for an aircraft computing device (ACD). The ACD is connectible to a wireless handheld cellular communication device. The ACD may utilize the wireless handheld cellular communication device as a cellular modem to download a file. Alternatively, the wireless handheld cellular communication device may include a storage media and may download the file and store the file in the storage media. Then the ACD may download the file from the storage media of the wireless handheld cellular communication device. The ACD may be installed in the aircraft and may be operable to install the downloaded file in the aircraft. By utilizing the present invention, an ACD is operable to provide a file for an aircraft without requiring costly dedicated PCMCIA (Personal Computer Memory Card International Association) cellular cards and service contracts for every ACD.

Multifunctional cellular modem for aircraft computing devices

A cryptographic system, method, and device for implementing cryptographic functions designed to protect data is provided. The method includes (a) providing an algorithm processing unit, (b) executing a cryptographic algorithm at the algorithm processing unit using a first cryptographic datum and input data to form output data, (c) determining if a context switch command is received from a controller, (d) receiving a second cryptographic datum from a memory if the context switch command is received, (e) replacing the second cryptographic datum with the first cryptographic datum if the context switch command is received, and (f) repeating (b)-(e). The controller switches the processing state of the algorithm processing unit from one channel to another channel without leaking data between channels through execution of the operations each time a channel switch is selected. As a result, a single algorithm processing unit used with a controller can provide multiple independent levels of security.

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Toddville, IA, United States of America

Timothy Ivan MacDonald