Texas Instruments is offering its customers added protection against unauthorised reading of intellectual property (IP) and sensitive data in its OMAP-L138 DSP + ARM processors and TMS320C6748 digital signal processors (DSPs). The two areas of protection include:
Secure boot capability which prevents external entities from modifying customer developed algorithms to stop unauthorised users from misusing the customer’s system and its operation by preventing insertion of malware, reverse engineering and system cloning.
Multilayer encryption, which offers the ability to upgrade boot and application software code remotely on Flash memory, while allowing the boot sequence to remain secure. Multilayer encryption is enabled when a device-specific cipher key, known only to the device, is used to protect customer encryption keys. When an update is needed, the customer creates a new encrypted image using its encryption keys. Then the device can acquire the image through available connectivity options and overwrite the existing code.
Examples of applications that would benefit from the secure boot and secure field upgrade feature include medical patient monitors that utilise proprietary, certified algorithms and software-defined radios (SDR) to ensure communication is not compromised if the radios fall into the wrong hands.
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