Fujitsu Develops High-Speed Authentication Technology for Encrypted Communications with IoT Devices

Fujitsu in collaboration with the University of Tokyo and Toho University has developed an authentication technology for Internet-of-Things (IoT) devices that reduces the time needed for authentication in the Transport Layer Security (TLS) cryptographic protocol by nearly 80%, compared to previous methods with the same security strength. The TLS protocol, which is widely used in PCs and other devices, employs public key cryptography. With this technology, IoT devices, which have lower processing capacity than PCs, can use communications technology with the same level of safety as that used by PCs. This enables the IoT to be used even in applications requiring security and privacy.

FujitsuTLS requires a certain amount of processing capacity, so it had been difficult to apply to IoT devices, which, with their simplified structure, had taken a second or more for authentication. Now, by reducing the processing load of the core authenticated key exchange method, and by accelerating the arithmetic operation speed, the research team succeeded in developing authentication technology that could accommodate TLS. Envisioning actual applications, the team performed field trials of the newly developed technology by connecting it to an energy management system for air conditioning equipment in the Green University of Tokyo Project.

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