A novel secure conference communication in IoT devices based on memristors

Low cost, power efficiency, and small size are the star features desired for Internet of Things (IoT) platform. This paper presents a novel hardware-based secure conference communication system rather than application-level algorithms existing in the literature. The proposed system depends on the fingerprint I-V characteristics of HfO2 memristor devices. The suggested novel nano-thick layer stack provides the memristors with highly probabilistic number and strength of filaments created in the devices. The experimental results reveal different I-V curves obtained for identical devices. In addition, within the same device, the set and reset operations result in new I-V characteristics, which can be used for session key generation. The distinctive features of the fabricated devices allow symmetric-key cryptography-based communication. Security analysis proves that mutual authentication, confidentiality, integrity, and authorization are obtained. In addition, the system is resilient to eavesdropping, replay, and Man-in-the-Middle attacks.

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