Key Exchange Trust Evaluation in Peer-to-Peer Sensor Networks With Unconditionally Secure Key Exchange

Abstract

As the utilization of sensor networks continue to increase, the importance of security becomes more profound. Many industries depend on sensor networks for critical tasks, and a malicious entity can potentially cause catastrophic damage. We propose a new key exchange trust evaluation for peer-to-peer sensor networks, where part of the network has unconditionally secure key exchange. For a given sensor, the higher the portion of channels with unconditionally secure key exchange the higher the trust value. We give a brief introduction to unconditionally secured key exchange concepts and mention current trust measures in sensor networks. We demonstrate the new key exchange trust measure on a hypothetical sensor network using both wired and wireless communication channels. Unconditionally secure key exchangeIn software-based key distribution (exchange) protocols the security is only computationally-conditional, meaning that the eavesdropper has all the communicated information, and with enough computing resources or time the key can be fully extracted. The advantage of software-based key distributions is that they are relatively cheap, easy to install and run, and the key can be exchanged wirelessly.Unconditionally secure key exchanges are key distribution methods that are information theoretically secure [26], which means that the information is not in

Alternating (AC) Loop Current Attacks Against the KLJN Secure Key Exchange Scheme

“…To improve the security of the original scheme, different enhanced versions of the KLJN were introduced [4, [44][45][46][47][48][49]. A variety of potential applications have been proposed for the KLJN system [59][60][61][62][63][64][65][66][67][68][69][70][71][72].…”

Man in the Middle and Current Injection Attacks Against the KLJN Key Exchanger Compromised by DC Sources

“…Practical applications have potential to introduce unconditional security, among others, for networks and smart grids [59][60][61][62][63][64][65][66]; computers, instruments, credit cards, key cards, PUF [67][68][69]; autonomic vehicle systems [70][71]; and accelerated IT-secure key exchange [72].…”

“…This is the only system § Corresponding author. in this security class that can be integrated on a chip with today's available technology, and it can have a wide range of related applications [59][60][61][62][63][64][65][66][67][68][69][70][71][72].…”

Current Injection Attack against the KLJN Secure Key Exchange

“…are available [1]. Unconditional security is essential in intelligent vehicle systems [2,3]; for power and sensor networks of strategical importance [4,5]; for ultra-strong PUF hardware keys [6]; and in secure computer, instrument and video game systems [7].…”