Abstract:
With the emergence of Quantum computing, more and more emphasis is on devel oping cyber-physical quantum-safe systems. Information-Theoretic security does not
depend upon assumptions of computational hardness. Thus is quantum-safe if a
framework is proved to be Information-Theoretic Secure. As the connectivity of net worked devices becomes more and more ubiquitous, revolutionary Internet of Things
(IoT) technologies find their place in many facets of our society. The key explanation
for cyberattacks on IoT networks is the misuse of these devices. Security architecture
is still an open issue and a key phase in making effective IoT applications. Real time commands must reach the end devices in milliseconds in dicey settings, such as
e-health, smart grid, and smart cities. Traditional public-key cryptosystems, while
essential in the sense of general Internet security, fail to create new session keys for
critical messages on a millisecond scale. In this thesis, we proposed three frame works that satisfy the cryptographic properties of cyber-physical systems. Firstly, a
Blockchain User Authentication using zk-SNARKS is proposed to authenticate nodes
wanted to join a network using a decentralized mechanism. Secondly, an information theoretic key generation mechanism is proposed based on packet erasures and error
correction codes. Thirdly, an information-theoretic secure message routing algorithms
in software-defined networks (SDN) is proposed. The information-theoretic security of
the latter two schemes is proved under the adversarial model. Efficiency of keystream
generation is demonstrated by experimental results and Shamir’s secret sharing (SSS)-
based protocols and the validity of our mechanism design.
