Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"secure key"”.
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Implementation of Secure Key Management Techniques in Wireless Sensor Networks
Creating a secure wireless sensor network involves authenticating and encrypting messages that are sent throughout the network. The communicating nodes must agree on secret keys in order to be able to encrypt packets. Sensor networks do not have many resources and so, achieving such key agreements …
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QKD and high-speed classical data hybrid metropolitan network
Quantum Key Distribution (QKD) is currently receiving much attention as it provides a secure source of encryption keys. Discrete-Variable QKD (DV-QKD) is possible for single photon transmission in QKD to-coexist with and encode classical wavelength division multiplexed (WDM) data with appropriate …
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High-dimensional entanglement-based quantum key distribution
Conventional quantum key distribution (QKD) uses a discrete two-dimensional Hilbert space for key encoding, such as the polarization state of a single photon. In contrast, high-dimensional QKD allows encoding onto a larger state space, such as multiple levels of a continuous variable of a single …
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DEPLOYED QUANTUM KEY DISTRIBUTION WITH A ROOM-TEMPERATURE TELECOM SINGLE PHOTON SOURCE
Quantum key distribution (QKD) allows distant users to communicate with perfect secrecy based on the principles of quantum physics. Practical QKD in deployed fibers serves as an important part of the future quantum networks. Although Weak Coherent Pulses have achieved impressive key rates as QKD …
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Tomographic quantum cryptography with bell diagonal states
… a generalized version of the Tomographic Quantum Key Distribution protocol in which the two users Alice and Bob share a Bell diagonal mixed state of two qubits will be presented and its security analyzed. In particular, it will be shown that if an eavesdropper performs a coherent measurement on a …
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Practical Continuous Variable Quantum Key Distribution System with ‘Local’ Local Oscillator
Quantum key distribution (QKD) has been proven to promise unconditionally secure data communication between remote legitimate users，based on the fundamental laws of quantum mechanics. QKD has great potential to be commercialized in the market and implemented in securing critical institutions, such …
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Photonic quantum computers and communication systems
… unsolvable problems in computing, sensing, and secure communication. There has been growing interest in photonic implementations of quantum processors as they offer relatively long coherence lengths, precise state manipulation, and efficient measurement. In this thesis, we first present …
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FPGA Implementation and Optimization of Bit Flipping Key Generation Algorithm for Post Quantum Cryptography in Embedded Systems Applications
… cryptography (PQC) solutions like Bit Flipping Key Encapsulation (BIKE) algorithm, which utilizes Quasi-Cyclic Moderate Density Parity-Check (QC-MCPC) codes for a secure key exchange. Even though BIKE has cryptographic strengths like structural simplicity, and compact key sizes, it suffers from …
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Quantum key distribution beyond the repeaterless secret key capacity
… a theoretical limit known as repeaterless secret key capacity. Overcoming this limit with today’s technology was believed to be impossible until the recent proposal of Twin-field (TF) quantum key distribution (QKD), a scheme that uses phase-coherent optical signals and an auxiliary measuring …
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A Key Management Architecture for Securing Off-Chip Data Transfers on an FPGA
… thesis presents an architecture that acts as a secure wrapper around an embedded application on a Field Programmable Gate Array (FPGA). The architecture includes functional units that serve to authenticate a user over a secure serial interface, create a key with multiple layers of security, and …
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Secured and Versatile IoT Connectivity: A Novel LoRa-Based Approach with Enhanced Encryption, Key Exchange, Real-Time Data Visualization, and Dynamic Storage Integration
… territory considering the growing need for secure and effective long-range communication resulting from the rise of Internet-of-Things (IoT) applications. By incorporating the recently approved National Institute of Standards and Technology (NIST) ASCON cryptographic standard and the …
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A novel authentication protocol based on biometric and identity-based cryptography
… efficiency and functionality. Developing a secure authentication protocol can be challenging; this thesis proposes an authentication scheme that employs two authentication factors involving something you know (password) and something you are (biometric) based on Identity-Based Cryptography …
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Integrated optical components for quantum key distribution
The security of current public key cryptosystems, such as RSA, depends on the difficulty of computing certain functions known as trapdoor functions. However, as computational resources become more abundant with the fast development of super- and quantum computers, relying on such methods for …
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Bidirectional adaptive optics architectures for optical communication through atmospheric turbulence
… growing demand for bandwidth, while FSO quantum key distribution (QKD) links allow information-theoretic rather than computational secure communication between two parties. Unlike fiber-optic classical communication and QKD links, FSO links can do so with minimal up-front investments in …
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The Security of Self-Differencing Avalanche Photodiodes for Quantum Key Distribution
Quantum key distribution (QKD) allows two users to communicate with information theoretic security by encoding information on single photons. This security is based on the laws of physics and as such can never be broken in theory. However, in practice, components do not always behave according to …
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A multi-protocol quantum key distribution transmitter
Quantum key distribution (QKD) is a technology that allows two users to communicate with theoretically perfect security using standard optical fibres. This is possible by transmitting the key on single photons, meaning a measurement by an eavesdropper disturbs the system in a way observable to the …
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Design of New-generation Quantum Key Distribution Systems for Secure Communication
… processing tasks. Among them, the quantum key distribu- tion (QKD) technique guarantees the information-theoretic security of the task of remote secure key distribution. Unlike its classical counterpart, the security of QKD does not rely on the lack of computational power of the current …
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Optically Switched Quantum Key Distribution Network
… vital to modern communication networks. Quantum Key Distribution (QKD) is a promising method based on the quantum properties of light to generate and distribute unconditionally secure keys for use in classical data encryption. Significant progress has been achieved in the performance of QKD …
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A Framework for Secure Group Key Management
<p>The need for secure group communication is increasingly evident in a wide variety of governmental, commercial, and Internet communities. Secure group key management is concerned with the methods of issuing and distributing group keys, and the management of those keys over a period of time. To …
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Integrating physical unclonable functions from novel nanomaterials, circuit elements, and memory technologies into future hardware architectures
Cryptographic keys are fundamental components for ensuring security in digital systems. To ensure reliable key generation and management, various technical concepts have been developed, primarily based on dedicated hardware components such as Trusted Platform Modules (TPMs). However, many modern …