Results 11 to 20 of about 28,145 (212)

An Information-Theoretic Perspective on the Quantum Bit Commitment Impossibility Theorem [PDF]

Entropy, 2018
This paper proposes a different approach to pinpoint the causes for which an unconditionally secure quantum bit commitment protocol cannot be realized, beyond the technical details on which the proof of Mayers’ no-go theorem is constructed.
Marius Nagy, Naya Nagy
doaj   +4 more sources

Impossibility of Quantum Bit Commitment, a Categorical Perspective

Axioms, 2020
Bit commitment is a cryptographic task in which Alice commits a bit to Bob such that she cannot change the value of the bit after her commitment and Bob cannot learn the value of the bit before Alice opens her commitment. According to the Mayers−Lo&
Xin Sun, Feifei He, Quanlong Wang
doaj   +3 more sources

Commitment Schemes from OWFs with Applications to Quantum Oblivious Transfer [PDF]

Entropy
Commitment schemes (CSs) are essential to many cryptographic protocols and schemes with applications that include privacy-preserving computation on data, privacy-preserving authentication, and, in particular, oblivious transfer protocols.
Thomas Lorünser, Sebastian Ramacher, Federico Valbusa   +2 more
doaj   +2 more sources

Recursive Cheating Strategies for the Relativistic FQ Bit Commitment Protocol

Cryptography, 2017
In this paper, we study relativistic bit commitment, which uses timing and location constraints to achieve information theoretic security. Using those constraints, we consider a relativistic bit commitment scheme introduced by Lunghi et al. This protocol
Rémi Bricout, André Chailloux
doaj   +3 more sources

PhysioKey: Edge-AI-Driven Physiological Key Agreement for Secure Body Area Networks [PDF]

Sensors
Body area networks (BANs) require secure intra-body communication, yet sensor nodes are too resource-constrained for conventional public-key cryptography, and pre-shared key schemes conflict with plug-and-play clinical workflows.
Mohammed Alnemari, Osamah M. Al-Omair
doaj   +2 more sources

Quantum one-time tables for unconditionally secure qubit-commitment [PDF]

Quantum, 2021
The commodity-based cryptography is an alternative approach to realize conventionally impossible cryptographic primitives such as unconditionally secure bit-commitment by consuming pre-established correlation between distrustful participants.
Seok Hyung Lie, Hyukjoon Kwon, M. S. Kim, Hyunseok Jeong   +3 more
doaj   +1 more source

Unconditionally Secure Relativistic Quantum Qubit Commitment

Applied Sciences, 2021
Quantum qubit commitment is a stronger version of the quantum bit commitment. It is impossible to realize unconditionally secure quantum qubit commitment in nonrelativistic domain.
Houquan Liu, Libo Yuan
doaj   +1 more source

Insecurity of a relativistic quantum commitment scheme

Results in Physics, 2023
We propose a cheating strategy to a relativistic quantum commitment scheme (Nadeem, 2014) which was claimed to be unconditionally secure. It is shown that the sender Alice can cheat successfully with probability 100%, thus disproving the security claim.
Guang Ping He
doaj   +1 more source

A Private Quantum Bit String Commitment

Entropy, 2020
We propose an entanglement-based quantum bit string commitment protocol whose composability is proven in the random oracle model. This protocol has the additional property of preserving the privacy of the committed message.
Mariana Gama, Paulo Mateus, André Souto
doaj   +1 more source

An Optical Implementation of Quantum Bit Commitment Using Infinite-Dimensional Systems

Applied Sciences, 2023
Unconditionally secure quantum bit commitment (QBC) was widely believed to be impossible for more than two decades, but recently, based on an anomalous behavior found in quantum steering, we proposed a QBC protocol which can be unconditionally secure in ...
Guang Ping He
doaj   +1 more source