Enhanced arbitrated quantum signature scheme using Bell states

2014 ◽  
Vol 23 (6) ◽  
pp. 060309 ◽  
Author(s):  
Chao Wang ◽  
Jian-Wei Liu ◽  
Tao Shang
Keyword(s):  
Quantum Signature ◽  
Bell States ◽  
Signature Scheme ◽  
Arbitrated Quantum Signature

Arbitrated quantum signature scheme with quantum walk-based teleportation

2019 ◽  
Vol 18 (5) ◽  
Author(s):  
Yanyan Feng ◽  
Ronghua Shi ◽  
Jinjing Shi ◽  
Jian Zhou ◽  
Ying Guo
Keyword(s):  
Quantum Walk ◽  
Quantum Signature ◽  
Signature Scheme ◽  
Arbitrated Quantum Signature

AN ARBITRATED QUANTUM SIGNATURE SCHEME BASED ON HYPERCHAOTIC QUANTUM CRYPTOSYSTEM

2013 ◽  
Vol 11 (04) ◽  
pp. 1350036 ◽  
Author(s):  
YING GUO ◽  
XIN SUN ◽  
WEI ZHANG
Keyword(s):  
Quantum Computation ◽  
Crucial Role ◽  
Quantum Signature ◽  
Encryption Algorithm ◽  
Small Scale ◽  
Chaotic Encryption ◽  
Signature Scheme ◽  
Arbitrated Quantum Signature ◽  
Quantum Cryptosystem ◽  
Three Phases

A chaos-based arbitrated quantum signature (AQS) scheme is designed on the basis of an improved quantum chaotic encryption algorithm whose security is ensured due to the implementation of the quantum one-time pad that embraces the key-dependent chaotic operation string. It involves in a small-scale quantum computation network with three participants in three phases, i.e. initializing phase, signing phase and verifying phase. The signatory signs the encrypted message and then the receiver verifies the signature is valid with the aid of an arbitrator who plays a crucial role when a dispute arises. Analysis shows that the signature can neither be forged nor disavowed by the malicious attackers.

scholarly journals Enhanced quantum signature scheme using quantum amplitude amplification operators

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258091
Author(s):  
Basma Elias ◽  
Ahmed Younes
Keyword(s):  
Quantum Computing ◽  
Quantum Signature ◽  
Quantum States ◽  
Bell States ◽  
Signature Scheme ◽  
Signature Schemes ◽  
Diffusion Operator ◽  
Quantum Amplitude ◽  
Preparation Phase ◽  
Amplitude Amplification

Quantum signature is the use of the principles of quantum computing to establish a trusted communication between two parties. In this paper, a quantum signature scheme using amplitude amplification techniques will be proposed. To secure the signature, the proposed scheme uses a partial diffusion operator and a diffusion operator to hide/unhide certain quantum states during communication. The proposed scheme consists of three phases, preparation phase, signature phase and verification phase. To confuse the eavesdropper, the quantum states representing the signature might be hidden, not hidden or encoded in Bell states. It will be shown that the proposed scheme is more secure against eavesdropping when compared with relevant quantum signature schemes.

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